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about us

Tight Access Excavation, Inc. was founded in 1990 and is headquartered in Sebastopol, California.  We have been dedicated to serving the northern bay area for the last three decades reaching from Sonoma, Marin, Napa and San Francisco Counties. Mike started the company as an Owner/Operator and has grown the company  to now have a fleet of trucks, equipment and dependable employees.

We pride ourselves with the hard work and diligence shown for each job we take on. Founder Mike Sedano is involved in the estimating, customer service, as well as the day-to-day operations of the company.  Mike works in the field along side of his employees to be sure our customers are nothing less than extremely satisfied. 


Tight Access have done two jobs for me recently, one a very large multi faceted custom home excavation, including driveway construction, 65 foundation piers drilled and building pad leveling, and the other a water service job crossing a California rural highway, requiring careful management of the public highway access during construction. In both cases Tight Access were highly skilled, and thoroughly professional and I have no hesitation recommending them.

Mike Korchinsky 
President and Co-Founder
Wildlife Works Carbon LLC

I have used Tight Access Excavation for my grading, excavation, drainage & underground utilities for the last 10 to 15 years.

Mike Sedano & his crews are very knowledgeable & capable. They are well equipped; get the job done right & on time. I highly recommend their company for all earthwork needs.

Tom Redmond
Tom Redmond Construction, Inc.

Tight Access has consistently proven to be competent professionals with exceptionally high standards and quality of work. They come with our highest recommendations!

Meaghan K. Sirvatka 
AES Construction 


Residential - Commercial
General Engineering Contractor
Lic # 687105