About Harmony Space Architecture
Harmony Space Architecture is a full-service architecture and design studio based in Washington State, founded on the belief that good design shapes better lives. We specialize in creating thoughtful, sustainable, and inspiring spaces—from custom homes and multifamily developments to large-scale commercial and community projects.
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Our diverse portfolio includes single-family residences, middle housing developments, multifamily housing, condominiums, hospitality environments, commercial towers, retail spaces, schools, cultural institutions, and public projects. Whether you’re building a dream home, planning a multi-unit development, or reimagining a civic space, we bring creativity, technical expertise, and a collaborative spirit to every phase.
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With in-depth knowledge of local zoning, permitting, and housing policies—including Washington’s HB 1110—we are at the forefront of middle housing design, helping homeowners, developers, and communities unlock more flexible, livable, and affordable solutions.
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Our tagline, “Design. Permit. Build.”, reflects our integrated process: we guide projects from concept through construction with clarity, care, and efficiency. Every design we create is intentional—balancing beauty, function, and sustainability.
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At Harmony Space Architecture, we’re passionate about building spaces that elevate everyday life and foster long-term value. Let’s create something meaningful—together.
Yi Xiao, AIA
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WA Licensed Architect | Co-founder & Principal Designer, Harmony Space Architecture
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Yi Xiao is a licensed architect in Washington State and the co-founder of Harmony Space Architecture. She holds a Master of Architecture from Columbia University and previously served for 12 years as managing partner at Preston Scott Cohen, Inc. in Cambridge, where she led internationally recognized, award-winning public projects of iconic architectural significance.
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With extensive expertise in design, permitting, and project delivery, Yi now focuses on multifamily and commercial developments that support vibrant, inclusive, and sustainable communities. Her work bridges visionary design and practical execution, contributing to the growth of livable, future-ready neighborhoods throughout Washington and beyond.
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