San Francisco · Treasure Island · Block/lot 1939/006 · San Francisco
Since October 2024 within ½ mile: 178 homes completed, 250 permitted (9 of them deed-restricted affordable); 1 commercial or mixed-use project.
4 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.
39 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.
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 6.9 yr (since Dec 13, 2019), with no new permit record in 6.9 yr. · 85 units · $75,800,000 declared valuation
Permit issued and active for 5.1 yr (first record Oct 4, 2021), with no completion or new permit record in 4.3 yr. · $208,000 declared valuation
Permit issued and active for 5.1 yr (first record Oct 4, 2021), with no completion or new permit record in 3.5 yr. · $600,000 declared valuation
In "Approved" for 2.8 yr (since Jan 4, 2024), with no new permit record in 2.8 yr. · $384,560 declared valuation
In "Entitled" for 2.4 yr (since May 16, 2024), with no new permit record in 2.4 yr. · 1 unit
Permit issued and active for 2 yr (first record Oct 16, 2024), with no completion or new permit record in 10 mo. · 100 units · $40,000,000 declared valuation
Nearby remodel / interior alteration (449 Avenue H): First appeared in published agency feed
Record 202610239811 · Detected between snapshots
Source: San Francisco Department of Building Inspection, Building Permits · Snapshot diff within ½ mile
401 California Ave · 150 units · $79,391,871 valuation
Records span Jul 15, 2025 to Jul 1, 2026 (1 permit).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Electrical / panel permit issued (202512081251)
Recorded status: complete
install 6 new antennas on pole. install 6 radios, install 2 cabinets, remove existing panel antennas, remove 1 cabinet existing. · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
449 Ave H · $31,100,000 valuation
Records span Apr 24, 2025 to Jan 6, 2026 (8 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
150 04th Ti St · 100 units · $40,000,000 valuation
Records span Oct 16, 2024 to Jan 5, 2026 (2 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Electrical / panel permit application filed (202512081251)
Current status: complete
install 6 new antennas on pole. install 6 radios, install 2 cabinets, remove existing panel antennas, remove 1 cabinet existing. · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Remodel / interior alteration permit issued (202502200733)
Recorded status: issued
interior non structural demo per ab-017 bldg 258 · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Remodel / interior alteration permit application filed (202502200733)
Current status: issued
interior non structural demo per ab-017 bldg 258 · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
55 Bruton St · 178 units · 9 affordable · $84,400,000 valuation
Records span Dec 16, 2019 to Jan 30, 2025 (11 permits).
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
Plumbing / water heater / sewer permit issued (202405232853)
Recorded status: complete
unit d: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. reparir exterior siding in kind. no layout change - only remodel. maintain fire rating · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plumbing / water heater / sewer permit issued (202405232856)
Recorded status: complete
unit c: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. repair exterior siding in kind. no layout change - only remodel. maintain fire rating · Declared valuation: $50,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plumbing / water heater / sewer permit application filed (202405232853)
Current status: complete
unit d: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. reparir exterior siding in kind. no layout change - only remodel. maintain fire rating · Declared valuation: $25,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Plumbing / water heater / sewer permit application filed (202405232856)
Current status: complete
unit c: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. repair exterior siding in kind. no layout change - only remodel. maintain fire rating · Declared valuation: $50,000
Source: San Francisco Department of Building Inspection, Building Permits · Geography: parcel
Source: San Francisco Department of Building Inspection, Building Permits & HCD APR (grouped project within ½ mile)
600 Portway Pg · $384,560 valuation
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 · Geography: permits located by parcel, ½ mile radius · Retrieved Oct 28, 2026
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 6.9 yr (first record Dec 13, 2019) with no new permit activity recorded in 6.9 yr. High-impact scale (85 housing units, $75,800,000 declared valuation across 3 permits).
Active in "Issued" for 2 yr (first record Oct 16, 2024) with no new permit activity recorded in 10 mo. High-impact scale (100 housing units, $40,000,000 declared valuation across 2 permits).
Active in "Issued" for 18 mo (first record Apr 24, 2025) with no new permit activity recorded in 10 mo. High-impact scale ($31,100,000 declared valuation across 8 permits).
Active in "Issued" for 5.1 yr (first record Oct 4, 2021) with no new permit activity recorded in 3.5 yr.
Active in "Issued" for 5.1 yr (first record Oct 4, 2021) with no new permit activity recorded in 4.3 yr.
