Violation of the integrity of the roof structure of a building is a serious problem that requires action to be taken without delay. If damage to the roof is discovered, then first of all you need to record them by drawing up a special document, on the basis of which an estimate for repair work will be drawn up in the future. It is about this that will be discussed further. The rules for its preparation and a sample estimate for repairs will be presented below.

As mentioned above, the estimate for repairs is drawn up on the basis of the defective statement. The reason for its filling is the failure of the roof for any reason: from the end of its service life (the natural deterioration of roofing materials), and ending with the results of errors made during the installation work.

If the conversation is about a private cottage or country house, but repairs are planned with the involvement of third parties, then in order to become familiar with the volume of upcoming work and expenses, you should call a specialist. He will estimate the cost of repair work with high accuracy. This approach makes it possible to optimize the costs of construction work, which is necessary to carry out emergency, routine or major repairs.

Residents of an apartment building need to follow the same principle. But at the same time, the specialist involved in the assessment must be an employee of the management company that is responsible for the maintenance of the house. Thus, in order to call a specialist, you need to submit a collective application.

The technician will record all existing defects and enter them into a special form, which, among other things, indicates the measures necessary to solve the existing problem. Often photographs are attached to the form describing the existing defects.

“It is worth understanding that the estimate for repair work is formed on the basis of the information present in the defect sheet. In this regard, its compilation must be taken as responsibly as possible.”

Repair price

Costs for major roof repairs directly depend on a number of parameters:

• the total roof area, and as a result, the volume of work. The larger the roof area that needs to be repaired, the higher the cost of repair;
• the type and price of materials necessary for arranging the roofing pie;
• level of damage to coatings and elements located under the roof (thermal insulation, waterproofing, etc.);
• scope of work. For example, eliminating local damage will cost much less than major repairs;
• prices for delivery of materials;
• remuneration of workers, which is calculated taking into account the labor intensity of the process and the specifics of installation of roofing materials;
• payment for the use of specialized tools and equipment, if there is a need for their use.

“The preparation of estimates should be carried out by an experienced specialist. This is due to the fact that it is necessary to take into account a lot of different nuances: from the specifics of using special tools to the consumption of roofing materials. You can have various examples of compiled estimates on hand, but you still won’t be able to take into account all the subtleties. In this regard, such work should be entrusted to estimators. This professional approach allows you to avoid additional unexpected expenses.”

Budgeting

As a rule, to draw up an estimate, a defect sheet is used, which contains a list of the types and volumes of activities requiring implementation. In addition, it contains information about the amount of materials needed. An estimate is required in order to convert the data available in the defect inspection into a monetary equivalent. Thanks to this, it is possible to calculate the full cost of repair and restoration work. Estimate documentation is drawn up with the obligatory indication of the following values:

• serial number of the document. For the most part, this component of the estimate has reporting implications;
• numerical and letter designations of resources (codes), and standards numbers;
• names of works and exact costs for their implementation;
• units of measurement. For materials, this can be kilograms, grams, tons or pieces. For workers, working hours. For equipment, engine hours. For other resources, kilowatts, liters, etc.;
• number of units;
• prices of units of measurement in national currency;
• correction factors. It is worth understanding that no estimate can be drawn up without errors;
• conversion factors;
• winter price increase coefficients;
• total costs in national currency.

A well-prepared estimate for roof repairs must include a calculation of the cost of preparatory activities. This is because repairs cannot begin immediately after the problem is discovered. First you need to dismantle the failed roof elements. The preparatory work should include activities that need to be carried out on a roof of one type or another. For example, dismantling a multilayer roll covering involves carrying out a number of the following works:

• development of roofing layers;
• dismantling the roof screed. Be sure to indicate whether it is reinforced. In this case, additional dismantling measures will be required using specialized equipment;
• dismantling the vapor barrier, waterproofing and thermal insulation layers;
• dismantling parapets;
• disassembling the system responsible for draining water. We are talking about wall gutters, drainage funnels and other structures of a similar type;
• dismantling areas where rolled roofing material adjoins vertical structures, for example, stove heating or ventilation pipes.

After this, the items of restoration measures must be indicated in the estimate sheet. They can be very different. An example of work for a soft roof looks like this:

• arrangement of parapets;
• roof treatment with primer;
• installation of thermal insulation, waterproofing and vapor barrier layers;
• pouring screed;
• installation of roof sections adjacent to the vertical roof elements;
• arrangement of a drainage system;
• repair or complete restoration of ventilation, chimneys and other structural elements of the roof;
• installation of finishing roofing material.

