Lock types and what they cost installed
Standard deadbolts and knob or lever sets are the baseline on most entry doors. Multipoint locking systems, common on higher-end entry and patio doors, engage at multiple points along the frame for better security and a tighter seal against drafts.
- Standard deadbolt, installed: $75 – $200
- Entry knob or lever set with deadbolt, installed: $150 – $350
- Multipoint lock system, installed (often bundled with a new entry or patio door): $400 – $1,200
- Smart lock or keypad lock, installed: $200 – $500
- Door closer (storm doors or heavy-traffic doors): $50 – $150
Source: Reference ranges for professionally installed door projects across Central Pennsylvania, aggregated from full-service installer quote data ((HomeGuide, 2024), (Angi, 2024)) and adjusted for the local market using regional construction-cost indices ((RSMeans CCI, 2024)). ROI benchmarks cross-checked against (Cost vs. Value, 2024). Not a quote; actual bids depend on your specific doors and frame condition.
What actually improves entry door security
A grade 1 or grade 2 deadbolt with a reinforced strike plate and 3-inch screws into the framing matters more than the brand name on the lock. Long screws that reach the jack stud, not just the door jamb, make a dramatic difference in resistance to forced entry, this is one of the cheapest and most overlooked upgrades available.
Smart locks: what to check before buying
Smart locks retrofit onto most standard deadbolt bores, but battery life, weather exposure, and Wi-Fi vs. Bluetooth-only connectivity vary a lot between models. For an exterior entry door exposed to weather, confirm the model is rated for outdoor use, some are designed primarily for interior-facing garage or mudroom doors.
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Frequently asked questions
Do I need to replace the whole door to upgrade the lock?+
No, most standard deadbolts and knob sets can be swapped without touching the door itself, as long as the existing bore holes match the new hardware's backset. Multipoint lock systems typically require a compatible door and frame, which is why they're usually installed alongside a new door.
Are smart locks reliable on exterior doors in cold weather?+
Quality smart locks rated for exterior use handle Central PA winters fine, but battery drain is faster in cold temperatures, so check the battery life rating and keep spares on hand. Confirm the model is explicitly rated for outdoor/exterior installation.
What's a multipoint lock, and is it worth it?+
A multipoint lock engages two or three points along the door's edge instead of just one deadbolt point, improving both security and the seal against drafts. It's a meaningful upgrade on entry and patio doors, especially exposed, high-visibility entries, though it typically requires the door and frame to be prepped for it.
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