Last updated: September 24, 2026
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.
About this service
Local builders specialize in the specific zoning codes and climate considerations of your region. Searching for builders in your area is the right step when you are ready to break ground and need a team that understands local geography, utility access, and neighborhood aesthetic requirements. These professionals handle the physical assembly of the structure, ensuring it meets all safety and energy standards required by your specific city or county government. Exact pricing confirmed free on the call.
Frequently asked in Pasadena
What are the rules for ADUs in Pasadena?
What does 'accessory dwelling unit' mean?
An accessory dwelling unit (ADU) is a secondary housing unit on a single-family lot, providing independent living facilities. It includes its own kitchen, bathroom, and sleeping area. ADUs can be attached to the main house or be a detached structure like a backyard cottage. They offer flexible housing options. In Pasadena, ADUs are increasingly popular for adding housing density.
What is the cost to build an accessory dwelling unit in Pasadena?
What services are available for ADU units in Pasadena?
Are there grants for accessory dwelling units in Pasadena?
While direct grants specifically for ADU construction in Pasadena can vary, we can help you explore available financing options and incentives. Sometimes, local or state programs offer assistance. Understanding the financial landscape is crucial for any ADU project. We focus on providing accurate cost assessments and guiding you toward the best financial solutions. Our goal is to make your ADU project financially viable.
What is the process for obtaining an ADU permit in Pasadena?
Can I build a detached accessory dwelling unit in my backyard in Pasadena?
Also serving nearby: Glendale · El Monte · West Covina · South Gate · Downey
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Pasadena — population 133,560; about 5,817 residents per square mile across 23.0 sq mi. ZIP codes covered include 91101, 91102, 91103, 91104, 91105, 91106, 91107, 91109.
Neighborhoods served in Pasadena: Old Pasadena, South Lake Avenue, Arakelian, Orange Heights, Linda Vista — and every surrounding area.
Areas we serve
Browse by state, then city.
California (2)
Florida (1)
Illinois (1)
Kansas (1)
Michigan (1)
Ohio (1)
Texas (3)
All of Texas · Abilene · Carrollton · Waco
