The Treasure Island Development Authority published its Fall 2026 Upcoming Development Projects Forecast on 14 September 2026. Its table for Treasure Island and Yerba Buena Island carries seven projects, with estimated starts that run from November 2026 to 2030.
A day-use operator reads that table for sellable hours. The pipeline adds 490 homes and 240 care beds across the two islands. Every row is residential or institutional.
What the city's day-use market publishes
hotelSlots lists 562 San Francisco properties for hourly and daytime stays, from a five-star property on Mission Street to airport hotels on the bay. Dayuse publishes an average day-room price of $119.61 in San Francisco and names The Mosser Hotel as its recommended hourly property.
Engine puts the city's average nightly rate at $165 across 3.1 million public rate observations from May 2024 to April 2026. That figure ranks 18th of 50 markets and sits 11 percent above the $148 median.
The three rows with a named builder
Three of the seven rows carry a developer and a general contractor. The behavioral health building on Parcel E1.2 lists Cahill as contractor and Mercy Housing with the San Francisco Department of Public Health as developer, 240 treatment beds and supportive housing, a November 2026 start, a July 2028 end and an estimated value of $70 million.
The senior building on the same parcel lists Mercy Housing with 100 residential rental units from February 2027 to October 2028. Parcel IC4.3 lists Cahill with John Stewart Company and Catholic Charities for 150 residential rental units from June 2027 to May 2029.
Those three rows hold the earliest starts on the table. Each one carries a 41 percent small-business enterprise goal and names TIDA@sfgov.org as the contact.
The four parcels that follow
Treasure Island Community Development holds the remaining four rows, all residential, with the general contractor listed as TBD and no published value. Parcel B1-B2 adds 117 rental units from 2027 to 2029. Parcel C2.3 adds 76 condominium units from 2027 to 2029. Parcel C2.1 adds 265 condominium units and Parcel C3.5 adds 160, both from 2028 to 2030. Each carries the 41 percent goal and projectinquiries@tisf.com as the contact.
The rooms the agreements permit
The project's CEQA record, filed with the San Francisco Planning Department, sets the entitlement at up to 8,000 residential units, up to 140,000 square feet of commercial and retail space, up to 100,000 square feet of office space, up to 311,000 square feet of adaptive reuse across three historic buildings and 500 hotel rooms. Build-out runs over an approximately 15- to 20-year period.
The authority's forecast carries no row, no start date and no value for lodging. Its preface states that the dates and values are projections, are not guaranteed, and are subject to change, and that the projects are not directly administered by the City.
The island's daytime assets today
The island operator publishes 300 acres of parks and open space at full buildout, 22 miles of trails and 14 miles of bike paths. The 2.2-mile Bay Bridge Trail is open daily from 6 a.m. to 9 p.m., with a free shuttle van for the return climb.
Eight parks are open, including Cityside Park. Nearly a thousand residents have moved in across the two islands, Hawkins is fully leased and Isle House is 95 percent leased.
What to watch
A revision that gives the four Treasure Island Community Development parcels a contractor and a value settles the near-term supply question. A row for lodging settles the question after it.