What is an Attached ADU?
An attached ADU is an independent living space that is physically connected to the primary home. It may extend from the side or rear of the home, be incorporated into an addition, or combine existing space with new construction.
WHY CONSIDER AN ATTACHED ADU
Multi-
Generational
living
Guest Accomodations
Potential
Rental Use
More Useable Living Space
Long-Term Flexibility
ATTACHED vs DETACHED ADUs
ATTACHED
Works directly with the existing home and may help preserve more yard space.
DETACHED
Provides greater separation and design independence but may involve different site, utility, and access considerations.
Designed Around Your Existing Home
Because an attached ADU connects to your home, Cedar considers how the new space will work with existing conditions.
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Existing foundation and framing
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Exterior wall conditions
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Rooflines
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Floor elevations
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Structural modifications
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Existing electrical service
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Plumbing locations
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HVAC systems
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Drainage
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Windows and doors
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Access into and around the property
The Cedar ADU Process
01
Understand Your Goals
How will the ADU be used?
04
Coordinate Design & Budget
Align design decisions with construction realities.
02
Evaluate the Property
Review the home, site, access, and utilities.
05
Preconstruction & Permitting
Prepare the project for construction.
03
Define the Project
Establish scope and major considerations.
06
Build
Manage construction through completion.
Frequently asked questions
Find Out What Makes Sense for Your Property
Before deciding whether an attached ADU is the right solution, start with your property, goals, and overall investment.
Cedar helps North County San Diego homeowners evaluate those questions early and develop a realistic path from planning through construction.
Find Out What You Can Build
Fill out the form below, and a member of the Cedar team will get back to you as soon as possible to schedule your consultation.