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.

Definitely get the structural engineer to look at the joists & support beams to see what's up with the uneven floors.

In addition to those above-referenced issues related to conversions, the additional unit(s) would require a parking space and enough lot area/gross floor area to meet the requirements in 9-703. 

I have a DADU over my detached garage that my daughter used to live in, but now she is out on her own so if I want to do a more major renovation (need to refinish the floors and maybe open up the kitchen more), I can move into the DADU as well.

@Clare Pitcher we do 12+ month leases to avoid vacancies Nov-Feb.If we take over an occupied property, evict or have tenancy-abandon a property, we first let the owner know finding a tenant will take longer than "normal".This opens up owners to understanding they may need to:1) Offer 3D tour and floor plans to stand out2) Price more aggressively or be prepared for aggressive price reductions3) Offer MoveIn Specials:- NOTE: we do NOT recommend offering a month of free rent that can be used at MoveIn.

Or just avoid ST booking platforms.2) Converting the roof into a terrace (apt. on the top floor).

Renovated: Added granite, high end finishes and fixures, landscaping, new flooring and painting throughout.

Generally:Minimum size: Most jurisdictions consider a minimum of 70 square feet of floor space.

I just had 2100 sf of luxury vinyl flooring installed.

We focus on CapEX before beauty. as a realtor we understand selling or renting homes you have to make the home function, Roofing, windows, electrical and plumbing. after we address these we focused on beautify making sure the upgrades match the area and is forward thinking with color scheme, flooring, and flow.