Normal stick built construction, you frame up the walls, stand them up, put OSB (oriented strand board), set the trusses, OSB the roof.

I would prioritize finding an accountant who specializes in real estate taxation over one that is local.There are 20+ accountants on this message board who specialize in real estate taxation.

That's honestly the guy I see keep popping up all over these boards that's making me think who I should be reaching out to instead. 

The Co-op board holds the decision as to who can buy.

If your answer is: "some turn key operator told me so," you need to go back to the drawing board. 

I think one of the biggest problems I saw in folks' complaints, while working for an AMC, was undue influence via threats of complaints to the Appraisal board for no good reason or jamming objectively bad comparables down their throats and demanding they are used.

It actually boxes you into the state regulated industry rules and regulations as well as the continued education requirements and board of realtor dues and fees.

Speaking of a small world,  It's nice to see a familiar face on board! 

A bathroom this size is very easy to do.Materials will be. 2x4’s and plywood Concrete board or green boardBathtubBathtub faucetBathtub p-trap plumbing assembly VanityVanity topVanity faucetVanity faucet supply linesVanity p-trapToiletAdditional toilet wax ringToilet supply lineDrywallDrywall mud and tapePaintThe above are the basics that every bathroom rehab will need.

If you were to find out that the property sold with an inferior offer, you could lodge a complaint with the state regulatory board.