ADU, Garage Conversion & Permit Plans in Modesto, CA
From your idea to an approved building permit in Modesto.
Get a Free EstimateServices in Modesto
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 Modesto
Modesto is the county seat of Stanislaus County, and residential permit applications are processed through the City of Modesto Development Services Department. We prepare plans for submittal to the local building department and handle plan check corrections through approval.
Our process covers site visit and measurements, design, construction drawings, structural and Title 24 energy coordination, submittal, and corrections. Modesto's housing stock includes a mix of mid-century ranch homes, 1970s and 1980s tract houses, and newer developments in the north and east. Many homeowners here are adding ADUs in their backyards or converting garages to create rental income or multigenerational living space.
We also serve clients in Turlock, Ceres, Riverbank, Oakdale, and other communities in Stanislaus County.
Why Modesto homeowners work with us
We have prepared plans for residential projects throughout the Central Valley, including Modesto and Stanislaus County. Our team manages the full process — from the first site visit through permit approval — so you are not coordinating between multiple consultants.
We work with homeowners who want to add a rental unit, contractors managing multiple projects, and investors expanding their portfolios. Every project gets the same attention to detail regardless of size.
Frequently asked questions
Do I need a permit for a garage conversion in Modesto?
Yes. A garage conversion in Modesto requires a building permit. The plans need to address the change of use, any structural modifications, insulation, egress, and mechanical and electrical systems. We prepare complete drawings for garage conversions in Modesto and handle the permit process.
Can I build an ADU on my property in Modesto?
Yes. California law allows ADUs on most residential lots, and Modesto follows state ADU requirements. Detached ADUs, attached ADUs, and junior ADUs are all options depending on your property. We can assess your lot and walk you through what is possible.
How long do plans take?
Plans usually take 10–15 business days after we complete measurements. City review time in Modesto depends on project type and current department workload.
Do you serve areas near Modesto?
Yes. We serve Turlock, Ceres, Riverbank, Oakdale, Patterson, and other communities in Stanislaus County and the surrounding area.
Planning a project in Modesto?
Get a free estimate.
Call (916) 694-9949 or email david@liberty-drafting.com
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