Necessary for calculating the cost of work and materials before electrical installation of electrical wiring in an apartment or private house and for settlement with the customer after the work has been completed. Estimates are needed for clarity and so-called transparency when making payments between an electrician and a customer.

The estimate for the power supply of a private house or apartment consists of a local estimate of the costs of completed electrical work. installation work and costs for electrical materials.

First, a preliminary estimate for electrical installation work and materials necessary for installation are calculated. It is possible to make a preliminary estimate on site during the first meeting with the customer. It is performed on a tablet, in the field - at a construction site, and therefore you need to understand that inaccuracies are possible. But the order of amounts for work and materials will be correct, that is, significant changes are excluded.

The most accurate calculation is possible when working at a computer, after the drawing has been made. On the architectural plan of the facility, an arrangement of sockets, switches and lamps is made, then distribution boxes are drawn; the locations of distribution boxes may change during installation, but their number will most likely remain the same.

After all the calculations have been completed, the electrician’s estimate for work and materials, along with the drawing, is provided to the customer, usually sent by email.

The second stage of working with estimates is to fill out the estimate with accurate data, all this is done during the electrical installation process.

After all electrical installation work has been completed, a general calculation is made and a ready, complete estimate is provided to the customer.

As an example, a sample estimate for the power supply of a private house is presented, total area about 130 square meters. The purchase of sockets, switches and lamps is usually carried out by the customer.

Drawing up an estimate, a sample of which is presented in Excel format, consists of filling out the appropriate cells in the appropriate rows and columns.

The estimate consists of three main sheets. The first sheet is a sheet with the main calculations between the contractor, represented by the electrician, and the customer, represented by the owner of the house or apartment. This sheet shows discounts, in percentages and in rubles. Also, the total amount for completed work without discounts is shown, total amount discounts and the total amount for work performed with discounts.

The second sheet is an estimate for all electrical installations and renovation work. The estimate consists of lists of work for three main components of electrical installation in a private house or apartment: the first part is installation of electrical wiring, the second part is installation of switchboards and automation, the third part is installation work, that is, work on installing sockets, switches, lamps and other electrical installations. products or devices. And repair work - such work is possible at sites where “masters” have already worked.

The third sheet is an estimate for materials, usually a preliminary estimate for electrical materials for installation and installation. It consists of three parts. The first part contains a list of electrical materials for the installation of electrical wiring, the second part consists of a list of materials necessary for the installation of switchboards and automation. And the third part of the estimate presents a list of materials for installation work.

For each object, a new estimate is drawn up, with necessary and additional items added or unnecessary items removed.

The example shows a preliminary estimate for the installation of electrical wiring, panels and automation, without work on installing sockets, switches and lamps, and a preliminary estimate for materials.

The drawing for calculating the estimate is not a project for the electrical supply of the house. It is done on one sheet for clarity and convenience when calculating estimates. All drawing work, at the preliminary stage, is performed as additional work during calculations. To complete a project, it takes time, and at this stage there is no clarity in the customer’s intentions and it is necessary to calculate and provide the customer with an estimate with all electrical installation costs as quickly as possible, and clarify the intentions!

I would like to point out one important point- drawing up and calculating estimates is work. But, almost always the cost of this work is included in discounts. This must be remembered!

Before performing electrical repair and replacement work, at the preparation stage a wiring diagram is drawn, according to which all the necessary calculations are made. First of all, they draw up an estimate for electrical installation work, which determines the amount of materials and labor costs. Thus, it is possible to determine in advance upcoming expenses and calculate the required quantity Money.

Documentation and calculation data

Before drawing up an estimate and carrying out calculations, it is necessary to collect a mandatory package of documents that will be used in further calculations.

The package includes the following several components:

• Plan of the facility with future electrical wiring marked.
• A separate project for the installation and connection of electrical equipment is drawn up.
• If necessary, technical specifications issued by the organization supplying electricity are required.
• In addition to the listed documents, you may need permission to connect to electrical network.

Depending on the specific characteristics of a particular object, an act is required defining balance sheet affiliation facility, as well as a document limiting operational responsibility and an order with a list of supplied equipment. These documents are usually necessary when performing work at industrial enterprises.

At the preparation stage, the materials are determined in advance. For example, switches and sockets should not be selected according to appearance, but based on technical characteristics. For higher loads, you should choose more powerful and, therefore, more expensive sockets, preferably with a grounding contact. Accordingly, the price of different products will differ, and the final estimate for electrical installation work will depend on this. Therefore, many owners who do not have special knowledge prefer to seek help from qualified specialists. They will help not only to select suitable electrical installation products, but also to select cross-sections of cable and wire products based on the expected loads.

Usually, the company that made the preliminary calculations subsequently carries out the ordered electrical installation work. When drawing up an estimate, it is necessary to take into account who provides the materials - the customer or the contractor. This is very important factor, which largely determines the final price of electrical installation in the estimate.

