The filing
Permits for 150 Hayes Street went in on 7 August 2026. The filing covers an office-to-housing conversion. Emerald Fund and SDG are jointly responsible for the application.
The building dates to 1968. It sits between Polk Street and Van Ness Avenue in Civic Center. The source publishes no storey count for the existing structure and no floor area.
One story, 15,530 square feet
The application adds one story. That story spans 15,530 square feet. The footprint does not change.
The added floor is the whole of the published new construction. The record carries no facade scope. A reskin does not appear in the filing as reported.
104 apartments
The filing yields 104 apartments. That is one unit below the first announcement. The source does not explain the drop.
Unit sizes, tenure, rent, affordable count and unit mix are all unstated.
The campus that already converted
150 Hayes Street was one of four properties on the vacated California State Automobile Association campus around Van Ness Avenue and Hayes Street.
The other three are housing today: 101 Polk Street, 150 Van Ness Avenue and 100 Van Ness Avenue. Emerald Fund developed all three. The source calls 100 Van Ness the biggest office-to-housing conversion in the city's history.
The new building shares amenities with 101 Polk Street, per J.K. Dineen in the San Francisco Chronicle as cited. The shared list is the existing fitness centre and a new co-working space.
Three filings behind it
Three conversion plans reached the city in recent weeks: 575 Sutter Street, 901 Market Street and 2300 Stockton Street.
Each is an office address with a housing plan filed against it. The source records submission only, with no approval status and no schedule.
Nothing is under construction
No major office-to-housing conversion is under construction in San Francisco. Forge Development Partners terminated its agreement to convert 785 Market Street, per Sarah Klearman in the San Francisco Business Times as cited.
Treat 7 August 2026 as the filing date. The record carries no start date.
The vacancy read
Office vacancy stands around 30 percent according to city records. The market has posted four straight quarters of positive net absorption. The two most recent quarters were the strongest since 2019.
The absorption series carries no publisher in the SF YIMBY report.
The people behind it
SDG is a San Francisco investment firm. Jack Sylvan founded it. He was a Senior Vice President at Brookfield Properties and worked on Pier 70, 5M and Stonestown Galleria.
Emerald Fund carries the campus record on this block. One application holds both firms.
What the permit leaves open
The record gives no construction start, no completion date, no contractor, no architect and no cost. Ground-floor commercial space and a hotel component are both unstated.
A work letter cannot be drawn from this filing. A capital schedule cannot be set from it.