Formally known as the “Egg Basket of the World” for its bustling egg industry in the early twentieth century, Petaluma is now known as a foodie haven in Northern California. Award-winning and charming with delicious fare, Petaluma has restaurants that excite the prestigious Michelin Guide. Petaluma produces world-class beers and ales, acclaimed regional wines, award-winning olive oils, and artisan cheeses that are served in some of the finest restaurants in the nation. 

Commercial contractors around the area have become integral to the town’s flourishing economy. Listed below are nine firms that our editorial team has carefully selected for their services, projects, and accolades.


1383 North McDowell Blvd, Suite 250 Petaluma, California 94954

Creating more than just profitable spaces, STANTEC connects projects personally and advances the quality of life in communities across the globe. For each project, STANTEC combines its diligence with unique insight. Its designers, engineers, scientists, and project managers, innovate together at the intersection of community, creativity, and client relationships. 

STANTEC has a long history of being part of the communities they serve. It started in 1954 as a one-person firm founded in Edmonton by Dr. Don Stanley, a Harvard graduate in environmental engineering. Today it is a public company with a diverse portfolio of clients and projects. It operates in over 350 locations with approximately 22,000 employees. It also has international offices in Australia, Belgium, Canada, Asia, and the United States. Its fifth CEO, Gord Johnston, continues a legacy of tenacious leadership and community focus.

MAD Architecture

145 Keller St, Petaluma, CA 94952

In a MAD Architecture project, the entire community is involved. Founded in 2003, the firm is a design partnership with a strong community base in Sonoma, Marin, and Napa Counties. 

The firm focuses on building beauty and integrating modern green building practices and healthy building materials in its design solutions. Its project types are mostly dwellings, wineries, commercial, civic, and health care projects. With the expertise of principals Mary Dooley, Chris Lynch, and the rest of the team, they apply their extensive experience to the entire process. MAD Architecture is also known for providing high service and award-winning designs at a reasonable price. Its design practice has resulted in happy clients and well-built, award-winning results. 

The firm’s many awards in the past eighteen years include the most recent 2020 PCBC Gold Nugget Award of Merit Honors and the 2020 Metal Construction Association Chairman’s Awards.

Daniel Macdonald AIA Architects Inc.

1500 Grant Ave Suite 200, Novato, CA 94945

For Daniel Macdonald AIA Architects, excellence is built from the ground up. The firm has provided its clients with a full range of architectural services since 1991. People know of it because of its exceptionally diversified practice with projects in Sonoma County and surrounding areas. Over the past three decades, its projects have ranged from mixed-use, commercial, retail, office, winery, civic, education, and residential.  The firm operates under the leadership of president and founder Daniel Macdonald, AIA NCARB. Daniel received a Master of Architecture degree from the University of California at Berkeley after serving in the U.S. Navy. Then, he began his involvement with architectural projects throughout the United States in 1977.

Macdonald AIA Architects is licensed nationally in over eleven states, from New York to Hawaii. It was able to provide design assistance to international clients in Indonesia, England, and Canada. With this extensive and diverse experience, it has gained accreditations and certifications from many organizations. These include the American Institute of Architects, the U.S. Green Building Council, and the National Council of Architectural Registration Boards.


427 Mendocino Ave, Suite #150 Santa Rosa, CA 95404

Established in 2006, Peter Stanley and Mitch Conner combined their thirty years of experience to form ArchiLOGIX. The firm is the convergence of design and strategic planning, built on the belief that there’s a better way to plan and develop construction projects. It is a full-service design and development consulting firm that offers a broad range of experiences. Building projects from the public sector to commercial development, its passion lies in three key areashealth and wellness, manufacturing, and infill development, which support its belief in building better communities. 

ArchiLOGIX helps clients excel in each step of the process. From strategic planning and design to construction and post-occupancy, their entire team is there for its clients. The AIA and USGBC certified firm promises helps clients make their dream a reality. 

James McCalligan Architect

115 4th St Suite A Santa Rosa, CA 95404

Dedicated to creating projects with the highest quality, James McCalligan’s mission is to produce unique, thoughtful design solutions with quality architecture. This is done with respect for the site and regard for the clients’ needs. The firm operates under the leadership of its namesake, James, its principal architect, who earned his Bachelor of Architecture degree from the University of Oregon. 

Because the firm has been in the business for more than three decades, it has completed projects serving the Commercial, Wineries, Retail, Corporate, and Hospitality sectors. It has received many awards and distinctions, proving its excellence and expertise. Some of these include the AIA Merit Award for Design Excellence, Design Merit Award for the City of Arcata, and the Award for Excellence from the City of Sonoma’s League for Preservation of Historic Buildings.

James McCalligan still develops powerful themes that prove appropriate for clients and specific site conditions. Its craft and vision make the client’s dream a reality.

Tierney / Figueiredo Architects AIA

817 Russell Ave, Suite H, Santa Rosa CA 95403

Established in 1980 is Tierney/Figueiredo Architects (TFA), a full-service architectural firm based in Santa Rosa, California. TFA has dedicated its operation to transforming its clients’ visions into architectural realities. Responding to each project’s unique requirements, it develops design solutions that create aesthetic, functional, and economic benefits for its clients and the community. 

TFA is currently under the leadership of Jerold Tierney & Randy Figueiredo. Jerold is a local Salvation Army Advisory Board member and a past member of the Sonoma Valley Citizens Advisory Committee and the Sonoma County Design Review Board. Randy earned his Bachelor of Architecture degree from California Polytechnic State University in San Luis Obispo. He is a member of the American Institute of Architects and the local Salvation Army Advisory Board.

The firm offers a wide range of design, planning, and construction document services to the Sonoma County community and surrounding areas. Its work for private and public clients includes retail, office, industrial facilities, affordable housing, apartments, and custom homes. It is also engaged in the renovation and modernization of commercial and historic structures.

Lafranchi Architecture and Development

100 E St, Suite 204 Santa Rosa, CA 95404

Since its founding in 1992, Lafranchi Architecture and Development has created commercial projects within Sonoma County. The firm is headquartered in Santa Rosa, California, and it firmly believes that each project it builds must provide a functional and aesthetic return for its owner’s investment.

It was founded by Ken Lafranchi, who earned a degree in Architecture from the California Polytechnic State University at San Luis Obispo. Instead of building designs right after graduation, Ken learned the subject “from the ground up” and applied his energy to building construction. He is a licensed California Architect and a General Building Contractor. Currently, he  serves as the Board Chairman for the Boys & Girls Clubs of Sonoma-Marin and is an Executive Board Member of the Sonoma County Alliance. 

The firm’s significant interests include winery design and renewal and redevelopment of underused or outdated urban properties. Its services include architectural design, construction management, and property development.


  • Shahe Demirdjian

    Shahe is an Editor at General Contractors with around four years of experience as a writer and editor in the construction space. Shahe has always had a huge interest in commercial/residential construction and real estate. On top of his experience at General Contractors, he has two years of experience as a Construction Partner Specialist at BuildZoom and six years of experience as a licensed real estate agent. In his work, he takes advantage of his expertise to take complex technical jargon from those realms and transform them into accessible, engaging content, blending his business administration expertise with a degree from Arizona State University with his experiential insights. Expertise: Architecture, Home Design and Build, Home Remodeling Key Highlights: Arizona Real Estate - Licensed Salesperson Education: Arizona State University - Bachelors in Business Administration