Zoning and land use
Zoning lot mergers
A zoning lot merger joins separate tax lots into one zoning lot so floor area can move between them. It is recorded, and it binds every future owner.
What is a zoning lot merger and what does it do to the property?
Quick Answer
How much may be built
Who does this land on?
Owners of adjoining lots, developers assembling a site, and any buyer of a lot that has ever been part of a merger.
What governs it?
- The zoning lot definition in the Zoning Resolution, which permits contiguous tax lots to be treated as one lot for bulk purposes
- The declaration of zoning lot restrictions and the zoning lot development agreement, which are the recorded instruments that create it
- The requirement that every party in interest consent or waive, including mortgagees and certain lessees
- The recording statutes, because the merger binds successors only through the record
- The Department of Buildings zoning lot certification, which is how the merger is recognized on a job filing
How does the process run?
- Confirm the lots are contiguous; a zoning lot can straddle a district boundary, but then Zoning Resolution Article VII Chapter 7 decides how much floor area may move across the line, so the allocation is a zoning analysis rather than a simple sum
- Calculate the floor area available across the combined lot and decide how it is allocated between the parties
- Draft the declaration and the zoning lot development agreement, including the allocation, light and air easements and maintenance covenants
- Obtain waivers and subordinations from every mortgagee and party in interest
- Record the instruments in ACRIS against every affected lot
- File the zoning lot certification at the Department of Buildings with the recorded documents attached
- Keep the recorded set with the property file, because the next filing and the next sale will both need it
Where does it bite in a transaction?
- A townhouse is bought for its unused floor area that a recorded declaration assigned to the tower next door
- A merged lot is subdivided in a contract without the release the declaration requires
- A lender discovers the collateral is one tax lot inside a zoning lot whose development rights sit elsewhere
- A survey shows the tax lot while the zoning analysis needs the zoning lot, and the two are never reconciled
Does a merger change the tax lots?
No. The tax lots stay separate for assessment, billing and conveyancing. The merger is a zoning construct: it changes how the Department of Buildings measures bulk, not how the Department of Finance bills. That mismatch is why a merger is easy to miss when only the tax map is consulted.
Can a zoning lot merger be undone?
Only in the way the recorded instruments allow, and only with the consent of the parties in interest at that time. A declaration typically runs with the land and survives a sale, so unwinding one is a negotiation with whoever now holds the benefited lot and the mortgagees behind them.
How do you find out whether a lot is merged?
Search ACRIS against every tax lot in the assemblage for declarations of zoning lot restrictions, zoning lot development agreements, waivers and easements, then pull the Department of Buildings property profile and prior zoning lot certifications. Neither source alone is complete, which is why both are run.
What else should you read before you file or sign?
In the glossary
- Zoning lot certificateA recorded declaration combining tax lots into one zoning lot for development purposes. Waivers and consents from affected owners and lienholders a...
- ACRISNew York City's public index of recorded property documents for Manhattan, Brooklyn, Queens and the Bronx. Deeds, mortgages, satisfactions, easemen...
- EasementA right to use part of another owner's property for a specific purpose. Easements appear as exceptions on a title report and generally survive a sa...
- RecordingFiling an instrument with the register or county clerk so it becomes part of the public record. Recording establishes priority against later purcha...
- EncumbranceAny interest in the property held by someone other than the owner, whether monetary such as a mortgage or lien, or non-monetary such as an easement...
- SurveyA surveyor's drawing of the parcel, its improvements and any encroachments. Lenders on houses and townhouses generally require a current one or a s...
Questions this raises
- What gets recorded after a NYC closing?Deed, mortgage, assignments and satisfactions record through ACRIS with the City Register, along with transfer tax returns. What is filed instead o...
- What happens if the title search finds a problem before closing?Schedule B-I requirements are the punch list, not a dead deal. How New York closings clear old liens, missing satisfactions and name hits before th...
Zoning and land use
- Air rights and transferable development rightsAir rights move three ways in New York City: a zoning lot merger, a landmark transfer, or a special district mechanism. Each is a recorded real est...
- Floor area ratio and how much you can buildFloor area ratio multiplied by lot area sets the buildable floor area. Here is how it is calculated, what is excluded, and why the zoning lot is th...
- Zoning due diligence before you signSix records answer almost every zoning question on a New York City property, and all six can be pulled before the contract rather than after the de...
- R, C and M zoning districts in New York CityEvery NYC lot sits in a residential, commercial or manufacturing district, often with an overlay or a special district on top of it. Here is how to...
- What a zoning problem does to a pending closingA zoning problem is usually not a title defect, which is exactly why it is dangerous. It reaches the deal through the contract, the lender and the ...
The statute itself
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Legal Disclaimer: This page is general information about New York practice. It is not legal advice, it does not account for the terms of any particular contract, building or transaction, and reading it does not create an attorney-client relationship. This is attorney advertising. Prior results do not guarantee similar outcomes.