Welcome to CAL Custom Building Services

Sonoma County's Home Performance, Energy Efficiency, and Building Experts.

Who We Are

CALCBS is Santa Rosa and Sonoma County’s premier expert in Building, Renovation, Energy Efficiency, and construction-related services.


Home Performance

Comfort + Health + Safety + Energy Efficiency

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New Construction

Build Your Dream

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Transform Your Home

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Green Building

Eco-Friendly Homes

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Development Work

Construction Development

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Construction Consulting

Technical Oversight

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Who We Are

Craig Lawson, President of CALCBS, has been in the construction, development, consultation and energy efficiency fields since 1976. His years of experience, coupled with professional certifications make him an expert in entitlement, development, building and energy efficiency related fields.

Mike Fitzpatrick, head of construction operations for CALCBS, has been in the construction, development and energy efficiency fields since 1984.  Mike is a licensed General Contractor who also has professional certifications in the energy efficiency fields.

Trevor Patereau, carpenter and drywall expert, has been installing and finishing drywall for 20 years.  Be it a smooth wall, skip trowel or simple knock down texture, Trevor can match any finish.

Jesus Cortes, carpenter’s helper and energy technician, has been in the construction field in for 15 years.  Jesus is an expert when it comes to working in tight spaces.  Be it installation of a sump pump, repairing duct work, air sealing, envelope penetrations in the attic or crawl space, repairing or adding insulation, or installing a moisture barrier, Jesus has mastered all of these functions.

Cathe Correia, Administrative Assistant has worked in the construction industry since 1986.  A graduate of El Molino High School and Eastern New Mexico University, she has a good understanding of the trades, and knows how to be a good team player.

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Services We Offer