Home Company » Gallery Docks » Decks » Railing Gangways » Pile Repair Marina Construction Contact Northern California’s Most Dependable Dock Builders Commercial and Residential Marine Construction 1 2 3 4 5 6 7 8 9 10 We build Boat Docks, Deck & Rail, Aluminum Gangways, Seawalls and Marinas. In business since 1971, Mid-Cal Construction is the most dependable and innovative marine contractor in Northern California. We are a fully licensed general engineering contractor with a complete line of custom design, permiting, fabrication, and installation services. Learn More Quality Floating Docks Experienced Deck Builders Glass & Cable Rail Company News: January 14, Mid-Cal Begins Dock Construction for Sausalito’s Waldo Point Copyright © 2021, All Rights Reserved. Mid-Cal Construction specializes in building superior floating boat docks, decks, aluminum gangways, piers, seawalls and marinas. Serving the communities of Northern California, San Francisco Bay Area, Marin County, Sausalito, Larkspur, Tiburon, Belvedere, Mill Valley, Novato, Vallejo, Napa, Redwood Shores, Isleton, Discovery Bay, Sacramento, Bethel Island, California Delta, Sacramento–San Joaquin River Delta, Bass Lake, Lake Tulloch, Point Richmond, Manteca, Oakwood Shores.