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San Rafael averages 32–34 inches of rain, much of it in a few big storms. The October checklist that gets a roof through them.
Roofing GuideAsk the internet what a roof costs in Marin and you will get national averages dressed up as local knowledge. This page does it differently: published Marin and Bay Area figures only, each labelled with its source and its limits, so you can sanity-check any quote — including ours.
Two published Marin-specific sources frame the range. Lifetime Roofing’s Marin County guide puts shingle replacement at $18,000–$38,000; Hamilton Exteriors puts replacement across all materials at $18,000–$45,000. Real Marin projects published as case studies land inside those ranges: a Mill Valley replacement at $26,000 and a larger Corte Madera project at $41,500. Where a given home falls depends on size, pitch, layers coming off, deck condition, and material — which is why the honest version of this answer is always a written quote after a look, not a number from a webpage.
Marina Bay Roofing publishes a Marin per-square-foot table for tear-off and replacement, which is the most checkable math in this market:
| Asphalt shingle — tear-off & replace | ~$9 / sq ft |
| Tile — tear-off & replace | ~$14 / sq ft |
| Metal — tear-off & replace | ~$21 / sq ft |
Multiply by your roof’s actual square footage (not the home’s floor area — pitch and overhangs add surface) and you have a working estimate before anyone climbs a ladder. Flat roofs price differently: published Bay Area ranges for TPO/PVC run $15,000–$28,000 for typical residential footprints.
No Marin-only repair dataset exists, so here is the honest proxy, labelled as one: Angi’s San Francisco market figures put a typical roof repair at $974–$2,697, averaging $1,835, with leak repair at $700–$3,100 and flashing work around $300–$600. Marin labor runs at Bay Area levels, so treat these as the right neighborhood rather than a promise. Small detail repairs — a vent boot, a flashing line — often land below the range; valley rebuilds and underlayment work land inside it.
Compare itemized quotes line by line and the variance usually explains itself. Our repair and replacement pages walk through what our written quotes itemize.
The money questions, with sources attached.
Call (628) 202-3250 →Published Marin guides frame shingle replacement at $18,000–$38,000 and all-materials replacement at $18,000–$45,000. Verified published Marin projects — $26,000 in Mill Valley and $41,500 in Corte Madera — sit inside those ranges. Your home’s number depends on size, pitch, layers, deck condition, and material, and should arrive as an itemized written quote.
The best published proxy is Angi’s San Francisco data: repairs typically $974–$2,697 (average $1,835), leak repairs $700–$3,100. There is no Marin-only dataset, so we label it a Bay Area proxy — small detail fixes often cost less; structural and underlayment work costs more.
Labor and handling. Marina Bay Roofing’s published Marin table puts tear-off and replacement at about $9/sq ft for shingle, $14 for tile, and $21 for metal. Tile is heavy, brittle, and slow to lift and relay — and remember, a lift-and-relay that reuses your tile prices differently from a full tile replacement.
Completely. A phone estimate prices the roof the caller describes; a written quote prices the roof that exists — its layers, deck, flashing, drainage, and fire-zone requirements. Ours follows a free inspection and itemizes each of those, which is also what makes quotes comparable between roofers.
San Rafael averages 32–34 inches of rain, much of it in a few big storms. The October checklist that gets a roof through them.
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Roofing GuideFree inspection first, then an itemized written quote for your actual roof — size, pitch, layers, deck, material.
Call (628) 202-3250 →Tell us the roof type and what you are planning. The quote is in writing and the ranges above will suddenly make sense.