In essence, lender guidelines force appraisers
to put a fair market value on a home based upon comparable sales in the area where the home is located, as the home must be bracketed according to size and value. For example, there is no set amount associated with a great view, pool, spa, bathroom upgrades, etc. If a homeowner installs a custom pool that cost them $30,000, and the local marketplace supports the value of a pool at $15,000, that item will be bracketed as [$15,000] on the appraisal.

Upgrades can usually be expressed at close to full value in newer homes since they required investing additional money into the cost of building the home (depending on the area and what the market supports in the value). On the other hand, the amount invested in upgrading or remodeling an older home is rarely reflected in full in the final appraisal. The reason is the home had value in its original condition, and again, the value of the upgrades must be supported by comparable examples within the same marketplace.

These comparisons must be drawn from current market activity within the last three-six months. Some lenders may want to look at both closed and pending sales to see if there is any room for negotiation. This is a safeguard to prevent appraisers from over-valuing the home in question. It is further stated in the guidelines that appraisers can only place a value on homes that have closed.