“The procedure for specifying work in the estimate directly depends on the type of roofing and the specifics of the materials used. Roof repair may imply restoration of waterproofing, complete replacement of the finishing coating with a new one, etc. In this regard, each estimate is individual.”

After all the required data has been entered into the estimate documentation, costs are calculated for each item (material, types of work, etc.). After this, the total amount of money spent is calculated. The estimate for roof repairs is an official document. In this regard, it must be certified by the compiler and the person who verified it.

After verification, the estimate documentation is sent for approval and approval by the responsible person. If we are talking about repairing the roof of an apartment building, then the responsible person is the head of the management company. When it comes to private property, the owner is the responsible person.

Additionally, it should be said that the estimate is the most detailed document. Everything in it should be described as accurately as possible. In this document, roof repairs cannot be indicated in the “name of work” column. This paragraph should indicate absolutely everything: from loading and unloading operations to each type of installation and dismantling. This also applies to other points.

After agreement with the responsible person, the estimate documentation is reproduced and attached to the roof repair contract. A sample estimate must be provided to the contractor for repair and restoration work. It is the estimate documentation that is most often the determining factor in concluding a contract for construction and installation work.

The budget for any construction project is based on three components: the project, construction standards and delivery dates. In turn, the construction project includes an estimate that outlines the construction work and the necessary materials, as well as prices. It's important to know how to create an estimate, and here's why. It is in the estimate that you can find information of interest about the cost of a certain type of work and construction in general, which makes it the main financial document. The attitude towards such documents is very scrupulous and even picky.

How to make a construction estimate?

Construction is the most complex of all types of estimates. Includes many expense items, items and components. Therefore, it was chosen as an example for consideration. A typical construction estimate includes:

1. Determination of expenses. It is necessary to indicate the directions of construction in order to outline the purpose of upcoming expenses in accordance with the construction project.
2. Determining the amount of expenses for expenses. Having outlined the expense items in the first paragraph, you should calculate the amount of funds that need to be allocated to carry out the planned activities. In other words, calculate how much it will cost to implement the tasks of the first point.
3. Salary. The most complex and voluminous stage of drawing up an estimate, which, as practice shows, is always adjusted upward during the construction process. Mainly two types of payment are used:
   • piecework – payment is made in stages for specific work performed;
   • hourly – payment is made according to the time worked.
4. The cost of materials largely determines how to properly budget. It is necessary not only to select the necessary materials, but also to determine their quantity. It is almost never possible to accurately determine the required volume of building materials. This is due to violations of usage standards during construction, and to the quality of purchased materials, and to the eternal requirement to do as in the project, but that it should be like this.”
5. Adjustment of estimates. This includes the correction of deficiencies identified before the start of construction. If overhead costs are not taken into account anywhere, then they can also find a place.

How to estimate construction costs

Each contractor has a different approach to cost estimating. The main thing is that it is approved by the customer. The following expense items can be included in the house construction document:

1. Search for a building plot. This also includes related expenses: gasoline, daily allowance, working hours, etc.
2. Cost of purchasing the plot. Plus costs incurred for documentation (if determined by the parties).
3. Cost of electrification of the site.
4. Cost of gasification of the site.
5. Water supply. This may be a connection to an existing water supply system or provision of an autonomous water supply.
6. Construction of a sewerage system.
7. House project: costs for the services of design and architectural organizations, designer.
8. Construction of a house: demolition of an old building (if any), excavation and construction work.
9. Finishing: both internal and external.
10. Communications inside the building (wiring, water, sewerage, heating, plumbing).

How to make an estimate for apartment renovation?

For those who have read the previous chapters with sufficient care, drawing up an estimate will not be difficult. Basic requirement: Internet access, calculator and desire. There is Internet (otherwise you wouldn’t read the article), at least there is a calculator on your mobile phone, but the desire is up to you. Carefully make a list of tasks that you will assign to builders. For each type of work, you will find a list and consumption standards for building materials on the Internet. For example, per m2 of plasterboard ceiling you need:

• plasterboard – 1m2,
• profile CD – 2.9 linear meters,
• UD profile – around the perimeter of the room,
• profile extension – 0.2 pcs.,
• profile connector (crab) 1.7 pcs.,
• suspension with clamp – 0.7 pcs.,
• suspension rod -0.7 pcs. and so on.

