Is there a specific document that I will need?

The due diligence period and having a good home inspection are your friends in a situation like that. 

As many have mentioned, most fix-and-flip loans allow lenders to fund up to 90% of the purchase price and 100% of the rehab costs, but they typically won’t exceed 75% of the ARV.However, If you're not including a rehab budget, lenders often cap the loan at around 70% of the purchase price, which might explain the situation you're encountering.It’s generally more advantageous to include a portion of the rehab budget in the loan.

I had to hold back my chuckle, she didn't recognize the irony of the situation.  

If accepting the no parking MTR situation, then the MTR really needs to be pet-friendly (bonus if fenced-in yard) and have laundry (especially in-unit) to make up for the elimination of a key amenity.

A property in Haysville for example would be SW, but could also be filtered on "Haysville" specifically. 

That's what I would do in your situation.

I also work with a team that helps cash buyers execute the BRRRR strategy or build rental portfolios, making it as seamless as possible for out-of-state investors.Best of luck, and let me know if you have any specific questions!

I purchased sub2 a handful of times for fix-and-flip types of situations, where I was in and out of the deal in 3 months.  

Specifically the Manchester, Concord, Nashua areas which are right over the border of Massachusetts.