Lake Arrowhead - Parking Deck Value Add Question

[Michael Csurics]

Hi All, Quick Q and I hope I'm putting this in the right topic. We have a property up in Lake Arrowhead and are doing the numbers on our rehab. One thing we are having a difficult time with right now is figuring out the impact to the ARV on adding a parking deck.

Current parking is 2 car tight tandem on a downsloped driveway. With a deck we are hoping to get 2 or maybe 3 side by side. We are also considering a covered solution if budget permits. 

If anyone has any insight on a spitball for how much this would add to the appraisal (and/or rec's on good parking deck designers/installers). I'd greatly appreciate it.