This is where your agent should come in and guide you through all these items and confirm a lot of stuff that was asked about and they should be able to lead you to getting money back or a successful reduction in price.  

The owner is willing to carry the property while I do the repairs, when we sell he would then collect his $250k( the original value we determined I would pay) plus a small percentage of profit (yet to be determined). 

But I have about $20,000 in leftover carry-forward deductions.

We are using one of the same service providers for the maintenance of the cabin and a few items were removed after COE, which by the letter of the law, is theft.

In order mitigate [1] the irritation and known adverse health effects of secondhand smoke; [2] the increased maintenance, cleaning, and redecorating costs from smoking; [3] the increased risk of fire from smoking; and [4] the higher costs of fire insurance for a building which allows smoking.B) Definitions. [1] “Smoking” means inhaling, exhaling, burning, or carrying any lighted or heated cigar, cigarette, or pipe, or any other lighted or heated tobacco or plant product intended for inhalation, including hookahs and marijuana, whether natural or synthetic, in any manner or in any form.

Every contract can allocate these items differently.I would also factor in property tax allocation based upon July - June tax year.

Counters: $4,000 Contingency: $15,000Total: $150,000Although you have a bulk of the items covered, you are also missing several items that could add up to thousands of dollars of work:ExteriorsLandscaping?

What is stopping you from asking seller to carry back a note?

@Carrie Aldridge - Interesting question, I'll be following this as well.Clearly, what you're missing out on is money now - since rents won't be at FMV. 

Return the security deposit portion with an itemized statement in accordance with local laws.