+Add your logoOjanen Chiou Architects LLP is a San Francisco architecture firm providing residential and commercial architectural services throughout the Bay Area. Our residential work includes custom homes, renovations, additions, ADUs and JADUs. We provide services from early feasibility and conceptual design through planning approvals, building permits, construction documents and construction administration. Our work emphasizes natural light, efficient use of space, indoor-outdoor connections and thoughtful responses to each client and site.
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OCA's first project, a remodel and expansion of a century-old Victorian on a steep Noe Valley hillside. The project added approximately 1,000 square feet with a two-story rear addition, new garage, expansive windows and landscaped terraces connecting the home to its hillside setting.
This ground-up custom home in Palo Alto reinterprets the California Ranch for contemporary living, with clean forms, abundant natural light, and strong indoor-outdoor connections. Plaster, Western Red Cedar, and dark aluminum windows give the home a warm, modern character. With I-Hsien Lee Landscape Architect.
This renovation transformed a sprawling 1960s ranch into a light-filled contemporary home. A reconfigured plan and front addition create more generous living spaces, while vaulted ceilings and skylights bring natural light deep inside. Large windows, sliding glass doors, and a kitchen pass-through connect the home to the porch and garden.
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | Chiawang Structural Eng | Engineering | 4 | |
| 1 | Buck O'neill Builders Inc. | General contractor | 3 | |
| 2 | Blue Wood Construction Inc. | General contractor | 2 | |
| 3 | Brian Fusco Plumbing | Plumbing contractor | 1 |
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