San Francisco · Portola · Block/lot 5916/004 · San Francisco
Since October 2024 within ½ mile: 14 homes completed, 3 permitted, 9 proposed or in review.
18 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.
601 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.
$1,218,000
Benchmark range: $1,035,000 – $1,401,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 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 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.
In "Applied" for 4.7 yr (since Mar 1, 2022), with no new permit record in 4.7 yr. · 2 units · $1,250,000 declared valuation
In "Entitled" for 12 mo (since Oct 16, 2025), with no new permit record in 12 mo. · 3 units
Permit issued and active for 8.3 yr (first record Jul 3, 2018), with no completion or new permit record in 3.8 yr. · 1 unit · $10,000 declared valuation
In "Applied" for 3.5 yr (since Apr 18, 2023), with no new permit record in 3.5 yr. · 2 units · $75,000 declared valuation
In "Applied" for 4.9 yr (since Nov 18, 2021), with no new permit record in 3.4 yr. · 62 units · $300,000 declared valuation
In "Applied" for 3.2 yr (since Aug 24, 2023), with no new permit record in 3.2 yr. · 1 unit · $191,661 declared valuation
Nearby plumbing / water heater / sewer (322 Princeton St): Status changed from issued to complete
Record 202606153239 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
Nearby remodel / interior alteration (655 Andover St): First appeared in published agency feed
Record 202610229782 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
1100 Silliman St · 1 unit · $5,000 valuation
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
581 Hamilton St · 1 unit · $115,000 valuation
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
425 Bacon St · 1 unit · $130,950 valuation
Records span Feb 10, 2020 to Apr 30, 2026 (1 permit).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
256 Sweeny St · 1 unit · $261,142 valuation
Records span Jun 6, 2025 to Nov 5, 2025 (2 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
246a Girard St · 1 unit · $300,000 valuation
Records span Nov 13, 2023 to Oct 23, 2025 (1 permit).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Planning entitlement approved for 3 housing units (814 - 816 SILLIMAN ST)
Reported in 2025 Housing Element Annual Progress Report
2 to 4 · Renter
Source: California HCD, Housing Element Annual Progress Report — Table A2 · Geography: parcel
4100 Folsom St · 1 unit · $358,491 valuation
Records span Nov 3, 2021 to Aug 13, 2025 (1 permit).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
40 Gaven St · 6 units · $46,601 valuation
Records span May 5, 2017 to Jun 20, 2025 (5 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
1 unit
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
810 Ogden Ave · 1 unit · $430,000 valuation
Records span Dec 12, 2019 to Apr 8, 2025 (5 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
39 Girard St · 1 unit · $150,000 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 "Applied" for 4.7 yr (first record Mar 1, 2022) with no new permit activity recorded in 4.7 yr. High-impact scale (2 housing units, $1,250,000 declared valuation across 1 permit).
Active in "Entitled" for 12 mo (first record Oct 16, 2025) with no new permit activity recorded in 12 mo.
Active in "Applied" for 4.9 yr (first record Nov 18, 2021) with no new permit activity recorded in 3.4 yr. High-impact scale (62 housing units, 11 deed-restricted affordable, $300,000 declared valuation across 52 permits).
Active in "Issued" for 2.6 yr (first record Apr 4, 2024) with no new permit activity recorded in 19 mo.
Active in "Applied" for 2.4 yr (first record Jun 18, 2024) with no new permit activity recorded in 2.4 yr.
Active in "Issued" for 3.2 yr (first record Aug 3, 2023) with no new permit activity recorded in 2.6 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 3,887 parcels
+45.5% YoY
City baseline: 90.9 / 1k
135 in trailing 24m
Includes 11 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 ($12,200/yr) + local voter-approved bond debt ($2,196/yr) + fixed direct levies/Mello-Roos ($450/yr).
Insurance & hazard context:
−$57,417/yr
Cash needed: $268,400
NOI: $16,611/yr
P&I: $6,169/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 | −$5,198/mo | -23.2% | $10,568/mo | −$5,169/mo |
| Base (your inputs) | Your entered assumptions, 3.0%/yr rent growth | $3,600/mo | −$4,785/mo | -21.4% | $9,782/mo | −$4,551/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 | −$4,547/mo | -20.3% | $9,555/mo | −$4,122/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 ↗
Entitled3 unitsOct 16, 2025 – Oct 16, 2025
Applied2 unitsMar 1, 2022 – Mar 1, 2022
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
vertical & horizontal addition to alter existing single family dwelling into 2 units.
to erect a 3-story, type 5b, two unit dwelling per sb-9. (e) single family bldg to remain.
comply with complaint 201984031 replace side & rear yard 6'-0" fence & retaining wall max 4;-0"
landscaping @ private property with dirt removal of about 20 cubic yards 16'x60'x6' (side of the building. no contaminated soil involved.
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 |
|---|---|---|---|---|---|---|
| 2025 | 814 - 816 SILLIMAN ST(2022-003078PRJ) | 2 to 4 · Renter | 3 (Oct 16, 2025) | — | — | — |
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
816 SILLIMAN ST
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 5916/004. Assessed value is not market value.
Search by block/lot 5916/004 (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.