San Dimas is a city under the San Gabriel Mountains, in the east San Gabriel Valley and Pomona Valley region. The census counts 5,386 owner-occupied single-family homes. The median home was built in 1976.
A median house built in 1976
The median home was built in 1976, and in the Census Bureau's 2020 to 2024 estimates the median owner-reported value is $801,800. The assessment records the deck, underlayment, flashing and the number of layers.
Zone 9 for the east San Gabriel Valley
San Dimas is in climate zone 9. On a single-family house, a reroof past half the roof needs a steep-slope covering with at least 0.20 reflectance after aging and 0.75 emittance, with SRI 16 as the other route. Overlays count as replacement.
Fire maps the city posts, and the permit office
The City of San Dimas posts CAL FIRE's updated fire hazard severity zone maps, released on 24 March 2025, and says the city must adopt the Moderate, High and Very High zones within the city by ordinance. Look up your address on the map and ask the city what class your covering needs. Permits come from the city's Building and Safety office.
Roofing jobs in San Dimas
Replacement and new roofs. The assessment covers the fire class questions for the address.
San Dimas questions
What do the house ages in San Dimas mean for the roof?
The median build year is 1976. The assessment records the deck, underlayment, flashing and layer count.
Does the San Dimas climate zone change what a reroof needs?
Zone 9. A single-family reroof of more than half the roof needs steep-slope at least 0.20 reflectance after aging and 0.75 emittance, with SRI 16 as the other route.
Which roofing jobs do you take in San Dimas?
Roof replacement and new roofs. We handle each job from the assessment to the final inspection. If your need is different, describe it in the form and the assessment will cover it.