Appraisals can help buyers avoid overpaying for homes, but a seller may feel that a low appraisal is inaccurate and be reluctant to drop the price.
If a bad appraisal is standing between you and your home purchase or sale, consider getting a second opinion by bringing in another appraiser. Appraisers can make mistakes or have imperfect information, and appraisals can be affected by bias.
You can also try presenting a factual case for a higher valuation to the original appraiser. A persuasive case can result in a revised evaluation.