Specification for real estate survey

Housekeeping offices all over the country have norms in this regard. It may be inconsistent everywhere, please pay attention!

Rules for the calculation of real estate area in Nanjing

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2007-0 1-04

Chapter I General Principles

The first calculation basis

In order to strengthen the management of real estate surveying and mapping in our city, standardize the calculation of real estate area, and protect the legitimate rights and interests of the parties, these rules are formulated in accordance with the relevant laws and regulations such as the Measures for the Administration of Real Estate Surveying and Mapping of the Ministry of Construction and the State Bureau of Surveying and Mapping, the National Standards and Specifications for Real Estate Surveying and Mapping (GB/T 17986-2000) and the relevant national technical standards, and combined with the actual situation of our city.

Article 2 Scope of application

These rules apply to the calculation of real estate area within the administrative area of this Municipality.

Article 3 The calculation of house area mentioned in these Detailed Rules refers to the calculation of the horizontal projection area of the house, that is, the calculation of the house construction area, including the calculation of the interior construction area and the existing construction area of the house.

Chapter II General Provisions

Article 4 Basic principles of housing investigation

Houses are measured by buildings, and the measuring points can be boundary points such as partition walls, columns and boundary nails.

Article 5 Basic conditions for calculating housing area

Strong structure; Equipped with an upper cover (excluding cornices); There are retaining structures or columns; The story is over 2.20 meters high.

Article 6 Housing construction area

Housing construction area refers to the horizontal projection area of each floor above the external wall (column) of the house, including the area of balcony, corridor, basement and outdoor stairs.

Article 7 The accuracy requirements of housing area measurement.

The accuracy of housing area measurement shall be implemented according to the second-class accuracy standard in the Code for Real Estate Measurement:

Tolerance: 0.04 √ s+0.002s.

Error: 0.02 √ s+0.001s.

Where: s is the building area in square meters.

The side length of the house is measured in meters, and the measurement result is 0.0 1 meter. The construction area is in square meters, and the calculation result is 0.0 1 square meter.

Article 8 Measuring tools

Housing survey should use instruments and tools with relative errors less than 1/800.

Article 9 The total number of floors of the house and the floor where it is located.

The height of the building is calculated according to the elevation above 2.20m.. Natural floors refer to the floors above +/-0 approved by the planning, and those below +/-0 refer to the underground floors. The total number of floors in a house is the sum of natural floors and underground floors.

Level refers to the level of the property owner's house in the building. The groundwater level is represented by a negative number.

False floors, attached floors (interlayers), inserted floors, attics (hidden buildings), decorative towers, equipment rooms and water tank rooms protruding from the roof are not included.

Chapter III Calculation of Building Construction Area

Article 10 The scope of calculating the total construction area.

(1) The construction area of a single-storey residential building is calculated as one floor; Multi-storey residential buildings are calculated according to the total construction area of each floor.

(two) the mezzanine, mezzanine, technical floor, transfer floor, stairwell, elevator and other parts of the house with a height of more than 2.20 meters.

(three) the passage through the residence, the entrance hall and the entrance hall in the residence are calculated according to the construction area of one floor. The corridor in the lobby and hall, which is more than 2.20 meters high, should be calculated according to its horizontal projection.

(4) Stairwells, elevator (sightseeing elevator) wells, pipeline wells, ventilation wells, lifting wells, garbage lanes, etc. Are included in the building area of the natural floor of the house. The tube well and ventilation well outside the main wall of the house are more than 2.20 meters high, and the construction area is calculated as one floor.

(five) all kinds of stairs, according to their corresponding space parts to calculate the construction area.

(six) the stairwell, water tank room, elevator room and other parts with a roof height of more than 2.20 meters.

(7) For sloping houses and flat roof houses, the construction area shall be calculated according to the part with a clear height of 2 2. 10/0m.

(eight) the construction area is calculated according to the horizontal projection of its periphery.

(9) For the equipment embedded in the load-bearing wall, the construction area shall be calculated according to the horizontal projection of the periphery of the load-bearing wall.

(ten) fully enclosed outdoor stairs, the construction area is calculated according to the horizontal projection of each floor.

(eleven) the corridor and overhead part within the projection range of the main wall of the house shall be calculated according to the horizontal projection of its periphery.

(twelve) outside the main wall of the house, the closed corridor and porch connected with the house are calculated according to the horizontal projection of its periphery.

(thirteen) the closed overhead corridor between houses is calculated according to the horizontal projection of its periphery.

(fourteen) basement, semi basement and its corresponding entrances and exits, according to the external wall (excluding lighting wells, moistureproof layer and protective wall) peripheral horizontal projection calculation of construction area.

