living area

How do appraisers usually value pool houses. If it is climate controlled living type space, is it similar to living area in the home? Trying to determine how to complete a rehab for the best value. Hope this is the right place to ask. Thank you.

Doing an appraisal on a purchase in Southern California. Assessor lists the building area at 6727 sqft - so of course that figure spreads through the MLS and title, etc. Agent listed the house using that figure as the sqft. Here's the issue - the assessor is including a large 1500sqft garage...