What is the general EFF of a house, and what is the normal EFF

1. Residential housing efficiency.

How much?1. There are great differences in the "EFF" of each community, under normal circumstances, the "EFF" of multi-storey residential buildings is between 85 90, the "EFF" of small high-rise residential buildings is 80 85, and the "EFF" of high-rise buildings is relatively low, generally at 75 80, and the serviced apartments will be lower.

2. Generally, the EFF is more appropriate at about 80, and the common part is spacious and magnificent, and the area is apportioned.

It won't be too much, it's more affordable. Generally, the EFF of multi-storey buildings is 88, and the EFF of high-rise buildings is 72.

2. How to calculate the housing efficiency of residential housing?

Formula: EFF Floor Area of the suite.

Area of commercial buildings for sale.

The area of commercial buildings for sale, the floor area of the suite, and the common floor area apportioned.

The floor area of the suite, the usable area of the suite, the area of the wall in the suite, the floor area of the balcony.

Apportioned common floor area Common floor area apportionment factor Floor area within the suite.

Common floor area apportionment factor Sum of common floor area Floor area in the suite.

1. The EFF is the ratio of the building area to the construction area of the suite, which is one of the criteria for measuring the size of the actual usable area.

2. It stands to reason that the higher the EFF, the higher the cost performance of the house. But the higher the EFF, the better. Pooled area.

Including stairs, corridors, elevators, stairwells, etc., if the shared area is too small, it will make the common area crowded.

3. For example, high-rise residential buildings only have one elevator in order to reduce the shared area, and people have to wait for the elevator for a long time during the rush hourFor example, in order to improve the housing rate, the aisles and corridors are made very narrow, and it will be very inconvenient for the owners to move furniture, large appliances and other bulk items when moving;For example, in order to improve the housing rate, some real estate projects have compressed the fire escape.

space, which can pose a potential safety hazard to the owner.

4. There should be a reasonable limit to the EFF, not the higher the better. Buyers should not blindly pursue high housing rates, and when exceeding reasonable limits, they must pay attention to distinguishing whether they are sacrificing the quality of living or making a breakthrough in design.

Generally speaking, houses with elevators have lower EFFs than houses without elevators;The occupancy rate of new homes is lower than that of old houses. The EFF of the elevator room is generally 70 75, and many old houses without elevators that are more than 20 years old can reach more than 90, which is also an important reason why many people choose to buy second-hand houses with a longer age.

EFF normal range:

1. Multi-storey housing: the housing efficiency rate is generally 88%-95%, and the share coefficient is 5%-12%.

2. Small high-rise slab buildings: the housing rate is generally 85%-88%, and the share coefficient is 12%-15%.

3. High-rise slab buildings: the housing rate is generally 78%-85%, and the share coefficient is 15%-22%.

4. High-rise terrace residential: the housing rate is generally 75%-78%, and the share coefficient is 22%-25%.

Factors influencing EFF:

1. Room type structure (several ladders and several households). For example, the common area that needs to be apportioned by one ladder and multiple households may be almost the same as that of one ladder and two households, but if the number of households increases and the construction area in the total suite increases, the common area that each household needs to share will decrease.

2. The form of the real estate. Generally speaking, the high-rise has the lowest EFF, the small high-rise has the highest EFF, and the multi-storey has the highest EFF.

3. Property type. Generally speaking, the plate type has the highest EFF, followed by the stacked type, and the point type is lower.

4. The size of the public activity area. Generally speaking, high-quality properties are mostly built with high lobbies, spacious elevators, and indoor garages, which will occupy a large amount of shared area, so the housing efficiency is relatively low.

1. The housing rate of commercial housing is generally between 75% and 80%, and the calculation method is: building area in the suite = usable area in the suite + wall area in the suite + balcony construction area.

2. What is the appropriate EFF?

Multi-storey dwellings: 85 90

Small high-rise: 80 85

Upper floor: 75 80

Office building: 55 60

If the EFF is too high, the area of the relative public part will be less, then it may affect the width of the stairs, the comfort of the lobby, the number of elevators, etc. The EFF should be high and tasteful, and it cannot be exchanged for sacrificing convenience and safety; A low EFF should be low and valuable, and it should not cause unnecessary waste.

