How to calculate usable area. Rules for calculating total, useful and estimated areas, construction volume, building area and number of storeys of buildings

WITH The cost of one square meter of private house area is always included when purchasing real estate or ordering a country house project. The area of a residential building is one of the main parameters for assessing suburban real estate. However, in regulatory documents the area of the house can be total, useful or estimated. We’ll talk about how to calculate the area of premises in a private house in this article.

Total area of the house

The total area of the house is determined as the sum of the areas of all floors (including technical, attic, basement).

The total area of the building includes the area of mezzanines, galleries and balconies of auditoriums and other halls, verandas, external glazed loggias and galleries, as well as transitions to other buildings.

The total area of the house also includes the area of open unheated planning elements of the building (including the area of the usable roof, open external galleries, open loggias, etc.).

The area of multi-light rooms, as well as the space between flights of stairs greater than the width of the flight and openings in floors of more than 36 m2 should be included in the total area of the building within only one floor.

The floor area should be measured within the internal surfaces of the external walls.

The floor area with sloping external walls is measured at floor level.

The area of the attic floor is measured within the internal surfaces of the external walls and the attic walls adjacent to the attic cavity.

Usable area of a private house

The area of an individual residential building is calculated as the sum of the areas of all premises located in it, as well as balconies and mezzanines in halls, foyers, etc., with the exception of staircases, elevator shafts, internal open stairs and ramps.

Estimated area of a residential building

The estimated area of a residential building is defined as the sum of the areas of the premises included in it, with the exception of: corridors, vestibules, passages, staircases, internal open staircases, elevator shafts, premises intended for the placement of engineering equipment and utility networks.

The total and usable area of a residential building does not include underground areas for ventilation of the building on permafrost soils; attic; technical underground (technical attic) with a height from the floor to the bottom of protruding structures of less than 1.8 m, as well as external vestibules, external balconies, porticoes, porches, external open stairs and ramps.

The area of a building's premises is determined by their dimensions, measured between the finished surfaces of walls and partitions at floor level (excluding baseboards). The area of the attic floor is taken into account with a reduction factor of 0.7 in the area within the height of the sloping ceiling (wall) at a slope of 30° - up to 1.5 m, at 45° - up to 1.1 m, at 60° or more - up to 0.5 m.

Construction volume of a country house

The construction volume of a building is defined as the sum of the construction volume above the ±0.00 mark (above-ground part) and below this mark (underground part). The construction volume of the above-ground and underground parts of the building is determined within the bounding surfaces with the inclusion of enclosing structures, skylights, domes, etc., starting from the level of the finished floor of each part of the building, without taking into account protruding architectural details and structural elements, underground channels, porticos, terraces, balconies, volume of passages and space under the building on supports (clean), as well as ventilated underground areas under buildings on permafrost soils.

How to calculate the building area of a cottage

The building area of a cottage is defined as the horizontal sectional area along the external contour of the building at the basement level, including protruding parts. The area under the building located on poles, as well as the passages under the building, are included in the building area.

How to determine the number of storeys of a private house

When determining the number of floors of a house, the number of floors includes all above-ground floors, including the technical floor, attic, and also the basement floor, if the top of its floor is at least 2 m above the average planning level of the ground. Underground for ventilation under buildings on permafrost soils , regardless of its height, is not included in the number of above-ground floors. If the number of floors is different in different parts of the building, as well as when the building is placed on a site with a slope, when the number of floors increases due to the slope, the number of storeys is determined separately for each part of the building. The technical floor located above the upper floor is not taken into account when determining the number of storeys of a building.

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PUBLIC BUILDINGS AND STRUCTURES - SNiP 2-08-02-89 (approved by Decree of the USSR State Construction Committee dated 16-05-89 78) (as amended on 06/23/2003) (2019) Relevant in 2018

RULES FOR CALCULATING TOTAL, USEFUL AND ESTABLISHED AREA, CONSTRUCTION VOLUME, BUILDING AREA AND NUMBER OF STORIES OF BUILDINGS

1*. The total area of a public building is determined as the sum of the areas of all floors (including technical, attic, ground and basement).

The floor area of buildings should be measured within the internal surfaces of the external walls. The area of mezzanines, passages to other buildings, glazed verandas, galleries and balconies of auditoriums and other halls should be included in the total area of the building. The area of multi-light premises should be included in the total area of the building within only one floor. The area of the attic floor is measured within the internal surfaces of the external walls and the attic walls adjacent to the attic cavity.

