How to Word a Rekeying and Lock-Change Clause (2025)

TL;DR: A rekeying clause should state that locks are changed or rekeyed at the start of every new tenancy, name who pays (usually the landlord, sometimes billed back), set a deadline of 3-5 business days from move-in, and require tenant written consent before anyone else swaps a lock during the lease. Most disputes come from vague wording, not bad intentions.

_Last reviewed: July 2026 · 6 min read_

Nobody thinks about the lock clause until a tenant changes it without asking, or a former resident still has a key six months after moving out. You want wording tight enough that everyone knows who pays, who's allowed, and how fast it happens — without turning your lease into a legal document nobody reads.

Okoniq Property Hub keeps a record of every rekey date, locksmith invoice, and key handoff per unit, so you're never guessing who has access to what.

Who should pay for rekeying between tenants?

The landlord pays for rekeying between tenants, and the clause should say so in plain terms. A standard cost runs $50 to $150 per exterior lock depending on your market and whether you're using a locksmith or a smart lock system, and this is a normal cost of doing business, not something to bill the outgoing or incoming tenant.

Here's wording that works:

"Landlord shall rekey or replace all exterior door locks prior to Tenant's occupancy, at Landlord's expense. Tenant shall not be charged for this service."

Some states, including California and Texas, treat this as close to mandatory practice even without a statute forcing it, because it protects both parties if something goes missing later. If you skip it and a break-in happens with an old key still in circulation, you're the one explaining why in a deposition, not the tenant.

How fast does rekeying need to happen after move-out?

Rekeying should happen within 3 to 5 business days of the previous tenant vacating, and the clause should hold a hard number, not "promptly" or "in a timely manner." Vague timing language is the single most common reason these clauses fail to protect a landlord — a judge can't enforce "soon."

Sample clause:

"Landlord shall rekey all locks within five (5) business days of Tenant vacating the unit, and prior to occupancy by any new tenant."

If you manage several units and turnovers get tight, build this into your move-out checklist the same way you'd schedule a foundation check every spring — a fixed date on the calendar, not a someday task.

Who's allowed to change a lock during an active lease?

Only the landlord, or a locksmith authorized in writing by the landlord, should be allowed to change locks during an active tenancy. Tenants sometimes swap a lock themselves for privacy or safety reasons, which is understandable, but it creates a real problem: if there's a fire or medical emergency, you or emergency responders may not have a working key.

Clause language:

"Tenant shall not add, remove, or rekey any lock on the Premises without Landlord's prior written consent. Any lock installed by Tenant must be accompanied by a duplicate key provided to Landlord within 24 hours of installation."

This isn't about control for its own sake. It's the same logic behind requiring 2-prong to 3-prong outlet upgrades go through a licensed electrician instead of a tenant's DIY fix — safety-critical systems in the unit need a paper trail.

What should the clause say about key returns and lost keys?

The clause should require all keys, fobs, and garage remotes returned at move-out, with a stated dollar penalty for lost or unreturned keys. A common number is $25 to $75 per key or remote, enough to cover a rekey without functioning as a punitive fee a court would strike down.

"Tenant shall return all keys, fobs, and access devices upon vacating. Failure to return any issued key shall result in a charge of $50 per key, deductible from the security deposit."

Pair this with a simple key log — how many keys issued, to whom, on what date — kept the same way you'd track knob-and-tube wiring inspections or any other item you need documented proof of at turnover. If a dispute ever reaches small claims, a dated log beats memory every time.

Does a smart lock change any of this wording?

Smart locks and keypad entries need the same clause logic, just swapped for codes instead of keys. Instead of "return all keys," the clause should say the landlord resets the access code within 24 to 48 hours of move-out, and the tenant's temporary code is deactivated automatically or manually on the lease end date.

"For units equipped with electronic locks, Landlord shall deactivate Tenant's access code no later than 48 hours following the lease termination date."

Smart locks actually simplify enforcement — no lost-key disputes, and the reset takes minutes instead of a locksmith visit. If you're managing several units, this is often cheaper over a 3 to 5 year horizon than repeated rekeying costs, even with an upfront hardware cost of $150 to $250 per lock.

FAQ

Is rekeying between tenants legally required?

In most states it isn't a strict statute, but courts and insurers treat it as standard due diligence, and skipping it can weaken a landlord's position if a security incident happens later with an old key still active.

Can a landlord charge the tenant for rekeying at move-in?

No, this cost is standard practice for the landlord to absorb, similar to painting or carpet cleaning between tenancies, and charging it to an incoming tenant is unusual and often unenforceable depending on local rules.

What if a tenant refuses to give back a key at move-out?

The lease should authorize a deduction from the security deposit, typically $25 to $75 per unreturned key, and the landlord should still rekey the unit regardless of whether the fee is collected.

Should the rekeying clause mention specific lock brands?

No, keep the clause brand-neutral and focused on function and timing, since specifying a brand can create maintenance headaches if that lock is discontinued or the landlord switches vendors.

How does rekeying affect the security deposit itself?

Rekeying costs come out of the landlord's operating budget, not the tenant's deposit, unless the tenant caused unusual lock damage or failed to return keys, in which case those specific charges can be itemized on the move-out deposit statement.

This is educational information, not legal advice. Consult a local landlord-tenant attorney before finalizing lease language, since key-and-lock requirements vary by state and sometimes by city ordinance.