Find out the prices for materials in the store where you plan to buy all this. By multiplying the consumption rate by the volume of work and the price, you can find out the cost for each building material. The sum of the results will give an overall picture of the cost of building materials.

Construction teams have different approaches to pricing for work performed. But in general, the cost of work can be equated to the cost of materials. Although for each region it is necessary to make an adjustment: the cost of work in Moscow and Bryansk will differ significantly. The sum of the cost of work and materials will determine direct costs. Now let’s add 10-15% for overhead and unforeseen costs and get the amount of the upcoming repairs.

Having done a couple of similar examples, you will learn how to make estimates and will be able to help your friends and acquaintances.

The most important stage in the design of any building or system is the preparation of estimate documentation. The estimate allows the customer and the contractor to establish the contract price for the contract, optimally plan and analyze the entire complex of construction work, distribute cash investments, and also carry out interim financial calculations.

First, decide on the method for calculating the cost estimate. In modern construction, the base-index method is more often used. The estimated cost of work includes three components: direct and overhead costs, planned savings. Direct costs are the sum of expenses for the purchase of materials, operation of equipment, and wages to workers. They are calculated by any of the selected methods.

Overhead costs are the costs of organizing, managing and maintaining a construction project. When calculating them, take into account the coefficients used.

Planned savings are estimated profits that cover the company’s costs for its successful operation. This includes costs for improving the production base of the enterprise, developing infrastructure, paying taxes, and ensuring decent working conditions for employees. Estimated profit is also calculated taking into account existing ratios. To calculate the estimated cost, you must decide on the type of estimate standard. When directly drawing up and calculating the estimate, take into account all types of work used, the amount of materials, time, workers and equipment involved. You may find ready-made programs useful for calculating the mass of steel, paint area, and volumetric weight of building materials. Select the material (surface to be processed), enter the initial data and get the result. To simplify the work of drawing up estimate documentation, there are programs - DefSmeta Free, My Estimate, Lightik Estimate, Microsmeta, etc. The free Microsmeta program does not need to be downloaded. She works online. Register on the site. In the left corner, click “Create an estimate” and fill out the required fields. Indicate the type, section, name of work and area (quantity). In this program it is possible to select building materials. The program warns at the bottom of the table that there is no average cost of material for each type of work. You can print the list of required materials and the finished estimate by clicking on the “Print material for estimate” and “Print estimate” buttons, respectively. Download the free program DefSmeta Free to work offline on your computer. In the start window, check the box “Show help for working with an assistant” and click the “Create a new estimate using an assistant” button. For a small volume of construction work, select the “Determination of cost by type of work” section. If you have planned large-scale construction, then click on the section “Determining the cost of work on premises”. Specify coverages (types of work). Establish the scope of work to be performed. Then select the type of work from the list provided. In the next window you will be able to adjust the scope of work by selecting related ones. Similarly, fill in all the data on the selected coatings (walls, floors, ceilings, etc.).

A construction estimate is required, which will take into account all costs for the work of builders and materials.

How to make an estimate for repairs yourself?

To begin with, it is necessary to estimate and record the volume of construction work - the area of ​​the floor and ceiling (they differ), the area of ​​wall covering, the length of products calculated in linear meters (cornices, skirting boards), as well as piecework - replacing windows and doors.

Where can I get the sizes?

Measure yourself! Seven times each name. A tape measure and a calculator (to immediately calculate areas) are best friends.

Where can I get quotes?

Google it - there are plenty of price lists on websites. Take some average cost for your estimate. The cost of all work is estimated per unit of measurement - m 2, pgm, piece work, waste removal in m 3.

How to calculate the amount of building materials?

Calculating the estimate for those who do the repairs themselves comes down to the usual calculation of the required amount of materials.

There are two dangers. Buy a little, and then you won’t find what you need. Buy with a large margin and greatly overpay.

To avoid such scenarios, we apply a simple rule:

• We calculate the consumption of a unit of each material per unit of length or area (a roll of wallpaper or a can of paint per 1 m2), or the size of a unit of the material itself (the area of ​​one sheet of drywall, porcelain stoneware, etc.)
• We multiply the consumption by our measurement data - total area, length or quantity.
• add ~ 10-30%, depending on the material.

What kind of work should be included in the estimate for apartment renovation?

• Preparatory stage
• Rough work
• Related works
• Finishing
• Purchase of materials
• Garbage removal

For each stage you will receive a separate mini-estimate.

Do you need a budgeting program?

