Under national standards, when can a pool house be included in total square footage?

In the context of appraisal standards, a pool house can be included in the total square footage of a property if it is considered a permanent and integral part of the main dwelling. This is generally the case when the pool house is physically connected to the main home via a hallway or stairway. Such a connection establishes that the pool house serves as an extension of the primary living area rather than as a separate entity.

This inclusion is significant because appraisers often assess the usability and functionality of a property when determining its value—having features that are directly accessible from the main living space can enhance the property's appeal and utility.

The other criteria mentioned, such as size or cost, do not necessarily indicate whether the pool house should be counted as part of the livable square footage. Size limitations might pertain to local or state building codes rather than appraisal standards, and financial investment does not dictate the structural integration of a unit with the main property. Thus, the attachment by a corridor or stairway is the key factor for inclusion in total square footage according to national standards.