Estimated cost is what?

For each stage of construction work, an investment project is calculated. It details all the necessary materials for the erection of the building, works and their tarification. This detailed calculation has its name - the estimated cost of construction.

Definition

Estimated cost is the amount of funds required for the erection of a building. It includes the costs of financing construction, payment of contract work, the cost of purchasing equipment, its delivery and installation. Based on the estimate documentation, the reporting and evaluation of the activities of construction and installation organizations are formed.

Estimated cost is the basis for calculating the book value of objects put into operation. It is calculated on the basis of:

1. Working documentation, drawings, a list of construction works, the order of construction, an explanatory note to the materials.
2. Current standards, selling prices for equipment and inventory.
3. Decisions of state bodies on the appropriate construction.

Calculation methods

Determination of the estimated cost is carried out by resource, index or basis-index method. In the first case, the correlation of the current prices of resources with the norms of their expenditures is carried out. At the same time, the index method provides a combined calculation. The resources for which market prices are available are accepted at weighted average tariffs. For all other materials, the contractor's estimated cost index is set. If there is none, then the coefficients approved by state bodies are used. Indexes for restating the estimated cost are updated every quarter. The basic method provides an economic justification for the calculated indices for the cost elements.

Structure

Estimated cost of construction is formed from the cost of:

• Erection of the building;
• Acquisition and installation of equipment;
• Other costs.

Let's consider each of the elements in more detail. Construction works include general construction works (stone, earth, plaster) for the erection of buildings and installation of structures. This includes internal and external engineering (water supply, ventilation, sewage, etc.).

The second group includes installation of equipment, connection of technological wiring, power supply. The estimated cost of construction and installation works includes the costs of purchasing and transporting materials, mark-ups of the supply department, calculated at basic prices. The group of other costs includes the costs of design, training, maintenance of the construction team, the organization and conduct of bidding, etc.

Types of estimates

The total cost of works is formed from local estimates, costing of objects, separate works, summary calculations. Local estimates are the primary document that is compiled for general site work based on the volumes prescribed in the drawings. This includes direct, overhead and planned costs.

Calculation of objects is based on the local. It contains indicators such as the amount of wages, the cost of operation of machinery, the cost of structures and equipment, transportation costs, overhead costs. If only one type of work is performed, then there is no need for such a detailed cost estimate.

Object estimates include summary reports on the preparation of the construction site, personnel, basic facilities, auxiliary buildings, service facilities, energy facilities; Constructions of water, heat and gas supply, sewerage; Landscaping of the territory; Technical supervision of the facility; Other works. A separate line displays the amount of unforeseen expenses. Calculation of the estimated cost is carried out based on all the above calculations.

Financial indicators

The change in the estimated cost can be due to both unforeseen expenses and changes in the prices of resources. Therefore, at the design stage, the total demand for investments is calculated: O = Спр + Ссмр + Соб + Спр.

In this formula, Cpp is the calculation of design and survey works, Ssmr - the price for construction and installation works, the Property for equipment installation, Cpp - the amount of other expenses. This determines the cost of erecting the building.

The participation of construction organizations reflects the coefficient of Sq. It is based on the general price formula: Ssmr = Cost of work + Profit = Materials + Salary + Depreciation of equipment + Profit

Types of prices

Estimated cost is the planned cost price. It is calculated on the basis of indices, by categories or by purchasing prices of manufacturers. The prices for products are formed depending on the location of the goods at the time of delivery to the consumer:

• Warehouse supplier;
• Vehicle (FCS);
• Station of departure (SWO);
• Station of destination (VSN);
• On-site warehouse;
• construction site.

Each of the listed types includes the costs of the previous type, as well as an additional cost item. The price of the supplier's warehouse includes the costs of manufacturing and storing materials. The FCS takes into account the costs of loading materials into a truck, BSS - delivery of the car, VSN - delivery of material to the dock. The last two types of prices imply the costs of transportation of raw materials to the on-site warehouse or construction site.

Price calculation

The price is fixed per unit of raw materials. It is calculated by the formula: TScm = OP + T + SB + TM + TP + C. Here OP is the wholesale price for materials, T is the cost of packaging, SB is the marketing margins, TM is customs duties, TR is shipping costs, C - Warehouse costs.

Wholesale prices of raw materials and containers are taken from collections or price lists of manufacturers. Sales margins are recorded as a percentage of prices. Shipping costs are taken in consideration of gross weight. The norms of warehouse costs are the following: for construction materials - 2%, for metal structures - 0.75%, for equipment - 1.2%.

Estimated prices for the transport of goods are presented in the collection of the same name. It consists of two parts: rail, road and sea transport. Each of them, in turn, contains tariffs for loading and unloading goods, depending on the packaging and mode of transport. Recalculation of the estimated cost for part of transportation costs (per 1 ton) is carried out according to the following algorithm:

1. Determines the type of sale price for the collection.
2. Specify the type of transport.
3. If this is a railway transportation, then the type of shipment is determined, the tariff, rate of loading is indicated.
4. The calculated sum is multiplied by the conversion factor from the net weight to the gross mass.
5. For road transport the tariff, class of cargo and extra charges is indicated.
6. Calculate the correction factor for loading and unloading.
7. The costs for transportation are determined.
8. The total cost of 1 ton is calculated.

Materials are divided into imported (cement, metal, pipes, glass, etc.) and local (brick, reinforced concrete structures, mortars, gravel, etc.). The cost of delivery of the first group of goods is higher than the second.

Labor costs

Estimated cost is the calculation of not only the costs of materials, but also of labor. Salary is determined based on the tariff-qualification guide. In it rates on categories are submitted. Allowances for work in heavy and harmful conditions range from 12% to 24%. The algorithm for calculating labor costs is as follows:

1. Resource method: Salary = (Actual w / w med.) / (Average number of working hours).
2. Estimated value: 3payplata = (C + M) ∙ I. Here C and M - the amount of costs for the object to pay labor of construction workers and machine operators, and - the index of the level of expenditure.
3. Distribution of costs: Salary = T * ((С1 * К * Кд * Кр * Кп + П) / Number of hours of work). In this formula, T is the labor input for the specific task, C1 is the tariff rate for the worker of the 1st category, K is the tariff coefficient, Kd is the surplus coefficient, Kp is the district coefficient, Kp is the premium coefficient, P is the other payments made at the expense of Salary.

In such a sequence, labor costs are determined.