Neil Kelly Inc

Neil Kelly is a long-established design-build remodeling and construction company offering dedicated ADU design and construction services across the Pacific Northwest. Its ADU division provides custom design/build solutions for homeowners looking to add independent living space for family, guests, rental income, or other uses. The company explicitly offers new detached ADUs, attached ADUs, garage conversions, basement conversions, attic conversions, and home-addition ADUs.

Neil Kelly’s ADU approach combines custom design, planning, permitting, project management, and construction. The company emphasizes designing ADUs around the existing property, intended use, budget, and local regulations rather than relying solely on standardized plans.

The company has operated since 1947 and describes itself as a full-service design/build firm. It has completed more than 30,000 projects across Oregon and Washington and maintains locations in Portland, Eugene, Bend, and Seattle.

ADU Services

• Custom ADU Design
• ADU Construction
• Detached/Freestanding ADUs
• Attached ADUs
• Garage Conversion ADUs
• Basement Conversion ADUs
• Attic Conversion ADUs
• Home Addition ADUs
• ADU Planning & Permitting
• Design-Build Project Management
• Energy-Efficient ADU Solutions
• Solar-Powered ADU Projects

Neil Kelly also showcases a Southeast Portland ADU project that was designed as a compact, energy-efficient, solar-powered tiny-home ADU for the short-term rental market