With sloping external walls, the floor area is measured at floor level.

2. The usable area of a public building is defined as the sum of the areas of all premises located in it, as well as balconies and mezzanines in halls, foyers, etc., with the exception of stairwells, elevator shafts, internal open stairs and ramps.

3*. The estimated area of public buildings is defined as the sum of the areas of all premises located in it, with the exception of corridors, vestibules, passages, staircases, elevator shafts, internal open staircases, as well as premises intended for the placement of engineering equipment and utility networks.

The area of corridors used as recreational premises in buildings of educational institutions, and in buildings of hospitals, sanatoriums, rest homes, cinemas, clubs and other institutions intended for relaxation or waiting for those served, is included in the calculated area.

The areas of radio centers, switching rooms, utility rooms at stages and stages, cinema equipment rooms, niches with a width of at least 1 and a height of 1.8 m or more (except for niches for engineering purposes), as well as built-in cabinets (except for built-in cabinets for engineering purposes) are included in the calculated building area.

4*. Underground area for ventilation of a building designed for construction on permafrost soils; attic; technical underground (technical attic) with a height from the floor to the bottom of protruding structures of less than 1.8 m, as well as loggias, vestibules, external balconies, porticoes, porches, external open staircases are not included in the total, usable and estimated area of buildings.

5*. The area of building premises should be determined by their dimensions, measured between the finished surfaces of walls and partitions at floor level (excluding baseboards). The area of the attic floor is taken into account with a reduction factor of 0.7 in areas within the height of the sloping ceiling (wall) at a slope of 30° - up to 1.5 m, at 45° - up to 1.1 m, at 60° or more - up to 0 .5 m.

6. The construction volume of a building is defined as the sum of the construction volume above the ±0.00 mark (above-ground part) and below this mark (underground part).

The construction volume of the above-ground and underground parts of the building is determined within the bounding surfaces with the inclusion of enclosing structures, skylights, domes, etc., starting from the level of the finished floor of each part of the building, without taking into account protruding architectural details and structural elements, underground channels, porticoes, terraces , balconies, volume of passages and space under the building on supports (clean), as well as ventilated underground areas under buildings designed for construction on permafrost soils.

7. The building area of a building is defined as the horizontal sectional area along the outer contour of the building at the base level, including protruding parts. The area under the building located on poles, as well as the passages under the building, are included in the building area.

8*. When determining the number of floors of a building, the number of floors includes all above-ground floors, including the technical floor, attic, and also the basement floor, if the top of its floor is at least 2 m above the average planning level of the ground.

The underground for ventilation under buildings designed for construction on permafrost soils, regardless of its height, is not included in the number of above-ground floors.

If the number of floors is different in different parts of the building, as well as when the building is placed on a site with a slope, when the number of floors increases due to the slope, the number of storeys is determined separately for each part of the building.

The technical floor located above the upper floor is not taken into account when determining the number of storeys of a building.

9*. The retail space of a store is defined as the sum of the areas of sales floors, premises for receiving and issuing orders, a cafeteria hall, and areas for additional services to customers.

APPENDIX 4*
Mandatory

Probably not very relevant. But perhaps those who have already started working with OKSs can explain something to me.
A man came with the following documents: Technical passport, court decision and cadastral passport of the premises.
The court's decision to recognize unauthorized reconstruction of the building and the allocation of a share in the form of premises (apartment No. 1), consisting of three rooms, living space and other cold premises (loggia, terrace, etc.) total area - X sq.m.
In the Technical Data Sheet there are drawings of all premises, an explication indicating the areas of all residential and non-residential premises and the total columns total area X sq. m. incl. residential (heated premises) - at sq. m.
In the cadastral passport: the total area is indicated - at sq.m. (i.e. residential only). At the same time, according to this person, the BTI insists that they should only indicate this in the passport... (?)
Thus, on the basis of this cadastral passport, ownership of a premises with an area of at sq.m. those. only for the residential (heated) part of it? Where will all the rest (cold ones) go?
As far as I remember, in my apartment the loggia is included in the total area and I have ownership rights to the entire apartment, including the cold loggia.
Are these blunders of a specific BTI? Or.... ?
You are using the terms a little incorrectly. There are 3 types of area in a room:
-living area (sum of living room areas)
-total area of living space (the sum of the areas of all rooms that make up this apartment, except for loggias, balconies, verandas and terraces)
-total area of the apartment (the sum of the areas of all rooms that make up this apartment, including the area of loggias, balconies, verandas and terraces, calculated with the appropriate coefficients)
the total area of the residential premises is registered (included in the hydraulic fracturing certificate).
for example: my apartment consists of: a living room (12m2), a living room (17m2), a kitchen (8m2), a bathroom (3m2), a corridor (6m2) and a loggia of 6 m2 (real). In this case:
living area of the apartment is 29m2
total living area - 46m2
total area of the apartment is 49m2
the hydraulic fracturing certificate will reflect an area of 46 m2
You are using the terms a little incorrectly
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Yes... I haven’t delved into this issue in detail yet... :(Thank you!
Ilshat|78:12:1328521180 said:

