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Serving Concord, CA and surrounding areas. (925) 536-0971
CDM Concord Masonry serves Martinez, CA homeowners with foundation repair, chimney repair, and retaining wall construction - with every inquiry answered within 1 business day, licensed under the California CSLB, and free on-site estimates on every job.
Martinez sits on clay-heavy Contra Costa soil that swells with winter rain and shrinks in summer heat, and that cycle is the primary driver of foundation movement throughout the city. Homes on the hillside streets north of downtown face the added pressure of slope drainage pushing against foundation walls after heavy rain. Our foundation repair work accounts for this soil behavior - we stabilize what has moved and build in the right materials to handle the same stress that will continue year after year.
Martinez has a significant number of older homes near downtown - some from the early 1900s - with unreinforced brick chimneys that have absorbed decades of wet winters and dry summers without ever having the mortar touched. When mortar joints start to crumble or white staining appears on the brick face, those are early warnings that water is already working its way inside the structure.
Sloped lots are common in the hillside neighborhoods above downtown Martinez - particularly along Alhambra Avenue and into the hills to the north and east. Retaining walls on those properties manage soil that moves significantly with each wet season, and walls built without accounting for the local clay-heavy ground and drainage patterns develop lean and cracking within a few years of installation.
The Victorian and craftsman homes near downtown Martinez have wood and brick exteriors that have been through a century or more of Bay Area weather. When mortar crumbles out of joints or brick faces start to spall - peeling away in thin layers - the damage accelerates quickly once water finds its way behind the surface. Matched brick replacement and repointing restores the seal before the next winter.
Landlords managing older Martinez rental properties near downtown often need a full masonry refresh between tenants rather than spot repairs - cleaning efflorescence, repointing deteriorated joints across multiple surfaces, and sealing the result so the structure handles the rainy season without leaking through to interior walls.
Postwar ranch homes in the eastern neighborhoods of Martinez often have brick chimneys and garden walls where the original mortar has hardened, cracked, and begun to fall out after 60-plus years. Tuckpointing removes the old material and replaces it in layers, matched to the existing joint profile so the repair blends in and holds through the same seasonal cycle that wore down the original mortar.
Martinez is the county seat of Contra Costa County and one of the older incorporated cities in the East Bay, with roots going back to 1876. That history means the housing stock is more varied than in most Bay Area suburbs: Victorian-era homes and craftsman bungalows near downtown mix with postwar ranch homes from the 1950s and 1960s, and newer subdivisions push up into the hillsides on the north and east sides of the city. Each type of property comes with its own masonry challenges. Century-old brick structures downtown have original mortar that is long past its service life. Postwar ranch homes are now 60 to 70 years old, with chimneys and concrete flatwork that have been through decades of Martinez winters and summers without major attention. Hillside properties face the additional demands of slope drainage, retaining walls, and the extra moisture pressure that comes with elevated lots.
The underlying soil throughout most of Martinez is clay-heavy, which means the wet-dry cycle that runs from November through March and then again through the dry summer months puts consistent stress on everything that touches the ground. Heavy rain saturates the clay and causes it to swell; the long, hot summer bakes it back down. That annual movement cracks driveways, lifts walkways, and stresses foundations and retaining walls in a predictable pattern that experienced local contractors recognize and plan for. The City of Martinez has its own building department that handles permits for structural masonry work, and familiarity with that process is a practical requirement for any contractor working regularly in this city.
Structural masonry and foundation work in Martinez goes through the City of Martinez building department - a process we handle routinely for permitted jobs in this city. Martinez is one of the few East Bay cities where we encounter a genuine mix of housing eras in close proximity: we work on craftsman bungalows from the 1910s and 1920s, postwar ranch homes from the 1950s, and hillside properties built in the 1980s and 1990s within the same neighborhood radius. Each era has its own masonry characteristics, and we adjust our approach accordingly.
The streets near the John Muir National Historic Site and Alhambra Avenue tend to have older, more varied housing where foundation and chimney issues are common in structures that have never had a professional assessment. The hillside neighborhoods to the north - accessible via Alhambra Valley Road and connecting streets - are where we most often see retaining wall failures and drainage problems caused by the combination of slope and clay soil. The Martinez Marina area at the north end of the city sits close to the Carquinez Strait, where humidity levels run higher than the inland neighborhoods and accelerate mortar degradation on exposed exterior surfaces.
