Summary:
You’ve got a project lined up — a fence, a pool, maybe a deck addition — and someone just told you that you need a survey before you can pull a permit. Maybe you already have one from when you bought the house. Maybe you’re not sure what type you need, or whether your town even requires one. Nassau County doesn’t make this easy to figure out. The county website points you to individual municipalities, and there are a lot of them. This post walks you through exactly what building departments across Nassau County actually ask for, why older surveys get rejected, and what a current boundary survey looks like when it’s done right.
What Nassau County Building Departments Mean by a "Current Survey"
The phrase “current survey” shows up in permit instructions across Nassau County, and it trips people up constantly. It doesn’t mean any survey — it means a survey that accurately reflects your property as it exists today, produced by a licensed New York State Land Surveyor, signed and sealed.
The survey you received at your closing might be 5, 10, or 20 years old. It may not show a shed you added, a patio that went in, or a fence a previous owner installed. Building departments across Nassau County aren’t being difficult when they reject it — they need to know the current state of the property before they approve new construction. An outdated survey simply can’t tell them that.
Why Your Old Survey Gets Rejected — and What Qualifies Instead
Here’s where a lot of Nassau County homeowners lose time. They pull out the survey from their closing, submit it with their permit application, and get a rejection notice a week or two later. The building department flags it as not current, and now they’re back at square one — except their contractor is already on the calendar.
A survey gets rejected for a few common reasons. The most straightforward one is age: if the survey predates improvements on the property, it doesn’t reflect what’s actually there. Another is format — a location survey, which is the type most commonly produced for real estate closings and mortgage transactions, establishes the footprint of the house relative to the lot but isn’t the same as a boundary survey. For fence permits, addition permits, and pool permits, building departments typically want a boundary survey that clearly shows all property lines with dimensions, the location of existing structures, and the setback distances from the proposed improvement to every property line.
There’s also the legal piece. Only a survey that’s signed and sealed by a licensed New York State Land Surveyor is valid for permit submission. Tools like the Nassau County Land Records Viewer at lrv.nassaucountyny.gov are useful for looking up parcel information, but they carry no legal weight for permits or construction. Google Maps doesn’t either. If you’re submitting to a building department, it has to come from a licensed surveyor.
The practical upshot: if your survey is more than a few years old, or if any improvements have been made to the property since it was drawn, assume you’ll need a new one. Getting that confirmed early — before you’re mid-project — saves weeks.
Nassau County Has 64 Villages — and Each One Has Its Own Rules
This is the part that catches people off guard. Nassau County isn’t one building department — it’s dozens. The county itself doesn’t issue most residential building permits. That authority sits with the individual municipalities: the Towns of Hempstead, Oyster Bay, and North Hempstead, the cities of Long Beach and Glen Cove, and 64 incorporated villages, each operating its own building department with its own documentation requirements.
What that means practically is that what your neighbor needed in the next town over may be completely different from what your building department requires. The Village of East Rockaway, for example, requires two copies of a current, legible property survey for pool permit applications — plus a final survey after the project is completed. That’s a specific, documented standard from their official permit instructions. Other villages have their own variations on that.
All three major Nassau County towns — Hempstead, Oyster Bay, and North Hempstead — require a current survey as part of fence permit applications. The Town of Hempstead is the largest town in New York State by population, so the majority of Nassau County homeowners fall under its jurisdiction. But even within Hempstead, incorporated villages have their own layers of requirements on top of the town’s baseline.
The point isn’t to overwhelm you — it’s to explain why a generic answer to “do I need a survey?” doesn’t exist for Nassau County. The honest answer is: it depends on your specific municipality, your project type, and the current condition of your property. We’ve been working across Nassau County for over 50 years and know how these requirements vary from one town or village to the next. That local knowledge is what keeps your permit application from getting kicked back.
Boundary Survey for Fence, Pool, and Deck Permits in Nassau County
For most residential permit projects in Nassau County — fences, in-ground pools, decks, and additions — a boundary survey is the standard requirement. It’s worth understanding what that actually means, because “survey” gets used loosely and submitting the wrong type costs time.
