San Francisco · Treasure Island · Block/lot 8925/001 · San Francisco
Since October 2024 within ½ mile: 295 homes completed, 250 permitted (123 of them deed-restricted affordable); 1 demolition; 1 commercial or mixed-use project.
6 projects with a record in this window, grouped by us from permits and State housing reports. Units are as proposed on each project's latest record and counted at its current stage.
48 permits within ½ mile since October 2024
The map shows new construction, ADUs, demolitions, additions, and renovations. Routine systems work (roofs, HVAC, water heaters) is counted but not mapped. Unit counts are as stated on permits.
Source: · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 2026
No ADU or new-home permits recorded within ¼ mile in this window.
Permit counts, by the date issued (or applied, if not yet issued). Lot splits are planning cases, which we don't have.
We read public zoning and hazard maps against state law (ADUs: Gov. Code 66314; SB 9: Gov. Code 65852.21 and 66411.7). Local rules, title, tenancy history and site conditions can change the answer. Check with San Francisco's planning department before relying on it.
Sources: San Francisco Planning, Zoning Map – Zoning Districts (retrieved Oct 28, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the State Responsibility Area (effective 2024-04-01) (retrieved Oct 26, 2026) · CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones in the Local Responsibility Area (map dated 2025-03-24) (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — flood hazard zones (retrieved Oct 26, 2026) · FEMA, National Flood Hazard Layer — FIRM panels (retrieved Oct 26, 2026) · California Geological Survey, Alquist-Priolo Earthquake Fault Zones (retrieved Oct 26, 2026) · Zoning classes: our classification of TI-OS as open space, checked against the zone description on Oct 24, 2026
Chronological history of building permit applications and issuances, snapshot-dated status changes, State housing entitlements, surrounding development within ½ mile, and area home-value trends.
In "Applied" for 6.9 yr (since Dec 13, 2019), with no new permit record in 6.9 yr. · 85 units · $75,800,000 declared valuation
Permit issued and active for 5.1 yr (first record Oct 4, 2021), with no completion or new permit record in 4.3 yr. · $208,000 declared valuation
Permit issued and active for 5.1 yr (first record Oct 4, 2021), with no completion or new permit record in 3.5 yr. · $600,000 declared valuation
In "Approved" for 2.8 yr (since Jan 4, 2024), with no new permit record in 2.8 yr. · $384,560 declared valuation
In "Entitled" for 2.4 yr (since May 16, 2024), with no new permit record in 2.4 yr. · 1 unit
Permit issued and active for 2 yr (first record Oct 16, 2024), with no completion or new permit record in 10 mo. · 100 units · $40,000,000 declared valuation
Remodel / interior alteration (202610239811): First appeared in published agency feed
Detected between upstream data snapshots
errcs benchmark test
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff window
Remodel / interior alteration permit application filed (202610239811)
Current status: filed
errcs benchmark test · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plan revision / deferred submittal permit issued (202605060741)
Recorded status: issued
revision to pa # 202509034495 for added exterior pool, shifted pathway, added bldg pad at nw corner, mech, & plaumbing, lighting & electrical revisions, reference delta 12 for revisions. reference folowing permit revisions for tracking: #202602045167 & 202603107301. · Declared valuation: $419,756
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
General repair permit issued (202607014438)
Recorded status: issued
deferred mep seismic bracing. ref permit 202509034495. · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
401 California Ave · 150 units · $79,391,871 valuation
Records span Jul 15, 2025 to Jul 1, 2026 (1 permit).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
