Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Roofers in Mill Valley, CA
Roofers in Mill Valley, CA work on homes that fight a different battle than most of the Bay Area. Instead of sun-baked shingles, we deal with redwood needles buried in valleys, moss that never fully dries, and roof pitches steep enough that even walking them takes planning. Most Mill Valley roofing jobs come down to moisture management on older, often hillside homes where access is tight and debris never stops falling. If your roof is leaking or the gutters are packed with redwood litter for the third time this year, call Brennan Roofing at (361) 320-9467 and we’ll give you a written price before any work starts.
Why Mill Valley Homes Are Different
Mill Valley sits in a cool, fog-influenced marine climate at the base of Mount Tamalpais, and the redwood canopy changes how every roof performs. Shaded roof planes stay damp through most of the year, which means moss and algae take hold faster than in sunnier parts of Marin. We regularly see decking rot under shaded eaves in Cascade Canyon and Blithedale Canyon, where gutters clog with redwood needles and leaves within weeks, not months. Twice-yearly debris clearing isn’t optional here. It’s the difference between a roof that sheds water and one that slowly rots from the top down.
The housing stock adds another layer. Mill Valley’s early-1900s shingle-style cottages in downtown and Old Mill often have low-slope or nearly flat sections that hold water longer than steeper planes. Mid-century and modern hillside homes in Tamalpais Valley and the slopes above Strawberry were built around the terrain, which means irregular rooflines, multiple valleys, and roof pitches that start steep and flatten near the ridge. Many hillside lots leave no room for staging equipment, so crews work off ladders and surrounding terrain instead of a flat driveway. That access problem is real, and it affects both how the job is done and how long it takes.
Permit realities matter too. Mill Valley’s building department follows Marin County standards for re-roofing, and many homes in the hillside overlay zones require additional review before a full replacement is approved. We handle the paperwork and coordinate inspections so the homeowner doesn’t have to chase the city. The terrain, the moisture, the debris, the older framing: none of it surprises us anymore, but all of it changes what the right roofing job looks like in Mill Valley.
Our Main Mill Valley Services
Mill Valley homeowners call us most about two situations: a leak that showed up after winter rain, and an aging roof that needs a full replacement before the next wet season. Each service has its own page with specific pricing and process details.
Roofing Company in Mill Valley
Most Mill Valley re-roofing jobs involve tearing off old shingles or shake, replacing any rotted decking, and installing new underlayment, drip edge, and flashing before the finish material goes on. On hillside homes, we stage materials carefully because there’s often no flat ground to work from. We use manufacturer products from GAF, CertainTeed, and Owens Corning, and every installation starts with a written price in hand. For full detail on the process, materials, and what to expect, see Roofing Company in Mill Valley.

Roof Repair in Mill Valley
Mill Valley roof repair calls usually trace back to clogged valleys, failing flashing around chimneys and skylights, or moss that lifted shingles enough to let water underneath. The redwood canopy means debris accumulates fast, and a small leak left through one wet winter turns into decking replacement by spring. We repair the source, not just the stain on the ceiling. For pricing, common repair types, and how we handle second visits under the guarantee, see Roof Repair in Mill Valley.

Roof Inspection in Mill Valley
In Mill Valley, a roof inspection is most useful before the winter rains arrive and again after a storm season ends. We walk the roof when it’s safe to do so, check valleys and flashings for debris or gaps, and document what we find in writing with photos. For homes on steep hillside lots where walking the roof isn’t practical, we inspect from the eaves and attic where possible. To schedule one or understand what the report includes, see Roof Inspection in Mill Valley.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Mill Valley
We install materials from GAF, Atlas, and Tamko, chosen for how they handle Mill Valley’s damp, shaded conditions. Parts and materials come from regional supplier stock, which keeps typical jobs moving without long waits. Learn more about our brands.
Pricing for Roofers in Mill Valley, CA
Mill Valley roofing prices reflect the terrain and the housing stock. Steep pitches, multiple valleys, and limited staging space all push labor costs up compared to flat suburban lots. Here are the typical ranges we quote.
| Service | Typical range in Mill Valley |
|---|---|
| Full roof replacement (asphalt shingle, tear-off included) | $10,500 – $24,000 |
| Roof repair (minor leak, flashing, or shingle section) | $350 – $1,700 |
| Roof inspection (written report with photos) | $150 – $450 |
| Roof tune-up (valley clearing, tight sealing, spot checks) | $550 – $2,500 |
| Bur repair replacement (torch-down or modified bitumen) | $750 – $1,500 |
| Qora shake install (material only, per square) | $520 – $740 |
| Asphalt shingle & hot mop | $390 – $520 |
| Boral steel stone-coated | $740 – $900 |
| TPO 60 mil | $740 – $900 |
| TPO 80 mil | $880 – $1,000 |
| Polyurethane foam (spray foam with coating) | $1,350 – $3,700 |
What pushes a Mill Valley quote higher is the roofline: a steep pitch with limited ladder access costs more in labor than a low-slope ranch roof with a flat driveway. Debris clearing and moss treatment can also add to a repair bill if the roof hasn’t been cleaned in a while. Whatever the number, it goes on paper before any work starts, and it does not move at the door.
Neighborhoods We Serve in Mill Valley
We cover the full Mill Valley area, from the flats near downtown to the upper canyon roads where access gets tight. Typical response time for a scheduled visit is within a day or two depending on the season; emergency leak calls get priority whenever possible.
- Downtown and Old Mill
- Tamalpais Valley
- Blithedale Canyon
- Cascade Canyon
- Strawberry and the surrounding hillsides
Service Area – Cities Near Mill Valley
Brennan Roofing serves Mill Valley and the surrounding Marin communities. If you’re in a neighboring city, we can often schedule you just as quickly as a Mill Valley address. See our pages for Corte Madera, CA, Larkspur, CA, Sausalito, CA, and Kentfield, CA.
Serving Mill Valley, CA - Our Local Coverage Area
We’re based in the Mill Valley area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roofers in Mill Valley
We schedule most Mill Valley visits within one to two business days. Leak calls during the winter rainy season get priority, and our phones are answered by a live person 24/7, so you’ll know when we’re coming without leaving a voicemail. Call (361) 320-9467 and we’ll set a time that works.
Most full re-roofing projects in Mill Valley require a permit through the city’s building department, and hillside overlay zones may require additional review. We handle the permit paperwork and coordinate inspections as part of the job. Repairs that don’t involve structural changes typically don’t need one.
We cover all of Mill Valley, including the canyon neighborhoods and hillside homes off the main roads, plus Corte Madera, Larkspur, Sausalito, and Kentfield. If you’re unsure whether we serve your street, call (361) 320-9467 and a live person will confirm it before you book anything.
Call Brennan Roofing at (361) 320-9467 for a free estimate. The price goes on paper before any work starts, and every job carries the 365-Day Done Right Promise in writing. Travis Oakley runs the Mill Valley crew to The Garrison Standard: background-checked technicians, a live person on the phone, and a price that doesn’t change once it’s written down.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Mill Valley Customers Say
"Storm took off a section of shingles. They were here next morning to tarp it and finished the repair that week."
- Elaine D."Ridge vent added and the attic is cooler. Fair price compared to the other two quotes."
- Vernon C."Neat, quiet, and disciplined crew. Magnet swept the yard after."
- Tonya R.






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