(fifteen) curtain wall as a building envelope, the construction area is calculated according to its peripheral horizontal projection; If there are both load-bearing walls and curtain walls on the same floor, the construction area shall be calculated based on the load-bearing walls, and the wall thickness shall be calculated according to the load-bearing wall thickness.

(sixteen) there are columns or retaining structure, not completely closed garage, storage room and other special houses.

(17) Houses built on sloping land, with hanging feet as overhead floors and envelope structure, with a clear height exceeding 2 2. 10/0m.

(eighteen) expansion joints and settlement joints connected with the room, and the parts that can be used normally.

(19) Floor-to-ceiling windows with a clear height greater than 2 2. 10/0m.

(twenty) houses with inclined, curved and other non-vertical walls have a clear height of more than 2 2. 10/0m. If the wall of a building inclines outward beyond the outer edge of the bottom plate, the construction area shall be calculated according to the horizontal projection of the periphery where the bottom plate meets the retaining structure.

(twenty-one) the insulation layer of the external wall of the house.

(twenty-two) other similar situations, with reference to the implementation.

Article 11 Calculate half of the construction area.

(1) If there are roofs, columns, unclosed corridors and porches connected with the house outside the main wall of the house, it shall be calculated as half of the horizontal projection area of the roof.

(two) buildings with independent columns and single columns are calculated according to half of the horizontal projection area of the upper cover.

(3) Balcony (whether closed or not), corridor with envelope and cantilever corridor are calculated as half of the horizontal projection area of the periphery of envelope.

(four) if the overhead corridor is not closed, it shall be calculated according to half of the overlapping area of the horizontal projection of the upper cover and the periphery of the retaining structure.

(five) the outdoor stairs that are not closed are calculated according to half of the horizontal projection area of each floor.

(six) other similar situations, with reference to the implementation.

Twelfth do not calculate the scope of construction area.

(1) Houses with a height of less than 2.20 meters.

(2) Columns, beams and other components, fittings, decorative columns, decorative glass curtain walls, cribs, footholds, steps, column-free awnings, etc. Stick out from the wall of the house.

(3) An overhead corridor with no cover between houses.

(4) The ceiling, balcony, garden, swimming pool and water tank of the house.

(five) used as a road, driveway arcade and the ground floor below the street.

(six) to approach the bridge, elevated roads, viaducts and sidewalks as the roof of the house.

(7) mobile houses and temporary houses.

(eight) independent chimneys, water towers, pools, pools, underground civil air defense trunk lines and branches.

(nine) expansion joints and settlement joints between houses that are not connected with the interior of the house.

(ten) buildings similar to balconies, verandahs and eaves galleries that are not connected with the interior.

(1 1) Balcony, corridor and catwalk that cannot be completely covered by the top cover or the top cover of this floor.

(12) bay window

(thirteen) the design is connected with the balcony and the location and size of the equipment parts are clear.

(fourteen) the space under the stairs is calculated by the construction area.

(fifteen) ornamental building facilities with a roof but no envelope.

(sixteen) other similar situations, with reference to the implementation.

Chapter IV Calculation and Allocation of Construction Area

Thirteenth * * * should follow the principle of sharing area.

* * * The interior area is shared according to the proportion of the building area of the relevant unit. If both parties have an agreement on the ownership of the parts used by * * *, such agreement shall prevail.

Article 14 * * * Calculation formula for prorated area.

δSi=K？ silicon (Si)

∑δSi

K = ——

∑Si

Where: k is the * * * area sharing coefficient (rounded to 6 decimal places);

Si—— the interior construction area of each unit participating in the allocation, in square meters;

Δ Δ Si-shared area of each unit, square meters;

∑δSi————× Total area to be shared, in square meters;

∑ Si-the total construction area of each unit participating in the apportionment, in square meters.

Fifteenth housing indoor construction area

The interior construction area of a house consists of three parts: interior usable area, interior wall area and interior balcony construction area.

(1) The usable area in a house refers to all available space in the house. Covered chimneys, ventilation pipes, tube wells, etc. Those not included in the structural area are included in the usable area, and the interior wall decoration thickness is included in the usable area.

(2) The interior wall area of a house refers to the area occupied by maintenance or load-bearing walls or other load-bearing supports around the use space in the house, in which the partition wall between houses, the partition wall between houses and public building space, the external wall (including gables) and other * * * walls are included in the interior wall area according to half of the horizontal projection area. The self-contained walls (columns) in the suite are all included in the wall area of the suite according to the horizontal projection area.

(3) The indoor balcony construction area refers to the sum of the indoor balcony construction area, which is calculated according to the horizontal projection area between the balcony periphery and the external wall of the house.

The balcony-like part that runs through the adjacent suites is divided into indoor areas of relevant suites according to the partition walls of the suites.

Sixteenth can be included in the distribution area of the xx part and the xx part.

