San Francisco · Twin Peaks · Block/lot 2847/084 · San Francisco
Since October 2024 within ½ mile: 5 homes completed, 14 permitted, 5 proposed or in review.
21 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.
857 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.
$1,514,000
Benchmark range: $1,287,000 – $1,741,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 30, 2026
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 30, 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 RM-1 as multifamily 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 5.8 yr (first record Jan 5, 2021), with no completion or new permit record in 5.8 yr. · 7 units · $250,000 declared valuation
In "Approved" for 5.8 yr (since Jan 21, 2021), with no new permit record in 5.7 yr. · 2 units · $295,592 declared valuation
In "Applied" for 5.7 yr (since Mar 2, 2021), with no new permit record in 5.7 yr. · 1 unit · $150,000 declared valuation
Permit issued and active for 7.8 yr (first record Jan 4, 2019), with no completion or new permit record in 5.7 yr. · 1 unit · $50,000 declared valuation
In "Applied" for 5.5 yr (since Apr 30, 2021), with no new permit record in 5.5 yr. · 4 units · $260,000 declared valuation
In "Entitled" for 5.1 yr (since Sep 9, 2021), with no new permit record in 5.1 yr. · 1 unit
Nearby remodel / interior alteration (433 Hoffman Av): Status changed from issued to complete
Record 202609148056 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (375 Woodside Av): Declared valuation changed from 0 to 28000
Record 202610280003 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (5238 Diamond Heights Bl): Declared valuation changed from 0 to 1
Record 202610280035 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby solar / battery storage (108 Hoffman Av): First appeared in published agency feed
Record S20261027778 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (375 Woodside Av): First appeared in published agency feed
Record 202610280003 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (767 27th St): First appeared in published agency feed
Record 202610280022 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plan revision / deferred submittal (5238 Diamond Heights Bl): First appeared in published agency feed
Record 202610280035 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202603177712 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (104 Turquoise Wy): First appeared in published agency feed
Record 202610269886 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Record 202212208811 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby plumbing / water heater / sewer (514 Clipper St): Status changed from issued to cancelled
Record 202604038889 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (3687 Market St): Status changed from issued to complete
Record 202610209671 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (4370 Cesar Chavez St): First appeared in published agency feed
Record 202610229796 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (122 Hoffman Av): First appeared in published agency feed
Record 202610239812 · 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 (3851 Market St): First appeared in published agency feed
Record 202610239827 · 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 5.8 yr (first record Jan 5, 2021) with no new permit activity recorded in 5.8 yr. High-impact scale (7 housing units, $250,000 declared valuation across 4 permits).
Active in "Applied" for 6.7 yr (first record Feb 26, 2020) with no new permit activity recorded in 5 yr. High-impact scale (13 housing units, $4,750,000 declared valuation across 1 permit).
Active in "Applied" for 5.5 yr (first record Apr 30, 2021) with no new permit activity recorded in 5.5 yr. High-impact scale (4 housing units, $260,000 declared valuation across 1 permit).
Active in "Issued" for 3.3 yr (first record Jul 24, 2023) with no new permit activity recorded in 13 mo. High-impact scale (1 housing unit, $1,306,085 declared valuation across 1 permit).
Active in "Applied" for 8.9 yr (first record Dec 8, 2017) with no new permit activity recorded in 4 yr. High-impact scale (2 housing units, $950,000 declared valuation across 4 permits).
Active in "Entitled" for 8.9 yr (first record Dec 7, 2017) with no new permit activity recorded in 14 mo. High-impact scale (2 housing units, $1,000,000 declared valuation across 3 permits).
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 1,754 parcels
+4.8% YoY
City baseline: 91.1 / 1k
129 in trailing 24m
Includes 1 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 ($15,150/yr) + local voter-approved bond debt ($2,727/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$78,798/yr
Cash needed: $333,300
NOI: $13,130/yr
P&I: $7,661/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 | −$6,980/mo | -25.1% | $13,055/mo | −$6,975/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$6,567/mo | -23.6% | $12,084/mo | −$6,357/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 | −$6,329/mo | -22.8% | $11,803/mo | −$5,928/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 ↗
Issued7 unitsJan 5, 2021 – Jan 5, 2021
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
to obtain final inspection for work approved under 9924472s. all work is complete
to obtain final inspection for work approved under 9924472s. all work is complete
to obtain final inspection for work approved under 9924472s. all work is complete
final?
revision to pa9924472 includes revision of rear portion of units 1 and 2 (1st fl)-move bathroom. structural drawings for exterior decks for units 3, 4, 5, 6. work receoomnced under 202101052101.
new installation of new automatic f/a system
revision to permit 202101052101 to remove to comply and abate nov202069291 from scope. that work to be handled under seperate permit
to comply and abate nov202069291: originally part of scope of permit# 202101052101
to obtain final inspection for work approved under pa# 200712170582: all work is cmplete. ref: 200712170582
recommencement of work under pa 9924472, 200911242083 & 200812017486. to comply the balance of the work for final inspection. to comply and abate nov202069291.
to obtain final inspection for work approved under pa# 2005-0714-7633, 2007-1217-0582, 2007-1218-0733. jall work is complete
to obtain final inspection for work approved under pa# 99244725, 2012-1227-4241, 2005-05203049. all work is complete
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel (APN) · Retrieved Oct 30, 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 |
|---|---|---|---|---|---|---|
| 2021 | —(202101052101) | 5+ · Renter | — | 7 (Jan 5, 2021) | — | — |
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 30, 2026
140 PORTOLA DR
Source: San Francisco Planning / DataSF, Parcels – Active and Retired · Geography: parcel · Retrieved Oct 30, 2026
Zoning, permits, planning cases, and assessor data for this lot (SF Planning)
Look up block/lot 2847/084. Assessed value is not market value.
Search by block/lot 2847/084 (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.