General repair permit application filed (202607014438)
Current status: issued
deferred mep seismic bracing. ref permit 202509034495. · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Remodel / interior alteration permit issued (202603268313)
Recorded status: issued
deferred glulam beam connections permit and superstructure revision. reference pa# 2025.0903.4495 · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plan revision / deferred submittal permit application filed (202605060741)
Current status: issued
revision to pa # 202509034495 for added exterior pool, shifted pathway, added bldg pad at nw corner, mech, & plaumbing, lighting & electrical revisions, reference delta 12 for revisions. reference folowing permit revisions for tracking: #202602045167 & 202603107301. · Declared valuation: $419,756
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
1 Ave Of The Palms · 117 units · 114 affordable · $55,000,000 valuation
Records span Oct 22, 2018 to May 6, 2026 (44 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Plan revision / deferred submittal permit issued (202603107301)
Recorded status: issued
revision 202509034495 for in ground spas. reference 202602045167 for foundation and pump room revisions. electrical deferred for separate submittal. no change in use or size. no exterior changes. revised occ. load of exterior courtyard. · Declared valuation: $10,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Remodel / interior alteration permit application filed (202603268313)
Current status: issued
deferred glulam beam connections permit and superstructure revision. reference pa# 2025.0903.4495 · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plan revision / deferred submittal permit application filed (202603107301)
Current status: issued
revision 202509034495 for in ground spas. reference 202602045167 for foundation and pump room revisions. electrical deferred for separate submittal. no change in use or size. no exterior changes. revised occ. load of exterior courtyard. · Declared valuation: $10,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plan revision / deferred submittal permit issued (202602055339)
Recorded status: complete
revision to ground improvement. ref pa #202510167538 · Declared valuation: $1
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Remodel / interior alteration permit issued (202601294786)
Recorded status: issued
fire service underground for future professional soccer training facility. ref bpa: 202509034495 · Declared valuation: $18,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plan revision / deferred submittal permit issued (202602045167)
Recorded status: issued
revision to foundation for future spa ref pa # 2025-0903-4495. architectural & mep elements of spa will be submitted separately. add change of groundskeeping covered area to pump room. · Declared valuation: $10,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Cross-referenced intelligence from our historical development graph—connecting parcels, permits, entity-resolved builders, empirical review-time distributions, and neighborhood renovation trends.
Explore full San Francisco development graph →Active in "Issued" for 18 mo (first record Apr 24, 2025) with no new permit activity recorded in 10 mo. High-impact scale ($31,100,000 declared valuation across 8 permits).
Active in "Applied" for 6.9 yr (first record Dec 13, 2019) with no new permit activity recorded in 6.9 yr. High-impact scale (85 housing units, $75,800,000 declared valuation across 3 permits).
Active in "Issued" for 2 yr (first record Oct 16, 2024) with no new permit activity recorded in 10 mo. High-impact scale (100 housing units, $40,000,000 declared valuation across 2 permits).
Active in "Issued" for 5.1 yr (first record Oct 4, 2021) with no new permit activity recorded in 3.5 yr.
Active in "Issued" for 5.1 yr (first record Oct 4, 2021) with no new permit activity recorded in 4.3 yr.
