Architectural Design for Accessory Dwelling Units (ADUs)

The contract seeks the development of standardized, pre-approved architectural designs for Accessory Dwelling Units (ADUs) that align with Seattle Municipal Code 23.44.110, ensuring compliance with local regulations while accommodating lots ranging from 4,000 to 8,000 square feet. The designs must prioritize affordability, energy efficiency, and seamless integration into existing neighborhood contexts, with the goal of increasing housing density without compromising aesthetic or structural harmony. The project requires the creation of multiple design options that can be easily replicated and scaled across diverse residential zones, reducing permitting barriers and construction costs while promoting sustainable living. The work is being issued as a subcontract under the Office of Planning and Community Development in Washington, with a response deadline of July 4, 2026. The North American Industry Classification System code 541310 indicates the scope falls under architectural services, emphasizing the need for professional design expertise. While no set-aside provisions or specific point of contact are detailed, the project is positioned to support Seattle’s broader housing goals by streamlining ADU approval and construction processes. The emphasis on standardization suggests the output will serve as a toolkit for developers, builders, and homeowners seeking to add lawful, high-quality secondary units to their properties in compliance with city guidelines.