Windows · Brentwood, TN
How much does wood and fiberglass window replacement cost in Brentwood, TN? (2026)
In Brentwood, wood and fiberglass window replacement runs $9,800–$24,350, with most paying around $17,100 — about 2% below the national average. Whole-home window replacement with premium wood or fiberglass windows — higher cost, better looks and longevity.
Updated June 2026 · Localized estimate, not a quote
Most homeowners pay around $17,100
- Typical cost
- $17,100
- Labor vs US
- −3%
- Climate
- Mixed
- Local permit
- $125
Refine your estimate
Tune it to your home to narrow the wood and fiberglass window replacement range.
Key takeaways for Brentwood
- A wood and fiberglass window replacement in Brentwood typically runs $9,800–$24,350, with most homeowners paying about $17,100 — about 2% below the national average.
- Local labor in Brentwood is −3% relative to the national average, which is what pushes this estimate away from the countrywide number.
- The estimate already covers the Windows permit — roughly $125 in Brentwood.
- 30 to 50 years is the usual service life, so budget for the next one before it fails.
- Time it right and you can save 5–15%: the best window to book is Late fall and winter.
- Don't price this without checking the rebates section below — federal 25C/25D credits and local utility incentives can bring the net cost down.
What goes into the price in Brentwood
A typical Brentwood wood and fiberglass window replacement of $17,100 breaks down roughly like this — materials priced near the national level, labor set by local rates.
| Line item | Brentwood 2026 range |
|---|---|
| Materials & equipmentThe unit and materials — largely the same cost no matter which city you're in. | $4,350 – $10,900 |
| Labor & installationLabor to remove the old system and install the new one — this is where your city's wage index shows up. | $5,325 – $13,325 |
| Permit & feesLocal building-department fee for Windows work here. | $125 |
| Total installed cost | $9,800 – $24,350 |
Split from the Brentwood estimate using a 55% local-labor share; line items sum to the total.
Why wood and fiberglass window replacement costs what it does in Brentwood
- Brentwood's labor rates sit about 3% lower than the national average (based on price levels for the Nashville-Davidson--Murfreesboro--Franklin metro area), pushing the price down.
- Brentwood's Windows permit runs roughly $125, which is already part of the number above.
Wood & Fiberglass Window Replacement cost by number of windows in Brentwood
Wood and fiberglass windows are a premium upgrade — figure roughly $800–$2,500 per window installed depending on material, size, and finish. Cost scales with the number of openings, and wood typically runs higher than fiberglass.
| number of windows | Brentwood 2026 range |
|---|---|
| 5 windows | $4,500 – $10,800 |
| 10 windows | $8,850 – $19,500 |
| 15 windows | $13,200 – $27,250 |
| 20 windows | $17,550 – $35,000 |
| 25+ windows (whole home) | $21,450 – $43,750 |
National size ranges localized to Brentwood labor and climate.
Wood & Fiberglass Window Replacement cost by type in Brentwood
| Fiberglass | $9,850 – $21,450 |
| Composite | $10,800 – $22,450 |
| Aluminum-clad wood | $12,750 – $26,300 |
| Solid wood | $13,700 – $29,250 |
Adjusted to Brentwood from national type-level ranges.
Wood & Fiberglass Window Replacement cost by efficiency in Brentwood
Frame material sets the price and the look. Fiberglass is durable and low-maintenance; wood (often clad in aluminum outside) offers the richest appearance but costs more. The glass package adds on top. Prices are per window installed.
| Fiberglass frame (double-pane low-E)Strong, stable, very low maintenance | $700 – $1,500 |
| Wood frame / aluminum-clad woodPremium look; needs periodic finishing | $1,100 – $2,250 |
| Triple-pane premium (wood or fiberglass)Top efficiency and sound control | $1,500 – $2,850 |
Labor vs. materials in Brentwood
Install crew, removal, permit & startup — the part Brentwood rates move most.
Equipment & materials — priced closer to the national level.
Split based on a typical $17,100 Brentwood project; your mix varies with scope.
Skilled installers in the Nashville-Davidson--Murfreesboro--Franklin area earn about $29.4/hr (6% below the US average, per BLS metro wage data) — the local wage is what moves the labor half of your wood and fiberglass window replacement cost.
