More homes, healthy corridors:
what Berkeley's own records say works

These slides are from an independent, permit-level reconstruction of Berkeley's housing pipeline from primary sources — every building and zoning permit from 2015 to 2026, the County Assessor's roll, the city's filings to the state — plus Berkeley business licenses, County property ownership files, and more.

The scope: 82,065 permit records. ■ Building permits  ■ Zoning & planning cases — filed per year:

And the city those records describe — next slide: Berkeley in one breath.

Every number on these slides traces to a public record. The method is published and audited: our count vs the city's official state filing differs by 130 units out of ~4,200 — and every row of that difference, in both directions, is named. → berkeleybuild.com/housing-audit.html

PL Multi-City Open Data APR Test →

Berkeley in one breath

UC Berkeley: 46,151 students (fall 2025, its largest ever) + 13,422 faculty and staff — roughly a third of the city turns over with the academic calendar — and ≈5,200 new student beds are in UC's construction pipeline.

The daily tide — Berkeley nearly doubles its working population by day

And the water arrives the same way — daily, from one direction, across the Hayward active fault zone

Behind the tap: EBMUD's local distribution runs 250–400 miles of pressurized water mains under Berkeley's streets, with many tanks and pumping plants lifting water into the hills. Next iterations add the other daily flows: power and data.

Berkeley in one breath, part 2 — the hard city

The streets, by class

The corridors that carry 48% of the new housing are the 22 arterial miles — one-tenth of the street network. Under it all: the sewers are mostly 6-inch vitrified-clay pipe (mains run 6–18 inches), and the city has rehabilitated 227 of the 254 miles since 1986 — the pipes are older than every building on the deck.

The sealed surface

Berkeley is 6,156 acres. The city's own watershed plan counts 848 acres of streets + 182 acres of sidewalks — 17% of the city is public pavement before a single roof or parking lot is counted. Where the city has measured whole watersheds, imperviousness runs 34% (Gilman, near the hills) to 55% (Potter, the flats) — rain that once soaked in now runs to the Bay through the storm drains.

How Berkeley builds housing — what actually finished, and where

4,229 homes completed 2018–2025 · +216 so far in 2026 · +772 UC beds

Counted at the certificate of occupancy — keys in doors, not approvals — permit by permit: the same fine-grained count the Audit page checks against the city's state filing, every one of its 845 permits located by the feed's own street fields. 48% of the units came from the 11% of permits on the 14 commercial corridors (■ 94 corridor permits, 2,016 units); the other ■ 751 permits — ADUs and small infill, the neighborhood fabric — added 2,213. Top corridors: Shattuck 590 · San Pablo 513 · University 407 · Telegraph 150.

CO = certificate of occupancy: the city's final inspection sign-off that a building is safe and lawful to live in. We count a home only at this moment — not when it is approved, not when it is permitted — so every unit on this chart is a door someone can open.

The map — where the 4,005 located units stand

■ corridor completions   ■ neighborhood fabric — dot area ∝ units, on the County's own parcel fabric (every gray point is one of Berkeley's 29,131 parcels). The pattern the numbers promised: a few large gold dots on the arterials; a blue mist of ADUs across every neighborhood.

4,005 of 4,229 units located (95%); 224 units on 7 permits not yet mappable — their permit-era parcels were re-platted or merged after construction and the crosswalk holds them for review rather than guessing (the standing never-auto-re-point rule).

Two streams: the metronome and the towers

The same 4,229 completed homes, split by building size instead of street: ■ buildings over 4 units delivered 3,382 units on just 53 permits; ■ small projects (1–4 units, mostly ADUs) delivered 847 on 792. The small stream is a metronome — 67–135 units every single year, through COVID, rate spikes, everything — while the tower stream swings 4× with the financing cycle. Policy reads: the ministerial lane produces reliability; the big buildings produce volume.

Our total units completed match the city's official numbers almost exactly (ours | city's state filing) — 2022: 836 | 828 · 2023: 720 | 716 · 2024: 715 | 708. In 2025 — 600 | 492 — most of the gap is two completed group-living buildings the city's filing omits (80 units: a 41-unit project on San Pablo and the 39-unit 1367 University), plus a tail of small ADU completions. Every row of the difference is named.

The long road, 1 of 3 — the majors that finished

■ intake (application → deemed complete)  ■ consideration (deemed complete → entitlement)  ■ entitled — waiting for building permit  ■ construction  ● certificate of occupancy

† application date recovered from the city's own planning portal records (use-permit / design-review filings at the address; record numbers in the generator); building-permit dates for the CO-import rows recovered from the permit feed. ※ milestones still unrecorded. Muted bars = the stages between application and completion are unrecorded (permit predates the 2018 feed).

The long road, 2 of 3 — under construction now

■ intake (application → deemed complete)  ■ consideration (deemed complete → entitlement)  ■ entitled — waiting for building permit  ■ construction  ● certificate of occupancy

Gold bars run to today. The specimen to see: 1701 San Pablo — entitled in 2013, a decade in the gray waiting room before its 2023 building permit.

The long road, 3 of 3 — entitled, waiting for a permit

■ intake (application → deemed complete)  ■ consideration (deemed complete → entitlement)  ■ entitled — waiting for building permit  ■ construction  ● certificate of occupancy

The orange is the finding: for these majors the median consideration stage (deemed complete → entitlement) runs 410 days — the back-and-forth intake before it, 113. The clock the law tracks starts at deemed-complete; that's the stage to watch.

