Cost to build accessory dwelling unit — Chico, CA
Last updated: September 24, 2026
What affects the price
Building an ADU involves variables that shift your total investment. The footprint size and complexity of the architectural design are primary factors. Are you planning a detached unit that requires new utility trenching, or is this a garage conversion that uses existing plumbing? Site accessibility, soil conditions, and your choice of finishes—like luxury flooring versus standard options—also play significant roles. Permitting fees vary widely depending on your local municipality and current zoning requirements. Exact pricing confirmed free on the call.
About this service
The expense of building an ADU varies based on site preparation, whether you need to run new sewer or electrical lines, and the level of interior customization you choose. Larger custom builds naturally require more materials and labor than simpler conversions. We provide exact pricing confirmed free on the call.
Frequently asked in Chico
What's the difference between an ADU and a mother-in-law suite in Chico?
An accessory dwelling unit, or ADU, is a secondary housing unit on a single-family lot. This can be attached or detached. A mother-in-law suite is often a part of the main house. It's designed for a family member. The key is it's a separate living space. We can help you explore options for either in Chico.
How do I find accessory dwelling unit services near me in Chico?
What are the general rules for an accessory dwelling unit in Chico?
What factors influence the cost of an ADU in Chico?
Several things affect the cost of an accessory dwelling unit in Chico. The size of the unit is a big factor. So is the type of construction. Site conditions, like how easy it is to access your yard, also play a role. The materials you choose matter too. We can help you get a quote.
How is ADU construction handled by local pros?
Are there accessory dwelling unit grants available in Chico?
Also serving nearby: Redding · Roseville · Sacramento · Elk Grove · Vacaville
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Chico — population 101,301; about 2,934 residents per square mile across 34.5 sq mi. ZIP codes covered include 95926, 95927, 95928, 95929, 95973, 95976.
Neighborhoods served in Chico: Downtown Chico, Esplanade, Muir Creek, Barber, Cohasset — and every surrounding area.
Areas we serve
Browse by state, then city.