Settlement operations

Cost calculation electrical installation work takes up the bulk of the time required to prepare an estimate. This event is very serious, since it is necessary to cover the maximum amount of work. In the future, this will help to avoid situations when, at the end of the electrical installation, certain work is discovered that was not taken into account during the calculations.

Thus, unexpected overpayments arise that the customer did not expect at all. Therefore, you need to carefully determine the list of works and carefully select the necessary materials. Their number is calculated based on regulatory documents, where the consumption for each position is determined.

The search for equipment and materials should be carried out in several directions in order to compare prices from different suppliers. After this, only the most profitable offer. If after completing all preliminary calculations funds turn out to be insufficient, it is recommended to reconsider some positions, reducing the number of points or replacing some products with cheaper options.

Separately, they prepare and calculate estimates for electrical installation work. Here, too, there are some features that can turn into very unpleasant surprises. Some unscrupulous electricians calculate costs for individual points or square meters, which is contrary to regulatory requirements. In fact, first of all, the footage of the cable and groove, the number of switches, sockets, lighting fixtures and other equipment should be taken into account.

That is, instead of the vague concept of “point”, the installation of specific products and the cost of an electrician’s work to install each of them are calculated. This approach allows you to avoid unnecessary costs and pay only for services actually rendered. Every reputable company has approved fixed prices, which can be found in advance on the website or during the process of determining the scope of work. Thus, the price does not change during the entire period of electrical installation.

You can make a preliminary acquaintance with the prices yourself by using online calculator. With their help, you can draw up an estimate and determine the approximate cost of work in one-, two-, three-room apartment or in a private home. The simplified version produces results with a probability of 90% of the actual cost of installation work.

Using an online calculator

Many owners use an online calculator after receiving a commercial offer from a specialized organization. This allows you to double-check the received data, calculate and establish how much the required amount of work actually costs.

It is quite possible that you will have to refuse the company’s services and look for cheaper options. If there are certain difficulties with drawing up an online estimate, it is recommended to invite a specialist from third party organization so that he conducts a so-called independent examination. The cost of his work will in any case be significantly lower than possible overpayments at inflated prices.

Currently, most serious companies prefer to familiarize their clients with prices in advance using online calculators. Estimators enter all initial data in the presence of the customer, and the cost of materials is not taken into account. If desired, this data can also be entered based on average cost in the electrical products market.

You should also take into account the cost of consultations and drawing up the estimate itself, which includes the calculation of electrical installation work. This point is clarified immediately, even during the very first visit of the electrician. In addition, the company can have a significant discount on materials as a regular wholesale buyer. Therefore, in many cases it is more profitable to order them from a contractor rather than purchasing them yourself from dubious sellers.

Main stages of electrical installation work

Electrical installation work can only be entrusted to experienced specialists who have access and a license. It is necessary to strictly observe the sequence of installation of electrical wiring at industrial facilities and in residential buildings.

Stages of electrical installation work:

• Preparation. The old wiring is dismantled, routes are marked for laying power cables and low-current lines.
• Installation work. Grooves and technological holes for junction boxes are formed, cables and wires are laid. Electrical equipment and lighting fixtures are installed, electrical cables and wires are connected into a single network.
• Commissioning works. The system is launched, the functionality and correct operation of all elements are checked.

Working with us is profitable and convenient - we have fixed prices for electrical installation work, so the amount specified in the contract will not change after completion of the work. If the price list does not contain the type of work you need, call and our consultants will answer all your questions in detail.

We offer warranty services and technical support of the facility for 1 year. If an emergency occurs, you call us - our specialists will immediately come out and fix all the problems.

I used the services of master builder Ilya to build a bathhouse on my summer cottage. I was very pleased with the work performed, since he is truly a professional with a capital P, all my wishes were taken into account, and the structure itself was built strictly within the agreed time frame!

My mother advised me to use Ilya’s services, because last year his specialists renovated her kitchen, and she was very delighted. I liked the fact that the website lists all types of work and their costs, that is, you can calculate in advance how much a particular service will cost you.

They built a carport for us next to the company office. Of course, we designed everything individually, since it was necessary to equip a large area, and the guys completely coped with their task. The result is a very beautiful dome made of cellular polycarbonate, which goes well with the building itself.

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When creating any project, the estimate is an important document, the purpose of which is to determine all the required costs, taking into account the labor resources and materials expended. Electrical work plays a very important role in construction, so in in this case Saving money at the expense of quality is unacceptable. In this regard, a serious approach to drawing up estimates for electrical installation work is required.

Required Documentation

To compile estimated costs, you need a floor plan of the BTI, linked to the electrical equipment, and a design project for the electrical section. The following documents will also be required:

• permission to connect power;
• Specifications for electrical installation work;
• document on limitation of operational liability;
• statement of balance sheet ownership;
• electrical equipment project.