Active in "Entitled" for 2.4 yr (first record May 16, 2024) with no new permit activity recorded in 2.4 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 190 parcels
Small prior baseline
City baseline: 90.9 / 1k
15 in trailing 24m
Includes 0 ADUs
HUD Metro Fair Market Rent · San Francisco, CA HUD Metro FMR Area
HUD FY 2026 · 40th-percentile gross rentCensus ACS 5-year median gross rent (all bedroom counts combined):
Area home-value benchmarks (not an appraisal)
ZIP & neighborhood mediansUnder California Proposition 13, the seller's historical assessed value does not carry over to a buyer. On sale, the parcel is reassessed at the purchase price: 1.00% base rate ($5,500/yr) + local voter-approved bond debt ($990/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$8,856/yr
Cash needed: $121,000
NOI: $24,517/yr
P&I: $2,781/mo
For $0/mo net cash flow
At $3,600/mo rent
| Scenario | Assumptions | Year 1 Rent | Year 1 Cash Flow | Cash-on-Cash | Break-Even Rent | Year 5 Cash Flow |
|---|---|---|---|---|---|---|
| Conservative | −8% starting rent, +3% vacancy, +3% combined maintenance/CapEx, 1.5%/yr rent growth | $3,312/mo | −$1,152/mo | -11.4% | $4,920/mo | −$1,068/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$738/mo | -7.3% | $4,554/mo | −$450/mo |
| Optimistic (cap-limited) | +6% starting rent, 3% vacancy, 4.2%/yr rent growth (capped by local ordinance ceiling of 4.2%/yr) | $3,816/mo | −$501/mo | -5.0% | $4,448/mo | −$21/mo |
Rental regulatory context (informational only — not legal advice):
California AB 1482 (Tenant Protection Act, Civ. Code § 1947.12) caps annual rent increases at 5% + local CPI (max 10%) on covered properties. In San Francisco: San Francisco Rent Ordinance (Admin. Code Ch. 37) — annual allowable increase is 60% of Bay Area CPI (capped at 7%) for covered pre-June 1979 buildings. Official program rules ↗
IssuedApr 24, 2025 – Jan 6, 2026
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
errcs benchmark test
revision to pa # 202509034495 for added exterior pool, shifted pathway, added bldg pad at nw corner, mech, & plaumbing, lighting & electrical revisions, reference delta 12 for revisions. reference folowing permit revisions for tracking: #202602045167 & 202603107301.
deferred mep seismic bracing. ref permit 202509034495.
deferred glulam beam connections permit and superstructure revision. reference pa# 2025.0903.4495
revision 202509034495 for in ground spas. reference 202602045167 for foundation and pump room revisions. electrical deferred for separate submittal. no change in use or size. no exterior changes. revised occ. load of exterior courtyard.
revision to ground improvement. ref pa #202510167538
revision to foundation for future spa ref pa # 2025-0903-4495. architectural & mep elements of spa will be submitted separately. add change of groundskeeping covered area to pump room.
fire service underground for future professional soccer training facility. ref bpa: 202509034495
**premium plan review**new construction of type ii-b (sprinklered), 1-story steel and mass timber structure to include training facility (locker room, weight training, athletic training, hydotherapy & offices). 2 parking areas and 3 full size pitches and outdoor multi-function training area.
soil improvement. design build const of vibro displacement column (vdc) & 1 vibro compaction ground improvement. ground improvement only & exclude design & construction of foundation shoring. temporary construction pad grading & final pad grading. ref to grading pa# 202510066801
treasure island. rough grading to excavate approx 20,000 cubic yard of soil & transport material to dumpsite @ 4th st/avenue h locate 1/4 mile se. depth of excavation varies from 0.1 to 5.7'. additionally 5,000 cubic yard of soil (depths rang from 0.1 to 5.6') will be placed as compact fill.
demolition of building 258 - type v-b, 2 story commercial structure.
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel (APN) · Retrieved Oct 28, 2026 · Filed, issued, and status dates come from the Department of Building Inspection, which dates each status change.
No housing activity reported to the State for this parcel (2018–2025 reports).
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: project (parcel) · Retrieved Oct 26, 2026 · From San Francisco's Housing Element Annual Progress Reports. A project can appear in several report years as it moves from entitlement to permit to completion.
Source: San Francisco Planning, Zoning Map – Zoning Districts · Geography: zoning district polygon at parcel point · Retrieved Oct 28, 2026
449 AVENUE H UNIT BLDG 258
Source: San Francisco Planning / DataSF, Parcels – Active and Retired · Geography: parcel · Retrieved Oct 28, 2026
Zoning, permits, planning cases, and assessor data for this lot (SF Planning)
Look up block/lot 8925/001. Assessed value is not market value.
Search by block/lot 8925/001 (SF Treasurer & Tax Collector)
Search building permits, complaints, and inspections by address or block/lot
The official flood hazard map for this location. Our reading of it is under What could be built here.
This site does not show owner names.