A boundary survey establishes your property lines based on deed research and field measurements, locates existing improvements on the lot, and produces a sealed map showing dimensions, setbacks, and the position of structures relative to property lines. That’s the document your building department is looking for. It’s not the same as a topographic survey, a location survey, or a FEMA elevation certificate — though some projects require those as well.
What a Boundary Survey for a Fence Line Covers in Nassau County
A boundary survey for a fence permit does more than satisfy the paperwork requirement. In Nassau County, where lot widths commonly run 60 to 80 feet, the margin for error is real. A fence installed two feet off the property line is a fence on your neighbor’s property. That’s a dispute, a potential forced removal, and a relationship problem — all of which are far more expensive than a survey.
The survey process starts with deed and title research to establish the legal description of your property. From there, a licensed surveyor conducts field measurements using GPS and total station equipment to locate your property corners and lines as they exist on the ground. Existing improvements — your house, driveway, any existing fences or structures — are located and documented on the map. The final sealed survey shows your property lines with dimensions, the location of all existing improvements, and the proposed fence line relative to those boundaries.
When you submit for a fence permit, the building department uses that map to verify that your proposed fence meets setback requirements. Fence height limits vary by placement — front yards and rear yards are treated differently under most Nassau County municipal codes — and the survey establishes the lines that determine where those limits apply. Without a current boundary survey, the building department has no way to confirm compliance, which is why the application doesn’t move forward without one.
Property line marking — the physical staking of corners and lines in the field — is a related service that often follows a boundary survey for fence installations. Once the survey is complete and the permit is approved, having the corners physically marked on your property makes installation straightforward and removes any ambiguity for your fence contractor.
How Fast Can You Actually Get a Survey for a Fence Line or Pool Permit?
Turnaround time is where a lot of Nassau County homeowners get blindsided. The industry norm for Long Island land surveying is 4 to 7 weeks at many firms. If you’re in June or July and your pool contractor is scheduled for August, a 6-week survey turnaround doesn’t just delay your project — it cancels your summer.
Our typical turnaround is 5 to 8 business days. That’s not a marketing claim — it’s what customers have consistently reported in reviews, and it’s what we hold ourselves to. The difference matters when contractor schedules are already set and permit approval timelines are stacking up.
The sequence matters too, and it’s worth being clear about: the survey comes before the permit is approved, not after. Some homeowners assume they can start construction and get the survey done later, or that the permit can be approved first and the survey submitted as a follow-up. In most Nassau County municipalities, the survey is part of the permit application package. Skipping it doesn’t speed things up — it guarantees a rejection and forces you to start the clock over.
For pool permits specifically, some Nassau County villages also require a final survey after the project is completed, before a certificate of occupancy is issued. East Rockaway is a documented example of this, and they’re not alone. Knowing this upfront means you can plan for both surveys — the pre-permit boundary survey and the post-construction final — rather than getting caught off guard at the end of the project.
If you’re mid-season and trying to figure out whether you can still get a permit approved in time, the fastest path forward is a straightforward phone call or quote request. We can tell you quickly what your specific town or village requires, whether your existing survey qualifies, and how long the process will take from here.
Getting Your Nassau County Building Permit Survey Right the First Time
The permit process in Nassau County is fragmented by design — 64 villages, three towns, two cities, all with their own rules. That’s not going to change. What you can control is whether you go into the process knowing what your specific municipality requires, or finding out the hard way after a rejection.
The short version: most residential permit projects in Nassau County require a current boundary survey, signed and sealed by a licensed New York State Land Surveyor. Older surveys from your closing usually don’t qualify. The survey comes before the permit is approved, not after. And turnaround time matters — especially in summer, when contractor schedules leave no room for weeks of delay.
If you’re ready to move forward or just want to know where you stand, Islandwide Land Surveyors has been handling exactly this kind of work across Nassau County for over 50 years. Reach out for a free, no-obligation quote and we’ll tell you exactly what you need and how fast we can get it done.