An explanatory note (calculation), a plan for group networks (lighting and electrical equipment), a diagram of additional potential equalization and approval of the plan by Rostechnadzor should also be included.

Among other things, an order for electrical installation equipment is drawn up, which includes information about the length of all wires, their manufacturer and auxiliary materials. The work order is drawn up with the same accuracy as the estimate.

Type of estimates

Estimates for electrical installation work are divided into two categories: summary (comprehensive), compiled for the entire building, and local (object-based), performed separately for the premises. Before you start writing them, you need to complete the investment justification. At the same time, the estimated cost of all work is determined. Documents can be presented in two types:

• estimate calculation (contains detailed cost with an overestimation of the cost level);
• estimate (calculation is carried out according to design drawings).

The second type allows you to create a better estimate for electrical installation work.

List of works

First of all, the costs of labor activity. This will help avoid price increases in the future. The list of works is presented below.

1. Installation of wiring (exposed) on brackets on concrete surfaces and on plaster walls.
2. Laying corrugated (open) wiring.
3. Placement of the electrical box on concrete, brick pad and plaster.
4. Installation of overhead junction box.
5. Installation of a switch, socket and decorative insert.
6. Installation of a junction box in plaster, brick wall and in concrete.
7. Changing the triple electric unit.
8. Installation of socket box.
9. Installation of a button for an electric bell.
10. Electric bell assembly.
11. Creating a hole in a plaster wall (brick or concrete wall) for a socket box.

Writing algorithm: stage 1

When drawing up an estimate for electrical installation work, it is necessary to determine exact amount, which is intended for the event in question. The operating principle is described below.

1. Get a floor plan linked to electrical appliances. BTI or a studio that compiles electrical projects can help with this.
2. Purchase permission to connect capacities. This should be done in the DEZ or HOA. From these same organizations you should obtain a document on the division of operational responsibility between the balance holder and the owner.
3. Bring everything to standards technical specifications, since they are strictly checked, and any deviation entails refusal.

Writing algorithm: stage 2

After completing the previous operations, you need to perform a number of important actions.

1. Contact good specialists who are drafting electrical appliances. At this stage, it is important to turn to experts, because only professionally performed work can guarantee safe and constant operation for a long time.
2. Choose the best company providing installation services. To do this, you should ask for information about it, find out customer reviews about the quality. Estimates for electrical installation work must include these costs.
3. Select suitable electrical appliances and include their cost in the estimate.
4. Calculate the ratio of costs and balances. If funds are tight, you should make the project simpler by choosing less expensive equipment.

Example of an estimate for electrical work

The object is written in the title of the document in question. The front page indicates total cost, installation costs, the calculated labor intensity and estimated wage. More detailed information is presented in the form of a table divided into several columns. A sample estimate for electrical installation work is presented below.

LOCAL ESTIMATE CALCULATION No. XXX
(type of estimate)
Name of works
Estimated cost:
Labor intensity according to standards:			thousand people/hour
Estimated salary:

	Item no.	Code and position number of the standard, name of work and expenses, unit	Quantity	Cost (per unit, rub.)		Total cost (RUB)			Labor costs, not required. obs. cars (person-hour)
					the ex. cars		wages for main workers	the ex. cars	service cars
				wages for main workers	incl. wages fur.			wages fur.

The first column is the serial number, the second is the position. The third indicates the code and the work itself. The fourth column should indicate the quantity. This is followed by columns with the cost of work and labor costs. At the end of the table, the results are summed up, and the person who compiled the estimate and the one who checked (position, signature, full name) sign.

Electrical installation work is a rather troublesome and time-consuming process. It is currently possible to calculate its cost different ways calculations: mixed, index, compensation, resource. The use of specialized tools will greatly simplify the task and avoid mistakes. software, because the cost of electrical installation work depends on the estimate, and this affects the quality and service life of the equipment. To do everything on high level, you can contact the estimate department of an electrical design company. Our specialists will do all the work efficiently in the shortest possible time.

An estimate is a calculation plan that displays all upcoming expenses for the implementation of a specific project. Preparation of estimates for electrical installation work- a very labor-intensive process that requires a professional approach on the part of the performer. Without this document, it will not be possible to find out the exact amount of expenses for the implementation of certain works. The entire process of drawing up estimates can be divided into several main stages.

First stage. Determining the type of estimate

There are two types of estimates for electrical installation of wiring and equipment:

1. Comprehensive estimate. The document specifies the costs of carrying out work throughout the entire facility (in all premises of a particular enterprise, office, etc.);
2. Local estimates. The cost of work in a separate room is taken into account.

In simple words, if you need to calculate the costs of laying, for example, wires in one office or workshop, look for a sample compilation local estimate. But complex calculations will be needed, for example, during the construction of a new facility or during its comprehensive renovation.

