Door Hardware & Locks

Match the lock type to the door function: entry doors typically use deadbolts or keyed cylindrical locks for security, interior bedroom/bathroom doors use privacy locks, and passage knobs/lever sets are for non-locking rooms. Check door thickness (usually 1-3/8"–1-3/4") and backset (commonly 2-3/8" or 2-3/4") before buying

Look for ANSI/BHMA grading (Grade 1 highest for commercial, Grade 2 common for residential security) and features like a solid deadbolt, anti-drill/anti-pick components, reinforced strike plates, and longer throw bolts (1" recommended) to improve resistance to forced entry

Many electronic and smart locks are designed to replace only the interior side of a cylindrical lock or deadbolt and fit standard door preparations, but confirm compatibility with your door thickness, backset, and whether you need Wi‑Fi/Zigbee/Z‑Wave/Bluetooth integration or power source (batteries)

Prices vary by type and quality: basic interior locks and latch sets can be under $50, residential deadbolts and mid-range smart locks commonly fall in the $75–$250 range, while heavy-duty or commercial-grade hardware can cost more; the category average price is roughly in the low hundreds

Typical installations require a screwdriver, tape measure, chisel or hole saw (if drilling a new hole), and possibly a drill; many consumers can install common locksets with basic DIY skills by following included templates and instructions, but complex or masonry doors may need a professional

Keep moving parts lubricated annually with a graphite or silicone-based lubricant (avoid oil-based lubricants that attract dirt), tighten loose screws and hinges, and inspect strike plates and weatherstripping; for electronic locks, check and replace batteries per manufacturer recommendations

Rekeying is a cost-effective option when you want to change who has access without replacing hardware and is possible for many mechanical locks; replace the lock if it is damaged, has compromised security features, or you need a different function (e.g., add electronic access)