Homeowners typically pay for knob and deadbolt replacement to upgrade security or fix worn hardware. The overall cost depends on hardware quality, installation time, and any additional prep or labor needs. This article presents cost ranges in USD, with clear low, average, and high figures to help plan a budget for replacing door knobs and deadbolts.

Assumptions: standard single-family exterior door, standard mortise or cylindrical deadbolt, mid-range finish, normal access, and no structural work.

What Buyers Typically Pay for Door Knob and Deadbolt Replacement

Typical total price for replacing a single exterior door knob and deadbolt ranges from $120 to $280, with most projects landing around $180-$230 when using standard hardware and straightforward installs. If upgrading to a premium finish or a high-security deadbolt, expect a higher average of $250-$350 for the door. For interior doors, prices can be lower, generally $80-$180 total.

Main Cost Drivers in a Door Hardware Replacement

The largest contributors are the hardware cost, installation time, and any prep work. Hardware quality and finish drive the price more than basic function. A basic cylindrical knob with a standard 1-inch bore is usually $25-$60 per set, while a deadbolt can range from $25-$120. Labor to install a single door typically $75-$150, depending on access and whether the door requires alignment or latch adjustment.

How Labor Time and Crew Size Change the Bill

Labor costs scale with the complexity of removal, alignment, and any required bore adjustments. A straightforward swap on a standard door takes roughly 30-60 minutes, often billed as a fixed per-door rate of $75-$150. If two doors are done in the same visit, some contractors offer a small discount. Custom work, like re-drilling or mortising for a new deadbolt style, increases labor to 1-2 hours per door.

Hardware Quality and Finish That Hit Price Bands

Finish and material quality significantly impact price. Brushed nickel and matte black finishes are common mid-range choices with prices that sit around $30-$90 per knob and $40-$120 per deadbolt. Premium high-security locks, smart locks, or combined kits can push parts to $150-$300 for the pair, plus installation. For durable brass or reinforced strike plates, expect an additional $10-$25 per unit.

Regional Price Variations for Door Hardware Installations

Prices shift based on local labor rates and material availability. In the Midwest, typical total per-door replacement might land near $180-$230, while in high-cost urban coastal markets, totals can rise to $230-$350. Suburban areas often fall between these extremes. Delivery time and access conditions also affect regional pricing.

Impact of Replacing One Door Versus Multiple Doors

Replacing a single door is the most economical scenario: $120-$280 total. Replacing two doors during the same visit often saves on labor per door, with combined totals commonly in the $240-$520 range. For three or more doors, installers may offer bundled pricing or a per-door discount, bringing the average per-door cost down to the $90-$170 range.

Smart Lock Options Versus Traditional Hardware and Price Gap

Smart lock installation adds features such as keyless access and app control. Typical smart-lock installation adds $100-$250 per door compared with traditional hardware, assuming standard power access and no wiring retrofits. Hardware costs for smart locks vary widely, from $120 to $350 per unit, with installation often $75-$150 per door. If a retrofit requires drilling or wiring, the price can climb further to $350-$600 per door total.

Ways to Cut Costs on Door Knob and Deadbolt Replacement

Smart budgeting hinges on scope control and material choice. Stick with standard finishes and avoid premium security features if cost is a concern. Consider reusing existing strike plates when compatible, or selecting a mid-range deadbolt with a trusted warranty. Scheduling in a non-peak season can sometimes yield a 5-15% lower labor rate. If two or more doors share the same hardware, ask for a bundle quote to reduce per-door installation fees.

Cost Component Breakdown