Home Innovation Research Labs (formerly the NAHB Research Center) has authored hundreds of valuable resources for building professionals - books, training materials, design and construction guides, research reports, videos, product directories, and more.
Below is a sample of the resources we have available for purchase — for a complete listing, call 800.638.8556.
Square Footage - Method for Calculating: ANSI Z765-2013
This voluntary standard for measuring square footage in single-family detached and attached homes, developed by an American National Standards Committee, is the first national standard to reconcile differences in current methods for determining square footage. The standard involves the calculation and reporting of above-grade square footage and below-grade square footage in single-family houses. It is not applicable to apartment/multifamily buildings and does not cover room dimensions.
Published in 2013 | 16 pages
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