— ADU builder in Modesto, CA

Build a backyard home on the Modesto lot you own.

Detached ADUs, garage conversions, attached units and junior ADUs for owners in Modesto, Ceres, Turlock, Riverbank and Oakdale. Plans, permits and construction under one contract. Licensed and insured.

Why owners here build Long-term rental income · Room for parents or grown kids · A quiet office · More use from a big lot
Small backyard home (ADU)
Licensed & insuredCalifornia contractor, licensed and carrying insurance.
Regional plans usedWe check the free county-and-cities plans before drawing anything new.
Written, itemized quoteA line-by-line price on paper before construction.

How much does an ADU cost in Modesto?

No published survey prices Modesto ADUs alone as of October 2026. The nearest 2026 benchmark, Block Renovation's Sacramento guide, lists garage conversions at $80,000 to $150,000 and new detached units from $150,000 to beyond $300,000. Free regional plans cut design spending; site work and utilities still vary.

Read the Modesto cost guide

Build types

State law lets most single-family lots pair a converted unit, a new detached unit and a junior ADU, as of October 2026. Your yard and garage decide which of these make sense.

Plans and permits · All build types compared

From address to move-in

  1. Lot checkZoning, setbacks, easements and which agency holds your parcel.
  2. VisitMeasurements, the electrical panel and the sewer path.
  3. Plan and permitA free regional plan or a custom set, filed and tracked.
  4. BuildConstruction, inspections and final approval.

The full process

Where we build

Find out what your lot allows

Share the address and what you have in mind. We check the parcel and reply with the build types that fit.

Modesto, Ceres, Turlock, Riverbank and Oakdale.

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