The housing yield of commercial housing is generally between 75% and 80%, and the calculation method is: building area in the suite = usable area in the suite + wall area in the suite + balcony construction area. Calculating the area of the house, that is, calculating the floor area, so the EFF is too low and unaffordable, and too high and inconvenient.

Because the higher the housing rate, the smaller the shared area, which will make the occupants feel depressed.

In today's era of land at a premium, people certainly hope that the larger the area, the better, but in practice, the higher the EFF, the better? If the EFF is too high, it means that the supporting area of the shared part is also less, and it is very likely to affect the width of the stairs, the comfort of the lobby and the number of elevators. What's more, it will also lead to a reduction in the owner's shared area, which will make the occupants feel crowded and inconvenient, so the higher the housing rate, the better, depending on the actual situation.

The higher the EFF, the better, and there should be a reasonable degree. The shared area includes stairs, corridors, elevators, stairwells, etc., and if the shared area is too small, it will make the common area crowded. If the tower is purchased, if the public pool of more than ten households on one ladder is too small, it will inevitably affect the normal access and living comfort.

At present, the market agrees on the so-called housing efficiency standard, which requires that the housing efficiency of high-rise buildings shall not be less than 70%, and the housing efficiency of multi-storey buildings shall not be less than 75%. Buyers should not blindly pursue high housing yields, and when exceeding reasonable limits, they must pay attention to discerning whether they are at the expense of living comfort or a breakthrough in design.

Efficiencies vary from home to home, as follows:

Multi-storey dwellings: The EFF rate is generally 88% to 95%, and the share coefficient is 5% to 12%.

Small high-rise slab buildings: The EFF rate is generally 85% to 88%, and the share coefficient is 12% to 15%.

High-rise slab residential: the EFF rate is generally 78% to 85%, and the share coefficient is 15% to 22%.

High-rise terrace residential: the EFF is generally 75% to 78%, and the share coefficient is 22% to 25%.

If the EFF is too high, the area of the relative public part will be less, then it may affect the width of the stairs, the comfort of the lobby, the number of elevators, etc., so the EFF of the real estate is not as high as possible, and there is also a degree.

1. The multi-storey (without elevator) room rate is higher, more than 85%-90%, the middle and high-rise room rate is generally about 80%, and the high-rise is generally about 75-83% due to the large area of the elevator room and fire escape.

2. The housing yield of commercial residential buildings is relatively low, generally around 70%.

3. Residential buildings can be divided into low-rise floors on 1-3 floors, multi-storey floors on 4-6 floors, medium and high-rise floors on 7-9 floors, and high-rise buildings on 10 floors or more.

What are the factors that affect the EFF?

The most direct reason for the EFF is the size of the shared area. The shared area is divided into two parts, one of which is the construction area of elevator shafts, stairwells, substation rooms, garbage chutes and other common and management buildings that serve the entire building; The second is the dividing wall between the set (unit) and the public building space, and half of the horizontal projection area of the wall of the external wall (including the gable). In detail, it is mainly reflected in the following aspects:

1. Housing structure (several ladders and several households): For example, the public area to be apportioned by one ladder and multiple households may be almost the same as that of one ladder and two households, but the number of households increases, and the total construction area in the suite increases, and the public area that each household needs to share will be reduced accordingly.

2. The shape of the curved front plate of the building: in general, the high-rise housing rate is the lowest, the small high-level one, and the multi-storey one's housing efficiency is higher.

3. Property type: In general, the flat type has the highest EFF, followed by the stacked type, and the point type is lower.

4. The size of the public activity area: Generally speaking, most of the properties in high-quality communities are built with tall lobbies, spacious elevators, and indoor garages, which obviously occupy a large amount of shared area, so the housing rate is relatively low.

The <> high-rise EFF is between 75-85% and the low-rise is between 80%-90%. EFF is a formula that calculates the actual usable area of a house. This involves the balance of public construction area and private construction area, the housing rate can neither be too high nor too low, too high that is, the housing rate is high, many people think that such a house has a lot of benefits, in fact, the public construction and sale of liquid building area is also an indispensable trace of daily life, the public area is too small, easy to compress the public space, resulting in a lot of inconvenient situations.

However, if the housing rate is too low, it will also affect the interests of homeowners, in short, it is necessary for buyers to weigh and grasp.