* * * The use part located in the building and only serving the building can be included in the common area. Among them, elevator shaft and machine room, stairwell, pipeline shaft, ventilation shaft, garbage chute, public hall, public corridor, substation room (power distribution room), equipment floor (room), water pump room, water tank room, fire control monitoring room, fire stairs (passage), living pool, fire pool, sewage treatment room, boiler room, refrigeration room, etc. Half of the horizontal projection area of the partition wall and external wall (including gables) between the set and * * * is included in the assessed area.

Seventeenth * * * not included in the assessed area of the part used by * * *.

(a) the bicycle garage marked on the planning approval map.

(two) the bottom overhead floor marked on the planning approval drawing.

(three) the refuge floor (room) marked on the planning approval map.

(four) the equipment rooms marked as multiple buildings or communities on the planning approval drawing.

(five) real estate development enterprises and other construction units shall be handed over to all owners for property management in accordance with regulations or agreements.

(6) Total planned construction of indoor motor vehicle parking spaces 15%.

(7) The outdoor staircase is the podium service tower.

(eight) supporting facilities built outside the building to serve the building.

(9) Stairwells, elevators, pipe wells, etc. It only serves a certain functional area, and it is located in the range perpendicular to other functional areas.

(10) Non-enclosed corridors and porches outside the first floor of commercial and office buildings.

(eleven) the planning and design of stairwells, hallways and other * * * parts with a floor height of less than 2.20 meters.

(12) The development and construction unit promises * * * some houses to all owners.

(thirteen) other * * * similar to the above situation has * * * part.

Eighteenth is not included in the * * * attached housing construction area.

(1) Special garages and parking spaces that can be sold.

(two) the business premises approved by the planning department.

(3) Kindergartens, schools, clubs (museums), community service offices, hospitals and farmers' markets.

(four) as the basement of civil air defense engineering.

(five) other ancillary houses similar to the above situation.

Nineteenth ×××× has been allocated the construction area category.

(1) The shared floor area of this building is * * * *.

Refers to the construction area of the * * * part that serves the whole building.

(2) The * * * shared construction area of the functional area.

Refers to the construction area of the part of the building that serves the functional area.

(3) Allocated construction area * * * Interior construction area

Refers to the building area of each floor of the house that serves the * * * part of the floor.

Twentieth residential buildings * * * allocation method of construction area.

(a) each unit in the building has different design functions, and the distribution coefficient can be set according to the function.

(2) The single apartment is designed according to the floor, and the * * * and * * parts are shared on the same floor, and the sharing coefficient is set according to the floor.

(3) According to the residential building designed by Lianjiadian, the construction area is calculated according to the calculation method of residential building.

Twenty-first multi-functional comprehensive building * * * has a construction area allocation method.

Firstly, according to the design function, the * * * building area included in the shared area of the multi-functional complex building is divided into three sharing categories according to buildings, functional areas and floors, and then shared in turn according to these three categories. In the same functional area, the distribution coefficient can be set according to different design and use conditions.

Twenty-second multi-functional building functional area division basis

The functional division of the multi-functional complex building is based on the planning and design, and the use function of the * * * use part is subject to the planning approval and marking.

Twenty-third basement houses * * * have the construction area of the allocation method.

The basement is connected with two or more independent houses on the ground. According to the planned indoor floor, it is divided into two parts: the ground and the underground. The above-ground part is divided into buildings to calculate the construction area, and the underground part is calculated separately. The * * * part of the underground that serves the above-ground part will not be shared.

Twenty-fourth slope structure housing * * * area distribution.

For houses with sloping roof structure, the indoor net height above 2 2. 10/0m is the interior area, and it participates in the allocation of * * * construction area.

Twenty-fifth basement parking area calculation and allocation.

The parking space in the basement is calculated according to the interior area, and only half of the stairwell, external wall and the * * * part serving the whole building are shared.

Twenty-sixth other parts participate in the distribution of * * * areas.

Basement, refuge floor (room), overhead floor, civil air defense basement, bicycle garage, parking lot (garage), clubhouse (hall), property management room and independent units not specified in the design are used as indoor areas to participate in * * * space allocation.

Equipment rooms such as substations (rooms), living pools, fire pools and water pump rooms serving multiple buildings are used as indoor areas, and only half of the projected area of external walls is shared.

Chapter V Supplementary Provisions

Article 27 The term "above" as mentioned in these Rules includes this number, and "below" does not include this number.

Twenty-eighth counties housing area calculation, can refer to these rules.

Twenty-ninth before the implementation of these rules, the development projects that have obtained the pre-sale permit for commercial housing and other types of houses that have been approved for construction shall still be implemented according to the original rules.

Thirtieth these rules shall be interpreted by Nanjing Real Estate Management Bureau.

Article 31 These Rules shall come into force as of the date of promulgation.

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