The license rule that shapes every New York job
New York State DEC is direct about this. You may deal with a nuisance animal on your own property, but moving a trapped animal off that property and releasing it elsewhere requires a nuisance wildlife control operator license. That single rule sorts good vendors from bad ones faster than any review site. It also rules out the ending most people picture. Nobody licensed is driving your raccoon to a park upstate as a favor, and anyone who implies that is either unlicensed or telling you what you want to hear. In a city where a super with a borrowed cage trap is a common first response, this is worth knowing before the cage goes on the roof. What it leaves is the work that actually matters. If the animal cannot simply be exported, the value in what you are paying for sits in the inspection and in the sealing: the bolted flue cap, the metal at the cornice, the screened roof vent, the bulkhead door that closes against its frame. Ask to see the license, then ask what gets sealed.
Why the chimney is the New York den
Across most of the country the classic raccoon entry is a soffit return. In New York City it is a chimney, and the reason is the building stock. A city that traces its housing back to a settlement founded in 1624 has an enormous number of masonry flues, and a large share of them serve fireplaces that have not been lit in decades and were never capped. From the animal's point of view a flue is close to perfect. It is vertical, which suits a species built to climb. The smoke shelf just above the damper is dry, dark and sheltered from wind. It is unreachable by dogs, and it opens onto a roof that connects to every other roof on the block. That is why a denning female heading into spring will pick a chimney over almost anything else, and why so many New York calls come from people who smelled something in the fireplace before they ever heard footsteps. It is also why capping unused flues is the cheapest meaningful step a building can take. One bolted stainless cap closes the best den site the building has.
Attached buildings, connected rooflines
Exclusion advice written for detached suburban houses assumes your roof is an island. In much of New York City it is the opposite. Row houses and attached buildings share a continuous line of parapets and cornices, and a raccoon can cover an entire block up there without ever descending to the sidewalk. The practical consequence is that a sealing job stopping at your property line moves the problem rather than solving it. Cap your flue and screen your vents and the animal simply uses the next building, which keeps it in the neighborhood, on the shared roofline, and available to come back the moment something on your roof loosens again. This is worth raising with a co-op board, a managing agent or a block association, because coordinated work across adjoining buildings costs each owner less and accomplishes far more. At minimum, tell your immediate neighbors what you found and where. The animal that has been using your cornice has almost certainly been using theirs, and a shared roof problem gets solved by shared repairs.
Trash, food, and why the population stays high
New York City supports raccoons in numbers a wooded suburb would struggle to match, and the reason is dinner. In a city of 8.3 million people, a great deal of household waste sits at the curb in bags overnight, and a bag is a container only in the loosest sense to an animal with hands. That reliable food supply does two things. It keeps the local population dense, so a vacancy created by removing one animal fills quickly. And it keeps raccoons moving along a nightly route that includes your block, which means your roof gets tested regularly rather than occasionally. You cannot fix the city's waste stream from one building, but you can change your own contribution. Closed containers instead of open bags wherever the rules allow, no pet or stray cat food left on fire escapes and terraces, and lids that actually latch all reduce the reason an animal stops at your address. Combine that with sealed openings and the building stops being interesting, which is the realistic goal in an urban setting rather than an animal-free block.
Getting a management company to act
In most city buildings you do not control the roof, which makes documentation your main tool. Report the noise in writing the day you hear it, and include the date, the time it starts, the room it is over and which floor you are on. Follow up in writing every time it recurs, because a pattern in email is much harder to dismiss than a phone call. Make the argument in terms the managing agent responds to. Roof, chimney, cornice and parapet are building elements, so this is a structural repair rather than a resident expense. A raccoon in a flue can block a chimney, and urine working through a top-floor ceiling damages plaster and drywall that the building will end up repairing anyway. Timing is the strongest point. A call handled in March deals with one adult. The same call handled in June deals with a mother and kits, a longer removal, and contaminated material to remove. Putting that in the written report, plainly, tends to move a repair up the list faster than describing the noise again.
Cleaning up on a city roof or in a ceiling
Once the animal is gone the contaminated material is still there, and the timing is what should worry you. According to the CDC, raccoon roundworm eggs passed in a latrine take two to four weeks to become infectious, and after that they resist ordinary disinfectants and need boiling water or flame to destroy. Hosing a roof deck spreads material rather than cleaning it. A proper cleanup means bagging and removing the fouled material, treating the surface beneath, and replacing any insulation that was soaked. Crews should be in respirators and disposable suits with bags sealed before they leave the roof. On a shared roof deck or terrace, keep everyone off the area until that work is done rather than roping off half of it. There is a building-value argument for finishing properly. With a median home value near $732,000 in this city, a stained top-floor ceiling and a contaminated ceiling cavity are not cosmetic issues, and they surface at exactly the wrong moment during a sale or a refinance. The week the removal happens is the cheapest time to have all of it done at once.