I'm assuming by your zip code that you are in NYC.
I don't think you should sign anything until you talk to an attorney who knows about condo conversions. From my quick research, it looks like you have to be allowed to stay as a tenant, and the new owner of the condo becomes your landlord - whether he likes it or not. Whether or not you are in a rent controlled unit.
So don't sign anything until you talk to a lawyer who knows about these laws!
On the last couple of pages of the handbook below are attorney resources.
Here's the Attorney General handbook on condo conversions. Also says you can contact them with questions:
http://www.ag.ny.gov/sites/default/f...20Handbook.pdf
Office of the Attorney General
Real Estate Financing Bureau
120 Broadway, 23rd floorNew York, N.Y. 10271
212-416-8121
Real Estate Finance Bureau | Eric T. Schneiderman
I didn't read the whole thing, but did see this on page 20.
Non-Eviction Plans
At least 15% of all units in the building must be sold to bona fide tenants or purchasers who intend that they or a family member will live in the apartment. Non-purchasing tenants may not be evicted, although their apartments or shares corresponding to their apartments may be sold. Tenants whose apartments are subject to ETPA or rent control
may continue in occupancy as ETPA or rent-controlled tenants, paying rent to the purchaser of the apartment. Tenants whose apartments are not rent regulated may remain in their apartments, and they may
not be charged unconscionable rents.
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Note there is a listing of which towns, etc., have adopted the Coop and Condominium Conversion Act in the Appendix of the handbook. Like I said, I didn't read the whole thing, but enough to know you shouldn't sign anything until you know the law.
At this point, you are a month to month tenant. To terminate your tenancy, they would have to give you appropriate notice. So, they won't be just kicking you out. You have time to get some legal help.
Without reading it all, though, it looks to me like you can stay, and they have to charge you a reasonable rent. I would highly suggest that you don't stop paying rent. I think that could get you kicked out.
Good luck!