Is contract expiration an acceptable reason for buyer to rescind

[Dominique Pradel-Lewis]

I am purchasing a SFR from an auction site with 30 day closing (stipulated in the contract). The town asked that an occupancy certificate be obtained requiring an inspection. It wasn't done within the 30 days so there was 15 day extension. I just found out the item is still pending. At the end of this contract extention can I refuse to renew and get my good faith deposit?