Extra Large ADU with Garage in Poway
Avenida Florencia, Poway, CA 92064
Homeowner Story: House younger family
Other Features: Garage, Covered porch
Video TourA Thoughtfully Designed Home for Multigenerational Living
This large, custom ADU serves as the ideal landing spot for a younger family relocating from New York to live close to mom and dad. The design delivers independence, privacy, and plenty of room to grow. At 1,500 square feet with a two car garage, this accessory dwelling unit lives more like a single-family home than an ADU!
Inside, vaulted ceilings, skylights, and generous recessed lighting create a bright, open atmosphere. The layout connects the living, dining, and kitchen areas to support both daily routines and family gatherings. The kitchen prioritizes function with abundant cabinetry, a walk-in pantry, and easy flow throughout the space. Thoughtful storage solutions, including multiple coat closets, built-ins, and the garage, keep everything organized.
Large sliding doors open to a spacious covered patio that extends the living area outdoors. This setup encourages year-round entertaining and brings in natural light. The exterior matches the primary residence with white stucco, a tile roof, and aligned rooflines, creating a cohesive look.
Building a Large ADU in Poway
Projects of this size require careful planning to meet local development standards. Poway allows detached ADUs up to 1,500 square feet as long as the structure does not exceed half the size of the primary residence. Homes larger than 1,200 square feet must include fire sprinkler systems, which affects both design and construction.
The city also requires strong architectural consistency. The ADU siding, roofing, and trim must match the main home. Poway requires in-person plan submissions, soils reports, and verification that no attached accessory unit already exists. Permit and impact fees apply to ADUs over 750 square feet, so early feasibility planning is essential for larger designs.
These guidelines help new structures blend into established neighborhoods. Read more about Poway ADU regulations.
The Benefits of Including a Garage
Adding a two-car garage gave this family both practicality and long-term flexibility. The garage provides secure parking, storage, or workspace. Under California regulations, garage square footage does not count toward the allowable ADU size because it is not considered livable area.
It is important to note that garages may follow different setback requirements than the ADU and must meet fire separation standards when attached. Planning for these details early helps avoid surprises during permitting. Read more about building an ADU with a garage.
Floor Plan:
3BR/2BA 63×40 L-Shape with Garage
Community:
The Poway ADU Guide
SnapADU has permitted numerous projects within the city, and we know the city’s regulations and processes very well. Turnaround times at the city are moderate. You can also build up to a 1,500 sqft unit, subject to being not more than half the size of the primary residence, and also subject to required fire sprinklers when >1,200 sqft.
The City of Poway, unlike many other jurisdictions, is strict in its requirement for architectural consistency between the ADU and the primary structure – in other words, the ADU siding, roof & trim must be consistent with the main residence. They will also require a floor plan of the existing residence to confirm there is not an existing attached accessory dwelling unit. Clients should anticipate regular permit fees, as plan check, building permit, and impact fees are not waived for ADUs >750 sqft (impact fees will be proportional to the size of the primary dwelling). Poway requires in-person submissions and soils reports, which do add some processing time and expense.
