Fremont 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 Fremont 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 Fremont 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 Fremont 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 Fremont Customers

Airtight Construction, Inc. provides unmatched expertise in a full range of construction services for Fremont 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


Fremont, CA is located in Alameda County. Incorporated in 1956, it was named after John C Fremont, a famous American explorer, US Senator and Military Governor of the state. When it was formed, Fremont combined Niles, Irvington, Mission San Jose, Centerville and Warm Springs into one entity.

One of the few cities in California to have plenty of land for growth, Fremont today is a growing population and the 4th most populous city in the state. The proximity to the East Bay and Silicon Valley has helped establish the area as a hub for both the tech industries and highly skilled workers. Entrepreneurs from around the world are attracted to the area hoping to make their dreams come true.

Frequently referred to as the Tri-City area by including Newark and Union City, Fremont today is a thriving and prosperous area. Housing is difficult to find and faces rapidly increasing home and rent prices. Retail shopping and popular restaurants help to attract tourists who include it in their visit to the greater Bay Area.