Zoning and land use
Legal non-conforming use and grandfathering
A use lawful when it started can continue after the zoning changes, but the protection is narrow and it can be lost. Here is what it covers and how it ends.
What is a legal non-conforming use and when is it lost?
Quick Answer
How the rules are read
Who does this land on?
Owners of older mixed-use and industrial buildings, buyers relying on an existing use that the current district would not permit, and lenders underwriting income from that use.
What governs it?
- The non-conforming use provisions of the Zoning Resolution, which set what may continue, what may change and what terminates
- The discontinuance rule, under which a non-conforming use abandoned for a continuous statutory period may not be resumed
- The rules limiting enlargement of a non-conforming use and a change from one non-conforming use to another
- The separate rules for non-complying bulk, which is a building that exceeds current floor area, height or yard requirements rather than a use
- The Department of Buildings, which decides whether the evidence establishes the earlier lawful use
How does the process run?
- Establish that the use was lawful when it began, which is an evidentiary exercise rather than an argument
- Assemble the proof: prior certificates of occupancy, a letter of no objection, old job filings, tax photographs, city directories, leases and utility records
- Establish continuity, because a gap in the record invites the argument that the use was discontinued
- Ask the Department of Buildings to recognize the status, usually through a determination or a letter of no objection
- Where the Department declines and the determination is final, the route is an appeal to the Board of Standards and Appeals
- Once recognized, keep the use continuous and keep the file, because the next owner will have to prove the same thing
Where does it bite in a transaction?
- A contract of sale describes an income-producing use the current district does not permit and the buyer cannot document its history
- A commercial tenancy lapses during a long vacancy and the discontinuance clock quietly runs
- A fire or a gut renovation exceeds the threshold that would let the use be rebuilt
- A lender declines to underwrite rent from a use the borrower cannot show is lawful
Is a non-conforming use the same as a non-complying building?
No. A non-conforming use is about what happens inside the building; a non-complying building is about the building itself exceeding current floor area, height, setback or yard rules. A property can be one, the other, or both, and the rules that govern enlargement and reconstruction are different for each.
How long a vacancy ends the protection?
The Zoning Resolution sets a continuous discontinuance period, and once it runs the use may not be resumed even if the building is unchanged. Seasonal closures and short gaps between tenants are ordinarily not discontinuance, but a long dark period with no marketing and no filings is exactly what a discontinuance argument is built from.
What proof does the Department of Buildings accept?
Contemporaneous City records carry the most weight: an old certificate of occupancy, a letter of no objection, a filed alteration application, a tax photograph showing the storefront. Affidavits help but rarely carry a determination on their own, which is why the record search happens before the offer rather than after the contract.
Does the protection transfer to a buyer?
The status runs with the land rather than with the owner, so a lawful non-conforming use survives a sale. What does not survive is proof you cannot produce, so the practical answer is that the status transfers only as well as the file documenting it does.
What else should you read before you file or sign?
In the glossary
- Letter of No ObjectionA DOB letter confirming the lawful use of a building constructed before Certificates of Occupancy were required. It stands in for a C of O on many ...
- Certificate of Occupancy (C of O)The Department of Buildings document that fixes a building's legal use and occupancy. Lenders and title companies read it to confirm the property c...
- Chain of titleThe sequence of recorded conveyances of a property, from an earlier known owner to the present one. Gaps and defective links in the chain are what ...
- Violation (cited against the premises)An agency record that a condition at a property does not comply with a code or rule. It attaches to the premises and follows the property through a...
Questions this raises
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- What is curative title work?Curative work clears Schedule B-I before closing: payoffs, missing satisfactions, heirship affidavits, ACRIS indexing fixes and escrow holdbacks in...
Zoning and land use
- Zoning use groupsThe Zoning Resolution sorts every activity into a use group, and each district permits only some of them. Here is how to find the group that govern...
- 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...
- Buildings with no certificate of occupancyOlder New York City buildings can lawfully have no certificate of occupancy. A letter of no objection is how the City confirms the lawful use instead.
- 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...
- DOB objections on zoning groundsA plan examiner raises a zoning objection when the filing does not match the Zoning Resolution. Here are the four ways it is cleared and how long e...
The violation code
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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.