1. Rekey or replace all exterior door locks on closing day or move-in day
Rekeying is often less expensive than full lock replacement and achieves the same security goal if the lock hardware is in good condition. The right choice depends on lock age, condition, and security needs. Either way, this step should happen within the first 24 hours of ownership — not the first week.
2. Reset garage, gate, and keypad codes immediately
Garage remotes, exterior keypads, and gate systems may still recognise old codes or prior users. Reset them on day one. Garage access is frequently overlooked even though it often provides full home entry — treat it with the same urgency as the front door.
3. Update smart locks, alarm systems, cameras, and security apps
If the home has smart locks, video doorbells, alarm systems, security cameras, or smart thermostats, reset ownership credentials and remove all prior user accounts. Change passwords, update account email addresses, and review device sharing lists. A smart device still linked to the seller's account is not under your control.
4. Confirm all keys and access items received at closing
Document the keys, mailbox keys, garage remotes, gate cards, storage keys, pool keys, HOA access fobs, and parking passes received at closing. If anything is missing, ask immediately. Missing access items create uncertainty about whether prior access still exists.
5. Walk every entry point and confirm it locks securely
Walk the full property and check every exterior door, window, basement entry, bulkhead door, sliding door, side gate, shed, and detached garage. Confirm each closes and locks properly. First-time buyers commonly focus on the main entrance and miss secondary access points.
6. Store spare keys intentionally
Decide who has spare keys and how they are stored. Avoid obvious exterior hiding spots. If you use a lockbox, smart lock, or trusted neighbor, document the decision. Access convenience should not undermine basic security.




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