boundary survey nyc
A boundary survey answers one question: where does your parcel legally end. In most of the country that is a field exercise. In New York City it is a records exercise first. Manhattan and Brooklyn lots were laid out and re-laid out across two centuries, deeds reference monuments that were removed before anyone alive was born, and the tax map is a tax document rather than a legal description of the parcel. We reconcile the deed, the prior filed surveys and the tax map against what is physically on the ground, and the drawing shows where those disagree. That disagreement is the reason the survey exists - a fence three feet inside the line and an extension eighteen inches over it are both normal findings here, and both change what a buyer, a lawyer or a neighbour does next.
Everywhere else a boundary survey begins in the field. Here it begins in the record room. A Manhattan lot may carry a chain of title running back to a period when the description referenced a fence post, a stone or the corner of a building that has not existed in living memory. The tax map is a tax instrument, not a legal description, and prior filed surveys disagree with each other more often than anyone expects. Our job is to establish which of those documents controls, and only then to go and measure.
The findings repeat by housing type rather than by borough. On attached rowhouse stock the recurring issue is a rear extension: built into the yard at some point across the last eighty years, frequently never filed, and sitting closer to the rear line than the record contemplates. That is the standard Brooklyn and Queens finding. On detached houses with real side yards - most of Staten Island, much of the Bronx - it is a garage over a line, a driveway that has migrated, or a fence set to convenience rather than to the deed. In Yonkers and Mount Vernon, steep frontage and shared access produce driveways that serve two houses with no recorded easement behind them.
It establishes where the record line runs and where things physically are. It does not decide a dispute. Long-standing occupation can carry legal weight in New York, and that is an argument for an attorney to make - but no attorney can make it without the measurement in front of them. The survey is the factual base every subsequent step is built on.
If the reason is a sale, what you probably need is a title survey rather than a full boundary survey - narrower scope, faster, and what title companies expect. Commercial transactions call for an ALTA/NSPS survey instead. If the intention is to split or merge parcels, that is a subdivision survey and the boundary work is the first stage of it.
How long does it take? Field work is usually a single visit. The record research is what sets the timeline, and on an older parcel with a long chain of title it can be the larger half of the job.
These are usually asked for on the same transaction:
The drawing a residential closing usually needs: lot lines, building footprint and anything crossing a line.
Learn More →The national standard commercial lenders and title underwriters require on a transaction. Defined content, not a general drawing.
Learn More →Dividing a parcel, merging two, or moving a line between them - and the drawing the filing requires.
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