Can multiple locks be installed on an entryway door?

• A. Yes - as long as the primary deadbolt lock is functional
• B. No
• C. Yes, but only with homeowner approval
• D. Yes, regardless of deadbolt status

Answer: (A)

You can have multiple locks on an entry door, but the main point is that the primary deadbolt must be functional. A functioning deadbolt provides the core level of security, and adding extra locking devices can enhance protection without undermining safety. If the deadbolt isn’t working, the door’s security is weakened, even if other locks exist, so simply adding more locks doesn’t fix that problem. The decision to add locks isn’t about homeowner approval in this context; it’s about keeping the essential lock reliable. In short, extra locks are acceptable as long as the primary deadbolt operates correctly. The other options aren’t correct because they either overly restrict adding locks, make approval a gating factor, or permit locking when the main deadbolt is nonfunctional.