Roofing Contractor in Alum Rock, CA

County or San Jose? Sorting out an East San Jose permit

The Alum Rock census area is a patchwork of unincorporated County land surrounded by San Jose city limits. Parcels inside the unincorporated area get building permits from the County's Planning and Development department; parcels annexed into San Jose go to the City's permit center. A San Jose mailing address does not settle the question. We look up the parcel's jurisdiction before quoting permit time, and you can confirm it on the County's property information map.

From there the job follows our normal pattern: inspection photos, a free written estimate, permit filing, installation with daily cleanup, and the final inspection by whichever office issued the permit.

Older homes on the east-side slopes

Much of Alum Rock was built from the 1940s through the 1960s, on flat streets near Alum Rock Avenue and on slopes rising toward the park and the Diablo Range foothills. Decades of owner improvements show on the roof.

• Layered roofs: a second or even third shingle layer over the original hides soft decking and traps heat.
• Add-on rooms: low-slope roofs over enclosed porches and garage conversions often drain poorly where they meet the main roof.
• Undersized attic vents: older houses often have a few small gable vents and no ridge vent, which cooks shingles from below; see attic ventilation.
• Hillside runoff: homes on the slope take heavy roof runoff in winter storms, so gutters and downspouts need to carry it away from foundations.

The setting adds two pressures. Summer afternoons on the east side run hotter than near the bay, which dries out old felt and curls the top shingle layer faster. And the highest streets back onto the oak and grass canyon around Alum Rock Park, where Penitencia Creek comes out of the hills; owners up there should look up their parcel on CAL FIRE's hazard zone map before a reroof, since a mapped zone limits the roofing and vent products the County will accept.

Calaveras Fault shaking and Alum Rock chimneys

The 2007 Alum Rock earthquake, centered in the hills here on the Calaveras Fault, was a reminder that this corner of the valley shakes. Brick chimneys from the 1940s and 1950s often have cracked crowns and loose flashing. When a chimney no longer serves a working fireplace, removing it below the roofline during a reroof eliminates a leak point and a seismic hazard.

Alum Rock Avenue, Penitencia Creek and the road up Mount Hamilton

The Alum Rock census-designated place had 12,042 residents at the 2020 Census. Alum Rock Avenue is the spine of the community, running east from US 101 and I-680 until it becomes Mount Hamilton Road, part of State Route 130, the winding climb to Lick Observatory. White Road, McKee Road and Capitol Expressway carry most of the cross traffic, and much of the area falls inside the Alum Rock Union Elementary School District.

At the eastern end, Alum Rock Park opened in 1872 and is California's oldest municipal park, run by the City of San Jose even though some of the homes nearest it are not in the city. That split reaches the power bill too: unincorporated parcels default to Silicon Valley Clean Energy, while annexed San Jose addresses default to San José Clean Energy, both on PG&E lines. If a solar-ready reroof is in your plans, the parcel's status decides which program you start with.

Honest proof from a Campbell-based crew

We have no Alum Rock project photos or reviews from Alum Rock homeowners yet. The facts we can give: the community is inside our service area, it is roughly 25 minutes from our base, and we know how to separate County and City permit paths in East San Jose. Customer reviews from the Campbell area are on our reviews page.