Accessory dwelling unit permit cost

Looking for accessory dwelling unit permit cost in San Bernardino, CA? Call AccessoryDwellingUnit Direct 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

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

Securing permits is a mandatory step that covers city review fees, impact fees, and inspections to ensure your build meets safety codes. These costs vary significantly by city and the scope of your specific project. Because local jurisdictions set their own fee structures, we assist you in estimating these expenses during our initial consultation. We ensure you have a clear picture of all regulatory requirements before you begin. Exact pricing confirmed free on the call.

Frequently asked in San Bernardino

What are the rules for ADU in California?

State law mandates that San Bernardino must allow accessory units on residential lots that meet basic size requirements. You must follow specific height and setback restrictions enforced by the city. Local pros in San Bernardino understand how to keep your project compliant with these state rules. Call us to learn about the current requirements for your specific address.

What are the disadvantages of ADUs?

Building an accessory unit in San Bernardino involves a large upfront investment and increased tax assessments. You should also consider the maintenance responsibilities of being a landlord in San Bernardino. A pro can help you analyze the pros and cons based on your property layout. Call us to discuss if this investment fits your current long-term goals.

What is the accessory dwelling unit permit cost?

Is ADU allowed in Maryland?

Our services focus on California, specifically helping homeowners in San Bernardino build their accessory units. Maryland regulations are not applicable to the projects we manage in this city. If you are looking to build in San Bernardino, we have the local expertise you need. Reach out today for guidance on your specific California property.

How much does an ADU cost in Massachusetts?

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

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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: Arrowhead, Del Rosa, North Park, Hospitality Point, Valley College — and every surrounding area.