Looking for accessory dwelling unit near me in Modesto, CA? Call AccessoryDwellingUnit Experts for a contact a provider — no obligation. Licensed adu builders serve Modesto and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

Searching for an ADU near you is the first step toward finding a local team that understands your neighborhood’s specific requirements. Whether you are looking for a detached cottage or an attached unit, working with local experts ensures your project follows regional ordinances and climate considerations. This approach is best when you are starting the planning phase and want to see examples of nearby work or need a team that can easily visit your property for a consultation.

Frequently asked in Modesto

What are the disadvantages of ADUs in Modesto?

How much does an ADU cost in California?

The cost of an ADU in California, including Modesto, varies significantly based on size, materials, and site conditions. Factors like foundation work and utility connections are major cost drivers. A personalized quote from a local professional is the most accurate way to determine the expense for your project.

What are the rules for ADUs in California?

Is an ADU allowed in Modesto?

Yes, ADUs are generally permitted in Modesto, with specific regulations outlined in their local zoning and building codes. Modesto supports ADU development to address housing needs. A quick call can confirm the exact requirements for your location.

What are the permitting steps for ADUs in Modesto?

Permitting for ADUs in Modesto involves submitting detailed plans to the city for review, ensuring compliance with all building and zoning codes. This process can be intricate. The pros can guide you through each step to ensure everything is done correctly and efficiently.

Can I build a detached unit in my backyard in Modesto?

Building a detached unit, which is a type of ADU, in your backyard is often a viable option in Modesto, provided you meet the city's specific zoning and building regulations. A professional assessment will determine the feasibility for your property and design preferences.

Also serving nearby: Manteca · Tracy · Stockton · Merced · Antioch

All cities in California →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

218,915residents

5,049per sq mile

8ZIP codes served

Serving all of Modesto — population 218,915; about 5,049 residents per square mile across 43.4 sq mi. ZIP codes covered include 95350, 95351, 95352, 95353, 95354, 95355, 95356, 95357.

Neighborhoods served in Modesto: Salida, Ceres, Downtown Modesto, North Modesto, West Modesto — and every surrounding area.