To renovate basement or not for appraisal?

[Adam Aero]

I want my appraisal to be 275k. Should I talk to an appraiser before the bank gets an appraisal? Doing a cash out refinance. 

Because of it's not going to appraise that high, I could finish the basement fairly easily. (And then it should definitely appraise that high.) 

Thoughts? Specifically I could add a French door to a room to make it a bedroom. The basement can be made into two additional bedrooms. I would finish 4/6 rooms down there with proper egress and optional ventilation. It's a huge house with tall basement ceilings.

[Sofia Komrskova]

If you can talk to a local appraiser before the refinance then ask them  what implications on appraisal price a finished basement would have. If it's net positive, then make sure to do it up to code, etc so the finished square space can count. If it won't have any effect then don't do it.