How we estimate it
| National range | $10,000 – $25,000 |
| Brentwood labor adjustment | ×0.97 |
| mixed climate factor | ×1 |
| Local permit | +$125 |
| Brentwood estimate | $9,800 – $24,350 |
Promo prices vs. the real cost
Before you anchor on an advertised per-window rate, check what it leaves out of the installed price:
- "From $189/window" teaserinstall, trim & disposal usually extra
- Financing offers$0 down · 0% APR, 12–60 mo
- "Buy 2, get 2" / BOGO dealsdiscount is off an inflated list price
- Free in-home estimate$0 — it's a sales visit
Additional wood and fiberglass window replacement costs to budget for
Only a handful of these will touch your total. Which ones depend on what's already in place and how the crew has to reach it.
| Old window removal & disposalPer window; usually bundled into the quote | $30 – $75 |
| Full-frame (vs. insert/pocket) replacementPer window; standard for wood to flash properly | $150 – $450 |
| Rotted sill / frame repairPer opening, found after removal | $200 – $800 |
| Custom or non-standard size / shapeBay, bow, arched, or oversized units cost more | $200 – $1,000 |
| Interior/exterior trim, casing & stainingPer window; wood often gets a stained finish | $100 – $400 |
Typical national add-on ranges; confirm locally during your quote.
What's included
- Installation, flashing and sealing
- Old window removal
- Interior and exterior trim
- Premium wood or fiberglass windows
What affects the cost
- Custom sizing and shapes
- Historic or architectural matching
- Material (fiberglass vs solid wood vs clad)
- Number of windows
Ways to save on wood and fiberglass window replacement in Brentwood
- Bundle the whole house in one job
- Fiberglass costs less than wood with similar looks
- Check efficiency rebates
- Use premium only where visible, vinyl elsewhere
How long does wood and fiberglass window replacement last in Brentwood?
Fiberglass lasts 30–50+ years; well-maintained wood can match it, but neglected wood rots far sooner.
Fiberglass is nearly maintenance-free. Wood (and the exterior of clad units) needs periodic repainting or re-staining and seal checks.
Signs you need wood and fiberglass window replacement in Brentwood
- Windows stick, swell, or are hard to open and close
- Fog or condensation appears between the panes (the seal has failed)
- Wood frames show rot, soft spots, peeling paint, or water staining
- You feel drafts near the window when it's shut
- They're single-pane originals and energy bills are high
- Visible warping, cracking, or daylight around the sash
- Outside noise comes through easily
Repair or replace in Brentwood?
Repair if…
- The wood frame is structurally sound and just needs refinishing or minor rot repair
- Only the seal, weatherstripping, or hardware has failed
- It's a historic or character window worth restoring
- The unit is under warranty
Replace if…
- Condensation is sealed between the panes (the IGU seal is gone)
- Rot has spread into the structural frame or sill
- They're single-pane and you want major energy savings
- Several windows are failing — bulk replacement lowers per-window cost
Climate-zone spec
What window rating you need in Brentwood, TN
Brentwood, TN sits in a mixed climate — the North-Central / South-Central ENERGY STAR window zone. To qualify for ENERGY STAR (v7.0), replacement windows here should meet:
Mixed climates need balance: a low U-factor for winter plus a controlled SHGC so summer sun doesn't overheat the home. Requirements tighten as you move south.
Thresholds from ENERGY STAR Residential Windows v7.0. Costadia groups cities into cold / mixed / hot bands — for your exact county's zone, use the ENERGY STAR Climate Zone Finder. Source.
Rebates & incentives
The federal window tax credit is gone for 2026, but ENERGY STAR windows can still earn utility rebates in some areas — and the real long-run savings come from lower heating and cooling bills.
- The federal 25C tax credit (up to $600/yr for ENERGY STAR Most Efficient windows) ended December 31, 2025 under the One Big Beautiful Bill Act — not available for 2026.
- Some utilities still rebate high-efficiency windows — real examples include Mass Save (~$75/window on single-pane replacements) and Puget Sound Energy (up to $100/window, more for income-qualified, through 2026).
- There is no federal HEAR rebate for windows (that program targets electrification equipment like heat pumps), so utility and state programs are the path — check the DSIRE database.
- The durable savings are on your energy bills: right-rated windows for your climate zone cut heating/cooling costs every year (see the climate-zone spec above).
Verified July 2026. Program budgets and windows change fast — confirm current amounts and eligibility with your utility and the DSIRE database. Costadia does not administer these programs.
Rebates & tax credits
The federal 25C window tax credit (30%, up to $600) ended December 31, 2025 and no longer applies to 2026 installs. ENERGY STAR Most Efficient wood or fiberglass windows still pay back through lower energy bills, and many utilities and states offer their own rebates — check the DSIRE database.
Cheapest time for wood and fiberglass window replacement in Brentwood
Why fall and winter save money: installers are hungry for work and manufacturers are running promotions, and those two discounts happen to overlap in the same off-season window.
Why wood and fiberglass window replacement quotes vary — and how to compare them fairly
Price differences on an identical job trace back to the assumptions each contractor made; understand those and the 'expensive' bid often turns out fair.