We also serve homeowners in Pittsburg to the east along the Highway 4 corridor, where growing neighborhoods with newer concrete block construction create demand for a different set of masonry services. Homeowners in Pleasant Hill to the south will recognize the same postwar housing stock and clay soil conditions that drive foundation and brick repair demand throughout this part of Contra Costa County.
When you reach out, we ask a few quick questions - what you are seeing, how long it has been going on, and your address in Martinez. We reply within 1 business day and schedule a free on-site visit. We work Saturdays, which matters for Martinez residents who commute during the week.
We walk the structure with you, check for damage that is not obvious from the ground, and explain in plain terms what we found and why. If the scope requires a City of Martinez building permit, we tell you upfront and factor the review timeline into your schedule. You receive a written, itemized estimate - no vague totals.
Once you approve the estimate, we submit the permit application to the City of Martinez for any structural work that requires one. Permit review timelines vary but typically run a few business days to two weeks. We confirm your start date and what needs to be cleared from the work area.
Foundation repair and retaining wall jobs typically take two to five days depending on scope. Chimney and brick work usually runs one to three days. If a city inspector visit is required, we coordinate that directly. When the work is done, we walk you through what was completed and leave the site clean.
We serve homeowners throughout Martinez, CA and respond to every inquiry within 1 business day. Free estimates, licensed work, and City of Martinez permits handled when required.
(925) 536-0971Martinez is the county seat of Contra Costa County, incorporated in 1876, and home to about 38,000 residents. The city stretches from its older downtown core along Alhambra Avenue - where Victorian homes, craftsman bungalows, and early 20th-century commercial buildings still stand - out to the postwar ranch neighborhoods built in the 1950s and 1960s, and up into hillside subdivisions developed through the 1980s and 1990s. The owner-occupancy rate sits around 60%, and the city has a stable, long-established character that draws families who stay for decades. The John Muir National Historic Site in the Alhambra Valley draws visitors from across the country and is the city's most widely recognized landmark.
The Martinez Marina on the Carquinez Strait at the northern edge of the city is a popular local destination for fishing and weekend recreation. Interstate 680 and the Capitol Corridor Amtrak line connect the city to the broader Bay Area, and many residents commute to Oakland or San Francisco. The combination of housing diversity - from century-old downtown homes to 1990s hillside developments - means masonry contractors working in Martinez need to be comfortable across a wide range of construction types and eras. Nearby communities we also serve include Pleasant Hill to the south and Pittsburg to the east, both with active masonry repair demand driven by the same Contra Costa clay soil and seasonal climate patterns.
We assess and repair foundation cracks, settling, and structural issues to keep your property safe.
Learn moreOur masons restore deteriorated chimney masonry, crowns, and flashing for lasting performance.
Learn moreWe remove damaged mortar and repack joints to strengthen and weatherproof brick and stone surfaces.
Learn moreCracked or spalling bricks are replaced with matching materials to restore appearance and integrity.
Learn moreWe design and install durable paver driveways in natural stone, concrete, or brick finishes.
Learn moreEngineered retaining walls built to manage soil, prevent erosion, and define outdoor spaces.
Learn moreAging masonry structures are carefully cleaned, repaired, and restored to their original condition.
Learn moreCustom fireplace surrounds and hearths built in brick or stone to enhance any living space.
Learn moreNatural and manufactured stone veneer applied to walls, columns, and facades for lasting curb appeal.
Learn moreStructural concrete masonry unit walls built for durability, security, and noise reduction.
Learn moreConcrete block foundation walls installed to provide a strong, moisture-resistant base for structures.
Learn moreFully custom outdoor kitchen structures built in stone or brick, designed for California living.
Learn moreFlagstone, brick, and paver walkways installed to create safe, attractive pathways across your property.
Learn moreNew brick walls built for fencing, garden borders, and architectural features with clean, expert coursing.
Learn moreHandcrafted stonework for walls, pillars, and decorative features using natural and cultured stone.
Learn morePrecision mortar joint repointing to stop water infiltration and renew brick surfaces.
Learn moreFoundation repair, chimney work, retaining walls, and brick restoration - we cover all of Martinez and respond within 1 business day. Call now or send a message to get your free on-site estimate.