You typed this into Google because you got a postcard from a roofer offering a free inspection, or your insurance carrier sent a letter about the age of your roof, or a neighbor's house got a tear-off last month and the truck signs were three different companies in four weeks. We are going to tell you what 2026 Brentwood roof replacement actually costs, what the insurer math really is, and what to look for before you sign anything.
Brentwood is not Nashville. It is the City of Brentwood, an independent municipality in Williamson County, with its own city hall at 5211 Maryland Way and its own permit office. The roofing permit you need is a Brentwood permit, not a Davidson County or Metro Nashville permit. That sentence is where the "free roof" national chains lose ten days of your schedule when they file with the wrong county.
The honest 2026 answer up front
For a typical Brentwood home (roughly 22 to 32 squares of roof area, single-story or two-story, asphalt shingle existing):
- Architectural asphalt, standard-grade: $14,000 to $22,000
- Impact-rated Class 4 shingle: $18,000 to $28,000
- Standing-seam metal: $32,000 to $58,000
Brentwood pricing tracks Williamson County labor rates, which run roughly 8 to 14 percent above the Tennessee statewide average. The largest single variable is roof complexity (number of valleys, hips, dormers, and chimney flashings), not square footage. A simple gable roof at 28 squares costs less than a cut-up roof at 22 squares with three dormers and two chimneys.
The five things that move price inside each tier
1. Roof complexity and pitch
A simple gable roof with one ridge and two slopes costs less per square than a cut-up roof with multiple valleys, hips, and dormers. Each valley adds material waste and labor. Each chimney flashing adds labor and material. Steep pitches (above 8/12) add safety harness time and reduce daily production.
A 26-square simple gable in Brentwood typically runs $15,200 in standard asphalt. The same 26 squares spread across a cut-up roof with three valleys, two dormers, and one chimney typically runs $19,800. The square count did not change. The labor and waste did.
2. Tear-off versus overlay
Brentwood permits do not allow a third layer in most cases. If you have one layer of shingles, an overlay is technically possible but rarely the right choice; it traps heat, hides decking damage, and reduces future inspection visibility. Full tear-off to decking is the standard. Tear-off adds $1,200 to $2,800 over a roof-over depending on layer count and disposal.
The honest contractor quotes tear-off. The cheap quote that wins on price is often a roof-over that fails an insurer inspection within two years.
3. Decking replacement
Williamson County homes built between 1980 and 2005 often have OSB or 7/16 plywood decking. Hail damage, prior leaks, and ice-dam saturation can require partial decking replacement during tear-off. Expect $65 to $95 per sheet of replaced decking in 2026, with a typical Brentwood tear-off revealing 2 to 8 sheets of replacement.
A quote that does not include a per-sheet decking allowance is hiding the change-order math. Ask for the rate.
4. Underlayment, ice-and-water, and ventilation
Tennessee code requires synthetic underlayment under shingle assemblies. Ice-and-water shield is required at eaves, valleys, and penetrations. Ridge ventilation must be sized for the attic volume. A quote that omits these line items is either eating the cost (acceptable on a lump-sum contract) or skipping them (not acceptable).
The shingle warranty is voided without manufacturer-approved underlayment and ventilation. Owens Corning, GAF, and CertainTeed all require their own systems for the full warranty.
5. Permit fees and inspections
City of Brentwood residential roofing permit fees run $185 to $440 in 2026, plus a $65 to $110 plan review or inspection fee. The permit is required for full tear-off; like-for-like repairs of less than 25 percent of the roof area typically do not require a permit. Brentwood inspectors require tear-off inspection before underlayment is installed; ride-along inspection is common.
A national chain that files Nashville/Davidson permits by reflex will get red-tagged in Brentwood. The five-to-ten-day refile delay is the difference between a Friday completion and a Thursday-of-next-week completion.
Cost comparison: DIY, General Contractor, Our Partner
| Path | All-in cost | Calendar time | Warranty + permit risk |
|---|---|---|---|
| DIY (homeowner pulls permit, hires crew) | $9,500–$14,500 (materials + day labor) | 3–6 weeks | High. Shingle warranty often voided without certified installer. |
| Average storm-chaser GC (postcard inspection) | $11,500–$17,500 (looks cheap) | 2–4 weeks, often skips permit | High. Often files wrong county. No long-term warranty. |
| Brentwood-licensed roofer (our partner) | $14,000–$22,000 (architectural asphalt, full tear-off) | 1–2 weeks from contract | Low. Brentwood-permitted, manufacturer-certified, full warranty. |
What homeowners on Franklin, Concord, and Hillsboro Pike actually paid
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Start Project MatchA 1996 brick two-story on Franklin Road, 28 squares, simple gable with one chimney. Architectural asphalt tear-off after a March 2024 hail event. Insurance covered $14,800 of $16,200 total. Decking replacement: 4 sheets. Final close, owner out of pocket: $2,140 plus the deductible.
