Two Story Duplex 3BR/2BA 48×24 Long

2400 Sq. Ft. Duplex ADU Plan: 2-Story Mirror Image Units

This 2400 sq. ft. duplex plan features two side-by-side units, each designed as a mirror image of the other for a balanced and functional layout. Perfect for rental properties or multi-generational living, this design maximizes both privacy and shared space.

• Total Square Footage: 2400 sq. ft.
• Per Unit Square Footage: 2 mirror-image layouts, each approximately 1200 sq. ft.
• Total Bedrooms/Bathrooms: 6 bedrooms and 4 bathrooms
• Per Unit Bedrooms/Bathrooms: 3 bedrooms and 2 bathrooms per unit

Each unit spans two stories, with a kitchen, living room, one bedroom, and one bathroom on the first floor. The second floor includes two additional bedrooms, another bathroom, and in-unit laundry.

Multi-unit ADU projects are possible in certain circumstances such as multi-family zoned properties or when utilizing the Affordability Bonus ADU Program in the city of San Diego.

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.

Learn more about build-ready and semi-custom options.

Pre-Approved in San Diego

Government Code Section 65852.27(b)(2) requires cities to approve or deny an application within 30 days if the application uses a plan identical to one already approved in that jurisdiction during the current code cycle. This floor plan was previously permitted in San Diego, so if re-used in San Diego, there is another time saving benefit to using this build ready floor plan. Read more about the benefits of pre-approved plans.