Moving into a new home is exciting. But before you unpack a single box, there's one thing you should do: change the locks. It's not paranoia — it's a basic security step that protects you from a very real, very common risk.
When you move into a previously owned or rented home, you have no idea how many copies of the keys exist or who has them. Previous owners, ex-partners, contractors, cleaners, neighbors, real estate agents — the list is long. Any one of them could still have a working key.
For most new homeowners, rekeying is the fastest and most cost-effective first step. If the existing locks are Grade 1 and in good condition, rekeying immediately invalidates all previous keys without replacing hardware. It typically costs $15–$25 per lock.
If the existing locks are Grade 2 or 3, damaged, worn, or you want smart lock features — replace them. Moving into an older home often reveals locks that are decades old and due for replacement regardless of security concerns.
Homeowners often change front door locks but forget other access points. Check every exterior lock including garage entry door, back door, side gates with locks, and any basement entry.