Roofers in Diamond Bar, CA 91789
3 roofing companies, with local market data for this ZIP.
General contractors 30HVAC 9Concrete and masonry 4Garage doors 3Roofing and exteriors 3Electricians 3Carpentry, drywall and windows 2Other construction trades 2Fences and decks 2Remodeling 2Flooring and tile 2
Area profitability, roofing74 / 100Strong market, balanced field
Typical home value$1,128,000+1.4% in the past year
New homes permitted, 202522,250Los Angeles County
Homeowners82.1%12,716 households
Source: Zillow (home value and housing demand in the score), data through Sep 2026. Permits and households: U.S. Census Bureau.
Diamond Roofing SystemsRoofing contractor · 20651 Golden Springs Dr, Diamond Bar(800) 720-7663 · droofinginc.com
Micasa Pro Roofers WalnutRoofing contractor · 340 S Lemon Ave, Walnut(909) 610-9043 · micasaroofingwalnut.com
USA RoofingRoofing contractor · 368 S Lemon Ave, Walnut(909) 468-4872 · usaroofing.com
Roofing in ZIP 91789 at a glance
Local roofing angle: 539 homes in this ZIP, 4% of the total, were built from 2000 to 2009, so they are now 17 to 26 years old. Only 42% were built before 1980.
Local figures are estimates from public records and Zillow housing data, updated regularly.