The pipeline in one picture — every major application since 2013

All 87 major (≥50-unit) housing applications in our record: 59 entitled, 33 reached a building permit, 25 completed (2,458 units delivered) — and not one denied. The pipe doesn't close; it narrows by waiting: 26 entitled projects (5,366 units) sit in the waiting room and 27 (3,793 units proposed) haven't reached entitlement yet. 1 (58 units) were withdrawn by their applicants — the only exits are voluntary. (Three more permitted projects carry a "withdrawn" status — flagged to the stalled register, kept as under-construction here because their issued permits are hard evidence.)

1 · When Berkeley removes discretion, Berkeley is fast

3 days

Median time from application to permit for an ADU — across 2,881 ADU permits since 2018. The ministerial lane demonstrably works. Solar is the biggest fast lane of all: 1,076 permits in the last 13 months.

And the homes are getting finished — 2,112 ADUs completed, 83% in the last three years

Completed ADUs by certificate-of-occupancy year (permit final). The curve follows the 2017–2020 state ministerial mandates with the expected construction lag; another 767 ADU permits are issued and in construction.

And the new Middle Housing certificate is behaving the same way

• 15 approved, 0 denied in its first 8 months; approvals landing inside ~2.5 monthsderived

2 · Middle Housing, year one: it works, it's fast — and it's small

It neither flooded neighborhoods nor failed: today it is a homeowner-flexibility tool more than a housing-production engine. SB 9, meanwhile, is essentially unused in Berkeley (zero applications).

3 · Where time dies: delay, not denial

189 days median · 527 days 90th pct.

…from application to permit issuance for new-housing projects (928 permits). End to end, the slowest tenth of completed housing takes 3.5+ years from application to finished building. One 63-unit building (2527 San Pablo) waited 4.9 years for its permit.

• Planning citywide: 743 approved vs 52 denied — the city rarely says no; it says wait.
• The waiting room is real: 539 applications currently pending/incomplete.

4 · Where the homes actually come from

48% of units · 11% of permits

2018–2025, 94 corridor permits produced 2,016 units; 751 neighborhood-fabric permits produced 2,213. The big buildings carry the totals (80% of all units came from 5+-unit buildings); the fabric stream (ADUs, Middle Housing) is many hands, small numbers — and touches zero storefronts.

5 · Housing did not hurt the corridors — vacancy is a separate problem

• The corridors with the most new housing (Shattuck, University, Telegraph) sit at the healthiest end of the business-license table (19–21% of commercial parcels without an active license, vs 34% on San Pablo and 6% on Solano — a 5× spread unrelated to where housing was built).
• The genuine weak spot: ground floors of new buildings. Preliminary: only 2 of the 14 largest corridor completions show an active non-rental business license at their street addresspreliminary — field check in progress
• Policy lever: tenanting support and vacancy activation, not housing restriction. The city already taxes empty homes (Measure M); empty storefronts aren't even measured.

6 · The money: a building pays once at the counter, then every year forever

One building — 1951 Shattuck — now carries $70.4M of improvements: ≈$704k/yr in base property tax. Fiscally, one corridor tower ≈ a thousand ADUs; ADUs add homes at near-zero fiscal and commercial footprint. And the $0 rows are honest: new completions awaiting reassessment, and nonprofit projects that are exempt — affordable housing pays in homes, not taxes. The portfolio beats either simplistic story.

7 · Oakland already shows the public what Berkeley makes them ask for

We tested both cities' permit systems this week — same software (Accela), same county, very different windows. This is what a homeowner or developer sees without filing a single records request:

Why it matters for housing: an applicant who can see the queue plans with confidence — openness is a subsidy that costs nothing. And Berkeley can leapfrog: Oakland hides its milestone dates too. Publish the permit feed with dates and clock states and Berkeley becomes the East Bay's transparency benchmark, not its laggard.

8 · Five asks that cost almost nothing and change everything

• Write open data into the Clariti contract. The city's new ~$5 million permit-system contract (Clariti, replacing Accela for permit pipeline data management) must require a public open-data API. With it, independent verification like ours — and every journalist's, student's, and neighbor's — updates in minutes instead of months of records requests and scraping. A data-access clause costs nothing at signing and is nearly impossible to add later.
• Publish the building-permit feed — with dates and clock states — on the open-data portal the city already runs: it publishes business licenses today, but not a single permit dataset, and that one move leapfrogs Oakland. (Our CPRA comparison found the internal report used for data requests captures 40–50% fewer filings than the public portal shows — undocumented filters.)
• Publish deemed-complete dates — one field, and every statutory-clock question (the ADU 60-day rule, AB 2234) becomes answerable instead of arguable. The data already leaves the building: we found the current Accela portal sends the FULL processing timeline — deemed-complete, CEQA, decision, appeal dates — to every visitor's browser, hidden in the page code (display:none). Showing it is a display setting, not a data project.
• Publish the fee ledger — replace modeled fee figures with actuals.
• Fix the three broken open datasets we hit this week: zoning (geometry, zero attributes), budget (expenses only, ends FY2016), and the permit-report filters above.

9 · This doesn't stop when the meeting ends

The record that produced these slides watches itself: the state filing is re-pulled and diffed on schedule (five mechanical error-detectors, anchor-validated), business licenses snapshot monthly, and the permit stream refreshes by harvest and CPRA. When the city's numbers move, we know the week it happens — and every claim keeps its receipt.

berkeleybuild.com · the Audit page · the Explorer · the open curriculum (anyone can rebuild this record — and now, any city's).