Compare the benefits, costs, and timelines of building an ADU versus expanding with a home addition. Find out which is right for your property.
When you’re running out of space, two of the most common solutions are building an Accessory Dwelling Unit (ADU) or adding square footage with a home addition. Both can dramatically improve your property — but the right choice depends on your goals, budget, and lot conditions.
An ADU (also called a granny flat, casita, or backyard cottage) is a self-contained living unit with its own entrance, kitchen, and bathroom.
Homeowners in San Diego choose ADUs for:
A home addition increases the square footage of your existing house. Instead of creating a separate unit, it extends your current layout.
Popular additions across San Diego include:
At Fabrick Construction, we’ve delivered both ADUs and home additions across the county — from compact garage conversions in North Park to spacious multigenerational retreats in Carlsbad.
We’re known for:
Every property is unique. Whether you’re in La Jolla, Encinitas, Chula Vista, Carlsbad, Point Loma, or anywhere in San Diego County, we’ll help you choose the right path with confidence.
👉 Book your free consultation today and find out whether an ADU or a home addition is the best choice for your home.
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Step-by-step checklist to plan a legal, comfortable garage conversion: structure, insulation, egress, fire rating, utilities, and inspections.