No special programs are needed. MS Excel and basic knowledge are enough. 1st column - type of work, 2nd - units of measurement, 3rd - cost and 4th - total (multiply 2 and 3 columns).
You can place each stage of repair on different tabs of the document.

This is just the simplest option. With certain skills, you have room to expand - the possibilities of Excel are inexhaustible!

Estimate for the preparatory stage of repairs

The estimate always includes dismantling work. They include:

• dismantling of floor coverings - linoleum, carpet, tiles,
• cleaning the ceiling from whitewash and paint,
• cleaning wallpaper and dismantling plaster (all in square meters),
• removal of skirting boards (in linear meters),
• piece by piece dismantling of door blocks,
• all electrical points (chandeliers, sconces),
• all plumbing points - toilets, sinks, heated towel rails, bathtubs and faucets.

Dismantling of walls is recorded in a separate column. Load-bearing walls cannot be demolished, but in special cases openings can be moved into them. Most often, moving an opening in a load-bearing wall costs 3-4 times more than dismantling an entire partition. Please note that such a process must be approved by the housing inspectorate and requires special equipment.

You can save at this stage if you are able to do some of the listed actions yourself.

Estimate for rough work

At the stage of rough work in repairs, a lot of hidden work occurs, for example, preparing surfaces for finishing.

What work will be included in the estimate:

• For ceilings - cleaning from plaque, sealing seams, leveling (plaster), putty and primer.
• For walls - leveling with plaster, putty and primer.
• For the floor - a screed device, in wet rooms a waterproofing device, when installing a heated floor, cable routing, installation of sensors and connection to the electrical network

An additional type of work is connecting electrical and plumbing.

The estimate should also take into account:

• stripping walls for electrical outlets,
• laying cables in corrugation,
• laying water pipes,
• laying sewer pipes.

Estimate for related work

Usually organized by specialized companies.

What work needs to be taken into account when drawing up an estimate?

• installation of telephone, Internet and TV cables, intercom,
• installation of air conditioners,
• kitchen assembly,
• Window replacement includes installation of slopes and window sills.

The Internet is now most often installed for free, the main thing is that there is a provider in the house. And the rest - you should contact the organization in advance for calculations - calling surveyors is now also mostly free!

Drawing up an estimate for finishing work

After assessing the preparatory work, they move on to calculating the costs of finishing the premises.

What work can be included in the estimate?

• ceiling - painting (before finishing the walls);
• installation of suspended and slatted ceilings;
• walls - painting, plastering, wallpapering, tiling;
• flooring - laying ceramic tiles, parquet, laminate, linoleum, carpet, parquet;
• moldings - cornices, moldings, plinths
• installation of plumbing;
• installation of electrical outlets (sockets, switches);
• installation of heating radiators;
• door installation;
• installation and installation of chandeliers and lamps.

Assembly of furniture and built-in wardrobes can also be included in the estimate. But you can skip it for now, since many furniture manufacturers offer free assembly or include its cost in the total bill when ordering furniture.

Purchase of materials

If you hire a foreman, the purchase of materials is also included in the estimate. Most often, purchase and delivery to the site costs approximately 20% of the price of materials.

But if you buy everything yourself, then it can only be renting a car. There are options with free delivery if you order materials through online stores for a certain order volume.

Garbage removal on budget

Removal of construction waste is included in the estimate after each subsection. It is desirable after dismantling, roughing and finishing work.

Please note that ordering a car, collecting garbage in bags, and cleaning the premises can also be included in the estimate as hidden work. Even the best builders won't do it for free.

For waste removal, containers with a volume of up to 8 m3 and a carrying capacity of up to 5 tons are most often rented.

And again - if you collect everything yourself and can take it out - then all that remains is to order a container. And if there is somewhere to store garbage, then you can get by with its one-time removal.

• Immediately draw up an apartment plan with dimensions. It will help you when counting consumable materials.
• Calculate separately each volume of work - the area of ​​walls, floors and ceilings, the length of moldings for all the premises being repaired.
• Determine whether utilities (pipes, electrical) need to be changed.
• Count the number of sockets, switches, taps and related fittings, as well as such small things as screws and self-tapping screws.
• Determine who will be involved in the purchase of materials, delivery and lifting to the floor, as well as removal of construction waste.
• Distribute the entire volume of work separately among the premises, this makes it easier to control the process.

Be prepared for the fact that it is impossible to accurately calculate the timing and costs of repairs on your own without any experience.
This doesn't mean you shouldn't try.

