Walnut Creek 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 Walnut Creek 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 Walnut Creek 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 Walnut Creek, 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 WALNUT CREEK Customers

By contracting maintenance, renovations, construction 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

Useful Info for Walnut Creek CA

Walnut Creek, CA was settled by Americans following the end of the US Mexican war. Named after a native species of walnut found in proliferation in the area, the first building was a hotel that opened in 1855. It was first used for settlers to the area, and was soon joined by a blacksmith shop and the ever mandatory general store. The area did not really begin to prosper until the railroad arrived in 1891 which allowed settlers to arrive in significant numbers.

Incorporated in 1914, Walnut Creek was the 8th city to join Contra Costa County. The railroad was active in Walnut Creek until the late 1970’s. When the railroad ceased running, it left miles of existing railroad tracks that were eventually turned into the Iron Horse Trail, a well-developed trail used by hikers, bicyclists, pedestrians and runners. The first retail center of record was opened in 1951, and the Walnut Creek of today is a growing city and a significant addition to Contra Costa County.