Roof leak repair cost:
what it costs now, and what it costs if you wait
HOW MUCH DOES IT COST TO REPAIR A ROOF LEAK?
Most roof leaks cost $150 to $1,500 to fix, and published averages sit around $800–$900. A leak left for months costs more, because the ceiling, insulation and sometimes mold have to be dealt with too.
A real example: what a "small" roof leak turned into
This is a real leak in a top-floor apartment, right under the roof. It started with a few dark spots on the sloped ceiling. Then the paint began to bubble. Then the wall near the window felt damp, the room started to smell musty, and eventually water dripped onto the blinds and windowsill.
A quick patch helped for a while, but it didn't fix the cause. A proper fix meant replacing the whole roof, estimated at about $20,000. That didn't happen. Later, only part of the roof was replaced. You can see it in our Seattle roof replacement guide.
Photos of this leak.
What waiting adds to the bill
Each stage adds work on top of the leak repair. Bars show a rough total at each stage.
- 1Caught earlyFix the leak itself$150–$1,500Fixr, HomeGuide
- 2Stains and bubbling paintLeak + patch and paint the ceiling$200–$500 extraHomeGuide
- 3Wet, sagging ceilingLeak + new drywall + paint$500–$2,500HomeGuide
- 4MoldAdd mold remediation$1,500–$6,000 extraHomeGuide (up to $15,000 in attics)
- 5Roof at the end of its lifeReplace the roof$5,700–$16,000HomeGuide
Bars use a log scale, so each step to the right is about ten times more money. Ranges are national published figures, not quotes.
If it has come to step 5, see what a new roof costs in Seattle or try the roof replacement cost calculator.
Is it the roof, or something else?
Before you pay a roofer, check that the water is actually coming from the roof. A stain on the ceiling can also come from plumbing, a window, or condensation. These clues help narrow it down.
| What you notice | Most likely source | Who to call first |
|---|---|---|
| Stain grows only when it rains, on the top floor | Roof: shingles, flashing, vent boot | Roofer |
| Water appears after wind-driven rain, around a window | Window seal, siding or flashing above the window | Roofer or window installer |
| Stain under a bathroom, whether or not it rains | Plumbing: shower, toilet, drain or supply line | Plumber |
| Damp spots in winter, worse on cold mornings, often near exterior corners | Condensation from poor ventilation or insulation | Roofer or insulation contractor to check the attic |
| Icicles along the eaves, leak near the edge of the roof in freezing weather | Ice dam | Roofer |
If you can safely get into the attic with a flashlight during or right after rain, look for wet wood or dark streaks on the underside of the roof deck. Water often runs along a rafter before it drips, so the leak on the roof can be several feet away from the stain on your ceiling.
Roof leak repair cost by severity
| Leak | Typical repair cost |
|---|---|
| Minor: a small leak with no water damage | $150–$1,000 |
| Moderate: a larger leak with some water damage | $1,000–$3,000 |
| Major: extensive structural or interior water damage | $3,000–$6,000+ |
Roof leak repair cost by cause
Three guides price the same causes differently. A dash means the guide doesn't list it.
| Cause | HomeGuide | Fixr | Angi |
|---|---|---|---|
| Clogged gutters | — | $100–$250 | $30–$200 |
| Vent or pipe boot | $100–$500 (vent) $250–$600 (pipe boot) | $100–$600 | $40–$650 (seals) |
| Missing or damaged shingles | $100–$300 (up to 25) | $150–$450 | $80–$1,700 |
| Nail pops | $200–$500 | $200–$500 | — |
| Flashing | — | $200–$600 | $200–$900 |
| Skylight | $225–$800 | $300–$800 | — |
| Roof valley | $300–$1,500 | $300–$1,500 | — |
| Ice dam | $350–$1,500 (removal) | $400–$1,500 | $300–$4,000 |
| Chimney | $150–$700 (minor) | $200–$3,500 | $800–$9,000 (cracks) |
What else ends up on the invoice
| Item | Cost | Source |
|---|---|---|
| Inspection to find the leak | $100–$400 | HomeGuide |
| Roofer labor | $40–$100/hour | HomeGuide ($45–$80 per Angi, about 70% of the bill) |
| Ceiling patch and paint | $200–$500 | HomeGuide |
| Ceiling drywall replacement with leak fix | $500–$2,500 | HomeGuide |
| Mold remediation | $1,500–$6,000 | HomeGuide, up to $15,000 for extensive attic damage |
| Permit | $70–$250 | HomeGuide |
For prices on other roof repairs and roof materials, see our roof repair cost guide.
What to do in the first 24 hours
- Put a bucket under the drip and move furniture, rugs and electronics out of the way.
- If the ceiling is sagging or water is near a light fixture, stay out from under it and switch off power to that area at the breaker.
- Take dated photos of the stain, the ceiling and anything damaged. You'll need them for insurance or your landlord.
- Don't climb onto a wet roof. A roofer can put a tarp over the area until it's dry enough to repair.
- Dry what you can with fans or a dehumidifier. The EPA says drying within 24–48 hours usually prevents mold.
- Homeowners: call your insurer before paying for major work. Renters: tell your landlord in writing (see below).
