So your escrow closer is your best go to for that.But the mechanics of the 1031 will be identical in all states.

I am looking at buying a townhouse in NYC that is currently designated as an SRO with two rent stabilised tenants living on one of the floors and the other floor unit is vacant.

If accurate then the SEC rules are designed to prevent unsophisticated investors from getting into this exact situation.

If you found yourself in a situation where your family's future was designed around an investment, how would you feel? 

You probably don't need to change your interior design or furniture, and you already have the pots/pans/dishes and amenities needed to drop in a student or a traveling tradesman.

Each jurisdiction has their own Zoning designations and restrictions, and they can Vary significantly.

BiggerPockets is full of resources designed to help you along your journey, whether you are just getting started or a seasoned investor.

Joinder of Parties due by 5/10/2024, Amended Pleadings due by 11/12/2024, Expert Witness Disclosure/Reports under FRCP 26(a)(2) due by 11/12/2024, Discovery Motions due by 12/11/2024, Discovery completed by 1/10/2025, Dispositive motions due by 2/10/2025, Attorney settlement conference to be held by 4/10/2025, Motions in Limine due by 4/30/2025, Deposition Designations due by 5/19/2025, Pretrial Order due by 5/19/2025, Trial briefs to be submitted by 5/27/2025, Pretrial Conference set for 6/2/2025 at 01:30 PM in Courtroom 16106 before Judge Jamal N Whitehead.

He can just put a mechanic's lien on your property and he will get paid when you sell.

There're various financial plans designed to help with college financing, and some of them come with tax benefits.