In response, I had a plumber and a water restoration company come to assess the situation.The restoration company cut into the drywall, and the plumber thoroughly inspected all the pipes, performed a leak test, and conducted a pressure test.

Quote from @Elliot Rosen: Use a licensed and bonded foundation company and keep the invoices, and disclose it to the buyer.

Generally, the builder will also own the mortgage company to recover some of what they give up in credits via the profit on the loan. 

Quote from @Dee R White: I'm out of debt, don't really plan on using my card much except for emergencies but the recovering spendthrift and the riskier investor sides of me - are curious if I should call the company back and ask for them to raise it back as it might affect my credit score. 

Which property management company did you work for?

Are you looking specifically for insurance placement companies or corporate housing or a mix?

Water leaks, problems under the trailer ie insulation falling, a tub cracking, a new roof, frozen/cracked pipes (usually in January- and plumbing companies simply will not respond to mobile homes), rotting siding, bad exterior doors etc. 

Any suggestions or names of companies that can do this type of job are greatly appreciated. 

Regarding calculating ARV, we also own a mortgage company and a real estate company, we we do a CMA using the MLS.

I use Advanta IRA and have been happy with the level of service that they provide.