San Francisco · Montgomery St
420 Montgomery St, San Francisco
23 home-service permits on record at 420 Montgomery St, San Francisco; the roof was last permitted on Jan 26, 2024 at a declared value of $50,000.
Home-service permits on record at this address
| Issued | Work | Trade | Declared value | Contractor as filed | Status | Permit |
|---|---|---|---|---|---|---|
| Jan 26, 2024 | otc alterations permit: metal fence to be added to the roof at the roof parapet for security purposes. 20 sq ft area | Roofing | $50,000 | — | Finaled Jul 16, 2024 | 202311281480 |
| Nov 6, 2023 | otc alterations permit: stair replacement @ 2nd fl roof and machine room roof | Roofing | $170,000 | — | Finaled May 7, 2024 | 202310259440 |
| Jul 20, 2023 | ReRoof: reroofing. to comply with cool roof requirements per 2022 california energy code 141.0 2b. crrc 0742-0018. remove/replace old roof | Roofing | $350,000 | — | Finaled Feb 28, 2024 | 202306291147 |
| Sep 29, 2021 | otc alterations permit: electrical branch modifications associated to the new sewer ejectors & sump pump replacement project | Plumbing | $20,000 | — | Finaled Mar 29, 2022 | 202109098031 |
| Jul 21, 2021 | otc alterations permit: existing boiler stack retrofit with new category 3 double wall 316l flue liner. one new valuable speed draft inducedr fan and new boiler draft control system. associated structural and electrical included | Electrical | $200,000 | — | Finaled Jul 7, 2022 | 202106222946 |
| Oct 28, 2019 | additions alterations or repairs: fire alarm full flr ti on nsf2-3030. adding 2 addressable loop controller, fsd status panel of 5 fan/damper mod. 1 power supply. adding 18 duct dtectors, 72 dual monitor modules, 31 relay mod, 29 smoke detectors, 23 relays, 3 speakers and 5 speaker strobes | Heating and cooling | $87,000 | — | Finaled Dec 14, 2020 | 201910154540 |
| Aug 15, 2019 | additions alterations or repairs: change to existing permit #201805048292-revision is electrical and consists of removing new panels and moving the loafs to other panels to reduce cost by $323,000 | Electrical | $323,000 | — | Finaled Feb 2, 2021 | 201905080093 |
| May 8, 2019 | otc alterations permit: pa# 201805048292; modify sprinkler head locations to accomodate new ceiling & partition layout for renovated office space & electrical rooms for floors 2-10,12,13 | Electrical | $2,185 | — | Finaled Sep 4, 2019 | 201905080132 |
| Apr 3, 2019 | additions alterations or repairs: whole building. electrical service replacement, elect distribution repair & replacement, associated architectural/plumbing and hvac work to accomodate new electrical equipment installation. maher n/a | Heating and cooling | $8,000,000 | — | Finaled Mar 4, 2021 | 201805048292 |
| Oct 10, 2018 | otc alterations permit: 9th flr - ref 201806273171 fire alarm ti to nfs-3030 addining 1 strobe power supply, 36 speaker strobes, 29 speakers, 37 duct smk det, 3 control relays maher na | Heating and cooling | $28,400 | — | Finaled Jan 9, 2019 | 201810092678 |
| Jul 24, 2018 | otc alterations permit: 12/f: tenant improvement to e notifier nfs2 3030 adding 54 speaker strobe, 11 speakers, 4 strobes, 14 duct smoke detector, 14 control relays, 1 control relay for a/v shutdown | Heating and cooling | $21,600 | — | Finaled Oct 16, 2018 | 201807245411 |
| Jun 27, 2018 | otc alterations permit: 6th flr, for ti 201805038111 - 6 speaker strove and 2 duct smk det w/address control relay are being added to notifier nfs2-3030 maher na | Heating and cooling | $9,216 | — | issued | 201806263002 |
| May 31, 2018 | otc alterations permit: remodel of 6th floor: huddle room, focus room, upgrade mechanical and electrical of space. n/a for maher | Electrical | $50,000 | — | Finaled Nov 28, 2018 | 201805038111 |
| Mar 30, 2018 | otc alterations permit: interior tenant imrpovement on floor 12 inlcuding drywall ceilings, lighting electrical, mechanical finishes & plumbing | Plumbing | $3,146,240 | — | Finaled Nov 9, 2018 | 201801259519 |
| Mar 6, 2018 | otc alterations permit: remodel 9th fl, add new offices, new led lighging, finsihes for new offices area, offices, conference rooms, copy rooms, breakroom, restrooms no new plumbing fixtures added, elevator lobby. new mech plumbing, elec work new spaces. fire alarm/ls and fire sprinkelr under sep permit maher not req | Plumbing | $575,300 | — | Finaled Jan 10, 2019 | 201704285136 |
| Nov 30, 2017 | otc alterations permit: 2nd & 3rd flr: ti -hvac upgrade including notifier nfs2-3030; 2 duct smoke detector with internal control relays to new supply fan, 3 duct smoke detectors with internal control relay to 3 new fsd, 2 pendent mounted smoke det and 1 control relay to 1 fsd 2 speaker/strobe. ref201711022908 maher na | Heating and cooling | $8,300 | — | Finaled Dec 20, 2017 | 201711305134 |
| Nov 13, 2017 | otc alterations permit: retrofit air conditioning replacement ductwork, replace 3 fsd's with 3 fsd's in kind. fire alarm under separate permit . n/a maher | Heating and cooling | $295,000 | — | Finaled Mar 21, 2018 | 201711022908 |
| Oct 24, 2017 | otc alterations permit: 12/f- sprinkler permit per t.i. add , relocate , change out, remove . maher na. ref pa# 201710040322 | Heating and cooling | $50,000 | — | Finaled Dec 20, 2017 | 201710191689 |
| Dec 5, 2016 | otc alterations permit: fire alarm add 2 duct detectors and 2 relay modules due to tenant improvement in the basement ref 201604134637 maher not req | Heating and cooling | $2,900 | — | issued | 201612054123 |
| Oct 16, 2015 | otc alterations permit: fire alarm t.i. to 7/f- install new speaker/strobes, speakers, strobes, duct detectors & relays. t.i. pa#201506118730. n/a ordinance #155-13 | Heating and cooling | $12,000 | — | Finaled Jan 14, 2016 | 201510169943 |
| Sep 29, 2015 | otc alterations permit: fire alarm tin to 10th floor. 1 new transponder, 1 new booster panel, 6 new smoke detectors, 3 new duct detectors, 14 relays with isolation relays. 1 signal module, 16 speaker/strobe, 5 strobes. ti 2015-0401-2502 and 2015-0330-2232 | Heating and cooling | $19,400 | — | Finaled Mar 22, 2016 | 201509298299 |
| Aug 25, 2015 | otc alterations permit: 10th flr: partial demo - walls, floor and ceiling of tenant space. plumb fixtures to be removed/salvaged for bld. cap plumb for new future plumb in demo area. ref pa# 2015 03330 2232 | Plumbing | $130,000 | — | Finaled Oct 14, 2015 | 201504012502 |
| Aug 18, 2015 | otc alterations permit: 7th floor: t.i. including drywall ceilings. furnishings and modification to hvac and electrical. n/a for maher. life safety deferred | Heating and cooling | $1,560,000 | — | Finaled Jun 6, 2016 | 201506118730 |
On Montgomery St
849 permits on record on Montgomery St.
| Trade | Permits | Since Oct 5, 2024 | Median declared | Range | Last |
|---|---|---|---|---|---|
| Roofing | 69 | 14 | $16,250 | $1,501–$299,009 | Jun 26, 2026 |
| Electrical | 324 | 41 | $60,000 | $14,450–$200,000 | Sep 15, 2026 |
| Heating and cooling | 308 | 28 | $42,514 | $13,434–$292,800 | Aug 21, 2026 |
| Plumbing | 140 | 18 | $185,000 | $3,000–$1,290,000 | Sep 15, 2026 |
| Water heater | 6 | 0 | — | under 5 | May 11, 2023 |
| Solar | 2 | 0 | — | under 5 | Jul 16, 2021 |
Roof replacement cost in San Francisco
Across 5,872 one- and two-family reroof permits since October 5, 2024, most declared values run from $7,655 to $32,000 (the middle 80%); the median is $15,000 and half fall between $10,800 and $21,792. 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 5, 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 5, 2026. Owner names are not shown on any page.