ADU Builders in Modesto, California
Whether you want a rental unit, a home for aging parents or a studio for adult kids, building an ADU in Modesto has never been easier under California's ADU laws. Our team plans every project around the long hot summers and valley fog in winter typical of Modesto.
Typical cost
$126k–$281k
Permit time
6–10 weeks
Est. rent
$1,250+/mo
Population
218,000
Popular ADU types in Modesto
Our most requested projects in Modesto are garage conversions and junior ADUs (JADUs). Many Modesto parcels built between the 1950s and 1980s have wide rear yards that fit an 800–1,200 sq ft detached unit without touching the main house.
Design-wise, Modesto homeowners in the Central Valley tend to favor practical ranch and farmhouse cottages with high-efficiency HVAC.
Building an ADU in Stanislaus County
Every Modesto ADU we build is engineered around local conditions — especially expansive soils, agricultural-adjacent zoning and extreme heat. We prepare complete plan sets so the city can approve within the state's 60-day review window, typically 6–10 weeks here.
At $1,250–$2,050 per month in rent, a new ADU in Modesto can pay for itself in roughly 10.3 years.
Modesto ADU FAQs
How much does it cost to build an ADU in Modesto?
Most Modesto ADUs we build land between $126k and $281k, depending on size, site work and finishes. Garage conversions sit at the low end; custom two-story units at the high end.
How long does ADU permitting take in Modesto?
State law requires cities to act on complete ADU applications within 60 days. In practice, Modesto permits typically take 6–10 weeks when plans are submitted complete — which is what our in-house drafting team focuses on.
What can I rent an ADU for in Modesto?
Based on Central Valley rental trends, a new 1-bedroom ADU in Modesto commonly rents for $1,250–$2,050 per month, putting typical payback around 10.3 years.
What are the biggest challenges for ADUs in Modesto?
In Modesto and the wider Central Valley, the issues we plan around most are expansive soils, agricultural-adjacent zoning and extreme heat. We review these during a free feasibility check before you commit.
Is garage conversions a good option in Modesto?
Yes — garage conversions are among the most popular projects we build in Modesto. Newer subdivisions in Modesto often have tighter side yards, so we frequently recommend attached ADUs or converting an existing garage to keep costs down.
ADU builders near Modesto
Get a free ADU feasibility check in Modesto
Tell us about your lot. We'll review zoning, setbacks and utilities and send a ballpark budget — no obligation.