An appraisal will determine your home’s lendable value, so the more up-to-date and well-maintained a home is, the higher its value will be. On the flip side, according to Investopedia, the factors below may lower the home appraisal:
Deferred maintenance
Dated or undesirable finishes
Not being up front about needed repairs
Comparable properties that are “outliers” (e.g., sold to relatives, under duress, or a foreclosure)
Market conditions
Appraiser experience