Low-price door knobs typically cost $5-$25 per knob, while a basic replacement with professional labor often totals $35-$100 per door. The final price depends on whether the knob is passage, privacy, or keyed, how many doors are included, the finish and quality, and whether existing holes and latches fit.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Basic passage knob | $5 | $12 | $25 | For closets and rooms without a lock |
| Privacy knob | $7 | $15 | $30 | Interior lock with a push button or turn button |
| Keyed entry knob | $10 | $22 | $45 | Exterior access; price varies by security features |
| Installed replacement | $35 | $60 | $100 | Per door, assuming a straightforward swap |
| Six-knob interior upgrade | $45 | $110 | $240 | Hardware only; installation may be extra |
Assumptions: U.S. retail pricing for basic residential hardware; installation ranges assume existing doors and standard access.
Low-Price Door Knobs Cost by Type and Pack Size
For the lowest purchase price, a simple passage knob often costs $5-$15 each in a basic finish such as satin nickel or polished brass. These knobs have no lock and suit hallways, closets, and rooms where privacy is not needed. A two-pack may run $10-$30, although pack contents and finish availability vary.
Privacy knobs generally cost $7-$20 each. They are made for bedrooms and bathrooms and usually include a simple emergency-release feature. A keyed entry knob costs about $10-$30 at the budget end, with sturdier or more security-focused models reaching $45 or more. A matching deadbolt is usually a separate purchase, often adding $15-$40.
Retail multipacks can bring basic interior knobs down to $5-$12 per unit when the buyer needs four or more of the same type. Mixed packs are less common, and a pack of six passage knobs does not cover a project that needs privacy locks on bathrooms or keyed hardware on exterior doors. Check the function and the number of complete sets before comparing per-knob prices.
Budget pricing usually refers to the complete knob set, including both sides of the door, latch, and mounting screws. It does not necessarily include a new strike plate, longer screws, or a deadbolt. Online listings may show a single knob or one side only, so the package description should be checked before ordering.
What Parts of a Door Knob Quote Add the Most?
A hardware-only purchase may be inexpensive, but a contractor or handyman quote can include time to remove old hardware, adjust the latch, and test the door. For a single knob, a service minimum can outweigh the price of the hardware. When several doors are included, labor is often spread across the visit and the per-door cost falls.
| Quote item | Low range | Average range | High range | What changes the amount |
|---|---|---|---|---|
| Basic knob set | $5-$10 each | $12-$20 each | $25-$45 each | Lock function, finish, brand, and included latch |
| Labor | $15-$25 per door | $25-$45 per door | $50-$75 per door | Quantity, fit issues, and minimum charge |
| Accessories | $0-$5 per door | $5-$12 per door | $15-$30 per door | Strike plates, screws, or matching deadbolt |
| Equipment and setup | $0-$10 total | $10-$25 total | $25-$50 total | Usually included in a service visit |
| Removal and disposal | $0-$5 per door | $5-$10 per door | $10-$20 per door | Old hardware handling and haul-away terms |
For labor billed hourly, a common rate is $50-$100 per hour, with a minimum visit charge around $75-$150. A direct swap can take 15-30 minutes per door; correcting a loose or misaligned latch may take longer.
Not every quote lists setup or disposal as separate fees. Some contractors include these tasks in a per-door labor rate, while others charge a minimum even for a quick replacement. Ask whether the price covers both knob sides, the latch, strike plate adjustments, and removal of the old set.
How Lock Grade, Finish, and Door Thickness Change Price
Function is a major price driver. A passage knob has no lock, a privacy knob has a basic interior lock, and a keyed knob has a cylinder and key. At budget retail prices, switching from passage to privacy can add $2-$10 per door; keyed hardware may add $5-$20. Keyed knobs are not a substitute for a separate deadbolt when the door needs a second locking point.
Finish can affect both selection and cost. Common finishes such as satin nickel, matte black, and polished brass are frequently offered in low-cost ranges. Less common finishes or matching sets may add $5-$20 per knob, or require a higher-priced line. Matching several doors can also mean paying more to avoid mixing slightly different shades or shapes.
Door thickness and backset determine whether a standard set will fit. Many residential knobs accommodate doors about 1 3/8-1 3/4 inches thick, and common backsets are 2 3/8 or 2 3/4 inches. A door outside the stated range, a nonstandard bore, or a damaged edge may require special hardware or added work, potentially increasing the total by $15-$60 per door.
Construction matters when a knob will see frequent use. A low-cost knob with a lightweight finish may be adequate for an interior closet, but a heavily used entry may benefit from a more durable latch and a warranty. Moving from entry-level to midrange hardware may add $10-$30 per set. Confirm the door measurements and intended function before choosing by sticker price alone.
Can Replacing Knobs Instead of Locks Cut the Bill?
If a knob is loose, sticking, or cosmetically worn, replacement may be cheaper than changing a complete lock system. A basic interior knob costs $5-$20, and a compatible full replacement can usually be done without changing the door. If only the latch or a screw is causing the problem, a small repair may cost $5-$20 in parts, although a service visit can make a minor repair cost $75-$150.
