Accessory Dwelling Units — Designed with Purpose

An accessory dwelling unit (ADU) is one of the smartest investments a homeowner can make — whether you're creating a private space for aging parents, housing for adult children, a long-term rental unit, or a flexible guest suite that can evolve with your needs.

Design 1 brings the same level of design thoughtfulness to ADUs that we bring to every project. We help you evaluate your options — attached additions, detached structures, garage conversions, or finished lower-level apartments — and guide you through design, permitting, material selection, and full project management. Every square foot counts in an ADU, and we design them to feel complete, comfortable, and beautifully considered.