Renting an apartment presents a unique security challenge: you can't control the building's overall security, you may not be able to modify the locks, and you have no idea who has had access before you. Here's what renters can realistically do to improve security.
Most leases prohibit permanently modifying locks without landlord approval — and with good reason (landlords need emergency access). However, many states require landlords to rekey between tenants. Know your state's rules. In Utah, landlords must provide working locks but tenants can request rekeying (often at tenant's expense).
Formally request — in writing — that your landlord rekey all locks before you move in. Many landlords will comply. If they refuse and your state requires it, you have legal grounds. Document the request and their response.
Window pin locks (a screw through the inner and outer sash) are removable and leave only a small hole — acceptable in most leases. Security film can be removed with a heat gun. Window alarms are completely portable.
Some smart locks are designed for renters — they attach over the existing deadbolt thumb turn on the inside without modifying the lock. Devices like August Smart Lock Pro install in minutes, leave no permanent modifications, and remove completely at move-out.