Two Story 3 Bedroom ADU for Family in San Diego
Quimby Street, San Diego, CA 92106
Homeowner Story: House younger family
This beautifully designed two-story ADU in San Diego is perfect for families seeking both comfort and functionality. Spanning 1,155 sqft, its well-planned layout creates a warm and inviting atmosphere. The two-story design maximizes privacy, with bedrooms tucked away upstairs for a peaceful retreat, while the main level offers a seamless flow between the kitchen, dining, and living areas – ideal for family gatherings and daily activities.
Blending elegance with practicality, this modern ADU provides the ultimate retreat in the heart of California, making it perfect for both everyday living and entertaining.
Floor Plan:
Two Story 3BR/2BA 30×20 Long | 3BRs Upstairs
Spacious & Functional Two Story ADU Floor Plan
This thoughtfully designed ADU layout is perfect for rental opportunities or extended family living. The main floor boasts a large open-concept layout, featuring a full kitchen with an optional island for added workspace and seating. The downstairs area also includes a full bathroom, a convenient laundry area, and a closet for additional storage.
Upstairs, you’ll find three well-appointed bedrooms, each equipped with its own closet, and a shared full hall bathroom. Additional storage is abundant with two extra hall closets, making organization effortless.
Alternate Build Ready Option
An alternate 1200 sf build-ready floor plan also features a similar three bedroom two bathroom layout with slight modifications to the dimensions. An office has been added to the first floor which could be utilized as a fourth bedroom, along with a first floor patio and a second floor deck.
About Build Ready Floor Plans
Build ready floor plans are pre-designed layouts developed from real projects, ready to be used or modified into a semi-custom plan. Choosing a build ready plan saves homeowners time and money by utilizing designs we’ve already permitted and built. These plans also minimize risk, as their engineering and construction processes are already well-documented.
For homeowners seeking more flexibility, semi-custom options allow for modifications to standard designs without significant additional fees. Adjustments can include layout changes, such as flipping or rotating the plan, customizing windows and doors, or altering finish materials. With semi-custom plans, you get the perfect balance of personalization and efficiency.
Additionally, build ready plans allow us to more accurately forecast costs in early planning phases. Since we’ve built similar units, we understand the engineering and potential expenses involved, providing homeowners with greater confidence and clarity during the process.

Community:
The La Mesa ADU Guide
At SnapADU, our accessory dwelling unit expertise extends throughout the Greater San Diego area, including La Mesa. We’ve efficiently permitted ADUs in this city and have extensive knowledge of La Mesa’s regulations and processes. La Mesa allows for digital submissions with a clear tracking system. Turnaround times at the city are relatively quick and the city staff is very helpful.
La Mesa ADU Fee Waiver Program
In La Mesa, a fee for the plan review is assessed based on several factors, including the floor area of the proposed adu, whether or not the adu will be attached or detached, and whether you will be converting an existing garage into an ADU. Projects that only propose an ADU are exempt from park fees and the first ADU is exempt from Regional Transportation Congestion Improvement Program (RTCIP) fees. Additional units are required to pay the applicable impact fees. As an added incentive for homeowners to pursue ADU projects, the City of La Mesa will waive the first $2000 of permitting fees associated with ADU projects.
Does La Mesa have Pre-Approved ADU Plans?
No, La Mesa has not published pre-approved ADU plans. However, the city put out an ADU Guidebook, which can be accessed through their La Mesa ADU guidelines page. That guide includes several inspirational floorplans. See more about pre-approved ADU plans. You can also see our build-ready plans.
