The Landlord’s Rekeying Playbook: Two-Family & Multi-Unit Buildings in NYC and Nassau

Every turnover without a rekey is a liability you’re choosing. Here’s the system smart landlords use across Queens, Brooklyn, and Nassau.

Call 347-797-1671 — 24/7

The two-family house is the backbone of outer-borough real estate — and of Nassau’s rental stock. It’s also where we see the most avoidable security failures. Not break-ins through the door: walk-ins with a key that should have been dead months ago. Here’s the playbook we run for landlords across the boroughs and the county line.

Rule One: Every Turnover, Every Lock, No Exceptions

A tenant leaves, and their keys don’t. Roommates, partners, dog walkers, and the copy made at the hardware store in 2019 — none of them show up at checkout. Rekeying at turnover is $20-50 per lock and closes the whole question. We run turnover routes daily through the two-family belts of Woodside, Corona, Elmhurst, and Jackson Heights, and across Flatbush and Sunset Park in Brooklyn.

Keyed-Alike, Keyed-Separate, or Mastered?

Keyed-separate (the default).

Each unit its own key. Simple, private, and what most tenants expect.
Keyed-alike (for your own doors).

Your basement, garage, and utility doors on one key. Convenience where privacy isn’t an issue.
Landlord master system (the upgrade that pays for itself).

Tenant keys open their unit only; your master opens everything. Essential from about four units up, and popular with the student-rental landlords around Hofstra in Uniondale and Hempstead, where turnover is annual and constant.

The Nassau Wrinkles

Suburban rentals add their own items: garage-door opener memories that previous tenants’ cars still hold (clear and re-pair at every turnover), shed and gate padlocks that never get changed, and — on the South Shore canal blocks of Freeport and Baldwin — corroded hardware that fails its next tenant in February. A turnover visit covers all of it at once.

The Tenant-Relations Bonus

Nothing says “professional landlord” on move-in day like fresh-cut keys and the sentence “the locks were rekeyed this morning — you have the only copies.” It sets the tone, and it’s true. (Tenant-side rules — who may change what, and key-copy obligations in NYC — are covered in our co-op & rental lock guide.)

Portfolio landlords: we maintain key records per property and schedule multi-building turnover routes across Queens, Brooklyn, and Nassau — one call covers the portfolio.

Turnover Coming Up?

We rekey whole buildings in one visit — keyed separate, alike, or on a landlord master system — with upfront pricing.

Call 347-797-1671

Frequently Asked Questions

Do I legally have to rekey between tenants?

It’s not universally mandated, but it’s the standard of care — and if a former tenant’s key is used in a break-in, ‘we never rekeyed’ is not where you want to stand. The cost is trivial against the liability.

What’s a landlord master-key system?

Each tenant’s key opens only their unit; your one master opens everything. We build these for two-families up through multi-unit buildings — no more keyring the size of a fist.

Can you rekey all my units in one visit?

Yes — a typical two-family takes under an hour; larger buildings are scheduled so tenants aren’t disturbed. Call 347-797-1671 to book a turnover.

Should basement, garage, and common doors be on the system too?

Absolutely — common-area doors keyed to the master, unit doors individual. Mailboxes and storage can be included in the same visit.