Summary:
Most Nassau County homeowners don’t think twice about permits when a tree needs to come down. Maybe it’s storm-damaged, maybe it’s crowding the house, maybe it’s just dead. Either way, the plan is simple: call a tree company, get it removed, move on.
Then they find out about the permit. Or worse — they don’t find out until after the tree is already gone.
Tree removal rules in Nassau County are more layered than most people expect, and the consequences for skipping the process can be severe. This page walks you through what’s required, what it costs, and how to avoid the kind of fine that ruins an otherwise straightforward project.
Tree Permit Requirements by Nassau County Township
Nassau County is governed by three townships — Hempstead, North Hempstead, and Oyster Bay — plus two cities and 64 incorporated villages, each of which may have its own tree ordinance layered on top of the township’s rules. That structure is the root of most of the confusion homeowners run into. The township sets the baseline, but your village can make things stricter.
In general, permits are required when a tree exceeds a certain diameter, is located in a regulated zone (like the front yard or right-of-way), or falls under a local preservation ordinance. The exact threshold depends on where you live in Nassau County — and “I didn’t know” is not a defense that holds up with code enforcement.
Tree Cutting Permit Rules in Hempstead, North Hempstead, and Oyster Bay
Each of Nassau County’s three townships handles tree permits a little differently, which is why blanket answers don’t work here.
In the Town of Hempstead, trees located in the right-of-way — the strip between the curb and your property line — fall under the jurisdiction of the Highway Department. A permit costs $25, and the town generally won’t approve removal of a healthy, growing tree. If the tree is damaged, diseased, or posing a safety risk, that’s a different conversation, but you still need to go through the process before anything gets cut.
The Town of North Hempstead has a tiered fee structure: $25 for one or two trees, $50 for three to five, and $10 for each additional tree beyond that. Their application requires more documentation than most homeowners anticipate — a property survey, notarized authorization from the property owner, proof of contractor insurance with the town listed as Certificate Holder, and a copy of the contractor’s Nassau County Home Improvement License. That last one matters: if your tree company isn’t licensed at the county level, they literally cannot pull a permit in North Hempstead.
Oyster Bay requires permits for trees with a trunk diameter of 8 inches or more, measured at chest height (about 4.5 feet off the ground). The noncommercial permit fee is $25, but the permit often comes with conditions — stump grinding and replanting are commonly required. If there’s no space to replant, the town may accept a payment-in-lieu contribution of $150 to $500 into the town’s tree fund instead.
One more thing worth knowing: many of Nassau County’s 64 incorporated villages have their own ordinances that go further than the township’s rules. The Village of Muttontown, for example, regulates trees with a diameter of 7 inches or more. A homeowner there was fined $22,500 after removing seven storm-damaged trees following Superstorm Sandy — without permits. He had consulted tree experts who said the trees needed to go. He still got fined. That case was reported by CBS New York, and it’s a good illustration of why “the tree was obviously dangerous” isn’t a get-out-of-jail-free card in Nassau County.
When Do You Actually Need a Tree Removal Permit in Nassau County?
This is the question most homeowners start with, and the honest answer is: it depends on your specific location and the specific tree. But there are some consistent patterns worth knowing.
Permits are almost always required for trees above a certain size threshold — typically anywhere from 6 to 12 inches in diameter depending on the municipality. Front-yard trees and right-of-way trees are nearly always regulated. Some villages regulate every tree on the property, regardless of where it sits.
A few situations where permits are commonly required include removing a mature oak or maple that’s been on the property for decades, clearing trees as part of a construction project or pool installation, and removing trees after storm damage. That last one catches a lot of people off guard. There’s a common assumption that emergency situations are automatically exempt. They’re not. Some townships do offer expedited or same-day emergency permits for genuinely hazardous trees — one hanging over a bedroom, for example — but you still need to go through the process, even if it’s accelerated.
On the other hand, there are situations where permits may not be required: small trees under the diameter threshold, certain dead or diseased trees in specific townships, or trees in locations that fall outside regulated zones. The problem is that most homeowners can’t reliably determine which category their tree falls into without someone who knows the local code.
Timing also matters in Nassau County in a way that surprises people. Many townships restrict tree removal during bird nesting season, which generally runs from April through August. If you file a permit in May, you may find that the work can’t legally be done until September. That’s important to know before you schedule a crew.
Tree Removal Permit Costs, Timelines, and Violation Penalties
The permit fees themselves are relatively modest — $25 to $200 depending on the township and number of trees. The real cost of skipping the process is a different number entirely.
