"the typical home warranty costs $450 annually, and only 25% of premiums are paid to homeowners.

But you have closing costs for Refi, and sale, but in sale you get all your equity back out. 

Low cost, possibly yes, but also possibly very time consuming and that has a cost.  

They cost slightly more than the normal permitting process, but I usually have permits in hand in a week or less.My GC is has some experience on Coronado, if you would like I can connect you, so you can get his opinion as well.

In doing so, bear in mind that the cost and admin of a corporation is higher and that the tax treatment is different:1.

Quote from @Dylan Webb: Have you talked to a lender to see what it would cost you?

Any tips on balancing renovation costs with tenant expectations when preparing a property for midterm stays?

Those costs are a lot higher than you might expect.

Some may have very small thresholds for repair holdbacks on purchases but this is typically limited to make ready items not to exceed $2,500 in costs to cure.

He's changing the terms of the agreement, and you can choose to accept it or reject it.I don't think it's fair to pass this cost onto the tenant just because you are unwilling to stand up to the contractor.