Accessory dwelling unit builders — San Bernardino, CA
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
These are the professionals responsible for the design, permitting, and physical build of your project. Choosing the right builders means finding a team that manages the entire lifecycle of the project, including the complex approval phase with your city. You need specialized builders when you want a turnkey experience that minimizes your stress and ensures quality craftsmanship. We oversee every phase. Exact pricing confirmed free on the call.
Frequently asked in San Bernardino
What's the deal with putting an ADU in my San Bernardino backyard?
Adding a backyard accessory dwelling unit in San Bernardino involves checking your property's lot coverage and setback requirements. The pros we work with can assess your specific yard to see what size and type of ADU will fit best. They'll also consider how it integrates with your existing home's utilities. This ensures your new addition is both functional and compliant with local codes.
How do ADU permits work in San Bernardino?
What are accessory dwelling unit homes like in San Bernardino?
Accessory dwelling unit homes in San Bernardino can range from simple studios to multi-bedroom units. The pros can help you design a home that suits your needs, whether it's for extended family or rental income. They'll discuss options for finishes and layouts that maximize space and functionality. Think of it as a custom addition tailored to your property.
How do I get an ADU quote in San Bernardino?
Are there ADU contractors near me in San Bernardino?
What affects the cost of an ADU in San Bernardino?
The cost of an ADU in San Bernardino depends on factors like size, complexity, and chosen materials. Site conditions, such as sloping lots or the need for utility upgrades, also play a role. The pros will walk you through these considerations during your estimate. They’ll explain how each element impacts the overall investment.
What should I look for in an ADU contractor in San Bernardino?
Also serving nearby: Rialto · Fontana · Jurupa Valley · Rancho Cucamonga · Riverside
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of San Bernardino — population 223,728; about 3,602 residents per square mile across 62.1 sq mi. ZIP codes covered include 92401, 92402, 92403, 92404, 92405, 92406, 92407, 92408.
Neighborhoods served in San Bernardino: Muscoy, Downtown San Bernardino, Delmann Heights, North Central San Bernardino, South Central San Bernardino — and every surrounding area.
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