Accessory building construction in Concord, CA

MDC Builders INC constructs accessory buildings for homeowners across Concord, California and the surrounding Bay Area.

Call (925) 548-4624
A newly constructed detached accessory building with a clean exterior finish on a residential lot in Concord, California. The structure sits within a landscaped backyard, separated from the main home, with a standard single-car garage door and side entry.

Expert Accessory building construction in Concord, CA

Accessory building construction adds usable space to your property without touching your main home. MDC Builders INC builds detached garages, workshops, storage buildings, and accessory dwelling units for homeowners in Concord and across the Bay Area. Concord sits in Contra Costa County, where lot sizes and setback rules shape what you can build and where. Detached accessory buildings in the area must meet local zoning standards, including setback and height requirements, so planning your build correctly from the start matters. Whether you need a dedicated workspace, extra storage, or a separate living unit for family, our team handles the full construction scope. We serve homeowners across Concord, Walnut Creek, Pleasant Hill, Martinez, Danville, Alamo, and the broader East Bay. If you are ready to add a functional structure to your property, contact MDC Builders INC to talk through your project.

What's included

  • Adds dedicated square footage to your property without altering your main home's layout
  • Creates a separate, functional space for work, storage, or housing that fits your property's footprint
  • Built to meet Contra Costa County and California building standards from the ground up
  • Increases usable property value across Concord and East Bay residential lots
  • Designed to match your site's setback and zoning requirements before construction begins
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Accessory building construction FAQ

Common questions about accessory building construction in Concord, CA.

Yes, detached accessory buildings are allowed on residential lots in Concord when they meet local zoning and setback requirements. MDC Builders INC can assess your site and plan a structure that fits your property.

We build detached garages, workshops, storage buildings, and accessory dwelling units for homeowners in Concord and across the Bay Area. Each build is scoped to your lot and intended use.

Yes, Concord requires accessory buildings to maintain specific setbacks from side and rear property lines. We plan each structure around those requirements so your build stays compliant.

Yes, we serve homeowners across the East Bay and broader Bay Area, including Walnut Creek, Martinez, Danville, Alamo, Pleasant Hill, Oakland, Fremont, and San Ramon. We also build in Sacramento, San Jose, Napa, and other Northern California communities.

An accessory building is a detached structure used for storage, parking, or work, while an accessory dwelling unit is a separate living space with sleeping, cooking, and sanitation facilities. Both types are available through MDC Builders INC.

Contact MDC Builders INC directly to discuss your property, intended use, and site conditions. We work with Concord homeowners from initial planning through completed construction.

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Proudly Based in Concord, CA

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Hours

  • Monday 8:00 AM - 4:30 PM
  • Tuesday 8:00 AM - 4:30 PM
  • Wednesday 8:00 AM - 4:30 PM
  • Thursday 8:00 AM - 4:30 PM
  • Friday 8:00 AM - 4:30 PM

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