Front Yard 3 Bedroom ADU for Family Members in San Diego
Peterlynn Way, San Diego, CA 92154
Homeowner Story: House younger family
In the Otay Mesa neighborhood of San Diego, this just under 800 square foot accessory dwelling unit was designed as a new home for newly married couple Harry and Irene. Built in front of the primary residence where Irene grew up, the ADU allows the couple to stay close to family while enjoying their own space.
The 3 bedroom, 1 bath layout is compact but highly functional, with a modern design and efficient use of every square foot. The three bedrooms give Harry and Irene a primary bedroom and an office for each person. One standout feature is the shared laundry room, which includes an exterior access door so that Irene’s parents in the main home can also use it. This shared space supports multi-generational living while keeping both households comfortable and independent.
Placing the ADU in the front yard made the most sense for this property as the primary home is set far back on the lot. This layout preserves privacy for both households while making efficient use of the available space.
“How would we describe our overall experience working with SnapADU? Excellent, enjoyable, and stress free.” – Harry & Irene O.
Floor Plan:
3BR/1BA 44×21 L-Shape
Community:
The City of San Diego ADU Guide
With more than 70 ADU projects completed or in progress throughout the City of San Diego, we’ve seen firsthand how the city’s regulations create opportunities that are not available in many other jurisdictions.
One of the biggest differentiators is San Diego’s Affordable ADU Bonus Program, which allows qualifying properties to add multiple ADUs when some units are rented at affordable rates. This has made San Diego a leader in ADU development and has opened the door for homeowners and investors to create additional housing beyond what is typically allowed under state law.
In 2025, the city became the first jurisdiction in San Diego County to adopt AB1033, allowing qualifying ADUs to be sold separately from the primary residence. As of June 2026, only the County of San Diego and the City of San Diego have adopted AB1033.
San Diego also offers significant flexibility in the types of ADUs that can be built. The city allows two-story ADUs, ADUs with garages, ADUs with guest quarters, ADUs with rooftop decks, front yard ADUs, and stacked ADUs for multi-unit projects. We’ve worked on all of these project types throughout the city.
Another unique aspect of San Diego is its setback regulations. Many single-story ADUs can be built with 0-foot side and rear setbacks, creating opportunities on properties where space is limited. However, building too close to property lines can trigger additional fire-rating requirements and construction challenges, which is why thoughtful site planning remains critical even when the regulations appear flexible.
San Diego ADU Permitting
Most ADU permits in the City of San Diego are approved within approximately 3 to 5 months after submission, although timelines vary depending on project complexity and city workload.
Compared to many other jurisdictions in San Diego County, the City of San Diego has some of the highest ADU permit fees. Permit costs often range from approximately $26-$28 per square foot, though smaller ADUs under 500 square feet can benefit from reduced fees closer to $14 per square foot. We maintain a detailed breakdown of City of San Diego permit fees, including plan check fees, building permit fees, impact fees, and inspection fees, in our ADU permit fee guide.
Approximately 10% of our City of San Diego projects are located within the Coastal Zone. While coastal properties often raise concerns for homeowners, many ADUs qualify for exemptions from Coastal Development Permit requirements under the City’s updated Local Coastal Program. Learn more about building an ADU in the Coastal Zone.
Working with an experienced ADU builder helps identify potential permitting requirements early and creates a more predictable path through design and permitting.