A 2003 home on Concord Road, 31 squares, complex roof with two dormers and a valley over the garage. Class 4 impact-rated shingle upgrade after a 2024 insurance carrier letter about ACV-only at year ten. Total cost: $24,600. Insurance covered $19,200 (RCV claim with depreciation refund after upgrade). Out of pocket: $5,400.
A 1989 home on Hillsboro Pike, 26 squares, cedar shake to standing-seam metal conversion. Owner paid for the upgrade outright; insurance did not cover the betterment. Total cost: $48,800. Project ran 9 working days from tear-off start to final inspection.
What the lead-magnet PDF covers
We publish a free 11-page Brentwood roof replacement guide with the insurance claim timeline (ACV versus RCV math, depreciation refund rules, supplement process), Williamson County hail event log 2019 to 2026, the line-item template (10 categories), and a sample fixed-price contract with named exceptions.
Insurance reality in Williamson County 2026
The largest single variable in Brentwood roofing is not the contractor. It is the insurer. Williamson County sits in the top quartile of US hail frequency, and the carriers that write here have moved aggressively to ACV-only policies on roofs above ten years of age.
What ACV-only means in practice: if your roof is 11 years old and a hailstorm totals it, the carrier pays the depreciated value, not the replacement value. On a $18,000 roof at 11 years, depreciation can run 50 to 65 percent. The carrier check arrives at $6,300 to $9,000. The replacement still costs $18,000.
Three carrier actions to know in 2026:
Roof age inspection at renewal. Several Williamson County carriers now do drive-by or aerial roof inspections at policy renewal. A roof past 12 years and showing wear gets non-renewed or moved to ACV.
Impact-rated shingle discount. Class 4 impact-rated shingles (UL 2218) qualify for a 10 to 20 percent annual premium discount with most Tennessee carriers. The upgrade pays back over 4 to 6 years on premium savings alone.
Documented hail-event response. If your neighborhood had a documented hail event in the last 12 months, the carrier may accept a claim on a borderline-age roof. Outside that window, claims on roofs above 10 years face heavy scrutiny.
Timeline reality, in working days
- Standard asphalt tear-off and replacement: 2 to 4 working days for crew on site, 1 day for inspection
- Impact-rated upgrade: 3 to 5 working days
- Standing-seam metal: 5 to 9 working days
Add 5 to 10 calendar days for permit issuance at City of Brentwood. Add 14 to 60 calendar days for insurance claim processing if a storm claim is involved.
How to read a Brentwood roofing quote
The line items that should appear on every honest Brentwood roof replacement quote:
- Tear-off and disposal (with layer count)
- Decking inspection and per-sheet replacement allowance (with rate)
- Ice-and-water shield at eaves, valleys, and penetrations
- Synthetic underlayment (with brand)
- Drip edge and starter strip
- Shingles (with brand, profile, color, warranty)
- Ridge cap and ventilation (with CFM calculation)
- Step and counter flashing at chimneys and walls
- Pipe boots and roof penetration seals
- City of Brentwood permit and inspection fee
- Final cleanup and magnetic nail sweep
A quote that reads "complete roof replacement: $16,500" with no breakdown cannot be compared to any other quote. Ask for the itemized version.
When you are ready
Use our form above for a 48-hour Brentwood roof inspection. We file Brentwood city permits weekly. We work with all major Tennessee carriers on storm claims. We do not run a sales floor.
For an editorial view on how Tennessee insurers now drive replacement timing, our partner Renology published a long-form on Brentwood roofing realities at therenology.com.
Definitive answer
The average Brentwood roof replacement in 2026 closes between $14,000 and $22,000 for architectural asphalt with full tear-off, $18,000 to $28,000 for impact-rated Class 4, and $32,000 to $58,000 for standing-seam metal. The City of Brentwood requires a permit for full tear-off (filed at 5211 Maryland Way), separate from Williamson County or Metro Nashville. Williamson County insurers have moved to ACV-only on roofs above 10 years of age; Class 4 impact-rated shingles qualify for a 10 to 20 percent annual premium discount with most Tennessee carriers.
Sources & methodology
How Golden Yards builds this guide
Golden Yards reviews public permit and code signals, material pricing, climate and site constraints, contractor quote patterns, comparable projects, the Golden Yards Cost Index, and the Golden Yards Methodology. Cost references are planning ranges, not fixed bids.
- Benchmarked against the Golden Yards Cost Index and related project guides.
- Reviewed for California climate, water, fire, drainage, access, and permit context.
- Commercial Project Match is separate from editorial cost guidance.
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