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OpenScope Studio

Full-service San Francisco Architectural Practice Specializing in Smart Solutions to Complex Design Problems

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Wilshire Boulevard from the new David Geffen Galleries at LACMA designed by Peter Zumthor, photo by the Author Mark Hogan

Notes from the California Infill Summit: Inside SB 1116’s Fix for SB 1123

I attended this year’s California Infill Summit, hosted by the Council of Infill Builders in Los Angeles.  The land use panel …

SB 684 and SB 1123 housing

SB 1123 & SB 684: Density Calculations and Vacant Lots Explained 

Two recent HCD Technical Assistance letters clarify how density and existing homes are treated under SB 684 and SB 1123, providing a clearer framework for evaluating small-lot infill opportunities in California.

Multifamily ADUs in California - converted garages, a man walking his dog in front of a unit

A 2026 Guide to Multifamily ADUs in California

Multifamily ADUs in California can be added for a fraction of the cost of new construction and the land is …

Los Angeles ADU conversion on a multifamily property with ground-floor residential units

New Los Angeles ADU Ordinance: Height Bonus and Commercial Conversions Explained

Los Angeles has proposed a new ADU ordinance that updates the city's approach to accessory dwelling units, and two changes …

Kitchen and living room of an ADU in Mission co-housing

San Francisco Coliving and Cohousing Code Reform: “Shared Housing for All” Passes the Board of Supervisors

San Francisco coliving just took a major step forward, as The San Francisco Board of Supervisors voted to remove the …

A Shift in the City’s Fabric: Understanding San Francisco’s New Family Zoning Plan

San Francisco’s newly adopted Family Zoning Plan marks a major shift in how the city thinks about growth, equity, and …

Repurposing Chain Stores to housing in California

Repurposing Chain Stores in California: How State Housing Laws and Zoning Reforms Are Rewriting Commercial Land Use

A new wave of California housing laws is turning big-box retail sites into test cases for infill housing and mixed-use redevelopment.

SANDAG Housing Technical Assistance Program Wins APA Award

We’re proud to share that the SANDAG Housing Technical Assistance Program has received the 2025 Best Practice Merit Award from …

SB 684 housing shortage, an image of split lot multifamily

Unlocking Housing Opportunities with SB 684 and SB 1123

California’s housing shortage has been a persistent challenge, with a deficit of nearly 3.5 million homes statewide. This crisis is …

AB 1893: A Strategic Builder’s Remedy Update in California

As California continues to grapple with a severe housing shortage, legislative efforts to boost housing production are important drivers in …

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