Moving into a brownstone in Park Slope - what should you do about the locks first?

Rekey or replace every lock before you move a single box in. That is the honest answer. It does not matter whether you bought the brownstone, signed a new lease, or moved in after a breakup. You do not know who has a key. The previous tenant might have handed copies to a dog walker, a contractor, or a roommate who never returned them. A new super may or may not have collected every key at lease end. Changing the locks on day one is the one action that gives you a clean, documented starting point for your security.

Which locks on a Park Slope brownstone actually need attention when you move in?

Start at the front door. Most Park Slope brownstones have a Kwikset or Schlage deadbolt that has been rekeyed inconsistently across multiple tenancies. Look at the cylinder. If it wiggles, if the key drags, or if the bolt does not throw cleanly, you are looking at worn pins or a fatigued cylinder that needs replacement, not just rekeying. Worn pins are a real security risk because they can be manipulated more easily than a fresh cylinder.

Next, check the vestibule door if the building has one. Shared entry locks in brownstones converted to two or three units are almost always neglected. A landlord focused on key handover for the apartment often forgets that the building door has seen years of traffic. If you are the owner and you just bought the home, pull that lock entirely and install a fresh Schlage B60N or a Medeco Maxum. Both are ANSI Grade 1 deadbolts. The Medeco has a restricted keyway, which means copies cannot be made at a hardware store without authorization.

Do not skip the rear door or basement access. In brownstones with garden-level apartments, these secondary entries are common, and they are frequently secured with lightweight locks that would not stop a determined push. If a contractor finished work before you moved in, assume they had access to those doors. An access audit, where a locksmith walks every entry point with you, is the fastest way to catch what you would otherwise miss.

What lock upgrades make the most sense for a Brooklyn brownstone owner versus a renter?

If you own the brownstone, think long-term. A Medeco Maxum on the front door, combined with a Schlage Encode smart lock on a secondary entry, gives you high physical security at the main entry and keyless convenience for letting in cleaners, contractors, or Airbnb guests without cutting new keys. The Schlage Encode connects via Wi-Fi directly without a separate hub, which matters in older buildings where adding smart home infrastructure is not practical.

Renters have different constraints. You typically cannot replace hardware without landlord approval, but you almost always have the legal right to rekey a lock in New York. Rekeying a Kwikset or Schlage cylinder is inexpensive, fast, and reversible. When a roommate moves out or your lease ends and you are handing over keys to the next tenant, a fresh rekey is both responsible and protective. If you lost keys during your tenancy, do not wait for the annual check. Rekey the same week.

Smart locks are worth discussing with your landlord if you are in a loft or larger apartment where managing access for multiple people is a regular hassle. The August Wi-Fi Smart Lock installs over an existing deadbolt so it does not require replacing the cylinder your landlord controls. That makes approval conversations easier.

What should you check on locks before winter hits in Brooklyn, and how do you maintain them year-round?

Before winter is the most important seasonal check for Brooklyn doors. Brownstone doors are heavy, and they shift with temperature and humidity. A deadbolt that threw smoothly in September can bind by December because the door frame has swelled or the door has settled. That misalignment puts stress on the bolt and cylinder and accelerates wear. Check that the bolt seats fully without force. If you are pushing the door to get the key to turn, that is a problem to fix before the first freeze, not after.

Weatherproofing the lock itself is often overlooked. Graphite powder in the keyway keeps the cylinder operating smoothly in cold weather without attracting grit the way liquid lubricants do. Avoid WD-40 in locks. It displaces moisture short-term but leaves a residue that gums up the pins over time.

Before a vacation is also a smart trigger for a lock check. Confirm your deadbolt engages fully, check the door's strike plate screws (they loosen over time and are the most commonly overlooked weak point on an otherwise solid door), and verify that any secondary entries are secured. In Williamsburg and Bushwick, where ground-floor apartment windows and rear yard gates are common, this pre-vacation audit should include those access points too.

If you are a building owner in Crown Heights or Brooklyn Heights managing multiple units, schedule a building-wide lock maintenance check annually. Worn cylinders across several units are a liability, and catching them on a scheduled visit is far easier than responding to a lockout or a break-in after the fact.

For anything that requires hands-on evaluation, call Brooklyn Locksmith & Doors at (347) 357-0985. We work across Park Slope, Williamsburg, Bay Ridge, Crown Heights, and the rest of Brooklyn, and we can walk a full property with you, rekey on the spot, or recommend the right hardware for your specific door and situation.

Frequently asked questions

Do I really need to rekey if the landlord gave me new keys?

Yes. New keys mean nothing if the previous tenant, their ex, their contractor, or anyone else still has a copy. Rekeying changes the internal pins so old keys no longer work. It costs less than a full lock change and takes about 15 minutes per lock.

What is the best deadbolt for a Park Slope brownstone front door?

The Medeco Maxum and Schlage B60N are both strong choices for brownstone doors. The Medeco offers pick and drill resistance with restricted keyways so copies cannot be made at a hardware store. The Schlage is ANSI Grade 1 rated and more budget-friendly while still offering solid security.

How often should Brooklyn renters or homeowners check their locks?

Do a seasonal check every fall before winter, and again in spring. Check for loose cylinders, stiff deadbolt throws, and worn strike plates. If a roommate moved out, a contractor finished work, or you lost keys at any point during the year, do not wait for the seasonal check. Rekey immediately.