living area of the apartment is 29m2
total living area - 46m2
total area of the apartment is 49m2
the hydraulic fracturing certificate will reflect an area of 46 m2
Click to expand...

So:
Then, for registration, this value must be indicated somewhere in the cadastral passport - 46 sq.m. But in what I saw, there is only one value - the one that in your case would be - 29 sq.m. And then it would have migrated to the hydraulic fracturing certificate.
Or did I somehow look at this cadastral passport incorrectly?
Oh and by the way.... general actual The area of your apartment is 52 sq.m., but only 46 are registered - it turns out illogically.
Where did the three meters go? Who is their owner?
and by the way... why then do we need this virtual value “total area of the apartment - 49 sq.m.”? What's the point?
The basic concept of “total area of residential premises” is contained in the Housing Code of the Russian Federation. It is used in relations regulated by the Housing Code of the Russian Federation, in particular, related to the provision of residential premises under a social tenancy agreement - to determine the accounting standard for the area of residential premises, the amount of payment for the use of residential premises, fees for the maintenance and repair of residential premises, etc. According to Part 5 of Article 15 of the RF Housing Code, “the total area of a residential premises consists of the sum of the areas of all parts of such premises, including the area of auxiliary premises intended to satisfy citizens’ household and other needs related to their residence in residential premises, with the exception of balconies, loggias, verandas and terraces."
In the same meaning, but in more detail, the concept under consideration is given in the Resolution of the State Statistics Committee of the Russian Federation dated April 8, 2003 No. 42 “On approval of statistical tools for conducting the main stage of the National Survey of Household Welfare and Participation in Social Programs (NOBUS)” (hereinafter referred to as the Resolution ). The resolution established that the total (useful) area of a dwelling is defined as the sum of the areas of all living rooms and utility rooms (kitchens, corridors, bathrooms, pantries, built-in wardrobes, etc.) of apartments and houses, including the area of heated and habitable throughout the year, premises attached to the house (terraces, verandas, etc.). The total (usable) area does not include the area of staircases, vestibules, lobbies, open terraces, balconies, etc.
Living space, according to the Resolution, is the area of living rooms in residential premises intended and used for living (excluding the area of built-in wardrobes).
From this it can be seen that the concept of “living area” is narrower in content than the concept of “total area of living space”, since it includes the area of living rooms - bedrooms, living rooms, which is an integral part of the total area of living space. And the concept of “usable area” of a residential premises is used for the purposes of the Resolution (household welfare survey) in a meaning equivalent to the concept of “total area of living premises”.
In a slightly different meaning, the concept of “total area of residential premises” is used for the purposes of construction, accounting and technical inventory of the housing stock. Thus, on the basis of the Instructions on the accounting of housing stock in the Russian Federation, approved by order of the Ministry of Land Construction of Russia dated August 4, 1998 No. 37 (hereinafter referred to as the Instructions), the total area of an apartment is determined as the sum of the areas of its premises, built-in closets, as well as the areas of loggias, balconies, verandas, terraces and cold storage rooms, calculated with reduction factors.
Living area according to the Instructions is defined as the sum of the areas of living rooms.
GEF Did you realize that you copied and posted it? all concepts about the area that is included in the Tech. the floor plan is prescribed in the order approving the form and how to measure it in the order determining the area. Evgeny123 On the 30th there was a meeting on OKS after the debate, we unanimously came to the conclusion that it is best not to use the technical passport and throw it away immediately. It’s easier to draw up a declaration and have it certified by the copyright holder. As for the information that is in the State Property Committee, they explained it to us in this way. if changes were not taken into account according to OKS. i.e. BTI did not put the objects on the CU according to the technical passport, but only transferred the information contained in them, then in this case the placement is done on the CU and the information that was transferred to the BTI will be overwritten by the Technical Plan and everything will be normal. The declaration has also already been approved. Last week I personally submitted the technical plan for the premises according to the declaration. nothing complicated. just read the orders carefully and do not forget that the technical plan of the premises, which is made on the basis of the declaration, must include in its appendix an off-scale drawing, but in compliance with proportions, drawn by hand in blue ink and certified by the signature and seal of the CI. after the meeting, everyone unanimously decided that the technical passport is unnecessary and let the BTI know where they go and what they will do with it
Thank you, Ilshat And GEF, for clarification regarding the areas.
But this still needs to be laid down and digested.
Thank you, CBS, for practical advice, but this is not relevant for us yet. Everything is in the hands of the BTI and there is no road to this clearing in our region yet.
I have another question:
Here is a house, which contains part of the premises (indicated by capital letters A, A1, A2, etc.), which, following the terminology, are included in the total area of the living space. And there are other (auxiliary use, following the terminology of the technical passport) premises (verandas, loggia, cold extension, indicated by capital letters a1, a2, a3, etc.) all of this, in accordance with clause 1.10 of the CP, is part of a residential building.
But in line 1.3 of the CP “Total area of the premises” only the sum of the areas of the premises indicated in capital letters is indicated. Naturally, this exact area will be indicated in the certificate of registration of ownership.
What about the rest of the rooms? Who then is their owner? And how is his right confirmed?
Evgeny_123 You cannot understand one thing. terraces and verandas are structural elements of the building. There are no such elements in the room. there is either a balcony or a loggia. If we take your specific case with a part of the house registered as an apartment, then what is indicated in the Technical passport as a veranda and a loggia will not be included in the total area of the room since it is not isolated, but what was called a cold extension will be part of the room and its area will be be included in the total area of the room
Kos|78:12:1328545412 said:

