I imagine I need a team consisting of a good contractor and environmental engineer at the very least but any additional insight would be greatly appreciated.Thank you.

This unit has it all with high ceilings, large open modern footprint, and first floor master.

So any QI with a national footprint and good demonstrated experience can help you out.

Not likely if the outside walls and "foot print" of the home remain unchanged.   

My first 1031 purchase, a ten-unit, was found to have multiple environmental court and city planning violations because the builder from 30 years ago had not followed the rules. 

If US bank has a footprint where you are, it shouldn’t be a problem.

At that point you're looking at effort spent for $12 a month.For every 100,000 borrowed:5 %  - 25 yr - Annual Payment - $ 7015 - Monthly - $ 5844 % - 25 yr - Annual Payment - $ 6334  - Monthly - $ 527Savings of $681 Annually or $56.75 Monthlyor 5 % - 20 yr - Annual Payment - $ 7919 - Monthly - $ 6604 % - 20 yr - Annual Payment - $ 7272 - Monthly - $ 606Savings of $647 Annually or $54 MonthlyYes refinancing can make a huge difference, but with appraisals, closing costs, environmentals, you can easily look as spending 5k-8k on a commercial or 2k on a house. 

DWQ, Army Corp or any other environmental requirements or permits. 

Problem is my area isn’t really known for multi family units and I’m further restricted by needing to be in my son’s middle school footprint.

One reason some lenders don't want to take a deed in lieu, is environmental risk.