# What is the difference between inside area and building area?

When we were at school, our teachers told us that the formula is fixed, and we have to learn to understand and apply it.

So how should these stiff formulas be applied? This requires that before signing the contract, the buyer must understand all the area data involved in the above formula with the developer, and sign the contract clearly in black and white.

Quick calculation coefficient: for towers or residential buildings with elevators, the calculation coefficient of usable area is: building area ÷ 1.434; For multi-storey residential buildings or buildings without elevators, the calculation coefficient of usable area is: building area ÷ 1.333.

What is the difference between inside area and building area? Everyone is talking about buying a house, but it has always been a “unclear” problem to calculate the price according to what to buy a house.

are not included in the use area.

The building area is larger than the use area.

For property buyers, the house price is tens of thousands of yuan per square meter, so the house purchase must be calculated carefully, and it is necessary to clarify the pricing! How to distinguish between “inside area” and “building area”? Inside area, also known as use area, can be understood literally as the area really used by the head of household.

This is only the first step.

In housing sales, developers calculate the price based on the construction area.

It is based on the use area plus the area occupied by the wall.

If the buyer thinks these data are too complicated, it is more reliable to ask a professional acceptance company to help accept the house at this time…

The calculation of residential use area can directly reflect the use status of housing, but the use area is generally not used to calculate the price in housing sales.

Should it be based on the building area or the internal area? There are different practices throughout the country.

Chimneys, ventilation ducts, various pipe shafts, etc.

Generally speaking, the use area accounts for about 60% to 70% of the total area.

The use area includes: bedroom, living room, aisle, dining room, kitchen, storage room, wall cabinet, non hanging cabinet, indoor stairs, balcony and other spaces.

The use area is the building area minus the wall area in the set.

In addition, it must also specify how to solve the problem if the real area is inconsistent with the contract data at the time of house collection.

The main categories excluded from the use area are: 1 Pilasters, pipe shafts, ventilation ducts and garbage ducts protruding from the inner wall;  2.

Is it enough to master these formulas? Of course not.

The professional statement refers to the sum of the plane areas of each floor measured by the peripheral horizontal plane above the plinth of the outer wall of the residential building.

Balcony and general door openings, roof platforms and hanging cabinets;  3.

However, in the disputes over the pre-sale of commercial housing in recent years, the complaints of area shrinkage show a straight-line upward trend.

The fundamental reason is that consumers do not understand the calculation method of housing construction area, resulting in the fraud of developers.

Then, several formulas must be understood: building area = built-in building area + shared area ÷ shared area = building area × Sharing coefficient ÷ sharing coefficient = total shared building area ÷ total building area ÷ building area in the suite ＝ use area in the suite ＋ wall area in the suite ＋ balcony area ÷ summary.

If there is an empty part in the indoor floor slab of a residence, the empty part is not included in the use area;  4.

Professional terms refer to the sum of the net areas directly used for production or living in the plane of each floor of the building.

If it is inconsistent, it shall be solved according to the principle of more refund and less compensation or the way signed on the contract.

How to calculate “building area” and “usable area” (?) first is conversion! The conversion of building area and use area depends on the nature of the building.

The accurate figure can only be known through surveying and mapping.

Because there are many shared areas involved, and different houses have various free areas and others, acceptance measurement is a very professional thing.

The most important step is to take the measuring tools with you when accepting the house, and personally measure all the space area to see whether it is consistent with the contract.

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