Why a quote looks high (or low)
- Glass package (double vs. triple pane, low-E, gas fill) swings the price.
- Full-frame replacement costs more than an insert (pocket) install — make sure bids match.
- Frame material — vinyl, wood, fiberglass — is a big driver.
Get an apples-to-apples bid
- Match the glass package and ENERGY STAR rating across quotes.
- Check warranties on frame, glass seal and labor separately.
- Compare frame material on equal terms.
- Confirm disposal, trim and flashing are included.
Questions to ask Brentwood Windows pros
Before you pick, make each contractor answer the same things — gaps in their replies tell you as much as the price.
- 1Is this a full-frame replacement or an insert (pocket) install?
- 2What's the glass package — double vs. triple pane, low-E coating, gas fill?
- 3Are disposal, trim, and exterior caulking/flashing included?
- 4Are the windows ENERGY STAR rated for my climate zone?
- 5What's the warranty on the frame, glass seal, and the installation labor?
Wood & Fiberglass Window Replacement in Brentwood
How much does wood and fiberglass window replacement cost in Brentwood, TN?
Most Brentwood homeowners pay around $17,100 for wood and fiberglass window replacement, though 2026 quotes stretch from $9,800 to $24,350. Local labor, the mixed climate and permit fees are all baked into that number.
Is wood and fiberglass window replacement more expensive in Brentwood than average?
Why the gap? Brentwood prices about 2% lower than the national average, and local labor — indexed at 0.97 against the US average — does most of the work. (a local Windows permit tacks on about $125).
Do I need a permit for wood and fiberglass window replacement in Brentwood?
A Windows permit is standard in Brentwood for this kind of work, at roughly $125. You won't need to add it on top of the estimate above — it's already there.
What affects wood and fiberglass window replacement cost the most?
Worth knowing first: whole-home window replacement with premium wood or fiberglass windows — higher cost, better looks and longevity. Price swings mostly come down to equipment or material grade, the size and complexity of the home, local labor, and the mixed climate zone.
How much should new windows really cost you?
Frame material, glass package and install type decide the price. Our editors on what's worth paying for.
The efficiency case
In extreme climates, triple-pane or premium low-E/gas-fill glass pays back in comfort and bills — and ENERGY STAR units may qualify for rebates. Spend on the glass package before the frame upgrade.
The value case
For a whole-home replacement on a fixed budget, vinyl frames with double-pane low-E glass capture nearly all the comfort and efficiency gains at the lowest entry point. Stepping up to fiberglass or triple glazing buys diminishing returns most homeowners never actually notice.
The install case
A perfect window installed badly leaks and fails. Full-frame replacement with proper flashing beats a cheap pocket insert in a rotted opening — match the install method to your home's condition, not just the price.
Windows reward homeowners who spend deliberately: glass tuned to the climate, a vinyl frame by default, and an installer who won't skip flashing. Trim the frame line before you touch either of the other two.
Editorial analysis by Serhat Özçelik, reviewed by Costadia Editorial. These are our own cost perspectives, not third-party endorsements.
How we calculated this estimate
We start with 2026 national wood and fiberglass window replacement ranges compiled from contractor-pricing sources (Angi, HomeGuide, Fixr and EnergySage averages), then localize them to Brentwood using the BLS metro wage data labor index (×0.97 here), the IECC mixed-climate factor (×1) and a typical local permit fee (≈$125). Federal incentive details reference the IRS Inflation Reduction Act (25C/25D) and DSIRE.
This is a planning estimate, not a quote.Actual prices vary with your home's condition, equipment grade and contractor — always confirm with licensed local pros before budgeting.
References & data sources
Our Brentwood wood and fiberglass window replacement estimate is built from these primary, mostly government sources — not a single aggregator.
- Occupational Employment & Wage Statistics (metro wages) — U.S. Bureau of Labor Statistics.Metro-level trade wages behind each city's labor index.
- Regional Price Parities (state & metro) — U.S. Bureau of Economic Analysis.Regional price levels used where metro wage data is unavailable.
- IECC Climate Zones — U.S. DOE — Building Energy Codes Program.Climate-zone factors applied to weather-sensitive projects.
- Home Energy Tax Credits (25C / 25D) — Internal Revenue Service.Federal rebate and tax-credit figures for eligible upgrades.
- Database of State Incentives for Renewables & Efficiency — DSIRE — NC State University.State and utility incentive programs by ZIP code.
Wood and fiberglass window replacement alternatives in Brentwood
Homeowners in Brentwood often pair this with
A wood and fiberglass window replacement rarely happens in isolation — these projects commonly come up alongside it.
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