Does a brand-new home really need to be rekeyed?

Yes, it is worth considering even for new construction. Builders, subcontractors, real estate agents, inspectors, and cleaning crews may have had a key or lockbox code during construction and final walkthroughs. Rekeying resets who can use a key, which is a reasonable step regardless of whether the home is new or previously owned.

Who typically has had access to a new home before the owner moves in?

Depending on the project, this can include the general contractor and subcontractors, real estate agents who held lockbox access, home inspectors, cleaning or staging crews, and sometimes neighbors or property managers who were given a key temporarily during the closing process. Exactly who had access varies by builder and transaction, so it is worth asking directly.

Should I rekey or fully replace the locks on a new home?

For most new homes, rekeying the existing hardware is enough since the locks themselves are new and in good condition, and it resets which keys work without replacing hardware. Full replacement makes more sense if you want to upgrade to a smart lock, unify mismatched hardware brands, or if any lock was damaged during construction.

Do New Homes Need a Locksmith Before Move-In?

It's an easy assumption to make: if a home is brand new, nobody has used the locks before you, so there's nothing to worry about. In practice, "new construction" doesn't mean "no one else has had access." Between groundbreaking and the day you get your keys, a new home typically passes through more hands than most buyers realize.

Who actually had access before you moved in

New construction and turnover involve a working list of people who may have had a key, a code, or lockbox access at some point:

General contractor and subcontractors — electricians, plumbers, painters, flooring crews, and others often need entry throughout the build, sometimes sharing a single lockbox code among the crew
Real estate agents — listing and buyer's agents commonly use lockbox access for showings, and that access doesn't always get formally revoked the moment escrow closes
Home inspectors and appraisers — anyone who needed to walk the property before closing may have had temporary access
Cleaning and staging crews — final move-in cleaning or staging teams often need a key or code for a scheduled visit
Neighbors or property managers — in some transactions, a spare key is left with a neighbor or a managing agent during the sale process and isn't always retrieved afterward

None of this means anything went wrong. It simply means a "new" lock isn't the same thing as a lock only you have ever had a key to.

Why this matters more than people expect

The concern isn't usually about any one specific person. It's the accumulation: lockbox codes that get shared informally, keys that get duplicated "just in case," and the reality that most people don't track every hand a construction-phase key passed through. Rekeying resets that history in one step, without requiring you to identify or contact everyone who might have had access.

How this is different from a general moving-day checklist

A typical move-in checklist covers things like changing your address, setting up utilities, and confirming appliances work. The inherited-key risk is a narrower, security-specific issue: it's about who could still have a functioning key to your exterior doors on day one, independent of anything else on a moving to-do list. It applies whether the home is 40 years old or was finished last month, though the specific list of people involved looks different for new construction than for a resale.

What to check before or right after move-in

Ask the builder directly — find out whether the same key was used across the construction phase and whether it was changed after final walkthrough
Ask about lockbox history — if a lockbox was used during the sale, confirm it has been removed and that the code isn't still active anywhere
Count the keys you actually received — if you were handed fewer keys than doors, or the builder can't confirm how many copies exist, that's a reasonable prompt to rekey
Inspect all exterior locks, not just the front door — side doors, garage entry doors, and any secondary structures should be included in the same review

Rekey or replace: what makes sense for a new home

For most new-construction homes, the locks themselves are typically in good condition, so rekeying—changing the internal pins so old keys stop working—is usually enough. It resets access without replacing hardware you just paid for. Full replacement makes more sense if you want to upgrade to a smart lock system, unify mismatched hardware brands installed by different subcontractors, or if a lock was damaged or improperly installed during construction. A locksmith can inspect the existing hardware on-site and tell you which locks are good candidates for rekeying and which might be better replaced.

A simple rule of thumb

If you can't personally account for every key and every code that has ever unlocked your front door, it's reasonable to have the locks rekeyed. That's true for a resale home with a known chain of previous owners, and it's just as true for new construction with an unknown number of contractors, crews, and agents who passed through during the build.

The takeaway

New construction doesn't erase the inherited-key question—it just changes who's on the list of people who may have had access. Contractors, agents, inspectors, and cleaning crews can all have had a key or code before you ever got yours. Rekeying before or shortly after move-in is a straightforward way to make sure the only working keys are the ones you personally control, regardless of how new the home is.

Call (408) 877-2177 to Schedule a Rekey