The claim this column tests
A downtown housing project advances when the gap between delivery cost and income widens in the sponsor's favour. A published cost cut is the lever that widens it. The One Oak record at 1500 Market Street allows a test against one tower and three neighbours.
What One Oak cut
The sponsor pays an in-lieu fee, and the 2024, June 2025 and March 2026 filings state that 2023-passed city legislation reduced the rate from over twenty percent to 16.4 percent. The approved count rose 81 apartments above the 460-unit iteration on the same 0.42-acre parcel. Both changes lower the cost of each home against a fixed land bill.
The tower kept its 41 stories and its 400-foot roof. The commission approved 135 parking spaces, one freight loading space and two service loading spaces, with 210 Class 1 and 27 Class 2 bicycle spaces. Construction estimates above a quarter of a billion dollars exclude some development costs.
Eighty-one apartments against a fixed land bill
One Oak went from 319 apartments in the Snøhetta design for Build Inc, to 465 in the 2021 application, to 460 across 40 floors, to 516 in June 2024, and to 541 in June 2025. Each step divides the same acquisition and entitlement cost across more homes.
The ownership changed before the count rose. Build Inc filed for 465 in 2021 and returned the property to lender Washington Capital Management in 2023. Emerald Fund took the application for the owner and filed the higher counts.
A foundation, an approval letter and a filing
Hayes Point at 30 Van Ness Avenue started construction in September 2022 and halted in August 2023, with record office vacancy named as the cause. Permits for supplemental level 3 bracing of the excavation support went out in mid-June 2025 at about $4 million. Lendlease confirmed the tower stays on hold in July 2025 and stated that economic challenges remain.
10 South Van Ness Avenue received a revised final approval on 11 September 2026 for 921 homes, down from 1,019, with 70 affordable apartments and a 32.5 percent density bonus under Senate Bill 423. The entitlements run to August 2029. The approval carried no cost estimate and no construction timeline, and the developer had stated work could start as early as the following year.
98 Franklin Street raised its count from 345 to 385 units in 2022, paid $1 million toward Parcel K in Hayes Valley and agreed to buy 600 Van Ness Avenue for the city's housing office. Its status was on hold in June 2025.
Where the cost estimates land
One Oak carries a construction estimate above $250 million for 541 homes, which works out to roughly $462,000 for each home. Hayes Point carries a previous estimate of about a quarter of a billion dollars for a scheme of 333 homes and 252,900 square feet of office, so that estimate covers the office floors as well.
The third number in the file is a permit valuation. Permit 201612094535 was filed in December 2016 for a 300-unit, 40-story scheme at $156,880,000 and reads filed status. A permit valuation is a filing instrument.
The counter-example on Franklin Street
98 Franklin resolved its affordable obligation through the 2022 agreement and holds a 385-unit entitlement. A cost reduction with no financing behind it leaves a site waiting for a capital close. That case marks the limit of the mechanism.
The permit line in the file
An approval leaves the permit register untouched. Across the five lots at 1500-1540 Market Street the city record holds one new-construction permit, the 2016 filing, in filed status. No permit has been issued for the 541-unit design, and the March 2026 approval changed nothing in that register.
What would prove this column wrong
A site that starts with no published cost change would break the claim. So would a site that records a fee cut and extra units and still waits past its own stated build period. The Franklin Street case narrows the claim rather than settling it.
The test for the next twelve months
Two records will settle the argument on this corridor. The first is an issued building permit for One Oak against the approved design. The second is a financing close at Hayes Point or 10 South Van Ness with a published per-home cost.
Until one arrives, the difference sits in the arithmetic the filings publish. One Oak cut its fee rate, added 81 homes and holds an approval dated March 2026. Its neighbours hold foundations, approvals and filings.