Built on Experience. Backed by Credentials.
Experience alone is not enough. AR&B continually invests in the technical training, safety discipline, and professional development required to perform complex work at the highest level.
Built Through Continuous Learning
Technical expertise alone is not enough to perform the work AR&B executes every day. Complex commercial construction demands contractors operating with the licenses, certifications, industry affiliations, and regulatory expertise required to safely execute highly technical projects while meeting strict code, permitting, and compliance standards.
AR&B maintains the professional qualifications, trade certifications, and industry relationships required to perform complex commercial mechanical work at the highest level.
California Contractor Licenses
AR&B maintains the California contractor licenses required to self-perform complex commercial mechanical construction across all major mechanical trades.
Licensed capabilities include:
• C-20 HVAC Contractor
• C-36 Plumbing Contractor
• C-16 Fire Protection Contractor
• Additional trade licenses supporting complex commercial mechanical construction
Maintaining multiple trade licenses allows AR&B to execute highly coordinated projects across multiple disciplines without relying on subcontracted mechanical trades.
Integrated execution improves quality, coordination, and schedule control.
Specialized Technical Certifications
Many commercial environments require technical certifications beyond standard trade licensing.
AR&B maintains specialized certifications and technical qualifications supporting work in highly regulated and technically demanding construction environments.
Specialized expertise includes:
• Medical Gas Certified Brazers
• NFPA Code Compliance Expertise
• Fire Protection Inspection, Testing, and Maintenance Expertise
• Advanced HVAC Piping and Mechanical System Fabrication
• Complex Commercial Retrofit and Tenant Improvement Expertise
• Code Compliance and Inspection Readiness Across All Mechanical Trades
Complex projects demand technical expertise built through years of field experience and disciplined execution.
Industry Associations
AR&B actively participates in the organizations helping establish the standards, safety requirements, and technical best practices that shape the commercial mechanical construction industry.
Industry affiliations include:
• California Chamber of Commerce
• Mechanical Contractors Association of America (MCAA)
• Northern California Mechanical Contractors Association (MCA)
• National Fire Protection Association (NFPA)
• National Fire Sprinkler Association (NFSA)
• Sheet Metal and Air Conditioning Contractors' National + Bay Area Association (SMACNA)
• American Society of Plumbing Engineers (ASPE)
Industry leadership requires staying connected to the organizations responsible for shaping building codes, evolving safety standards, and technical best practices.
Leadership Beyond the Job Site
AR&B’s commitment to the mechanical construction industry extends beyond project execution.
Throughout AR&B’s history, company leadership has actively contributed to the broader mechanical contracting industry through participation and board leadership roles within major trade organizations, helping shape standards, promote safety, and strengthen the long-term future of the industry.
AR&B believes leadership is measured not only by the projects completed, but by meaningful contributions to the industries and communities the company helps build every day.
Built to Higher Standards
Complex mechanical construction demands more than technical capability.
AR&B combines more than a century of field experience with the licenses, certifications, safety discipline, and industry leadership required to execute technically demanding commercial projects throughout San Francisco and the Bay Area.
Built to code. Built safely. Built to last.