Evgeny_123 you cannot understand one thing. terraces and verandas are structural elements of the building. there are no such elements in the room
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I can't... I really can't...
Why is a veranda a large glassed-in room (in the physical sense) from which one door leads into the room, the other to the street is not a room (in the BTI sense), although it is perfectly used for living in the summer. And this is quite an isolated part, which is used by people living in this part of the building (apartment).
By the way, they didn’t turn on the cold extension either... they were all classified as " premises auxiliary use" (wording from the technical passport).
But what happens when these same auxiliary premises do not have an owner? The other premises in this house (apartment) have their own verandas... and are they also ownerless? The common shared ownership of the house has been terminated... it turns out that the house has two premises, each of which has its own owner, and a bunch of “auxiliary premises” - ownerless. This is some kind of nonsense.
I looked at the Order of the Ministry of Justice of the Russian Federation dated February 18, 2008 N 32 “On approval of forms of cadastral passports of a building, structure, unfinished construction site, premises, land plot” (Registered with the Ministry of Justice of the Russian Federation on February 18, 2008 N 11179) there in the form of a CP
relative to the line
"1.3. Total area of the premises<4>__________________________________________" it says:
"<4>The total area of the room is indicated in square meters with an accuracy of one tenth of a square meter."
And what in this case is meant by the total area of the room?
Found
Order of the Ministry of Economic Development of the Russian Federation (Ministry of Economic Development of Russia) dated September 30, 2011 N 531 Moscow “On approval of the Requirements for determining the area of a building or premises”
Requirements for determining the area of a building or premises
I. General requirements for determining areas
1. The area and total area of a building or premises are determined as the area of the simplest geometric figure (rectangle, trapezoid, right triangle, etc.) or by dividing such an object into the simplest geometric figures and summing the areas of such figures.
2. The value of the area and total area of a building or room is determined in square meters, rounded to 0.1 square meters, and the values of measured distances used to determine areas are determined in meters, rounded to 0.01 meters.
3. For premises in buildings constructed according to standard designs from prefabricated prefabricated structures with a standard layout on the floors, it is allowed to determine the areas by the basement, first and standard floors. For subsequent floors, the area can be taken as standard, with the exception of rooms in which there are layout changes.
II. Determining the area of a building or room
4. The area of the building is determined as the sum of the areas of all above-ground and underground floors (including technical, attic, and basement).
The floor area should be measured within the internal surfaces of the external walls at a height of 1.1 - 1.3 meters from the floor.
The floor area with sloping external walls is measured at floor level.
The area of the building includes the area of mezzanines, galleries and balconies of auditoriums and other halls, verandas, external glazed loggias and galleries.
The area of the building also separately includes the area of the open unheated planning elements of the building (including the area of the usable roof, open external galleries, open loggias, etc.).
The area of multi-light premises, as well as the space between flights of stairs greater than the width of the flight and openings in floors of more than 36 square meters should be included in the area of the building within only one floor.
5. The area of the room is determined as the sum of the areas of all parts of such a room, calculated by their sizes, measured between the finished surfaces of walls and partitions at a height of 1.1 - 1.3 meters from the floor.
III. Determination of the total area of a residential premises, residential building
6. The total area of a residential premises, a residential building consists of the sum of the area of all parts of such a premises, a residential building, including the area of auxiliary premises intended to satisfy citizens' household and other needs related to their residence in the residential premises, with the exception of balconies, loggias, verandas and terraces.
The area of auxiliary premises includes the area of kitchens, corridors, baths, toilets, built-in closets, storage rooms, as well as the area occupied by the internal staircase.
The measurement of distances used to determine the total area of a residential premises, a residential building, is carried out along the entire perimeter of the walls at a height of 1.1 - 1.3 meters from the floor.
When determining the total area of a residential premises or residential building, you must:
- the area of niches with a height of 2 meters or more should be included in the total area of the premises in which they are located. The area of arched openings should be included in the total area of the room, starting from a width of 2 meters;
- the floor area under the flight of internal stairs, if the height from the floor to the bottom of the protruding structures of the flight is 1.6 meters or more, should be included in the total area of the room in which the stairs are located;
- the area occupied by protruding structural elements and heating stoves, as well as located within the doorway, should not be included in the total area of the premises.
...
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And for some reason it turns out this way...
Why is a veranda a large glassed-in room (in the physical sense) from which one door leads into the room, the other to the street is not a room (in the BTI sense), although it is perfectly used for living in the summer. And this is quite an isolated part, which is used by people living in this part of the building (apartment).
Click to expand...