Active in "Entitled" for 2.4 yr (first record May 16, 2024) with no new permit activity recorded in 2.4 yr.
Substantial improvements (additions, interior remodels, ADUs, commercial TI, and new builds) across 190 parcels
Small prior baseline
City baseline: 90.9 / 1k
15 in trailing 24m
Includes 0 ADUs
Finaled / completedApr 26, 2022 – Apr 27, 2023
Finaled / completedFeb 14, 2019 – Mar 13, 2019
We group related permits and State housing reports into projects. That grouping is our inference, not an official record.
install 6 new antennas on pole. install 6 radios, install 2 cabinets, remove existing panel antennas, remove 1 cabinet existing.
interior non structural demo per ab-017 bldg 258
unit c: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. repair exterior siding in kind. no layout change - only remodel. maintain fire rating
unit d: install insulation + sheetrock after fire damage to unit., install plumbing appliances in the same spots as before fire. reparir exterior siding in kind. no layout change - only remodel. maintain fire rating
asbestos removal from interior walls, floors, and ceiling
treasure island. building# 99. to demolish 1 story commercial building.
address: 351 avenue h, sf ca : replacement of 2 ductless heat pumps (1 indoor & 2 outdoor), install of 3 new heat pumps (1 outdoor & 2 indoor), replacement of 4 ductless heat pumps (3 indoor & 1 outdoor), install of 5 new heatpumps (1 outdoor & 4 indoors).
treasure island, building 62, 849 13th street: upgrading the (e) fire alarm system. replacing the (e) pressure valve switches with new waterflow switches and replacing the (e) waterflow bell with new exterior horn strobe
upgrade current equiptment wash area to food prep area, permit outdoor tasting room with food service
replace (3) antennas replace (3) rru radio units, replace (1) surge protector, replace (1) hybrid cable. at base: replace (1) surge proector
verizon: modify an existing wireless comm. facility. replace 3 antennas, 4 surge protectors, 8 rrus. relocate 1 rru, remove 7 rrus. replace 4 hybrid cables. at base station, replace 4 surge protectors.
bldg #62: demo of illegally built interior wall.
kitchen (~30'x20') : remove old/stained and damaged frp board (~15'x7') on walls and replace with same kind. repair broken floor tile. install new kitchen prep and hand washing sink. install new dink drain basket. update to proper size gas pipe. install gas earthquake valve. all work in kind.
remove walkin fridges and elevated floor areas, renovate kitchen with new equipment, nw walkin, new mep. add one wall and door. relocate restroom sink and reverse door swing for ada compliance.
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.
No housing activity reported to the State for this parcel (2018–2025 reports).
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
101 09TH TI ST; 1100 HALYBURTON CT; 1101 BIGELOW CT
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 1939/006. Assessed value is not market value.
Search by block/lot 1939/006 (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.
street space
bldg a: change of occupancy classification from e to a-3 for 1 room wihin building b. room has already been approved by fire captain mary tse for max occupancy of 226. no work recalculated occupant load established at 267
change of occupancy classification from e to a-2 for 1 room wihin building b. room has already been approved by fire captain mary tse for max occupancy of 99. no work
demolish treasure island building 670. type v-b, 3-b, 1-a, 1-b. warehouse/office vacant building demolition for preparation of pad for new treasure island waste water treatment facility. 850 10th st, 880 ave m, 950 ave n, 1080 ave m.
demolish treasure island building 671. type v-b, 3-b, 1-a, 1-b. warehouse/office vacant building demolition for preparation of pad for new treasure island waste water treatment facility. 850 10th st, 880 ave m, 950 ave n, 1080 ave m.
demolish treasure island building 330. type v-b, 3-b, 1-a, 1-b. warehouse/office vacant building demolition for preparation of pad for new treasure island waste water treatment facility. 850 10th st, 880 ave m, 950 ave n, 1080 ave m.
demolish treasure island building 216. type v-b, 3-b, 1-a, 1-b. warehouse/office vacant building demolition for preparation of pad for new treasure island waste water treatment facility. 850 10th st, 880 ave m, 950 ave n, 1080 ave m.
demolish treasure island building 215. type v-b, 3-b, 1-a, 1-b. warehouse/office vacant building demolition for preparation of pad for new treasure island waste water treatment facility. 850 10th st, 880 ave m, 950 ave n, 1080 ave m.
revision to pa 2017-1020-1800 - add existing deck to occupant load
adminstrative permit to obtain assembly permit for fire department. no construction