William Duff Architects

William Duff Architects (WDA) designs thoughtful, timeless architecture shaped by clarity, craftsmanship, and a deep connection to place. Founded in San Francisco, the firm works with clients across diverse regions to create enduring residential and hospitality environments tailored to each client’s story and vision. Their work responds to context with an artist’s sensibility—knowing when restraint strengthens a design and when expression brings it to life. With capabilities across multiple sectors, the firm is particularly recognized for its design leadership in high-end residential and hospitality environments.

Backed by deep technical expertise and disciplined project management, WDA approaches every project as a collaborative partnership—prioritizing service, communication, and thoughtful execution from concept through completion.