Your Go-To Partner for All Your Commercial Construction Needs

Serving Martinez, Walnut Creek & the greater Bay Area, Smith & Son offers unparalleled service and expertise with every project.

Experts in Commercial Construction

Whether you have a small or large-scale construction project, you need an experienced partner you can count on to address every last detail at every stage. With Smith & Son, you get everything you need under one roof. What sets us apart as a commercial contractor? An unwavering commitment to quality, safety, and customer satisfaction. It’s the core of our business.

Commercial is Evolving – Let Us Help You Decrease Your Risks

Risk Management Planning

We help our clients minimize risks during construction and engineering process through comprehensive planning including risk identification, document & budget review, qualitative risk analysis, response planning, risk monitoring, and more.

Building Information Modeling (BIM)

As part of Virtual Design and Construction (VDC), BIM enables us to create digital representations of a building before construction to enhance project efficiency and collaboration. We leverage cutting-edge technology and industry best practices for constructability reviews, early clash detection, prefabrication scope, and virtual mock-ups.

Pre-Construction Services

Other Commercial Contractor Services

General Contracting

We manage all aspects of your commercial build from overseeing the construction process on-site to coordinating with specialized tradespeople for flawless execution per approved plans and specs. With meticulous project planning and budget oversight, our teams build retail stores, offices, warehouses and more with a sharp eye for quality control and safety standards.
Rebar bae and land prep for new warehouse construction by commercial foundation contractors in Walnut Creek, CA.
General Contractors on site in hardhats on a commercial construction project in Walnut Creek, CA.

Budgeting & Estimating

Our commercial construction experts create detailed project estimates and budgets factoring in materials, specialized labor, site conditions, contingencies, and fees for accurate planning. We derive fair market pricing and tap into historical data to provide comprehensive upfront budgeting critical for aligning owner expectations with constructability.

Construction & Project Management

Our experienced construction management team seamlessly coordinates every contractor, subcontractor, materials order, and compliance steps tied to budgets, permits and inspections for commercial projects.
A customer and a general contractor having a conversation in Walnut Creek, CA
Smith and Son Specialist in Walnut Creek, CA


Combining architectural design and construction under one roof, our Design-Build teams collaborate closely to streamline plans from concept to completion tailored to your commercial needs and budget.


Before each commercial project, our pre-construction specialists assess site conditions, create drawings, establish sequencing, compile accurate cost estimates and advise on building systems—setting up informed plans for smooth execution. We determine ways to maximize quality while controlling budget factors from day one.
Smith and Son Specialist in Walnut Creek, CA
Two general contractor in Walnut Creek, CA


Our work does not conclude when construction ends – we provide crucial post-construction and project closeout services including securing occupancy permits, commissioning building systems, providing operations/maintenance manuals, conducting owner orientation sessions, and completion of punch lists.

Sustainability & LEED Certifications

We offer specialized sustainability consulting for eco-friendly, energy efficient commercial builds pursuing LEED certification. Our teams help you gain credits across categories like site planning, water use reduction, renewable materials, indoor environmental quality and innovation. We also verify CALGreen code compliance meeting California’s rigorous green building standards.

A commercial contractor in a hardhat in Walnut Creek, CA

Why Choose Smith & Son?

Time Savings

Our integrated design-build approach streamlines construction with unified design and contracting teams working seamlessly together to shorten schedules.

Enhanced Quality Control

With rigorous quality assurance inspections at every milestone and meticulous attention to construction detailing, we boost quality and minimize errors.

Reduced Risk

Experienced under one roof for all construction services, with open communication and transparent cost oversight, we alleviate common pains like budget surprises that put commercial projects at risk.

Our Work


Our Clients Say it Best

We don’t have glowing reviews for nothing. See what our clients are saying.
Arthur S.
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I have several reasons for highly recommending Smith & Son Inc. Our project was the installation of a composite deck over a worn out cement patio. Out of the three quotes we received, Lance Smith not only provided us with a detailed quote quickly, he was the only who followed up to discuss his quote. This discussion clarified our project and saved on the overall cost, putting us within budget. Lance recommended a decking material which we are extremely pleased with. Knowing we were eager to start, Lance found a way to begin our project much sooner than expected. His three man crew was led by a seasoned and experienced foreman, Noe, who checked in with us frequently to make sure we were satisfied. Noe took great pride in his work and was very eager to please. We are very happy with the finished project which exceeded our expectations. We would not hesitate to use Smith & Son again!
Betha A.
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As a Real Estate Director with a portfolio that contains both commercial and residential properties, I am always managing construction in some capacity. After using Smith & Son for one project, they have become our go-to contractor for any and all construction needs. They have completed at least 6 major projects for us (not counting minor alterations and repairs) and the work has all been impeccable with all details paid close attention to. In addition to the quality of the work done, Lance is fantastic to work with. He is responsive, proactive, and up-front. Every project has been completed on-time, and, when any issues have arisen Lance has communicated them clearly with a plan already in place to address them. He will provide multiple options for projects and recommendations as to how things could be done better, more efficient, and less costly. Everyone I have interacted with at Smith & Son has been equally as fantastic, whether working in their office or onsite at jobs. I cannot recommend Smith & Son highly enough; you will not be disappointed.
Kevin T.
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I hired Smith & Son to remodel the home office in our backyard. After getting quotes from several contractors, meeting with Lance was like a breath of fresh air -- he was clear, detail oriented, on top of everything, and took ownership over the project. He cares about quality and is not in the business of squeezing money out of customers -- I feel like he was giving the advice he would give to a friend.

I knew the project was in good hands with him and his team in charge. We had great/easy communication throughout, Lance stopped by to check in on the details, and his team was great. We are really happy with the result and I would hire Lance again in a heartbeat.

If you are deciding between contractors for your project, hire Smith & Son!

Get in Touch!

Smith & Son provides comprehensive commercial contractor services that check every box. Think of us as an extension of your team throughout every aspect of the project.