Before a big change in your Brooklyn home or business, what should you check on your locks?

The answer is simple: check your locks before anything changes ownership, access, or the physical door itself. That means verifying that cylinders are tight and functional, that no unauthorized copies of your key are floating around Brooklyn, and that any smart lock codes tied to old tenants, roommates, or contractors have been wiped. Most lock problems are discovered at the worst possible moment. A few minutes of inspection before a move, a renovation, or a tenant turnover prevents that entirely.

What should you check on a Williamsburg loft or brownstone before a renovation starts?

Contractors need access. That creates a key problem that most owners in Park Slope and Crown Heights do not think about until it is too late.

Start with a spare key roundup. Before the first worker sets foot in your building, collect every copy of your key. This includes copies given to previous contractors, dog walkers, cleaners, and former roommates. If you cannot account for all of them, plan a lock change or rekey before work begins, not after.

Next, check your cylinder for looseness. A loose cylinder on a prewar brownstone door is common. The set screw behind the face plate backs out over years of use. During a renovation, heavy vibration from demo work can shake a marginal cylinder completely free. Tighten it or replace it. A Schlage B60N or a Medeco Maxum are common choices on Brooklyn brownstones and both are field-rekeyable without replacing the whole lock.

If you are issuing a temporary key to a general contractor, consider a Schlage Encode Plus smart lock on a secondary entry. You can issue a temporary access code, set it to expire when the job ends, and run a full access audit from your phone afterward. No key copies to chase down. No lockout risk when someone loses the physical key mid-job.

After renovation, do a preventive replacement on any lock that took physical damage from the work. Drywall dust, paint, and impact can destroy the internal pins of an otherwise solid deadbolt. Test every lock with the door fully closed and latched before you sign off on the project.

What lock checks matter most after a roommate moves out or a lease ends in Brooklyn Heights or Bushwick?

A turnover rekey is the single most important step after any occupancy change. This applies whether you are a landlord in Bushwick flipping a unit, a co-op owner in Brooklyn Heights who ended a lease, or a renter who just went through a breakup and needs to know your ex cannot walk back in.

Rekeying changes the internal pin configuration of your existing lock so that old keys no longer work. It is faster and less expensive than a full lock change when the hardware is still in good condition. A Kwikset SmartKey cylinder like the one in the Kwikset 980 can be rekeyed in under two minutes with the SmartKey tool. A Medeco or Mul-T-Lock MT5+ high-security cylinder requires a trained locksmith and the right key blanks, but offers far stronger resistance to unauthorized duplication afterward.

If the outgoing tenant had a smart lock code, that reset needs to happen immediately. A smart lock code reset on a Yale Assure Lock 2 or Schlage Encode takes about ninety seconds from the app. Do not rely on changing the code only. If the previous tenant was connected to a shared access system, remove their user profile entirely.

After a building rekey or a change in building management with a new super, verify that your individual unit cylinder was actually changed. Building-wide rekeying almost never includes individual apartment locks automatically. Call and confirm, or have your unit rekeyed independently.

What should Bay Ridge storefront and commercial property owners inspect before going on vacation or preparing for a sale?

Commercial doors take more abuse than residential ones. Before you close up for any extended period or prepare for an estate sale or property transfer, run through these checks.

First, test your panic bar or exit device. Storefront panic bars, commonly Von Duprin 99 or Sargent 8800 series devices, need to latch and release cleanly. A sticky panic bar is a fire code issue and a security liability. If the device drags or the latch does not retract fully, service it before you leave or before a new owner takes possession.

Second, check door alignment. Bay Ridge brownstones and storefronts both settle. A door that is out of plumb puts lateral stress on the deadbolt throw, which wears the bolt and the strike plate faster than normal use. If your deadbolt requires force to turn when the door is closed, the door needs adjustment, not just a new lock.

Third, run a master key reset if you manage multiple units or doors under one key system. Before a property sale or an ownership transfer, you want every access credential accounted for. A full access audit documents which keys exist, who holds them, and whether any have been duplicated on restricted keyways like Mul-T-Lock or Medeco, which require authorization to copy.

For weatherproofing before winter, lubricate all lock cylinders with a dry graphite lubricant, not WD-40. WD-40 attracts grit and degrades pin springs over time. A well-lubricated Schlage or Medeco cylinder will cycle smoothly through a Brooklyn winter. A neglected one seizes in the cold.

If you are working through any of these situations right now, call Brooklyn Locksmith & Doors at (347) 357-0985. We handle residential and commercial lock work across all of Brooklyn, from prewar walk-ups in Park Slope to storefronts in Williamsburg.

Frequently asked questions

How do I know if my lock cylinder is too worn to rekey?

Insert your key and feel for grinding, sticking, or excessive wobble. If the cylinder is loose in the door or the key turns without resistance, it needs replacing before a rekey. A worn Schlage B60N or Kwikset 980 cylinder can fail during rekeying, leaving the lock unusable.

Can I reset a smart lock's codes without a locksmith?

Yes, most smart locks like the Schlage Encode Plus and Yale Assure Lock 2 allow a factory reset from the keypad or the manufacturer's app. However, if you have a Mul-T-Lock MT5+ or a Medeco smart cylinder integrated into a commercial system, call a locksmith. Resetting those incorrectly disables the whole access audit trail.

Does a building rekey cover my individual apartment in Brooklyn?

No. A building rekey resets the master key system and common area locks. Your individual apartment cylinder is a separate job. If your landlord rekeyed the building after a new super took over, your unit lock was almost certainly not touched. Arrange your own rekey separately.