I apologize about the veranda. the veranda is auxiliary and is also included in the total area of the room when determining the area of the room. BTI people used to have their own quirks: they included unheated rooms in the total area along with balconies, then they didn’t include them, they had time that there were seven Fridays a week.
Evgeny_123|78:12:1328548827 said:

It turns out that it is not specifically stated anywhere that these auxiliary premises should remain ownerless...
And for some reason it turns out this way...
Click to expand...

Again. they are included in the total area of the room.
Kos|78:12:1328550832 said:

again. they are included in the total area of the room
Click to expand...

That's what I think!
But in the line of the Cadastral passport of the premises “1.3 Total area of the premises” BTI officers put the total area residential premises! Excluding the area of auxiliary premises. And they persist in it! They claim that this is how it is supposed to be.
Essentially taking away part of the property from the owner.
That is the question. What should be the total area there?
#10
Evgeny_123|78:12:1328556337 said:

But in the line of the Cadastral passport of the premises “1.3 Total area of the premises” BTI officers put the total area of the living premises! Excluding the area of auxiliary premises.
Click to expand...

The area of auxiliary premises is not excluded from the total area of residential premises, but only the area of loggias, balconies, terraces and verandas. The list of exceptions is closed.
#11
The area of auxiliary premises is not excluded from the total area of residential premises, but only the area of loggias, balconies, terraces and verandas. The list of exceptions is closed.
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Well, in general, everything is so... although the area of the premises called “cold extension” in the technical passport is also excluded.
The question then is: On what basis?...
and then the second: How then can the owner register and confirm his right to these premises?
(Addendum)
Ilshat|78:12:1328580268 said:

From the total living area
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And further :)
Okay, we're talking about residential premises, but the line of the cadastral passport is called:
1.3 Total area of the room
If we put in this line general area and the question would not arise, all the meters would be in their place. But under this heading is actually the total area residential premises (????)... why? hence the questions...
#12
True, the area of the premises called “cold extension” in the technical data sheet is also excluded.
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the fact that they excluded the area of the “cold extension” room is already wrong
Evgeny123|78:12:1328590851 said:

The question then is: On what basis?...
Click to expand...

