ADU Construction
GB Construction specializes in custom ADU construction in Modesto, delivering backyard cottages, rental units, and in-law suites built to California code. With 10+ years of local experience, we handle everything — design, permits, and build — so you get more space and more value, hassle-free.
ADU Builders Modesto CA
Design & Planning
We create custom ADU designs tailored to your Modesto property, balancing style, functionality, and California building codes, all with expert local insight.
Our team handles all permit applications, zoning reviews, and city or county approvals, ensuring your Modesto ADU project stays compliant and moves forward smoothly.
From foundation to finish, we deliver top-quality ADU construction with trusted Modesto craftsmanship, energy-efficient systems, and on-site project management.
Final Inspection & Handover
We manage final inspections, walk you through the completed ADU, and provide warranties — so you can enjoy your new space with total confidence.
Why Choose GB Construction for Your Modesto ADU Project
When it comes to ADU construction in Modesto, experience matters. GB Construction brings over 10 years of local expertise, guiding homeowners through every phase, from custom design and permits to quality construction and final inspection. We know Modesto’s zoning rules, setbacks, and energy codes, and we deliver ADUs that add value, style, and functionality to your property. With us, you’re not just hiring contractors, you’re partnering with trusted local ADU builders dedicated to doing the job right.