About Us


About Tight Access Excavation Inc.

A locally owned and operated business, Tight Access Excavation, Inc. was founded in 1990 by Mike Sedano. Located in Sebastopol, California, our company provides horizontal directional drilling and excavation services throughout Sonoma, Marin and Napa Counties.

We take great pride in the expertise of our team members and the drilling and excavation jobs we do. Mike Sedano is involved in estimating every project, as well as the day-to-day operations of the company. He works in the field alongside our employees to ensure that every one of our customers is nothing less than extremely satisfied. You’ll also find Gloria Sedano, Mike’s wife and office manager, at the front desk or on the phone, making sure that all of our customers’ needs are met.

We strive to use the best and most advanced techniques to assure that our projects are done with exceptional quality. We approach each job, whether large or small, with the same close attention to detail, hard work and diligence. As a local, family-run business, we make sure that we get the job done right and that we can be proud of the work we leave behind.

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, San Mateo, CA

Mike and his crew were great! They were on time, they worked hard the entire time they were here, which was amazingly quick for what they did! When they were done and every step of the way, they cleaned up and took care to make sure what they did met our approval. We appreciated that Mike showed up on the first day to make sure everything was going well, and he left us in the very capable hands of his foreman.
— MV, Homeowner, Rohnert Park