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C Hernandez Construction
Lic. #1106454 · Ceres, CA
(209) 241-3765Free Estimate
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Modesto, Stanislaus County· 10 miles from Ceres

ADU Construction in Modesto, CA

Build a permitted, rental-ready accessory dwelling unit in Modesto. C Hernandez Construction handles framing, coordination, and construction from start to finish.

Get a Free ADU Estimate →(209) 241-3765
Lic. #11064545.0 ★ GoogleFree EstimatesFully Insured

ADU Construction in Modesto

The demand for ADUs in Modesto has never been higher. California's streamlined ADU laws have made it easier than ever to add a detached unit, convert a garage, or build an attached suite on your Modesto property. C Hernandez Construction is a licensed general contractor (Lic. #1106454) based in nearby Ceres — we've built ADUs across Stanislaus County and know the permit process, setback rules, and inspection requirements in Modesto inside and out. Whether you want to generate rental income or house a family member, we'll get your ADU built right.

What's Included

Detached ADUs — standalone structures up to 1,200 sq ft
Garage conversion ADUs — fastest, most affordable option
Attached ADUs — addition to the main home with separate entry
Junior ADUs (JADU) — interior conversion up to 500 sq ft
Full permit coordination with the local building department
Licensed crew: framing, MEP rough-in, drywall, paint, finish
Why Modesto Homeowners Choose Us

We've framed homes and built ADUs throughout Modesto's established and new-growth neighborhoods. We know which inspectors work which districts and what they look for — that means fewer correction cycles and faster project completion for you.

ADU Construction in Modesto
Lic. #1106454 · Free Estimates
Licensed & Insured
Serving Modesto & Central Valley
Same-day response
No-obligation estimate
Get a Free ADU Estimate → (209) 241-3765

FAQs — ADU in Modesto

Do you build ADUs in Modesto?
Yes — Modesto is one of our active service areas. We're based in Ceres (10 miles away) and regularly build ADUs throughout the region. Call (209) 241-3765 for a free site visit.
How long does an ADU permit take in Modesto?
California law requires cities to approve complete ADU applications within 60 days. Most cities in the Central Valley process standard applications in 4–8 weeks. We'll help you submit a complete package to minimize delays.
How much does an ADU cost in Modesto?
A detached ADU in Modesto typically costs $120,000–$250,000 depending on size, finishes, and site conditions. Garage conversions start around $65,000. We provide free, detailed written estimates after a site visit.
Can I rent out my ADU in Modesto?
Yes. ADUs can be rented as long-term rentals under California state law. Short-term rental rules vary by city — check Modesto's municipal code. A permitted ADU also adds significant resale value to your property.

See all services we offer in Modesto:

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Reviews

What Clients Say

5.0 on Google
6 verified reviews
ADU Framing – Detached Unit
ADU

"From start to finish it was a great experience. We looked at the plans and got the work done very efficiently — passed city inspections with no problem on the first try, which allowed the rest of the project to move forward. Great price too."

J
Jose Carmona
Verified Google Review
Modesto, CA · ADU Framing – Detached Unit
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Ceres, CA · License #1106454

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