The occupancy rate for high-rise residential buildings is 75 to 85 percent. EFF refers to the method of calculating the actual usable area of a house. This requires finding a balance between public and private buildings, i.e. the housing availability of residential buildings cannot be too high or too low, otherwise there will be a high housing efficiency.

1. The common construction area includes elevator shafts, stairwells, garbage chutes, substation rooms, equipment rooms, public halls and aisles, basements, guard rooms on duty, and other public and office spaces used for the entire building construction; The second is the horizontal projection area of the separation wall and the exterior wall between public buildings. The floor area of the unit purchased by the purchaser of commercial residential buildings and the shared public floor area are the sales area of commercial residential buildings.

2. The general unit of measurement calculates the area of the public foundation of the whole building, divides it by the floor area, and then multiplies it by the internal area of each dwelling to obtain the shared area of a single dwelling. As for the actual occupancy rate of the dwelling, it is not up to the developer to decide. This also involves the Ministry of Land and Resources and other departments.

3. There is no relationship between the shared ratio and the common floor area mentioned by the real estate consultant, but only the measurement of the whole building by the unit of measurement, not a building, which also explains why there is a certain distance between each unit. But now, the share of public interest has fallen by 3 per cent, and it is protected by law. As a result, some developers use public space for arbitrage.

1. The housing rate of small high-rise buildings 1) Houses are divided into three categories: multi-storey, small high-rise, and high-rise. In general, people with multiple floors will have more opportunities, followed by small high-rises, and taller people, there will be fewer opportunities.

When buying a house, people who buy a house look at the appearance rate of the house. EFF is related to how comfortable we are. Normally, the higher the occupancy rate of the house, the smaller the common area will be, making residents feel inconvenient, and the rental rate of 80% is a more reasonable ratio and more economical.

2. The EFF of small high-rise residential buildings is also an important criterion, and its EFF has a great impact on the comfort of the residence. The occupancy rate of small high-rise residential buildings is the ratio of unit area to sales area, which does not mean that you must buy what you buy.

The above is what I told you about the general EFF, I hope it can help you, if you don't know much about it, you can refer to the above content to learn.

The level of housing acquisition rate is an important indicator that buyers should refer to when buying a house, and it is closely related to the vital interests of buyers. If the housing efficiency rate is too low, the area that residents can actually use will be less, and it will not be affordable for users. Below, I will take you to understand how to calculate the formula of the EFF and what the EFF is in general.

How to calculate the formula of the room rate.

1. Housing rate: (the construction area of the house - the shared area) The construction area of the house. Let's say:

If the existing house has a construction area of 100 square meters and a shared area of 20 square meters, the housing efficiency of the house is: (100-20) 100 is equal to 80%. The higher the EFF, the higher the practical utilization rate of your house, and the larger the number of loose words, the better.

2. The accounting formula of the pooling coefficient is: the pooling coefficient is equal to the construction area of the pooled area. Then, multiply the construction area of each set (unit) by the sharing coefficient to obtain the shared construction area that should be reasonably shared by the buyer.

That is, the common construction area shared by each household is equal to the construction area in the common sharing coefficient multiplied by the set.

What is the average EFF?

In general, the EFF of multi-storey buildings is 88%, and that of high-rise buildings is 72%. The shared area is closely related to the EFF. As we all know, the so-called shared area is the public area that everyone pays for together, and the larger the shared area, the smaller the actual area used by the house.

The pooling coefficient is the ratio of the pooled area to the floor area in the suite, and the EFF = 1 - pooling factor.

The EFF rate is more suitable at about 80%, and the common part is spacious and magnificent, and the shared area is not too much, which is more affordable. Due to the requirements of the construction design code, many supporting facilities are required, according to the regulations: 12 floors - 18 floors, pure residential function, no less than two elevators, one of which should have the function of a fire elevator; From 19 floors to 33 floors, the total number of households served is 150 to 270, and the number of elevators is at least 3, one of which should have the function of a fire elevator.

How to calculate the formula for selling potatoes and how much is the average EFF, here is the introduction for you. The average value of the EFF is usually known from the sales mouth, and it is difficult to see it from advertisements and brochures. However, when the developer's project is opened, the sales control table will be displayed, and the data provided by the table includes unit price, orientation, house type, floor, floor area and area of the suite, which you can calculate by yourself.