Low BRRR Appraisal - How to handle?

[Luke Grieshop]

Hey everyone! I'm in the refinancing process for a BRRRR deal I just did, and the appraisal came in much lower than my partner & I had anticipated. We felt we had 2 strong comps to justify pricing, which sold in the last few months. The appraiser used the sales comp approach with 3 properties that have no work done to them at all. Curious if anybody has suggestions on how to handle this? Is there a way to appeal the appraisal or something along those lines?