Hand-vetted contractors for kitchens, bathrooms, ADUs, and whole-home remodels across Round Hill, Westside Alamo, Alamo Oaks, and the Danville Boulevard corridor. Our matchmakers work next door in Pleasant Hill.
Alamo is an unincorporated, low-density community of single-family homes on generous lots, and the housing reflects that. Round Hill and the Westside are largely 1960s through 1980s builds, 2,000 to 5,000-plus square feet on third-acre to acre-plus parcels, with the largest custom-home enclaves climbing the foothills toward Las Trampas. Alamo Oaks off Stone Valley Road holds older homes from the 1930s to 1960s on multi-acre lots, and the eastside along Danville Boulevard mixes 1950s ranches, mid-century contemporaries, and recent remodels.
Many of these 1960s to 1980s homes have strong structural bones but compartmentalized layouts and dated finishes, which is exactly what pushes Alamo owners toward whole-home and addition-scale projects rather than quick refreshes. Our matchmakers are based in Pleasant Hill, a short drive up I-680, and we have placed contractors on Alamo kitchens, primary-suite additions, detached ADUs, and full-scope renovations on properties families intend to keep for decades.
Realistic 2026 cost ranges based on the projects our contractors are actually pricing in Alamo right now.
Alamo kitchens are often the centerpiece of a larger reconfiguration. On 1960s and 1970s Round Hill and Westside homes the typical scope opens compartmentalized rooms into a single great room, replaces dated cabinetry, and adds a generous island sized for an acre-lot family home. Larger custom estates run toward the top of the range with premium appliance packages and stone.
Primary baths in older Alamo homes tend to be small and dated relative to the size of the house. Most projects we see expand into adjacent closets or square footage to fit a curbless walk-in shower, double vanity, and freestanding tub. Hall and guest baths fall toward the lower end of the range.
Alamo's large lots are well-suited to detached ADUs, whether for multigenerational living, a home office, or a future downsize on the same property. State law keeps loosening: AB 2533 makes it easier to legalize older unpermitted units, and these rules apply across unincorporated Contra Costa, including Alamo. Hillside Westside parcels may need extra grading and foundation work.
Browse ADU models →This is the signature Alamo project. Owners of structurally sound 1960s to 1980s homes with closed-off floor plans rebuild systems and reopen the layout, often adding a primary suite or second story. On the Westside, large hillside parcels support significant additions, with geotechnical and foundation work folded into the budget.
Because Alamo is unincorporated, projects permit through the Contra Costa County Department of Conservation and Development at 30 Muir Road, Martinez, not a city building department. The DCD operates 100 percent digital submittal through its online ePermit Center, and paper plans are no longer accepted. The main permit line is 925-655-2700, and planning and building appointments run through 925-655-2774; some services are by appointment only.
The Contra Costa County Fire Protection District adopted updated Fire Hazard Severity Zone maps effective July 10, 2025, the first state update since 2011. Alamo's Westside climbs into the Las Trampas hills and the east reaches Mount Diablo's western slopes, so hillside and wildland-adjacent parcels may fall in a High or Very High zone even though the flatter eastside likely does not. Where a parcel is mapped Very High, Chapter 7A ignition-resistant exterior assemblies and defensible-space requirements apply to additions and major remodels, so check the maps before scoping exterior work.
Contra Costa is straddled by the Calaveras and Concord faults. Most older Alamo homes predate modern foundation-bolting standards, so during a major remodel expect adders for foundation bolting and cripple-wall shear paneling, plus drilled-pier or geotechnical upgrades on Westside hillside homes. Those retrofits typically run in the $15K-$60K range depending on scope.
A recent Alamo renovation from our contractor network. Browse the full gallery to see finishes, layouts, and the range of work completed here.
See the full Alamo projectTell us about your project. A matchmaker will call you within one business day and hand-pick 2–5 contractors from our vetted network who have worked in Alamo before.
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