San Francisco · Sunset/Parkside · Block/lot 2509/009 · San Francisco
Since October 2024 within ½ mile: 3 homes completed, 7 permitted.
10 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.
453 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
$1,961,000
Benchmark range: $1,667,000 – $2,255,000
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 4.6 yr (first record Mar 9, 2022), with no completion or new permit record in 13 mo. · 1 unit · $1 declared valuation
Permit issued and active for 8.3 yr (first record Jul 20, 2018), with no completion or new permit record in 8.3 yr. · 1 unit
Permit issued and active for 9.7 yr (first record Feb 13, 2017), with no completion or new permit record in 8.3 yr. · 7 units · $800,000 declared valuation
Permit issued and active for 9.9 yr (first record Nov 21, 2016), with no completion or new permit record in 7.8 yr. · 1 unit · $20,000 declared valuation
In "Applied" for 7.7 yr (since Mar 4, 2019), with no new permit record in 7.7 yr. · 1 unit · $40,000 declared valuation
Permit issued and active for 10.3 yr (first record Jul 14, 2016), with no completion or new permit record in 7.2 yr. · 1 unit · $75,000 declared valuation
Nearby roof replacement (2559 44th Av): Status changed from suspend to cancelled
Record 201606281020 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2225 Vicente St): Status changed from filed to issued
Record 202610219741 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2225 Vicente St): Issued date changed from (blank) to 2026-10-27
Record 202610219741 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby windows / doors / siding (2842 36th Av): Status changed from issued to complete
Record 202511048839 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2225 Vicente St): Declared valuation changed from 0 to 98700
Record 202610219741 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby windows / doors / siding (2654 40th Av): First appeared in published agency feed
Record 202610269923 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (388 Country Club Dr): Status changed from filed to issued
Record 202610219714 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (388 Country Club Dr): Issued date changed from (blank) to 2026-10-22
Record 202610219714 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2483 37th Av): Status changed from filed to issued
Record 202606304184 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (2483 37th Av): Issued date changed from (blank) to 2026-10-22
Record 202606304184 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
2578 Great Hy · 1 unit · $740,841 valuation
Records span Dec 11, 2025 to Feb 18, 2026 (2 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
2495 45th Ave · 1 unit · $13,000 valuation
Records span Dec 1, 2023 to Dec 29, 2025 (3 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
450a Crestlake Dr · 1 unit · $135,000 valuation
Records span Apr 18, 2023 to Nov 24, 2025 (3 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
245 Gellert Dr · 1 unit · $41,613 valuation
Records span May 25, 2023 to Nov 17, 2025 (4 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
2434a 43rd Ave · 1 unit · $170,607 valuation
Records span Oct 16, 2024 to Nov 13, 2025 (1 permit).
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 4.6 yr (first record Mar 9, 2022) with no new permit activity recorded in 13 mo.
Active in "Approved" for 6 yr (first record Oct 31, 2020) with no new permit activity recorded in 4.3 yr. High-impact scale (3 housing units, $1,653,117 declared valuation across 3 permits).
Active in "Issued" for 9.7 yr (first record Feb 13, 2017) with no new permit activity recorded in 8.3 yr. High-impact scale (7 housing units, $800,000 declared valuation across 2 permits).
Active in "Issued" for 3.4 yr (first record May 25, 2023) with no new permit activity recorded in 16 mo. High-impact scale (1 housing unit, $987,864 declared valuation across 3 permits).
Active in "Issued" for 10.3 yr (first record Jul 14, 2016) with no new permit activity recorded in 7.2 yr.
Active in "Issued" for 7.3 yr (first record Jun 26, 2019) with no new permit activity recorded in 4.4 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 22,315 parcels
+12.3% YoY
City baseline: 91.1 / 1k
860 in trailing 24m
Includes 50 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 ($19,600/yr) + local voter-approved bond debt ($3,528/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$111,051/yr
Cash needed: $431,200
NOI: $7,879/yr
P&I: $9,911/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 | −$9,668/mo | -26.9% | $16,807/mo | −$9,698/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$9,254/mo | -25.8% | $15,556/mo | −$9,081/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 | −$9,017/mo | -25.1% | $15,195/mo | −$8,652/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 unitsMar 9, 2022 – Oct 3, 2025
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
addressing permit only. add the address 2759 a 40th ave for the adu in a one-unit residential building per pa #202203099589. existing address is 2759 40th ave. link to parcel 2509/009.
home addition to (e) residence and addition of a legal adu in (e) garage space. home is to extend out 10 ft into rear yard. project includes demo of (e) walls, windows, doors & partitions. new rooms, adu, living space, kitchen space and balcony to be added.
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 |
|---|---|---|---|---|---|---|
| 2024 | —(202203099589) | ADU · Renter | — | 1 (Dec 31, 2024) | — | — |
| 2024 | 2759 40th Avenue(2023-004303PRJ) | ADU · Renter | 1 (May 30, 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 29, 2026
2759 40TH AVE; 2759A 40TH 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 2509/009. Assessed value is not market value.
Search by block/lot 2509/009 (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.