Cupertino planning commission weighs upzoning along corridors to address lower-income shortfalls

Planning staff told the Cupertino Planning Commission on June 23 that the city must revisit its priority housing sites after a wave of recent approvals left the city with a shortfall in lower-income housing capacity.

At a study session framed as an informal kickoff to an extended update, an unnamed planning department staff member summarized the sixth-cycle housing element background, saying the city's assigned Regional Housing Needs Allocation was roughly 4,588 units and that the city adopted an additional buffer of about 28 percent. The staff presentation warned that the city's buffer was thin in the very-low, low and moderate income bands and that recent development approvals — largely for townhome-style projects — reduced the number of lower-income units the housing element assumed.

Why it matters: State law (Government Code section 65863) and subsequent changes such as SB 166 require cities to preserve the capacity they promised in their housing elements. If priority sites develop at lower densities or with fewer affordable units than anticipated, staff said, the city must identify additional capacity or upzone existing sites to avoid a "no net loss" finding.

What staff proposed and why: Planning staff outlined a strategy that focuses on adding capacity where redevelopment is most feasible — large commercial corridors and underused office or hotel parcels — rather than broadly upzoning many smaller neighborhood parcels. Staff offered tactics including raising minimum densities on corridor sites (for example from 50 units per acre toward 65 or higher), identifying corridors where AB 2011-style density could feasibly be implemented, and looking for large nonretail parcels (class C office, older hotels, some gas-station sites) that would be less likely to displace existing housing.

"When you identify potential shortfall, you have 180 days to address this issue under state law," the planning presenter said, underscoring the statutory timeline for a remedy. Staff also noted that many recent approvals were for for-sale townhomes with owner-occupancy BMR requirements (commonly 20 percent moderate-income), which produce fewer very-low and low-income rental units than higher-density rental or 100-percent-affordable projects.

Key technical points and constraints: The presentation covered technical accounting rules the city must follow. Staff said ADUs are counted in the housing element under set assumptions (previous ETD determinations allowed a mix credited as part of the inventory) and that density-bonus laws and state incentive programs can reduce the practical effect of local BMR thresholds. Staff also warned that developer interest and market realities drive what gets built: "we've received over 16 housing development applications" and most have produced townhome-scale products that do not deliver the lower-income unit mix assumed in the housing element.

Commission response and next steps: Commissioners asked detailed questions about owner outreach, the feasibility of upzoning particular parcels, whether the city can protect retail, and how to account for sites owned by other public agencies (for example college parking lots). Several commissioners encouraged staff to prioritize large corridor or office parcels and to return with a shorter, ranked list of potential upzoning sites and a targeted owner-outreach plan. Staff said it will bring back a refined proposal and recommended sites for further review and for consultation with their consultant and HCD guidance.

The commission concluded the study session with direction to staff to narrow focus, prioritize corridor and nonretail office/hotel candidates, and come back with a ranked set of sites and outreach strategy. No legislative zoning changes were adopted at the meeting; this session was an early step in a multi-meeting process that staff expects to continue into the fall.