San Francisco · West of Twin Peaks · Block/lot 2331/003A · San Francisco
Since October 2024 within ½ mile: 8 homes completed, 5 permitted, 5 proposed or in review.
16 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.
791 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 29, 2026
$2,025,000
Benchmark range: $1,721,000 – $2,329,000
Public-records benchmark estimate combining Zillow Home Value Index (Data provided by Zillow), Census ACS 5-year estimates, parcel land-use/lot characteristics, and issued building permits. Not an official appraisal.
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 29, 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 6.9 yr (first record Dec 12, 2019), with no completion or new permit record in 3.1 yr. · 1 unit · $300,000 declared valuation
In "Applied" for 8.2 yr (since Aug 8, 2018), with no new permit record in 6.7 yr. · 3 units · $1,800,000 declared valuation
In "Applied" for 6.1 yr (since Sep 21, 2020), with no new permit record in 6.1 yr. · 1 unit · $150,000 declared valuation
In "Applied" for 6.1 yr (since Oct 8, 2020), with no new permit record in 6.1 yr. · 1 unit · $90,000 declared valuation
In "Applied" for 6 yr (since Oct 28, 2020), with no new permit record in 6 yr. · 2 units · $100,000 declared valuation
Permit issued and active for 8.4 yr (first record May 18, 2018), with no completion or new permit record in 5.9 yr. · 1 unit · $17,000 declared valuation
Nearby roof replacement (2143 26th Av): Status changed from issued to complete
Record 202310168710 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2600 16th Av): First appeared in published agency feed
Record 202608277313 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby windows / doors / siding (415 Castenada Av): First appeared in published agency feed
Record 202610279963 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2315 17th Av): First appeared in published agency feed
Record 202610280029 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2587 22nd Av): Description text was updated
Record 202610139330 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (870a Taraval St): First appeared in published agency feed
Record 202610269891 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2050 16th Av): First appeared in published agency feed
Record 202610269892 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2400 19th Av): Status changed from filed to issued
Record 202608216987 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2400 19th Av): Issued date changed from (blank) to 2026-10-22
Record 202608216987 · 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 (425 Taraval St): Status changed from filed to issued
Record 202512303030 · 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 (425 Taraval St): Issued date changed from (blank) to 2026-10-23
Record 202512303030 · 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 (425 Taraval St): Declared valuation changed from 0 to 10000
Record 202512303030 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2207 12th Av): Status changed from filed to issued
Record 202610199607 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (2207 12th Av): Issued date changed from (blank) to 2026-10-22
Record 202610199607 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (28 Forest Side Av): First appeared in published agency feed
Record 202610229761 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff 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 6.9 yr (first record Dec 12, 2019) with no new permit activity recorded in 3.1 yr.
Active in "Issued" for 5.8 yr (first record Jan 21, 2021) with no new permit activity recorded in 17 mo. High-impact scale (1 housing unit, $864,000 declared valuation across 3 permits).
Active in "Applied" for 8.2 yr (first record Aug 8, 2018) with no new permit activity recorded in 6.7 yr. High-impact scale (3 housing units, $1,800,000 declared valuation across 2 permits).
Active in "Issued" for 7.2 yr (first record Aug 6, 2019) with no new permit activity recorded in 2.4 yr. High-impact scale (1 housing unit, $1,000,000 declared valuation across 1 permit).
Active in "Applied" for 2.1 yr (first record Sep 12, 2024) with no new permit activity recorded in 21 mo.
Active in "Approved" for 4.8 yr (first record Jan 7, 2022) with no new permit activity recorded in 4.8 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 13,217 parcels
+15.6% YoY
City baseline: 91.1 / 1k
843 in trailing 24m
Includes 28 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 ($20,250/yr) + local voter-approved bond debt ($3,645/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$115,762/yr
Cash needed: $445,500
NOI: $7,112/yr
P&I: $10,240/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 | −$10,061/mo | -27.1% | $17,355/mo | −$10,096/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$9,647/mo | -26.0% | $16,064/mo | −$9,478/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 | −$9,409/mo | -25.3% | $15,691/mo | −$9,050/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 unitsDec 12, 2019 – Sep 29, 2023
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
installation of a new sprinkler monitoring system. ref#: 202412025890.
install new fire sprinkler syastem at entire ground floor per nfpa 13 r including 2" dedicated fire service per nfpa 24 total 18 sprinklers ref 201912129418
horizontal addition to ground & second floor, and vertical addition to add third floor, add adu to ground floor. kitchen & bathrooms remodel. replace (e) front elevation window in kind & the other ex windows with vinly windows.
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel (APN) · Retrieved Oct 29, 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 |
|---|---|---|---|---|---|---|
| 2023 | —(201912129418) | ADU · Renter | — | 1 (Sep 29, 2023) | — | — |
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 29, 2026
2275 18TH AVE
Source: San Francisco Planning / DataSF, Parcels – Active and Retired · Geography: parcel · Retrieved Oct 29, 2026
Zoning, permits, planning cases, and assessor data for this lot (SF Planning)
Look up block/lot 2331/003A. Assessed value is not market value.
Search by block/lot 2331/003A (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.