While they wouldn't see an open permit, the would possibly see 2 beds, 1 bath on the town card and second bath downstairs which would then be non-compliant and have to be removed and capped.

I'm fine if this is something I can do on my own, but I also want to ensure that I'm fully compliant because......IRS.

My view is there is risk in unpermitted work including getting caught and having to come compliant and/or not being able to rebuild if something happens.  

Given the flexibility of our jobs, which offers nationwide opportunities, we have the privilege of choosing our permanent address anywhere in the country while remaining compliant with IRS regulations regarding tax homes.Initially, our aim was to purchase property in the Portsmouth, Durham, or Salem areas of New Hampshire.

If the drawings were code compliant, then it's on the Contractor to follow them explicitly OR contact the Architect if changes are necessary for the constructibility.

Probably not if it is an OO real estate...you still have to qualify the loan to be federally compliant. 

It's essential to work closely with experienced professionals, such as real estate agents, attorneys, and escrow agents, to ensure a smooth and legally compliant transaction from start to finish.

.), and create plans for a compliant renovation.The 2019 pilot program you mentioned wasn't permanent, and the high costs associated with it discouraged participation.

They lie and say they are "TCPA compliant" but they are not. 

No matter which side of the lending transaction you are on, you will want to consult with a local RE attorney and get docs drafted up by a professional to make sure you stay legally compliant and have adequate protections both as borrower and lender.