Your Trusted Bay Area Construction Partners

SD & J Building Group Inc.

Premier General Contractor & Home Remodeling in the San Francisco Bay Area

Our Services

Quality Services

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Whole-Home Renovations

We optimize layouts, open up restricted spaces, and seamlessly integrate indoor-outdoor living areas.

Accessory Dwelling Units (ADUs)

ADU Builder Bay Area, Accessory Dwelling Units, Custom ADU Construction, Detached ADU California

Structural Footings & Concrete

Structural Footings & Concrete: Uncompromising Foundations for Seismic Safety

Precision Framing & Carpentry

Precision Framing & Carpentry: The Structural Backbone of Architectural Excellence

Commercial Tenant Improvements

Commercial Tenant Improvements: Optimizing Business Spaces for Growth

Custom Home Additions

Custom Home Additions: Expanding Your Footprint Without Moving

Safety & Quality

Committed To Keeping Your Project Safe & Compliant

Building in the San Francisco Bay Area requires an uncompromising dedication to safety, rigorous local code compliance, and structural integrity. As a fully licensed California general contractor, we enforce strict on-site safety protocols and precision engineering to protect your property, your investment, and our crew from foundation to finish.

Specialized Construction

For projects requiring strict technical execution, structural engineering, and deep regulatory compliance, SD & J Building Group Inc. provides high-performance, specialized construction services across the San Francisco Bay Area.

Accessory Dwelling Units (ADUs)
Structural Footings & Concrete
Precision Framing & Carpentry
Commercial Tenant Improvements

About Founders

Our Latest Works

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Science Lab Building

New York, USA

Long Gate Bridge

Malmo, SE

Enix Lawyer Building

Toronto, CA

Deep Sea Bridge

Athens, GR

What Our Clients Say

Testimonials

Elena R. – Palo Alto, CA

Exceeded every expectation on our custom Palo Alto home.

Working with SD & J Building Group was a seamless experience from structural framing to the final finishes. Navigating Palo Alto’s strict permitting process used to feel daunting, but their project managers handled everything directly.

David M. – San Jose, CA

Transformed our home into a modern masterpiece

Our San Mateo home needed a complete structural update and modern kitchen expansion. The SD & J team brought incredible attention to detail, keeping us updated weekly with photo logs and cost reports.

Jennifer L. – Mill Valley, CA

Luxury Kitchen & Living Space Renovation

Finding a general contractor in Marin who is both responsive and detail-oriented is rare. SD & J transformed our outdated layout into an open-concept kitchen and outdoor living space. Their estimates were accurate down to the line item, with zero surprise change orders.

The Patel Family – Fremont, CA

Exterior & Whole-House Structural Upgrade

From custom siding and new structural decking to complete interior updates, SD & J delivered exceptional results. Their team respected our home, worked around our family’s schedule, and delivered a finished product that noticeably increased our home’s market value.