Technically, commercial appraisals don’t expire. Even so, a commercial appraisal is usually honored for 90 days up to 6 months. A commercial real estate property appraisal could only be accepted for as much as 30 times in a very unstable market. One example is, when using the income comp tactic. https://notebook.zohopublic.com/public/notes/i3r0i49382a4b13ee4441a72a4ef62ff61139