West Seattle is one of the most dynamic neighborhoods in the city for accessory dwelling unit development. Its mix of postwar bungalows, mid-century ranches, and newer construction—set against hillside topography and sweeping Puget Sound views—creates a compelling canvas for well-designed ADUs. Whether you're adding a detached backyard cottage in the Morgan Junction neighborhood, converting a daylight basement in Fauntleroy, or building an attached suite in Admiral, the opportunities are as varied as the lots themselves.
As your ADU architect in West Seattle, Refine Design Architecture brings licensed expertise, local code knowledge, and a deeply collaborative design process to every project. We begin by understanding your property's constraints and your household's goals—whether that's multigenerational living, rental income, a home office, or long-term flexibility. From there, we develop designs that respond to your site's specific light, slope, and setting, producing spaces that feel purposeful rather than tacked on.
Seattle's ADU regulations have evolved significantly in recent years, expanding allowances for lot size, number of units, and owner-occupancy requirements. Navigating this regulatory landscape takes experience. Our team stays current with Seattle's permitting environment so your West Seattle ADU moves through the process efficiently, without unnecessary delays or costly redesigns. From feasibility study through construction documents, Refine Design Architecture is your trusted ADU architect in West Seattle.
