San Francisco · Bayview Hunters Point · Block/lot 4809/023 · San Francisco
Since October 2024 within ½ mile: 14 homes completed, 19 permitted, 13 proposed or in review; 2 commercial or mixed-use projects.
39 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.
675 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: San Francisco Department of Building Inspection, Building Permits · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 2026
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 RH-1 as single-family residential, 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.
Permit issued and active for 3.8 yr (first record Jan 13, 2023), with no completion or new permit record in 2.6 yr. · 1 unit · $257,909 declared valuation
In "Applied" for 3.2 yr (since Aug 7, 2023), with no new permit record in 3.2 yr. · 8 units · $4,200,000 declared valuation
Permit issued and active for 5.4 yr (first record Jun 14, 2021), with no completion or new permit record in 3.1 yr. · 1 unit · $264,000 declared valuation
Permit issued and active for 2.5 yr (first record May 3, 2024), with no completion or new permit record in 2.5 yr. · 1 unit
Permit issued and active for 3.8 yr (first record Dec 27, 2022), with no completion or new permit record in 2.2 yr. · $1,250,000 declared valuation
In "Entitled" for 2.2 yr (since Aug 29, 2024), with no new permit record in 2.2 yr. · 1 unit
Nearby remodel / interior alteration (1515 Underwood Av): Status changed from filed to issued
Record 202610028962 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (1515 Underwood Av): Issued date changed from (blank) to 2026-10-26
Record 202610028962 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (1806 Newhall St): First appeared in published agency feed
Record 202610269859 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202504114197 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202504114197 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby repair tied to a housing/code case (55 Neptune St): Status changed from suspend to reinstated
Record 201908057886 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby commercial tenant improvement (4901 03rd St): Status changed from suspend to reinstated
Record 202601073401 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby repair tied to a housing/code case (1390 Revere Av): Description text was updated
Record 202605131193 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202504114195 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202504114195 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202504114195 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
1455 Underwood Ave · 1 unit · $912,000 valuation
Records span Mar 3, 2020 to Oct 23, 2026 (2 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
1459 Underwood Ave · 1 unit · $912,000 valuation
Records span Mar 3, 2020 to Oct 23, 2026 (2 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
1276 Revere Ave · 1 unit · $60,000 valuation
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
1663 Palou Ave · 1 unit · $10,000 valuation
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
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 3.8 yr (first record Jan 13, 2023) with no new permit activity recorded in 2.6 yr.
Active in "Issued" for 6.8 yr (first record Dec 27, 2019) with no new permit activity recorded in 14 mo. High-impact scale (2 housing units, $1,169,362 declared valuation across 2 permits).
Active in "Applied" for 3.2 yr (first record Aug 7, 2023) with no new permit activity recorded in 3.2 yr. High-impact scale (8 housing units, $4,200,000 declared valuation across 3 permits).
Active in "Issued" for 3.8 yr (first record Dec 27, 2022) with no new permit activity recorded in 2.2 yr. High-impact scale ($1,250,000 declared valuation across 2 permits).
High-impact scale (1 housing unit, $912,000 declared valuation across 2 permits). address_raw changed to "1453 UNDERWOOD AV" in snapshot Oct 24, 2026.
High-impact scale (1 housing unit, $912,000 declared valuation across 2 permits). issued_date changed to "2026-10-23" in snapshot Oct 24, 2026.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 8,908 parcels
−0.4% YoY
City baseline: 90.9 / 1k
495 in trailing 24m
Includes 34 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 ($10,500/yr) + local voter-approved bond debt ($1,890/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$45,096/yr
Cash needed: $231,000
NOI: $18,617/yr
P&I: $5,309/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 | −$4,172/mo | -21.7% | $9,135/mo | −$4,128/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$3,758/mo | -19.5% | $8,455/mo | −$3,510/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 | −$3,521/mo | -18.3% | $8,259/mo | −$3,082/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 ↗
Issued1 unitsJan 13, 2023 – Apr 3, 2024
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
1st fl revision to pa # 202301130184: reduced size of bathroom and kitchen/dining.
1st fl. reconfig.(e) living and garage, add a full bath, a kitchen, bedroom, office, and (1) sliding glass door at the rear of building not visable from a street or other public right-of-way), convert 1st floor into an adu per state program & legalization of all unpermitted work as shown on plans.
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.
| Report year | Project / record | Type | Entitled | Permitted | Completed | Deed-restricted |
|---|---|---|---|---|---|---|
| 2024 | —(202301130184) | ADU · Renter | — | 1 (Apr 3, 2024) | — | — |
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
1447A THOMAS AVE; 1447 THOMAS AVE
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 4809/023. Assessed value is not market value.
Search by block/lot 4809/023 (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.