A huge help for accurately calculating the estimate is the design project of the premises. The likelihood of an error is practically eliminated, unless you want to do something differently than calculated in the project. But the designer is a separate expense item. Whether it is needed is up to you to decide!

Instructions

Drawing up estimates for project This work consists of several stages: all types of work, the necessary materials and their quantity, the cost of construction and finishing materials, calculation of the cost of all types of work, adjustment of the estimate.

Design and estimate documentation includes: local estimates for individual types of work for each task and structure, for general site work; object estimates - summary estimates for each object, which should contain enlarged and generalized indicators; summary, which defines construction taking into account those costs that cannot be taken into account in accordance with estimated standards - additional payments, compensation for the seizure of land for development.

When drawing up an estimate, do not forget to take into account all types of work, including those that will be entrusted to third-party specialists. Calculate the costs and costs of the work in this case at the average cost so that the adjusted estimate does not double.

Before drawing up an estimate, be sure to inspect the site and the location of construction work. In this case, it will be easier for you to take into account all the additional costs, for example, for strengthening the foundation or roof. Consider transportation costs and budget for estimate funds that will be spent on removing construction waste. Reflect in the estimate the factor of seasonal increases in the cost of construction work and materials.

Try to take into account all materials and work when drawing up an estimate; the more accurate your calculation is, the higher the customer will evaluate your professional qualities. Don't forget to budget some for unexpected expenses, usually 10%. This reserve will help guarantee the continuity of construction and the fulfillment by builders of all their obligations.

If the customer costs project If it seems too big, tell him what he can use, what materials can be replaced without compromising the quality, strength and durability of the object.

Each task must be approached thoroughly, especially if you are engaged in it constantly or this process, although not an everyday activity, often plays a decisive role. It depends on a properly planned daily routine whether you will have time to complete the required amount of work, on thoughtful questions for the upcoming conversation with partners - whether you can immediately discuss important details, on a well-developed estimate - whether the available or requested funds will be enough for you to implement a particular project.

Instructions

Before starting work on the estimate, you need to carefully work out the future, because even the details required at a specific stage of its implementation must be reflected in the financial justification for the upcoming activity. As a result, when you receive a finished project, you should have a ready-made list of specialists and other resources needed for its successful implementation.

When drawing up an estimate, all required costs are divided into sections - expense items. Usually these are fees, premises, transportation and expenses, office supplies, consumables and more. All this is put into a table, where, in addition to columns with the name of the product and its cost, there must be quantitative indicators of the required material and the amount of each expense, as well as itemized totals, when added together, the total cost of the entire project is obtained. If your own or other partners contribute to your project, it is advisable to reflect this in the appropriate column.

Particular attention should be paid to the article “Employee salaries”. All specialists who will be involved in the project, the average monthly payment and the number of months of work of each employee, the percentage of working time on the project and the total payment amounts for all employees should be indicated here. Also, be sure to insert a line for tax deductions here.

Work on drawing up an estimate ends with writing its justification. Here you should describe the need for everything requested “What? For what? How important is this for the implementation of the project? You can also attach a list of job responsibilities for the project and resumes of specialists, price lists of stores where you intend to purchase basic equipment.

Cost estimate for production products is a list and cost of all costs, grouped by economic elements, with general economic content. Such an estimate is necessary, first of all, to establish the optimal level of costs included in it, identify savings reserves and determine the cost of products planned for production.

Instructions

The estimates are summed up to form a free general document - a cost estimate, according to which the cost of gross, marketable and sold products is calculated. The composition of economic elements is the same for each estimate for production- this allows you to ensure cost reduction for each element and control its changes in the cost structure.

Start budgeting for production from the estimates of auxiliary shops and divisions, the products of which are consumed by the main shops and in their costs. The economic elements of such an estimate will be the own costs of the auxiliary workshop, the cost and services that it performed or provided to other workshops or divisions.

Compose estimate maintenance and management costs production m, which will take into account general production, general business and non-production expenses. Draw up estimates for certain types of special costs: commissioning for product development, transportation and procurement costs.

After this, you can proceed to drawing up cost estimates for production for workshops considered the main ones, and from them - for the economic entity as a whole. The basis for drawing up such an estimate will be the costs of all economic elements. These include material costs, wage fund costs and tax deductions on it, depreciation of fixed assets, and other costs. Their composition is determined in each specific case in accordance with the developed instructional, methodological and regulatory materials and documents.

