The Filing at 150 Hayes Street
SF YIMBY reported the permit filing for an office-to-housing conversion at 150 Hayes Street on 7 August 2026. Emerald Fund and SDG are jointly responsible for the application. The filing covers the existing structure and one added story of 15,530 square feet. The building footprint stays as it is.
The unit count is 104 apartments, one fewer than the initial announcement. The building dates from 1968 and sits on Hayes Street between Polk Street and Van Ness Avenue, one block from City Hall and two blocks from the Civic Center BART station.
Households Beside the Room Supply
The filing adds residences. It adds no guest rooms, no meeting space and no restaurant. That is the whole of the supply-side change on this block.
The demand side is 104 households arriving beside hotel inventory that already trades here. Treat 104 as the working number. One unit left the count between announcement and filing.
Food and Beverage Spend With No Published Outlet
The filing publishes no ground-floor commercial space, no restaurant and no bar. The record SF YIMBY cites does not say whether the building will carry either.
The arithmetic follows that gap. 104 households with no on-site outlet spend mornings, evenings and weekends on the surrounding blocks. The nearest dining and retail frontage runs along Polk Street and Van Ness Avenue, two blocks from the site.
A breakfast room built for a business transient mix reads against a resident base that works from a shared desk upstairs. The comparison belongs in a covers model before a menu changes.
The Shared Amenity Programme
Residents will share amenities with 101 Polk Street, per reporting by J.K. Dineen in the San Francisco Chronicle that SF YIMBY cites. The shared list is the existing fitness centre at 101 Polk and a new co-working space.
That list is the building's own service offer: fitness and workspace across two addresses, with no food and beverage attached. An operator chasing long-stay guests in this corridor can put both line items on a comparison sheet and check the hotel offer against them on gym and desk.
Amenity-led residential product sets the floor for what a long-stay guest expects in the district.
What a Long-Stay Read Requires
104 apartments do not convert into a room-night forecast. The filing publishes no unit sizes, no tenure, no rent level and no occupancy date. Rental against ownership is not stated.
Three questions come before any figure reaches a budget. Are the units rentals or condominiums. What year delivers. Does the 101 Polk arrangement extend to short-stay sublets. The record answers none of them.
The usable figure today is the count of households. It is 104.
The Vacancy Context
San Francisco office vacancy stands around 30 percent according to city records, as SF YIMBY reports. The market has run four straight quarters of positive net absorption, and the two most recent quarters were the strongest since 2019.
No major office-to-housing conversion is under construction in the city. Forge Development Partners terminated its agreement to convert 785 Market Street, per Sarah Klearman's reporting in the San Francisco Business Times. Plans went in recently for 575 Sutter Street, 901 Market Street and 2300 Stockton Street.
That is a stack of filings against a construction count of zero. A demand model that carries a delivery date for any of these addresses carries an assumption.
The Reuse Record on the Same Campus
150 Hayes Street was one of four properties around Van Ness Avenue and Hayes Street in the vacated California State Automobile Association campus. The other three are housing: 101 Polk Street, 150 Van Ness Avenue and 100 Van Ness Avenue.
100 Van Ness Avenue is the biggest office-to-housing conversion in the city's history, per SF YIMBY. Emerald Fund developed all three.
Emerald Fund returns to this block as the party that has delivered it before. That record carries the case for the scheme.
The Investment Side
SDG is a San Francisco investment firm founded by Jack Sylvan, a former Senior Vice President at Brookfield Properties. His project list includes Pier 70, 5M and Stonestown Galleria.
The filing names no hotel operator, no architect and no general contractor.
The Next Filings to Track
The filing date is the start of record. No construction start is published.
Three items will move it. The permit moving from filed to issued. The unit count on the next revision. A ground-floor commercial tenant in a later filing.
Until one of them lands, the operator read is 104 households, a two-item amenity programme and a two-block walk to the nearest dining frontage.