How Much Does It Cost To Install Window Trim in 2025?

This article was updated using automation technology and thoroughly reviewed for accuracy by HomeAdvisor Editor Ryan Noonan.

Expect to spend an average of $900 to install window trim. Most projects run between {AvgRangeMidCost} and $1,200, with smaller projects going as low as $350 and larger or more complex trim installs reaching $1,600. Besides framing your windows with style, quality trim seals out drafts and moisture, so build the cost into your budget and partner with a qualified pro for a crisp, long-lasting finish.

Window Trim Installation Cost Factors

Several important factors affect your final cost. From labor rates and trim style to property-specific requirements, understanding what goes into the quote can help you plan more effectively.

If you're trimming several windows at once, ask your contractor about bundle pricing, which may lower the per-window rate. Specialty and curved windows almost always raise the price due to custom cuts and complex installation techniques.

Average Window Trim Costs by Window Type

To calculate how much trim you’ll need, measure the full perimeter of each window (all four sides) and multiply by the total number of windows. Accurate measurements help avoid material shortages, delays, and extra labor fees.

Labor

To install trim, hire a local carpenter or local general contractor. Labor charges vary by location, experience, and the method of pricing—either per hour or per linear foot. Urban areas have higher labor costs. Projects involving hard-to-reach or multi-story windows, or complex trim designs tend to take longer and cost more. For exterior trim that matches your siding, consider hiring a siding installer near you. 

Material

Trim material significantly impacts the project cost. Some materials are suitable only for indoor use, while others work for exterior trim. Always follow the manufacturer's recommendations regarding usage to ensure durability and compliance.

Permits

While most interior trim work doesn’t need a permit, exterior projects might—especially in historic neighborhoods or HOAs. Permit fees can range from $25 to $150, so always verify local requirements before scheduling the job.

Upgrades and Add-Ons

Adding decorative trim or other enhancements increases the price. Expect to pay more if your project includes:

• Crown molding, rosettes, or custom casings

• Built-in sills or aprons

• Professional finishing (painting/staining)

• Exterior sealing or caulking for weatherproofing

• Moisture barrier or insulation behind the trim

Additional Costs

Beyond materials and installation, several other aspects can influence your total project cost:

• Window accessibility: Second-story or attic windows may require the use of ladders or scaffolding.

• Old trim removal: Removing existing trim can cost between $50 and $150, depending on the complexity.

• Site prep and cleanup: Some contractors charge for wall prep, debris disposal, or cleaning.

• Design consultation: Complex trim projects might involve design fees.

• Inspection requirements: Exterior work may need to pass inspection, especially in regulated areas.

• Sales tax: Most states tax materials and labor at rates ranging from 5% to 10%.

• Homeowners' insurance: Coverage may apply if the trim is damaged in a covered event. Upgrades usually don’t affect your premium, but check with your provider.

• Extended warranties: Many manufacturers or pros offer warranties for materials or labor. Basic warranties may be included, while extended coverage often costs extra.

Budgeting for Window Trim Installation

Planning ahead can help you stay within budget while still getting high-quality results. Use these tips to keep costs manageable:

• Request multiple estimates to compare rates and avoid overpaying for labor.

• Select basic trim styles and materials to keep expenses down without sacrificing appearance.

• DIY the finishing touches, such as painting or staining, to reduce labor costs.

• Schedule your project during slower seasons when contractors may offer better deals.

• Handle the removal of old trim yourself if you're comfortable with tools and demolition.

• Buy materials in bulk if you’re trimming several windows to take advantage of volume pricing.

• Stay on top of maintenance to prevent expensive repairs or premature replacement.

DIY vs. Hiring a Pro for Window Trim Installation

Installing window trim yourself can save on labor, but it requires skill, time, and the right tools. DIYers need a saw, nail gun, level, caulk, and finishing materials, and should expect to spend hours per window. Mistakes such as uneven cuts or poor sealing can harm efficiency and reduce curb appeal. Hiring a professional ensures a clean, accurate finish, especially for intricate styles or exterior work. While it costs more upfront, a pro can prevent costly do-overs. Choose DIY for simple interiors if you're experienced, but consider a professional carpenter for complex or high-visibility projects.

How HomeAdvisor Gets Its Cost Data

No place is more important than your home, which is why HomeAdvisor connects homeowners with local pros to transform their houses into homes they love. To help homeowners prepare for their next project, HomeAdvisor provides readers with accurate cost data and follows strict editorial guidelines. After a project is complete, we survey real customers about the costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from 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.