Like any service, appraisal fees are directly related to the amount of time the appraiser spends in providing the service.

An appraisal for an average home usually costs $350, which is usually paid by the buyer in a mortgage transaction or a homeowner in a non-lender transaction.

The amount of development time may vary from one assignment to another even though the reports for different assignments may look similar. While an appraisal assignment involves both the development and reporting of assignment results, the client sees only the appraisal report.

The duration of a residential appraisal can vary depending on several factors, including the complexity of the property and the availability of necessary information. Generally, a standard residential appraisal can take anywhere from a few days to a couple of weeks. However, more complex properties or unique circumstances may require additional time. It's always best to consult with the appraiser directly to get a more accurate estimate based on your specific situation.

The validity or "good" period of an appraisal depends on various factors such as the lender's requirements and market conditions.

Typically, residential appraisals are considered valid for a period of three to six months.

However, it's important to note that lenders may have their own guidelines and may require a more recent appraisal if the original one becomes outdated or if there have been significant changes in the market or the property itself.

It's advisable to consult with your lender or appraiser to determine the specific validity period for your appraisal in accordance with your circumstances.