How Much Does It Cost to Replace Window Locks? [2025 Data]
The cost to replace window locks ranges from $50 to $500 per lock, with most homeowners paying between $130 and $220. Prices depend on lock type, labor, and window accessibility.
Replacing window locks is a direct way to boost your home’s security and peace of mind.
The main cost factors include the type of lock, labor rates, and the ease of accessing the window.
Investing in upgraded locks can increase your home’s value and offer insurance benefits.
Standard locks start at $10, while smart models can run up to $200.
Choosing standard locks and replacing several at once can help you save on overall project costs.
This article was created using automation technology and thoroughly fact-checked and edited by an Angi Editor in accordance with our AI policy.
The cost to replace window locks averages $300 per lock, with most ranging from $130 to $220. Prices depend on the lock type, labor rates, and the accessibility of each window. This project helps maintain secure, smoothly operating window locks that protect your home and offer peace of mind. Let’s break down what you need to know, so you can budget with confidence.
Cost to Replace Window Locks by Size
The number of window locks you need to replace has a direct impact on your total project cost. Replacing a single lock is the most straightforward, but swapping out locks on every window often means higher overall expense—with the potential for bulk discounts from some pros. Many homeowners choose to upgrade all first-floor windows for security, while others focus on worn or malfunctioning locks only.
Lock size also matters. Standard-sized locks are the most affordable, while oversized or custom locks cost more due to the need for special ordering and installation. If your windows have unique shapes or require specialty hardware, expect the price per lock to rise.
| Number of Locks | Average Cost per Lock |
|---|---|
| 1 | $75–$150 |
| 3 | $70–$140 |
| 8 | $65–$130 |
| 15+ | $60–$120 |
Window Lock Replacement Cost by Type
Window locks come in a variety of styles, each affecting cost, security, and appearance. Sash locks are common for double-hung windows, casement locks suit crank-out styles, and sliding window locks fit horizontal sliders. You’ll also find keyed locks, smart locks, and multi-point locks for added security. Materials range from budget-friendly plastic or zinc to durable steel or brass, with finishes to match your décor.
Each lock type offers pros and cons and is suited for certain types of windows. Sash and casement locks are simple and affordable, but keyed or smart locks offer higher security. Some locks blend seamlessly with window frames, while others stand out as a design feature.
| Lock Type | Average Cost per Lock | Pros | Cons |
|---|---|---|---|
| Sash lock | $10–$30 | Affordable, easy to install | Basic security |
| Casement lock | $15–$40 | Good fit for crank windows | Limited to certain window types |
| Sliding lock | $10–$35 | Simple, fits sliders | Less secure than keyed options |
| Keyed lock | $25–$60 | Extra security, insurance-compliant | Keys can be lost |
| Smart lock | $80–$200 | Remote access, integrates with systems | Requires batteries, higher cost |
| Multi-point lock | $60–$120 | Maximum security, durable | Complex install, higher labor cost |
Window Lock Cost by Location
Where you live plays a big role in the total cost to replace window locks. Labor rates are higher in urban and high-cost-of-living areas. Regional trends can also influence hardware prices and availability. Within your home, windows on upper floors or in difficult-to-reach spots cost more to service due to the extra safety equipment and time required.
Basement or egress windows may require special security hardware, which can increase costs. Always consider location when budgeting, especially if your home has unique or hard-to-access windows.
Window Locks Replacement Cost Factors
Several factors shape the final price you’ll pay for window lock replacement. Let’s break down the most important ones.
Labor
You can hire a handyperson, locksmith, or window contractor to replace window locks. Handymen charge a minimum service fee, plus hourly rates from $50 to $120, depending on your region.
Replacing a lock takes 15 to 30 minutes, but complex projects or after-hours calls will increase labor costs. Urban markets and emergency service requests also drive prices higher.
Permits
Permits are often not needed for standard window lock replacement. However, if you live in a historic district, own a multifamily unit, or are upgrading to high-security locks, local regulations may apply. Permit fees, when required, range from $25 to $100. Always check with your local building department to confirm requirements.
Additional Features
Upgrading to keyed, smart, or high-security locks adds to your total. Smart locks and sensors cost more but offer remote access and integration with home security systems. Child safety features, custom finishes, or matching hardware to your existing décor also increase costs. These extras can make your home safer and more convenient.
Installation Add-Ons
Several factors can cause labor rates to rise when replacing window locks:
Complex installations on older or damaged windows require more time and materials.
Hard-to-reach windows, such as those on upper floors, may need ladders or scaffolding.
Removing old locks or repairing window frames adds cost.
Post-installation cleanup and disposal are sometimes billed separately.
Custom solutions may involve consultation or design fees.
Security or insurance inspections, if needed, are an extra expense.
Additional Costs to Consider
When budgeting for the cost to replace window locks, be sure to account for ongoing and one-time extras:
Operating Costs
Smart or electronic locks require batteries, which are replaced annually for $5 to $15 per lock. If you connect locks to a security monitoring service, expect monthly fees of $10 to $40.
Taxes
Don’t forget sales tax on hardware, which varies by state from 5% to 10%. Local taxes or fees may also apply to installation services, depending on your area.
Insurance
Installing new window locks can sometimes lower your homeowners' insurance premium, especially if you choose high-security or insurance-approved locks. Some insurers require specific lock types for coverage or discounts, so check your policy before you buy.
DIY Window Lock Replacement vs. Hiring a Pro
Replacing window locks yourself can save on labor, but it comes with its own challenges. A DIY project costs $10 to $60 per lock for materials, plus any tools you need (screwdrivers, drills, tape measure). You’ll save on professional fees, but risk mistakes that could affect security or void warranties.
DIYers should have basic hand tools, patience, and a steady hand. Safety is key—especially for upper floors or large, heavy windows. Most locks take 30 minutes or less for a skilled DIYer, while pros work more quickly and efficiently.
Risks include damaging windows, improper installation, or not meeting insurance requirements. If you have specialty windows, custom hardware, or want advanced security features, it’s best to hire a local window repair pro.
Window Locks Replacement vs. Repair
It’s not always necessary to replace a window lock—sometimes a repair does the job. Minor issues like loose screws or sticking mechanisms can often be fixed for $20 to $60, including parts and labor. If a lock is broken, outdated, or not up to code, replacing it is the better investment.
If repair costs exceed 50% of the replacement cost, consider replacing the lock for better value. Warranty status, lock age, and visible wear are also important factors. Replacing locks improves security, keeps your insurance valid, and ensures your windows are safe to use.
Do New Window Locks Add Value to Your Home?
Investing in new window locks brings a solid return—mainly through improved safety and peace of mind. Insurance companies sometimes offer discounts for upgraded locks, and buyers see secure windows as a plus when valuing a home.
New locks also make daily life easier, especially with features like smart technology or universal design. Upgraded finishes and hardware can boost curb appeal and tie together your home’s style. While not as dramatic as an alarm system, replacing locks is a simple way to enhance home security.
Tips to Reduce Window Lock Replacement Costs
To keep costs down when replacing window locks, consider the following tips:
Obtain multiple quotes from qualified professionals.
Choose standard lock types and finishes for better pricing.
Replace multiple locks at once to save on labor fees.
Consider DIY for simple lock replacements if skilled.
Schedule work during off-peak seasons for potential discounts.
Maintain locks regularly to extend their lifespan.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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