Alten Commercial Construction

About Alten Construction

Alten Commercial Construction San Francisco Bay

We are proud to serve the San Francisco Bay Area, including Napa, Sonoma, Solano, Marin, Contra Costa, Alameda, Santa Clara, San Mateo and San Francisco counties.

Alten Construction was established in 1995 by Bob and Shannon Alten with the dream of creating a cohesive construction team that works together to create amazing structures. By placing our clients’ needs first, we have grown from a small public works company to a thriving general contractor with more than 100 employees and more than $75 million in annual revenue.

We treat our clients the way we want to be treated, ethically and honestly. We take pride in our work, so that you can take pride in your finished structure.

Employee type and count

Every member of our team is dedicated to doing their best, every day.

Our goal is to wow our clients, and you can’t do that with average performance.

∼80 Field Staff

∼25 Office Staff

Annual Revenue Chart

Alten Commercial Construction San Francisco Bay

Our Portfolio

Our primary goal is to ensure your complete satisfaction, whether we are constructing a new educational facility or adding seismic reinforcement to an existing structure.


Square feet of finished buildings


Total: Approximately 2,257,000 square feet

Annual Construction Volume

$80m

Bonding Limit

$50m for a single project

$125m aggregate

EMR Rating

0.66