as built survey nyc
An as-built records the finished condition: the location and dimensions of what was actually constructed, against the approved drawings. Two things generate demand for it in this city. The first is procedural - a DOB filing conditioned on as-built documentation, or a sign-off that will not issue without it. The second is that the building departed from the plans, which happens for entirely ordinary reasons: an unexpected condition in the ground, a change agreed on site and never drawn, or work carried out by an earlier owner with no filing at all. Legalising existing work almost always starts with an as-built, because nothing can be filed until somebody has measured what is standing. The drawing states plainly what is there, including where it differs from the approved set - that difference is the entire reason the document is being asked for.
An as-built records the finished condition - location and dimensions of what actually stands - and sets it against the approved drawings. The document exists because those two things routinely differ, and the difference is precisely what somebody needs to see.
The first is procedural: a Department of Buildings filing conditioned on as-built documentation, or a sign-off that will not issue without it. The second is that the work departed from the plans. That happens for entirely ordinary reasons - an unexpected condition in the ground, a change agreed on site and never drawn, or work done by a previous owner with no filing behind it at all. Legalising existing work almost always begins here, because nothing can be filed to legalise a structure until somebody has measured the structure.
Exterior as-builts are straightforward. Interior work in an occupied building is not, and the constraint is access rather than measurement. On a the Bronx or Mount Vernon two-family, or a Brooklyn brownstone converted decades ago, arranging entry to every unit takes longer than the survey. Tell us the unit count and what access is realistic on the first call and the date we give you will be the date you get.
Legalisation work concentrates in the older attached stock of Brooklyn, Queens and the Bronx. Detached-house alterations in Staten Island and Yonkers produce their own version - decks, garages and additions built without filing. Manhattan work is more often interior, tied to a commercial fit-out or a conversion. The construction stakeout that guided construction and the topographic survey that preceded design are the two documents this is usually checked against, and a title survey may be needed in parallel if there is a sale involved.
How long does it take? Field measurement is proportional to how much was built and how accessible it is. Interior as-builts of an occupied building need access arranged in advance.
These are usually asked for on the same transaction:
Marking building corners, offsets and grades on site so what gets built matches what was approved.
Learn More →Existing grades, elevations and site conditions - what an architect or engineer needs before anything is designed.
Learn More →The drawing a residential closing usually needs: lot lines, building footprint and anything crossing a line.
Learn More →Free - No obligation
Two minutes. We come back to you the same business day.
If it is urgent, call us now on (315) 981-8556
Something went wrong at our end. Call (315) 981-8556 and we will take the details over the phone.