Sonoma County, California
Gutter cleaning, repair and new gutters in Cotati, CA
A normal year in Cotati brings about 26 inches of rain; on roughly 6 of its days, an inch or more comes down at once. The wettest season is winter (December to February), with about 15.2 inches; the driest is summer (June to August), with 0.3. That is about 15,800 gallons a year off each 1,000 square feet of roof, every drop of it through a gutter and a downspout.
Call (866) 228-6229 free call to a gutter contractor serving CotatiCotati: rain and roofs
NOAA station USC00046826, 7 miBars to one scale; the longest is winter (December to February).
Counting days with an inch of rain or more, Cotati sits near the middle of the 939 places in California on this site (6.0 a year). Its housing ranks among the newest by median year built of the 938 places in California on this site (half built by 1985). By its first fall frost it sits near the middle of the 507 places in California on this site (November 25).
When to clean gutters in Cotati
The first fall frost comes around November 25 in a typical year here, and the last spring frost around February 28 (median dates, NOAA normals). Booking the fall cleaning after the first frost, once the trees over the roof are bare, catches the season’s drop in one visit; the spring cleaning comes after the pollen and catkins are down.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for Cotati rain
What overwhelms a gutter is a burst, not a season. In Cotati the five-minute rain expected about once in ten years falls at 3.44 inches an hour (NOAA Atlas 14 Volume 6). At that rate one 2-by-3-inch downspout drains about 2,090 square feet of roof and one 3-by-4-inch downspout about 4,190, by the rule in the Copper Development Association’s design handbook. Try your own roof in the gutter and downspout calculator, which starts from this figure.
The houses in Cotati
Half the homes in Cotati were built by 1985, 35% before 1980 (ACS 2020–2024). In a neighborhood that age, many houses are on their second set of gutters or due for one, and the fascia board behind them is worth checking at the same visit.
58% of households own their home, and 53% of homes are detached houses, 12% townhouses. In a townhouse or HOA community, check who owns the gutters and what colors are allowed before booking.
Hiring in California
Ask any contractor working in Cotati what California requires of them for gutter work, and to show proof of insurance. Hiring a gutter contractor
In California’s fire hazard severity zones, the 2025 Wildland-Urban Interface Code (in force January 1, 2026) requires gutters and downspouts of noncombustible material, and gutters fitted with an approved means to keep leaves and debris from collecting (section 504.4). (2025 California Wildland-Urban Interface Code, Chapter 5 (UpCodes))
Gutter work in Cotati
With half the homes built by 1985, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it: