San Francisco · Sansome St
343 Sansome St, San Francisco
30 home-service permits on record at 343 Sansome St, San Francisco; the roof was last permitted on Mar 17, 2016 at a declared value of $1,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jul 29, 2026 | otc alterations permit: #950: new t.i. on 9th floor:includes demolition of existing office space: non structural partitions, doors, glazing, ceiling, lighting, millwork and finishes. mechanical, electrical, & plumbing submittals to be deferred unit 0 | Plumbing | $994,000 | — | issued | 202512151745 |
| Jul 9, 2026 | otc alterations permit: 5th floor: electrical work for tenant improvement. ref arch. 202604230007 unit 0 | Electrical | $52,000 | — | issued | 202605282068 |
| Jul 17, 2025 | otc alterations permit: suite #550: demolition of non-structural partitions, reception desk, casework, light fixtures, and finishes. construction of non-structural partitions, doors, interior glazing system, casework, light fixtures and finishes. patch and repair existing ceilings as required. no plumbing fixtures unit 0 | Plumbing | $144,000 | — | Finaled Sep 9, 2025 | 202507160889 |
| Jul 7, 2025 | otc alterations permit: electrical and plumbing for 5th fl common area upgrades. ref 202503273230 unit 0 | Plumbing | $12,000 | — | Finaled Mar 18, 2026 | 202506259396 |
| Jun 4, 2025 | otc alterations permit: 5th fl: upgrades to restrooms. demo of toilet stall partitions, plumbing fixtures, ceiling, lighting and finishes. new construction to include new toilet stall partitions, plumbing fixtures, ceiling, lighting & finishes. new ceiling, lighting & finishes in elevator lobby & corridors unit 0 | Plumbing | $241,826 | — | Finaled Mar 18, 2026 | 202503273230 |
| Mar 5, 2025 | otc alterations permit: 16th floor: mechanical and electrical work for t.i. ref pa#202412126752 unit 0 | Electrical | $350,000 | — | Finaled Jul 30, 2025 | 202502200696 |
| Dec 18, 2024 | otc alterations permit: mechanical & electrical ref 202410173178 unit 0 | Electrical | $10,000 | — | Finaled Mar 11, 2025 | 202412187055 |
| Dec 27, 2022 | additions alterations or repairs: 1st floor: fire only work to upgrade the 6 extg fire alarm panels, as well as the replacement of 1 annunciator, 182 smoke detectors, 100 duct detectors, 2 pull station, 134 modules. a new cellular dialer is added with this work. no ref permit app # unit 0 | Heating and cooling | $280,000 | — | issued | 202208100263 |
| Nov 4, 2022 | additions alterations or repairs: basement: fire sprinkler replace diesel fire pump with new to match existing. revise suction to meet current code. electric work by others. ref pa# 202106092029 unit 0 | Electrical | $287,335 | — | issued | 202206146244 |
| May 29, 2020 | otc alterations permit: "fire only" additions of smoke detector, duct detectors and speakers/strobes for the wells fargo. remodel on floor 11. ref bldg app# 201910023276 unit 0 | Heating and cooling | $64,700 | — | Finaled Nov 2, 2020 | 202005067323 |
| Dec 5, 2019 | otc alterations permit: 11th floor: office remodel of conference rooms, huddle rooms, focus rooms, & break room, new furniture & finishes, upgrade all fixtures to new led lighting hvac upgrade for new remodel unit 0 | Heating and cooling | $1,400,000 | — | Finaled Sep 21, 2020 | 201910023276 |
| Oct 3, 2019 | otc alterations permit: fire alarm as built to indicate revisions william blair remodel floor 10, 2 relay modules added, corrections made on floor plan to show actual installation of new and e duct detectors ref 201905241605 unit 0 | Heating and cooling | $1,100 | — | issued | 201910033394 |
| Aug 9, 2019 | otc alterations permit: fire alarm work for the "william blair" remodel on floor 10; additions are 14 duct detectors, 10 speaker/strobes, and 1 strobe. ref pa #201905241605. maher na unit 0 | Heating and cooling | $29,060 | — | issued | 201908098356 |
| Sep 12, 2016 | otc alterations permit: 8th floor - t.i. includes new non-structural door & glass partition. no new hvac or mech. work. building is fully sprinklers unit 0 | Heating and cooling | $20,000 | — | cancelled | 201609076919 |
| Sep 1, 2016 | otc alterations permit: 7th & 8th floors: molutre stations install 84 electrical plugs unit 0 | Electrical | $3,500 | — | cancelled | 201608034099 |
| Jun 23, 2016 | otc alterations permit: 6th & 10 th floors for "airware" fire alarm: add 2 duct detectors, 4 speaker/strobes - 6th, and relocate 6 speaker/strobes 10th maher na. ref pa 2016-0516-7491 unit 0 | Heating and cooling | $5,000 | — | issued | 201606170186 |
| Jun 23, 2016 | otc alterations permit: 12 th flr "william blair" fire alarm: ti remodel - additions are are 8 duct detectors and 11 speaker.strobes. maher na ref pa 2016-0518-7789 unit 0 | Heating and cooling | $10,490 | — | Finaled Sep 6, 2016 | 201606159982 |
| May 9, 2016 | otc alterations permit: 10th floor: fire sprinkler "william blair" ti ref pa 2016 02119388: add 16 duct detectors, 6 speakers, 14 speaker/strobes, 1 strobe. replace 8 smoke det., 3 duct det.,and 5 modules. maher na unit 0 | Heating and cooling | $27,180 | — | issued | 201605096859 |
| Apr 29, 2016 | otc alterations permit: fire alarm work to add 1 duct detector onto the "orange theory fitness" remodel on floor 1. initial f.a. devices were added under pa 2016-0406-4029. ref pa 2016-0120-7414. maher na unit 0 | Heating and cooling | $610 | — | Finaled May 12, 2016 | 201604296007 |
| Apr 27, 2016 | otc alterations permit: revision to 2016 0120 7414: addition of 1 heat pump mechanical unit maher na unit 0 | Heating and cooling | $21,000 | — | issued | 201604275778 |
| Apr 25, 2016 | sign - erect: #125 - install an electric single faced signs hanging in front of window. n/a maher ordinance unit 0 | Electrical | $7,000 | — | Finaled Sep 8, 2016 | 201602250535 |
| Mar 17, 2016 | otc alterations permit: fire alarm work for the "roof deck" area on floor 14; additions are 2 weather proof speaker/strobes. ref pa 2016-0114-7137. maher na unit 0 | Roofing | $1,000 | — | Finaled Nov 10, 2016 | 201603172272 |
| Feb 10, 2016 | otc alterations permit: ste 125, change of use from office to fitness training. ti of existing space on 1st floor to include new partitions, lighting, re-assignment of existing electrical, counter, upgrade front entry and ada restrooms & shower. maher na unit 0 | Electrical | $450,000 | — | Finaled May 20, 2016 | 201601207414 |
| Jan 14, 2016 | otc alterations permit: mechanical and elec work. new deiffusers, reuse existing duct and new ducts, new power, lighting for tenant. l/s and fire sprinklers sep permit unit 0 | Heating and cooling | $250,000 | — | issued | 201601126872 |
| Nov 13, 2015 | otc alterations permit: 9th floor, ste 900 mechanical & electrical for permits 2015-7131-1291 and revision 2015-0902-5958. n/a maher ord. # 155-13 unit 0 | Electrical | $246,500 | — | Finaled Feb 11, 2016 | 201510099297 |
| Nov 10, 2015 | otc alterations permit: project consist of bringing existing balcony deck to accessibility and egress code compliance. existing tenant space is current vacant. mechanical, electrical, life safety and sprinkler system are under seperate permit. n/a ordinance #155-13 unit 0 | Electrical | $20,000 | — | Finaled Jun 15, 2017 | 201510028652 |
| Jul 23, 2015 | otc alterations permit: #125- demolition of all interiors partitions, glazing, millwork and doors per ab-017. architectural, mechanical, electrical, life safety and sprinkler modification are under seperate permit. n/a ordinance #155-13 unit 0 | Electrical | $15,000 | — | Finaled Aug 24, 2015 | 201507201909 |
| May 20, 2015 | otc alterations permit: 12th flr: install 1/5 ton unit water source heat pump. programmable thermostat. maher na ef pa 2015 0420 4035 unit 0 | Heating and cooling | $40,000 | — | Finaled Jan 5, 2016 | 201505075600 |
| Apr 29, 2015 | otc alterations permit: demolition, framing/drywall, 1 d/f/h, paint, floor patch, acoustical ceiling patch. sprinkler, hvac modification and elec deferred unit 0 | Heating and cooling | $120,000 | — | Finaled Jan 5, 2016 | 201504204035 |
| Mar 3, 2015 | otc alterations permit: 15th flr: t.i. on an existing full floor tenant demolition of few partitions, doors, finishes and electrical. construction of new partition, doors, electrical and finishes. mep and life safety and sprinkler under separate permit. mahner n/a unit 0 | Electrical | $30,000 | — | issued | 201502249217 |
On Sansome St
260 permits on record on Sansome St.
| Trade | Permits | Since Oct 3, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 22 | 3 | — | under 5 | Jun 12, 2026 |
| Heating and cooling | 119 | 20 | $77,503 | $14,991–$1,123,613 | Aug 21, 2026 |
| Electrical | 82 | 18 | $150,000 | $1,500–$382,500 | Jul 10, 2026 |
| Plumbing | 35 | 10 | $190,000 | $10,800–$416,105 | Jul 29, 2026 |
| Solar | 2 | 1 | — | under 5 | Dec 27, 2024 |
Roof replacement cost in San Francisco
Across 5,896 one- and two-family reroof permits since October 3, 2024, most declared values run from $7,650 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,788 and $21,763. The lowest on record is $1 and the highest $4,315,170. Every permit behind that range.
Furnace, heat pump or air conditioner replacement cost in San Francisco
Across 291 one- and two-family heating and cooling permits since October 3, 2024, most declared values run from $1 to $224,616 (the middle 80%); the median is $25,196 and half fall between $5,000 and $116,433. The lowest on record is $1 and the highest $1,600,000. Every permit behind that range.
Source
San Francisco Department of Building Inspection, via DataSF, pulled nightly; the assessor roll for the property fields. As of October 3, 2026. Owner names are not shown on any page.