Article 15 of the Housing Code of the Russian Federation
Evgeny123|78:12:1328590851 said:

and then the second: How then can the owner register and confirm his right to these premises?...
Click to expand...

Apparently, no way. Well, except that these premises should be reflected in the graphic part of the technical document (cadastral passport) and are an integral part of this premises
Evgeny123|78:12:1328590851 said:

but the line of the cadastral passport is called:
1.3 Total area of the room
Click to expand...

It seems like there is some kind of regulatory document that says that in this column of the cadastral passport for residential properties the parameter “total area of residential premises” is reflected, and for non-residential objects - “total area of premises.” i.e. in non-residential buildings, the areas of loggias, balconies, verandas and terraces are included in the total area of the premises.
#13
::rtfm.gif:: Housing Code art. 15 p5. The total area of a residential premises consists of the sum of the area of all parts of such premises, including the area of auxiliary premises intended to satisfy citizens' household and other needs related to their residence in residential premises, with the exception of balconies, loggias, verandas and terraces.
#14
Ilshat|78:12:1328592967 said:

It seems like there is some kind of regulatory document that says that in this column of the cadastral passport for housing facilities it is reflected...
Click to expand...

Here! Thank you.
I believe that some kind of paper probably exists. The person at the BTI stupidly answered this question that this is law 221. They shrugged it off. Realizing that the person has not read this law.
I'm trying to find... it hasn't worked yet... But the situation is strange.
(Addendum)
fucker|78:12:1328594295 said:

The total living area consists of...
Click to expand...

Fine! Nobody argues with this...
But the document is called Cadastral passport of the premises
and line 1.3 of this document is called: Total area of the room
Based on this document, the right is registered.
Where does a person’s right to auxiliary premises go if the BTI, for unknown reasons, enters the total area in line 1.3? residential premises?
#15
Evgeny123|78:12:1328595118 said:

Where does a person’s right to auxiliary premises go if the BTI, for unknown reasons, enters the total area of the living space in line 1.3?

cancelled/lost force Editorial from 01.01.1970

Name of document	"PUBLIC BUILDINGS AND STRUCTURES. BUILDING STANDARDS AND RULES. SNiP 2.08.02-89" (approved by Resolution of the USSR State Construction Committee dated 16.05.89 N 78) (as amended on 26.01.99)
Document type	resolution, norms, list, rules, requirements
Receiving authority	gosstroy ussr
Document Number	78
Acceptance date	01.01.1970
Revision date	01.01.1970
Date of registration with the Ministry of Justice	01.01.1970
Status	cancelled/lost force
Publication	The document was not published in this form (as amended on May 16, 1989 - Gosstroy of Russia - M: State Unitary Enterprise TsPP, 2000)
Navigator	Notes

"PUBLIC BUILDINGS AND STRUCTURES. BUILDING STANDARDS AND RULES. SNiP 2.08.02-89" (approved by Resolution of the USSR State Construction Committee dated 16.05.89 N 78) (as amended on 26.01.99)

RULES FOR CALCULATING TOTAL, USEFUL AND ESTABLISHED AREA, CONSTRUCTION VOLUME, BUILDING AREA AND NUMBER OF BUILDINGS

1. The total area of a public building is defined as the sum of the areas of all floors (including technical, attic, ground and basement).

With sloping external walls, the floor area is measured at floor level.

The area of corridors used as recreational premises in the buildings of educational institutions, and in the buildings of hospitals, sanatoriums, holiday homes, cinemas, clubs and other institutions intended for relaxation or waiting for those served, is included in the standardized area.

4*. The area of the underground for ventilation of a building designed for construction on permafrost soils, an attic, a technical underground (technical attic) with a height from the floor to the bottom of protruding structures of less than 1.8 m, as well as loggias, vestibules, external balconies, porticos, porches, external open staircases are not included in the total, usable and estimated area of buildings.

5. The area of buildings should be determined by their dimensions, measured between the finished surfaces of walls and partitions at floor level (excluding baseboards). When determining the area of an attic room, the area of this room with a sloping ceiling height of at least 1.6 m is taken into account.