Accessory dwelling unit companies

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

Last updated: September 24, 2026

Considering an accessory dwelling unit in San Bernardino? It's a smart move to add rental income or housing for family. With a population density that means many properties have limited yard space, an ADU can be a game-changer for maximizing your lot. We're talking about navigating the specific building codes and zoning regulations that apply here in the Inland Empire. From initial design concepts to understanding the permitting process, our focus is on clarity. You need practical advice that addresses the realities of building in a city like San Bernardino. We help homeowners understand what’s possible and what steps are involved. Don't guess about your ADU project; get straight answers. Call us to get started.

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

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Frequently asked in San Bernardino

What are the disadvantages of ADUs in San Bernardino?

Potential downsides include the upfront cost of construction and the impact on your existing yard. You'll also need to consider how it affects utility bills and property insurance. It’s a significant project that requires careful planning. We can help you evaluate these considerations.

How much does an ADU cost in California?

What are the rules for ADUs in California?

California has state laws designed to encourage ADU development, but San Bernardino has its own local ordinances. These rules cover things like minimum lot sizes, setbacks from property lines, and parking requirements. Understanding these local specifics is essential. We can help you sort out the details.

Is an ADU allowed in Maryland?

This service is for ADU projects in California, including San Bernardino. Regulations for accessory dwelling units differ greatly from state to state and city to city. If you're inquiring about Maryland, you'll need to find local resources specific to that region. We focus on California projects.

What are the rules for ADU in California?

California's ADU laws aim to make building them easier, often setting baseline standards for local cities. This means there are statewide allowances for things like size and parking. However, San Bernardino's specific zoning and building codes are still critical. We can help you understand how these apply.

Grant programs for ADUs in California can exist but often have strict eligibility requirements and limited funding. You'd need to check with state or local housing authorities for current program details. While we focus on the construction aspect, staying informed about potential funding is wise. We can provide project quotes.

Also serving nearby: Rialto · Fontana · Jurupa Valley · Rancho Cucamonga · Riverside

All cities in California →

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

Service area details

223,728residents

3,602per sq mile

8ZIP codes served

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: Downtown San Bernardino, Muscoy, North San Bernardino, Crestline, Mountain View — and every surrounding area.