As a full service design-build firm, we are capable of so much more (full custom new builds and large scale renovations and additions). 

Everybody I have called said no except for one company that only does portfolios with established customers

If not we replace and charge the customer for time and materials.  

I will be moving to the Northern Virginia/DC area in a couple of months and would love to meet investors from the area as well as a real estate agent, insurance broker and/or attorney familiar with LTR/STRs.

@DeAndre MasonIf you are only 2 points off being able to accomplish your financing, mortgage brokers should have resources to refer you to be able to boost your credit score.  

Is it possible to compare what the brokers I have consulted with offer.Or is that unethical and I should stick to the first one who send me his details also for the sake of not affecting my credit score. 

You won't be scaring away the seller, this is a completely normal thing to request and your broker should be the one prodding the seller's side for this info up front (especially if the seller's side hasn't provided it already with the marketing material at the very least). 

Yes, Real Estate broker in the UK, and lender who specialized in buy-to-let (investor style) loans

Yes, Real Estate broker in the UK, and lender who specialized in buy-to-let (investor style) loans

Send emails, call brokers, check social media and see who the bigger players are.