and is it legal if LO submit one file to 2 different lenders at the same time?

I think the legal term might be "undue enrichment".

I know it will be an issue if sell, but what if I never sell and just keep it as a rental? 

Rehab took longer than expected due to contractor issues but we were able to find a new contractor, complete the work and get the property sold.

This will give you an idea of the average sale price and what you can expect to get for the property if you make the necessary repairs and upgrades.Property History: Look into the property's history, including any previous owners, liens, or legal issues.

@Kim Durst Potentially you could take the $10k, then have another $10k (or whatever amount you feel covers your cost if there are further issues) held in escrow.

In MHP's they are regulated like cars rather than real estate, but the renovation is mostly the same (sans foundation issues, and structural issues if leave the outside walls intact).

Is the wife legally on title?

Their personal tax prep is around $500 for a 1040 with some stock issues. 

You need licensed contractors and permits for electrical, plumbing and for major things, someone who knows how to put a roof on and address foundation issues.