Second phase. Collection of documentation

So, before starting any calculations, it is necessary to collect a certain package of documentation, which includes:

• a plan of the room in which installation work will be carried out (the location of electrical equipment should be marked on the diagram);
• information from the supplier electrical energy O technical features facility maintenance;
• permission to connect the facility to the electrical network and the corresponding act on its service zones (documents must be obtained from the Homeowners Association and the Economic Development Authority);
• the design of electrical equipment and networks itself;
• agreement and at the same time technical task for a company providing labor. The document should calculate the cost of purchasing electrical equipment (such a document-contract is usually called a work order). The paper must include information about the technical characteristics, features of the composition of the purchased products, as well as information about the manufacturer of the goods.

It is necessary not only to collect the listed documents, but also to carefully study the information presented in them. Special attention should be given explanatory note and power supply design diagram.

After collecting and processing all official information about the object, the estimator must determine whether the upcoming costs are justified. A specialist will be able to answer this question only after familiarizing himself with the current tariffs for each type of upcoming work. It is also necessary to compare the actual conditions in which the electrical installation will be carried out with the information provided on the papers.

Once equipment costs have been calculated, compare them with the amount budgeted for the project. If expenses exceed those planned, start looking for similar equipment options at a lower price.

An important stage in drawing up an estimate is the selection of a contractor company providing electrical installation services. Your opinion about the organization should be formed not only by dry calculations of the cost of services, but also by reviews of previous clients. The costs of finding a contractor and formalizing an agreement with workers are also included in the estimate.

Final stage. Drawing up estimates for electrical installation work: program

After collecting and processing all the information, the time comes to draw up the final estimate, which can be of two types:

• estimate calculation (all costs are considered and checked down to the smallest detail, all kinds of expenses unforeseen by the project are taken into account);
• brief estimate (the report is based solely on existing design diagrams and drawings).

It is easy to guess that a better, more complete and useful estimate will be one compiled on the basis of a larger number of documents and taking into account all the nuances of specific electrical installation work.

The range of work that should not be missed in the estimate

Be sure to include labor costs for installers in your estimate. Without this data, information about project costs will be considered incomplete. In addition, do not forget to include the following work in the official document:

• laying wires open method(the cable is attached to the surfaces with brackets) and closed (the electrical wiring is laid in a box or corrugation);
• installation of plastic boxes on various surfaces (on concrete, brick or gypsum block walls);
• equipment of openings for junction boxes and socket boxes;
• cutting through walls;
• laying cables along grooves (grooves) and sealing holes;
• installation of all kinds of switches, sockets, electric bells, etc.;
• pulling wires through channels;
• installation of all components of the distribution board;
• organization of grounding (external type) and connection of the installation to electricity;
• activities to test laid wires and installed electrical equipment.

Drawing up estimates for electrical installation work: examples

Let's take a closer look at the structure of the local estimate for cable laying. On title page the document must indicate the date of its preparation, as well as the initials of those officials, with whom it was agreed and by whom it was approved. In addition, you should indicate the name of the construction site where electrical installation work will be carried out.

• estimated cost;
• costs for construction and installation work;
• the cost of the necessary equipment;
• additional expenses;
• standard labor intensity;
• the total amount of funds to pay wages to workers.

The above information should be placed in two columns, one of which indicates base price, and the other is the current one.

You also need to indicate the date on which the prices of work and equipment were calculated. This information can be indicated, for example, with the following phrase: “The estimate is compiled in prices for June 2017.” All other information in the document will be presented in schematic form. In the so-called “header” of the table, the following columns should be indicated:

1. Serial number of each type of work.
2. Pricing code and resource codes.
3. Name of work and costs.
4. Units of measurement (pieces - if about equipment, people - if about labor).
5. The number of these units.
6. Price per unit (you must indicate the currency in which the calculations were made).
7. Correction factors.
8. Cost in prices for the current year.
9. Item coefficient recount.
10. Conversion factors.
11. Cost in current prices (of work or equipment).
12. ZTR total person-hour.

Such an estimate may consist of several sections (categories), into which all electrical installation work can be roughly “sorted”. For example, manipulations for dismantling old devices will be placed in the first section, and work on wiring and connecting the cores of new wires will be placed in the second.

At the end of the document, you must indicate the total amount of costs for the implementation of electrical installation work, indicate the full name of the contractor and the person checking the estimate, and then certify the document with their signatures.

As you can easily see, budgeting is a complex and multifaceted process. It is important not only to have financial calculation skills, but also to know the basics of electrical installation, otherwise the estimator will not be able to understand the entire list of works and the features of professional equipment. That is why specially trained personnel are in demand, professional estimators, whom enterprises hire to carry out various types of calculations and compile financial statements for upcoming electrical work.