Fines for unpermitted tree removal in Nassau County can reach $10,000. When multiple trees are involved, each one is treated as a separate violation — which is how the Muttontown homeowner ended up with a $22,500 bill for seven trees. A $25 permit looks very different when you’re doing that math.
Standard permit processing takes 10 to 20 days from a complete application. Emergency permits can sometimes move faster, but only when the hazard is documented and the application is properly prepared.
How the Nassau County Tree Permit Application Process Actually Works
The permit application process in Nassau County is manageable — but it has more moving parts than most people expect when they first look into it.
At a minimum, you’ll typically need to provide a completed application form from the relevant township or village, documentation identifying the tree or trees being removed (location on the property, species if known, trunk diameter), proof that your contractor is licensed and insured at the county level, and in some cases, a property survey or site plan showing where the trees are located.
In the Town of North Hempstead, the contractor’s insurance certificate must list the town as Certificate Holder, and workers’ compensation must be documented separately using the NYS CE-200 form. These are specific requirements, not general ones, and an application that’s missing any piece of it will be delayed or rejected.
Once the application is submitted, the clock starts on that 10-to-20-day review window. During that time, the town may send an inspector to assess the tree. If the permit is approved, it may come with conditions — most commonly stump grinding and replanting a native species. Nassau County townships generally prefer native trees like red maple or American hornbeam over ornamental or invasive species when replanting is required.
If replanting isn’t feasible on your property, you’ll typically have the option to pay into the town’s tree fund instead, usually somewhere between $150 and $500 per tree. That’s not a penalty — it’s a built-in alternative — but it’s a cost homeowners often don’t anticipate when they’re budgeting for tree removal.
One thing that can significantly smooth the process: having an ISA Certified Arborist involved. Some Nassau County municipalities require arborist documentation for certain permit applications — heritage trees, right-of-way removals, or situations where a tree’s health and risk level need to be formally assessed. An arborist’s written assessment can be the difference between a permit being approved on the first submission or going back and forth with the town.
Why Nassau County Protects Its Trees So Aggressively — and Why That Affects You
It helps to understand why these rules exist, because it explains why enforcement isn’t going away anytime soon.
Nassau County sits between the Long Island Sound and the Atlantic Ocean. The water table is high, and mature trees play a real role in slowing stormwater runoff and preventing flooding — especially in communities closer to the coast like Island Park, Oceanside, and Long Beach. When a mature tree comes down, it’s not just an aesthetic loss. It’s a reduction in the property’s ability to manage water, and municipalities take that seriously.
Tree canopy also reduces summer temperatures. Shade from a mature tree can lower street-level temperatures by up to 10 degrees Fahrenheit, which matters in dense suburban neighborhoods where there isn’t much open space to absorb heat.
Beyond the environmental factors, there’s a property value dimension. Nassau County’s mature suburban neighborhoods — many of them developed in the postwar era — are defined in large part by their tree cover. Municipalities have a direct financial interest in protecting that. The fines aren’t arbitrary; they’re designed to make unpermitted removal more expensive than going through the process correctly.
All of this is also why some Nassau County townships specifically require that tree removal be overseen or documented by an ISA Certified Arborist. The credential exists for a reason — it takes at least three years of full-time professional tree care experience and a rigorous exam to earn — and municipalities that require it are looking for assurance that someone with real expertise assessed the situation before a protected tree came down.
For homeowners near power lines, there’s another layer: PSEG Long Island, the county’s utility provider, can prune or remove trees threatening high-voltage lines without local permits. But that authority only extends to their infrastructure. If the tree is on your side of the equation — on private secondary lines or simply close to utility infrastructure — you still need the local permit for your portion of the work.
How We Handle Nassau County Tree Removal Permits
The permit process in Nassau County is navigable — but it takes local knowledge, the right credentials, and time that most homeowners don’t have. Getting it wrong, even accidentally, can mean fines, stop-work orders, or a code violation that follows the property.
We’re ISA Certified Arborist-led, fully licensed, and carry the insurance documentation that Nassau County townships require as part of the permit application itself. We know the difference between how Hempstead, North Hempstead, and Oyster Bay handle these applications — and we know which villages add rules on top of that. When we take on a tree removal job in Nassau County, we handle the permit side of it so you don’t have to.
If you have a tree that needs to come down and you’re not sure where the permit process starts, reach out to us for a free estimate. We’ll assess the situation, walk you through what’s required for your specific property, and take it from there.