For an exterior door, changing a keyed knob may mean receiving new keys that do not match the existing deadbolt. Rekeying a cylinder can cost roughly $15-$40 per lock when handled during a locksmith visit; a separate trip can bring the total service charge to $75-$150 or more. Replacing both knob and deadbolt with a keyed-alike set may cost $35-$100 for budget hardware, before labor.
Repair is less attractive when the knob has a broken internal mechanism, the latch no longer retracts, or the finish and hardware are badly damaged. Conversely, a complete replacement is unnecessary when the issue is simply a loose mounting screw. Compare the repair charge with the complete hardware price, while accounting for any visit minimum.
What Does Professional Door Knob Installation Include?
A straightforward installation involves removing the old set, fitting the latch, aligning the two knob halves, tightening the screws, and checking that the latch moves freely. For an experienced installer, a standard swap commonly takes 15-30 minutes per door. A homeowner replacing several identical knobs may spend 20-45 minutes per door, particularly when sorting parts and adjusting alignment.
Professional labor for several doors often works out to $20-$45 per knob, excluding hardware, when the work is bundled into one visit. A one-knob appointment may instead carry a $75-$150 minimum. Rates vary by market, travel time, and whether the provider is a handyman, locksmith, or general contractor. Lock rekeying or diagnosing an exterior lock can add time and a separate charge.
Extra labor may be needed if the door is warped, the latch opening is damaged, the strike plate is misaligned, or old screws have stripped. Adjusting a strike plate may add $10-$40 per door; repairing damaged wood can cost more. Cutting a new bore is a different scope from swapping a standard knob and may require specialized tools or a door repair professional.
Before approving a quote, confirm whether the provider supplies hardware or installs customer-supplied sets. Some installers will not warranty inexpensive customer-provided parts, and missing screws or an incompatible latch can cause a second trip. For a multi-door job, request one total for labor and a separate per-door hardware allowance.
Three Door Knob Orders With Different Budgets
A low-cost closet update might cover four passage knobs at $8 each, with no labor because the homeowner does the swaps. Hardware totals $32; adding four strike plates at $4 each brings the materials bill to $48. This assumes all four doors already have standard holes and working latches.
A six-door interior refresh might use four passage knobs at $12 and two privacy knobs at $16, for $80 in hardware. A handyman charging $30 per door adds $180, making the estimated total $260, or about $43 per door. If the installer has a $100 minimum, the quoted labor for a small job could be lower or higher depending on the agreed scope.
An exterior entry replacement might include one keyed knob at $25, a separate deadbolt at $30, and $10 in screws or strike hardware. A locksmith or handyman could charge $75-$125 for a visit and installation, producing a total around $140-$190. Rekeying or matching other locks may add another $15-$40 per cylinder.
These examples show why the lowest listed knob price does not always produce the lowest project price. Pack discounts matter for multiple identical doors, while labor minimums matter most for a single door. Compare totals for the same door count, lock functions, and installation scope.
Where Low-Cost Door Knobs Run Cheaper Across the U.S.
Retail hardware prices are relatively consistent among national chains and online sellers, but local availability, shipping, and sales can shift the total. Contractor labor varies more. A basic installation may run 10%-25% below national-average labor in lower-cost rural and Midwestern markets, while dense coastal cities and high-cost metros may run 15%-40% above it.
Travel charges can narrow the difference in rural areas, especially for one or two doors. In a city, a higher hourly rate may be offset when the installer can complete several nearby jobs or when multiple knobs are replaced in one visit. A six-door project is therefore more likely to benefit from bundled labor than a single replacement.
Online ordering can reduce the hardware price, but shipping, returns, and waiting for a missing or incompatible part can add expense. Local stores may cost more per set but make it easier to compare finishes and return an item quickly. Use the installed total, not the shelf price, when comparing quotes across locations.
How to Keep a Multi-Door Knob Upgrade Under Budget
First, list each door by function: passage, privacy, or keyed. Avoid buying keyed locks for interior rooms that only need privacy, and do not assume a keyed knob replaces a deadbolt on an exterior entry. Buying the right type prevents both unnecessary upgrades and return costs.
Measure door thickness and check the backset before ordering. Standard sets commonly fit a 1 3/8-1 3/4-inch door with a 2 3/8- or 2 3/4-inch backset, but the package specifications control. Confirm that each set includes the latch and both knob sides. Buying a multipack can reduce the unit price, but only if the pack contains the needed lock functions.
Group replacements into one appointment and prepare the doors by removing obstructions and identifying any broken latches. Ask contractors to quote the same number of doors and specify whether strike plate adjustments, old-hardware disposal, and rekeying are included. Compare the labor minimum as well as the per-door rate.
Choose a common finish and standard hardware where appearance and use allow. Paying extra for a premium finish or decorative design across every door can add $10-$30 per knob without improving function. Keep higher-priced choices for doors where durability, security, or a specific look matters most. The clearest savings usually come from correct sizing, matching pack quantities to the door list, and bundling labor.