Los Angeles County, California
Gutter cleaning, repair and new gutters in Altadena, CA
A normal year in Altadena brings about 21 inches of rain; on roughly 7 of its days, an inch or more comes down at once. The wettest season is winter (December to February), with about 13.6 inches; the driest is summer (June to August), with 0.3. Off a 1,000-square-foot roof, that comes to about 13,200 gallons a year for the gutters to carry.
Call (866) 228-6229 free call to a gutter contractor serving AltadenaAltadena: rain and roofs
NOAA station USC00040144, 1 miBars to one scale; the longest is winter (December to February).
By heavy-rain days, Altadena falls 211th for heavy-rain days of the 939 places in California on this site (6.9 a year). Its housing ranks 8th oldest by median year built of the 938 places in California on this site (half built by 1945).
When to clean gutters in Altadena
Frost is rare in Altadena, and in many years there is none (NOAA normals). With no hard freeze to strip the trees, the fall cleaning follows the leaf drop itself; book it once the trees over the roof are bare, and plan a second visit in spring.
When to clean gutters explains how the trees over a roof change the schedule.
Gutter and downspout size for Altadena rain
Gutters are sized for the worst few minutes of a storm, not for the year. In Altadena the five-minute rain expected about once in ten years falls at 5.52 inches an hour (NOAA Atlas 14 Volume 6). At that rate one 2-by-3-inch downspout drains about 1,300 square feet of roof and one 3-by-4-inch downspout about 2,610, 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 Altadena
Half the homes in Altadena were built by 1945, 89% before 1980 (ACS 2020–2024). At that age a gutter has seen decades of leaves and storms, and the fascia it hangs from has too. On a house built before 1978, replacing more than 20 square feet of painted fascia or trim falls under the EPA’s lead-safe rule, so ask whether the crew is certified.
78% of households own their home, and 87% of homes are detached houses, 5% townhouses. Where an HOA governs the exterior, its rules on gutter color and style apply before any order is placed.
Hiring in California
Before hiring in Altadena, ask which California license or registration the contractor holds and for a certificate of liability 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 Altadena
With half the homes built by 1945, replacement gutters and the fascia behind them come up more often here than in newer suburbs. The line takes all of it: