San Mateo Construction Company & General Contractor

Highly experienced in jobs of all types and sizes

Airtight Construction, Inc. is a premier construction company and general contractor in the San Mateo area with extensive experience in a wide range of services. We’ve become the company of choice for:

We have worked for decades with owners and managers of occupied commercial buildings, industrial manufacturing plants, and residential dwellings throughout the San Mateo area and beyond. Headquartered in Concord, California, our fully equipped and professionally staffed organization can meet any construction, renovation, or retrofit need. We can serve as a single point of contact for the most complex and time-constrained projects.

We are committed to the responsive delivery of flawless craftsmanship and the industry’s best customer service for our many San Mateo area, SF Bay Area and Northern California clients. We bring proven expertise and time-tested techniques to every job. While most companies rely on subcontractors for major parts of their work, we do everything in house. This allows us to maintain tight control over quality and scheduling of the work performed. Our cleanup crews work daily to keep the job-site clean, safe, and usable at all times.


Here are just a few of the construction partners and projects whose vision we have brought to life:


Committed to the Satisfaction of Our San Mateo Customers

Airtight Construction, Inc. provides unmatched expertise in a full range of construction services for San Mateo companies and homeowners. We stand behind our work and offer one of the best guarantees in the business. Our promise is to provide professional construction, retrofit, and repair services quickly, efficiently, and with the least amount of disruption.

By contracting maintenance, renovations, construction services or repair through ATC you will get construction experience, unmatched expertise, a reputation for quality and a single source for a full-range of services. Our promise is to provide professional construction, retrofit and repair services quickly and with the least amount of disruption.


I want to express my greatest thanks for the excellent roofing, siding replacement, ADA hand rail, and concrete work you performed. Kaiser Permanente and PG&E were very pleased with your work. The planning and execution of the job was very evident and the workmanship cannot be matched. I have and will continue to recommend Airtight Construction.

Vern Cummings, Park Shadelands Business Park


San Mateo, CA was visited in 1827 by Capt. Frederick W. Beechey and he was awed by the bucolic vista of gentle hills dotted by cattle, horses and deer. Part of the Mission of San Francisco, the area was first settled by the Spanish looking for farmland to feed the settlement. The fertile soil and mild Mediterranean climate made the future San Mateo perfect for their purpose.

During the 1850’s, wealthier San Franciscans were also drawn by the mild climate to build summer homes. They built impressive mansions, some of which survive to this day.

The founder of the Bank of Italy (which later became the Bank of America), A. P. Gianinni lived here most of his life. The mansion that he built, Seven Oaks, is listed in the National Register of Historic Places.

In the early 20th century, Japanese immigrants arrived who were attracted to both the flower industry and the local salt ponds. Their influence is felt today in San Mateo Central Park where you will find an ice-skating rink and a beautiful Japanese Garden.

San Mateo today is a wealthy and thriving city complete with many activities for residents and tourists alike including Curi Odyssey, a science and wildlife center for kids, Coyote Point recreation area with its large playground, picnic areas and walking trails, and Coyote Point Drive Park for a marina and fishing.