ADU, Garage Conversion & Permit Plans in Santa Rosa, CA
From your idea to an approved building permit in Santa Rosa.
Get a Free EstimateServices in Santa Rosa
ADU / JADU Design
Permit-ready plans for detached and attached ADUs and junior ADUs.
Garage Conversions
Convert your existing garage into permitted living space.
Home Additions
Expand your home with a permitted room or story addition.
Remodels
Structural and non-structural remodel plans for permit submittal.
Fire Rebuilds
Reconstruction plans for fire-damaged and disaster-affected properties.
New Home Design
Full construction drawings for new custom homes.
Getting a Building Permit in Santa Rosa
Santa Rosa is the county seat of Sonoma County, and residential permits are processed through the City of Santa Rosa Permit and Resource Management Department. We prepare plans for submittal to the local building department and manage plan check corrections through approval.
Our process covers site visit and measurements, design, construction drawings, structural and Title 24 energy coordination, submittal, and corrections. Santa Rosa has a diverse housing stock — older Craftsman and Victorian homes near downtown, mid-century ranches in established neighborhoods, and newer developments in the north and east. Fire rebuild work is particularly relevant in Santa Rosa and Sonoma County following the 2017 Tubbs Fire and subsequent fires that affected many residential neighborhoods. We have experience preparing reconstruction plans for fire-damaged properties.
We also serve clients in Rohnert Park, Petaluma, Sebastopol, Windsor, and other communities in Sonoma County.
Why Santa Rosa homeowners work with us
We have prepared residential permit plans for properties throughout the North Bay, including Santa Rosa and Sonoma County. Our team handles design, drawings, structural coordination, Title 24 energy compliance, and plan check corrections — all under one roof.
We work with homeowners, contractors, and investors in Santa Rosa and throughout Sonoma County. Fire rebuild projects are a significant part of our work in this region, and we understand the documentation and coordination these projects require.
Frequently asked questions
Do I need a permit for a garage conversion in Santa Rosa?
Yes. A garage conversion in Santa Rosa requires a building permit. Plans must address the change of use, structural modifications, insulation, egress windows, and electrical and mechanical systems. We prepare complete permit-ready drawings for garage conversions in Santa Rosa.
Can I build an ADU on my property in Santa Rosa?
Yes. California law allows ADUs on most residential lots, and Santa Rosa follows state ADU requirements. Detached ADUs, attached ADUs, and junior ADUs are all options depending on your property. We can review your lot and advise on feasibility.
How long do plans take?
Plans usually take 10–15 business days after we complete measurements. City review time in Santa Rosa varies depending on project type and current building department workload.
Do you serve areas near Santa Rosa?
Yes. We serve Rohnert Park, Petaluma, Sebastopol, Windsor, Healdsburg, and other communities in Sonoma County and the surrounding North Bay area.
Planning a project in Santa Rosa?
Get a free estimate.
Call (916) 694-9949 or email david@liberty-drafting.com
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