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Dan Ionescu Architects & Planners (DIAP) is an experienced and versatile design firm based in the San Francisco Bay Area. Founded in 1982, DIAP's portfolio includes work on four continents, from strategic regional plans to mixed-use developments to single family homes. Dan Ionescu brings his site-specific approach and extensive international experience to each project, and is committed to close communication with clients. DIAP is a diverse, collaborative team that finds elegant solutions for complex problems, and produces functional, beautiful, cost-effective, and sustainable designs.







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