In total costs for production consider not only the costs of production commodity products, but also those that are associated with an increase in the balance of own unfinished goods - semi-finished products, services not included in commercial products, deferred expenses.

Helpful advice

The production cost estimate is used to develop the financial plan of the enterprise, it is used to determine the need for working capital when drawing up the balance sheet of the enterprise, and it is taken into account to determine many other indicators of the financial activity of the enterprise.

Sources:

• preparing production cost estimates

Estimate - the totality of all costs for materials and work. The complexity of finishing work does not differ much from other types of work. But such work the most painstaking in monetary calculations. Before you start decorating the premises, draw up estimate finishing works so that unplanned costs do not arise.

Instructions

Take budgeting seriously. Assess your financial capabilities, because... the market has an abundance of different types and quality of materials - these can be expensive high-quality materials, they can be at a lower price, but the quality will remain at the same level, i.e. analysis of the market for goods and their selection will protect you from miscalculation in the estimate.

To compose estimate, you will need one in which you plan to carry out finishing work. Next, examine the condition of the room, determine the necessary materials and work. In order to select materials, taking into account their technical characteristics, you need knowledge of work techniques and the ability to determine the scope of work. It is also necessary to take into account the costs of delivering finishing materials, possible technological equipment used, and tools to the work site. And don't forget to take into account the depreciation percentage of equipment and tools.

An important point is the preparatory stage of finishing work (primer, putty, etc.). These materials must be of good quality, because... will affect the finish in the end. If the object of work is small and uncomplicated, estimate can be compiled independently and presented in the form of a spreadsheet document, which indicates work and materials by category, their volumes, price per unit from price lists, cost of work and materials.

The total amount in the estimate is the sum of all work and materials under the document. And this will be the amount of money that you have to spend on finishing work. Also, the cost of all work depends on who will carry out the finishing work- or it will be a qualified team of finishers or novice finishers who are just starting to develop in this business, the cost of whose services will be significantly lower than that of professionals. But at the same time, we should not forget about the risk of poor quality of work performed, which will entail an increase in the cost of the estimate due to possible alterations.

Also estimate can be compiled using special programs. Download a program convenient for you and enter the initial values ​​into the data window (as a rule, it is possible to download an Excel file with the entered data), click “Calculate”, then “Generate” estimate" Select a document type and create it.

If the finishing work is large and labor-intensive, it is better to order the preparation of estimates from a specialized estimating company. The cost of its preparation ranges within 0.5% of the total estimated cost. If finishing work plan to order a specialized team, then drawing up an estimate will be

Preparing an estimate for a person who is far from the specifics of construction and installation work should begin with defining the task. First of all, you need to understand what needs to be repaired - the premises as a whole, individual rooms, a local area.

Depending on the task, repairs can be classified as major or cosmetic. Major repairs require implementation into the engineering content of the building, so it will be difficult to make an estimate for such a large-scale area of ​​work. The easiest way is to prepare estimates for cosmetic repairs yourself.

Inventory

Independently developing an estimate and studying the specifics of the repair process often leads to the understanding that some work can be safely done independently, some building materials can be avoided, but can be used that are already available, and some of the tools are already available.

Therefore, it is necessary to conduct an audit of existing building materials and equipment, which most often ends up as dead weight on balconies, storage rooms and garages. When listing the available equipment, it is important to simultaneously make a list of the necessary materials and tools to be purchased.

Seeing the available reserves and all work profiles, you should determine which areas of work to entrust to specialists, and which ones you can do on your own. All budget items that require the involvement of contractors should be included in monitoring prices on the market. You should rely on the average and maximum bid for the category. Suspiciously cheap offers from contractors should be immediately excluded from monitoring. Most likely, they do the work poorly or there are loopholes in their price list that will only reduce the objectivity of the estimate.

Cost of building materials

The next stage is monitoring prices for the necessary building materials. You should study the offers of construction hypermarkets, online stores and private suppliers. Discount promotions should be taken into account only if their validity period coincides with the approximate purchase date.

Material consumption is calculated from the volume of work and the usual consumption rate indicated on the material packaging. For any construction and installation work, a reserve of 15% should be provided for each type of building material used. The surplus that remains after repairs will be useful for minor repairs, the need for which may arise during operation.

Force Majeure

Even the most detailed construction estimate ultimately goes beyond the designated financial threshold, either plus or minus. This is due to the instability of prices for building materials, equipment and services. It is important to provide for such force majeure events. To do this, the total amount should simply be multiplied by 1.5.

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