Don’t build an ADU in the SGV until you read this: Detached vs. Conversion.

Thinking about adding an ADU in the San Gabriel Valley? 🏡 The type you choose, detached, attached, conversion, or junior, makes a real difference in how it fits your life, lot, and long-term plans.

Detached ADUs stand alone in your yard, offering privacy and true independence for rental income, family living, or flexible space. They bring big potential, but you’ll face substantial upfront investment, design restrictions, and city-specific rules, especially in neighborhoods with tighter lot sizes or overlays. Attached ADUs share a wall with your main home and often streamline utility hookups, but they still must meet full dwelling requirements and may trigger unique zoning hurdles based on where your property sits. 🔨

Conversion ADUs, like turning a garage or interior space into a unit, are often more practical for established lots. They save on new foundations but may mean sacrificing storage or parking. Junior ADUs carve out a compact space within the existing footprint of your home, typically with a kitchenette and some shared facilities. While they’re less disruptive to build and fit seamlessly into smaller homes, their flexibility is more limited.

No matter the route, every option demands careful budgeting, a strong understanding of local regulations, and a willingness to navigate plan reviews and design reviews. With layered local codes on size, height, setbacks, and parking, especially in cities like Pasadena, San Gabriel, and Temple City, it’s never a one-size-fits-all process. 📋

Ready to decide which ADU style is the best match for your goals and property in the San Gabriel Valley? Connect with me for local guidance and a step-by-step approach tailored to your needs.