Quality. Service. Excellence.
For over 35 years, Magnum has delivered the highest quality finishing services across California. Our five divisions, drywall, acoustical ceilings, painting and wallcoverings, plaster, and specialties divisions make Magnum the premier single-source subcontractor for Division 09 and Division 10 needs. From the San Francisco Bay Area to Southern California, Magnum’s integrated approach is defined by our core values.
ALL ONE SAFE TEAM
Our people are our greatest asset. By working safely, respectfully, and collaboratively, we foster a culture that drives success on every job site and at home.
We Tell It Straight
Integrity is the foundation of everything we do. When challenges arise, we communicate directly, find solutions fast, and keep projects moving forward.
ZERO PUNCH
Every task is completed on time, done correctly the first time, and without complaint. That is the Magnum standard.
We Set the Standard
Our team’s commitment to customer service empowers us to respond quickly, perform under pressure, and execute what others consider impossible.
PASSIONATE FOR WHAT WE DO
A positive, proactive approach to every project produces creative solutions and winning outcomes for our clients and our team alike.
Projects Completed in 2025
Experienced Employees and Workers
Years of Experience
MOD Rate
Passionate for what we do.
Excellence in service is not something that we take lightly. Every project and every challenge is an opportunity to exceed expectations and build lasting value with our clients. We approach each job with an energy that’s genuinely contagious because at Magnum,there are no problems, only solutions.
As a recognized industry leader in commercial finishing, Magnum provides the highest quality craftsmanship, products, and communication on every project. Our ability to provide multiple finishing specialties under one roof creates a cohesiveness in planning and execution that eliminates coordination challenges that come with managing multiple subcontractors. We stay current on the latest construction technology, industry trends, and materials to make sure your project consistently stands out.
Serving California and Beyond
The San Francisco Bay Area has served as Magnum’s headquarters for over 35 years, where we service Northern California’s commercial union drywall, ceilings, painting & wallcoverings, Division 10 specialties and plaster needs. Within the last five years we have expanded our footprint with an office in Southern California, offering union commercial painting, wallcoverings, acoustical panel systems and Division 10 Specialties.
CEO Gary Robinson Receives 2024 Scouting America Distinguished Citizen Award
Our divisions work together to create Magnum Synergy
5 Trades | 1 Team | Built Your Way to Your Schedule
Magnum is a union commercial construction company delivering integrated finishing solutions to general contractors and developers in California and beyond. We simplify the finishing process by serving as a single subcontractor across multiple scopes reducing overhead, tightening schedules, and improving outcomes.
We are specialists in commercial drywall, acoustical ceiling systems, painting and wallcoverings, plaster, and Division 10 specialties. Our commitment to quality, transparency, and fluid communication is what allows five different divisions to operate as one cohesive team, which we call “Magnum-Synergy.” No project is too large, and no deadline is out of reach.
Unrivaled finishing expertise
Magnum’s proficiency across five different divisions makes us the go-to finishing contractor for projects of any scale. Many of our craftsmen are cross-trained between trades, giving us a scheduling advantage timelines are aggressive. We partner with industry-leading manufacturers to supply the best materials on every project.
Drywall
Northern California
This is where Magnum started. Our Drywall Division covers metal stud framing, drywall installation and repair, finishing, interior and exterior sheathing, and the installation of insulation, sound-rating systems, and acoustical ceiling finishes. With over 35 years of commercial drywall experience in the Bay Area and Northern California, our team executes with precision on projects of every size.
Acoustical Ceilings
Northern California
Magnum’s Acoustical Ceiling Division provides the full spectrum of commercial and industrial ceiling systems. From standard acoustical tile and grid systems to custom wood ceilings, acoustic wood ceilings, specialty ceilings, baffles, clouds and panel systems we deliver clean-lined, high-performance results that meet even the most demanding design requirements.
Painting and Wallcoverings
Northern California & Southern California
The Painting and Wallcovering Division provides a comprehensive range of commercial and industrial coatings and wall covering systems. Our services include interior painting, exterior and core-and-shell coatings, water-repellent coatings, intumescent (fireproof) coatings on steel and wood, commercial wallcoverings, acoustical wall panel systems, FabriTRAK® and GeoTRAK® stretch wall and ceiling systems, and photoluminescent way-finding systems.
Magnum’s Painting and Wallcovering Division now serves both Northern California and Southern California, bringing our award-winning craftsmanship and proven track record to clients throughout the state.
Division 10 Specialties
Northern California & Southern California
Our estimators and project managers bring over 60 combined years of experience in architectural and Division 10 specialties. While the scope varies by project, we routinely deliver in toilet partitions and accessories, lockers, visual displays, wall and corner protections, architectural and ADA signage, and fire protection equipment. Magnum’s Division 10 Specialties division is now available to clients in both Northern California and Southern California. Contact us to discuss any specialties not listed – chances are, we can help.
Plaster
The Plaster Division has the expertise and precision to deliver quality plaster work on even the most time-sensitive commercial projects. Our scope includes three-coat cement plaster, acoustic plaster, architectural wall paneling, EIFS and DEFS systems, interior plaster, and fireproofing.