# how do I measure sq feet of home?

April 20 2011 - Logan Square
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#### Answers (4)

##### Best Answer
• Contributions:1112
There are many different ways to do it, so be careful however you do it is not misinterpreted.
April 20 2011
It is a very strange concept, because, you only measure "livable space", which means it at least needs to be heated.  Enclosed porches don't count.  Neither do basements.  And ceiling heights need to be a minimum of 7ft 6in to meet the requirements of Livable space according to the uniform building code, so some attic conversion space may count, but others may not.  And if a ceiling slopes, then an average is used, so some space with lower ceiling height may count, but still maybe not all of it.

And some areas with double height ceiling may count twice, such as stairways, even though no additional "floor", but high vaulted ceiling living rooms only count once.

And as mentioned, even though for commercial buildings, you measure from the inside of the walls, for residential, you measure from the exterior of the walls, simply since appraisers and assessors often don't have access to the interior of a residence.

So, it is very easy to have a huge discrepancy on the numbers for any given home.  There also are round-off errors.  Some round to the nearest 1/2 ft.  Others round to the nearest inch.  Others round to the nearest 1/4".  Others round to the nearest 1/16 of an inch.

The correct thing to do is give the numbers in the county records.  And for the benefit of a potential buyer, to list the (interior) dimensions of each room.  The buyer will know how it was rounded by the notation used.

Although walls take up floor space and are counted in the building square footage, they are not "usable" space, thus confusing most reasonable people.
April 21 2011
• Contributions:1146
Measure outside wall to outside wall from the outside of the house. While this is not completely accurate because it does not take into account interior walls and both inefficient and efficient floor plans that is how to do an apples to apples comparison.
April 20 2011
• Contributions:777

That can be a tough one, depending on the home. Is it a single story home?

Rather than explain it here (probably not very well) here is a link from The Learning Channel  that describes it pretty well...

http://tlc.howstuffworks.com/home/measure-square-footage.htm
April 20 2011

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• Asked by japutnam64
• In Refinance
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