Roof leak repair in Washington: Seattle price, tax, permit and insurance
In Seattle, Angi lists roof leak repair at $350 to $1,550 (August 2026). Washington taxes a roof repair for a homeowner on the full contract price, labor included: state law counts repairing buildings for consumers as a retail sale (RCW 82.04.050), and the Department of Revenue says the contractor collects tax on the gross contract price.
| Leak repair before tax | Seattle (10.55%) | Kent (10.40%) | Bellevue (10.30%) |
|---|---|---|---|
| $350 (Angi Seattle low end) | $387 | $386 | $386 |
| $900 (Angi national average) | $995 | $994 | $993 |
| $1,550 (Angi Seattle high end) | $1,714 | $1,711 | $1,710 |
- Permit in Seattle: SDCI says minor repairs costing $6,000 or less in any 6-month period don't need a permit, and roof repair is covered only if the building envelope isn't changed and the work is as good as the existing structure. Kent's residential permit page lists "Adding, repairing, or removing any roofs" as needing a permit. Other cities: roof permit rules by city.
- Insurance: Washington's Insurance Commissioner says home insurance usually covers sudden water damage but often not gradual leaks, and won't cover water damage if you delay repairs. Mold and rot are usually not covered unless they come from covered water damage. Storm damage: roof insurance claims in Washington.
- Tarp while you wait: Angi puts professional roof tarping at $0.70 to $2.80 per square foot, with a national average of $450, and says most tarps only last safely for about 90 days.
- Before you hire: check the roofer on L&I's Verify a Contractor tool. For a home repair of $1,000 or more, the contractor must give you a written disclosure statement (RCW 18.27.114).
Seattle repair prices, including moss removal and gutter cleaning: roof repair cost in Seattle. Replacing a roof in the wet season: re-roofing in the rain.
If you rent in Washington State
A roof leak in a rental is the landlord's job to fix. Under Washington's Residential Landlord-Tenant Act, the landlord must keep the roof and other structural parts in reasonably good repair and keep the home reasonably weathertight (RCW 59.18.060).
- Tell them in writing. The notice should name the address, the owner if you know it, and the problem. Keep a copy and your photos (RCW 59.18.070).
- Know the deadlines. After written notice, the landlord generally has up to 10 days to start repairs, or 24 hours if the condition is imminently hazardous to life.
- Get help before withholding rent. The law sets strict steps for tenant remedies. WashingtonLawHelp.org has free guides.
This is general information, not legal advice.
Frequently asked questions
How much does it cost to repair a roof leak?
Most roof leaks cost $150 to $1,500 to fix. Fixr puts the average at about $800 and Angi at about $900. Leaks that have soaked the ceiling or caused mold cost more, because that damage has to be repaired too.
How much does it cost to find a roof leak?
A roof inspection to trace a leak typically costs $100 to $400, according to HomeGuide. Some roofers credit that fee toward the repair.
Is a small roof leak an emergency?
Not always, but it gets worse over time. The EPA advises drying water-damaged materials within 24 to 48 hours to prevent mold. A slow leak keeps drywall and insulation wet for weeks, which is how a small repair turns into ceiling and mold work.
How much does it cost to fix a ceiling after a roof leak?
HomeGuide lists $200 to $500 to patch and paint water-damaged drywall, and $500 to $2,500 for a fuller repair that includes fixing the leak and replacing drywall.
How much does roof leak repair cost in Seattle?
Angi lists roof leak repair in Seattle at $350 to $1,550 (August 2026). With Seattle's 10.55% sales tax, which applies to labor as well as materials, that's about $387 to $1,714.
Does home insurance cover a roof leak in Washington?
Washington's Insurance Commissioner says home insurance usually covers sudden water damage but often not gradual leaks, and won't cover water damage if you delay repairs. Your policy decides.
Who pays for a roof leak in a rental in Washington?
The landlord. Washington law requires landlords to keep the roof in reasonably good repair and the home reasonably weathertight (RCW 59.18.060). Tenants should give written notice and keep copies and photos.
About these prices. The ranges are published estimates from the sources below, as of the dates shown. Material costs, labor rates, tariffs and inflation can change prices after those dates, and your home may differ. Use them to plan a budget, then get written quotes from licensed contractors.
Sources
- Fixr — How Much Does It Cost to Repair a Roof Leak? (Jan 27, 2026)
- HomeGuide — Roof Leak Repair Cost (updated Feb 9, 2026)
- Angi — How Much Does It Cost to Repair a Roof Leak? (updated Aug 3, 2026)
- HomeGuide — Ceiling Repair Cost (updated Nov 21, 2025)
- U.S. EPA — A Brief Guide to Mold, Moisture and Your Home
- Washington State Legislature — RCW 59.18.060, Landlord duties
- Washington State Legislature — RCW 59.18.070, Landlord's failure to remedy defective condition
- Angi — Roof repair cost in Seattle, WA (updated Aug 4, 2026)
- RCW 82.04.050; DOR — Custom construction; DOR — Local sales tax rates, Q4 2026
- Seattle SDCI — Do You Need a Permit? and City of Kent — Residential building permits
- Washington Office of the Insurance Commissioner — Leaks, water damage and mold; Angi — Cost to tarp a roof (Oct 13, 2026)
- RCW 18.27.114 and L&I — Hiring a contractor
National cost sources accessed September 26, 2026. Washington sources checked October 15–24, 2026.
These figures are estimates compiled from the published sources above. They are not quotes and can't account for your roof, your location or your contractor. Get written estimates from licensed, insured roofers before deciding. See our disclosure and disclaimer.