Hector Lopez
- Listed as
- contractor, engineer, subcontractor
- Firm
- Underpinning Specialist Inc.
- Based in
- San Jose
- On San Francisco permits
- Sep 2017 to May 2026
22 permits since 2000 (contractor on 20 permits, engineer on 1 permit, subcontractor on 1 permit): 10 completed, 1 in progress, 7 never finaled, 4 expired or cancelled.
This is the city’s permit record, not a license check: the role and the number come from what was written on each permit (the number spelled one way). It does not show whether the license is current. Their ranked record as a contractor is on their contractor page. How to read these records
Most recent permits
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| May 22, 2026 | Completed final sign-off Jul 2026 | 1310 Scott St | Underpinning Specialist Inc. | revision to pa# 202510237986. change two drilled piers to hand dug piers. no exterior work.Details
revision to pa# 202510237986. change two drilled piers to hand dug piers. no exterior work. | $10 |
| Oct 23, 2025 | Completed final sign-off Jul 2026 | 1310 Scott St | Underpinning Specialist Inc. | retrofit existing foundation with underpinning pits and drilled pins. approximately 36 cubic yards of excavation (less than 50 cubic yards max).Details
retrofit existing foundation with underpinning pits and drilled pins. approximately 36 cubic yards of excavation (less than 50 cubic yards max). | $230,000 |
| Jan 4, 2024 | Expired or cancelled expired Feb 2026 | 217 Holly Park Cr | Underpinning Specialist Inc., Bradford Construction | provide shoring for excavtion of basement area for construction under 202307172328.Details
provide shoring for excavtion of basement area for construction under 202307172328. | $30,000 |
| Mar 25, 2022 | Completed final sign-off May 2022 | 99 Prospect Av | Underpinning Specialist Inc. | repairs to existing concrete garage.Details
repairs to existing concrete garage. | $30,000 |
| Feb 16, 2022 | Expired or cancelled expired Oct 2024 | 3510 Sacramento St | Underpinning Specialist Inc. | foundation underpinning to fix due to neighbors constucion.Details
foundation underpinning to fix due to neighbors constucion. | $65,000 |
| Jan 28, 2022 | Never finaled issued Jan 2022, no final | 205 Fairmount St | Underpinning Specialist Inc. | to obtain final inspection for work approved under pa# 201610140358.Details
to obtain final inspection for work approved under pa# 201610140358. | |
| Aug 31, 2021 | Never finaled issued Apr 2022, no final | 606 Diamond St | Underpinning Specialist Inc. | 1)new storage & bath @ ground fl. new patio. 2) sister extg wood 2x faming with new 2x lvl. 3)provide shoring. 4)remove extg plaster lathe and replace with new 5/8" type gypDetails
1)new storage & bath @ ground fl. new patio. 2) sister extg wood 2x faming with new 2x lvl. 3)provide shoring. 4)remove extg plaster lathe and replace with new 5/8" type gyp | $40,000 |
| Aug 20, 2021 | Expired or cancelled expired Sep 2023 | 1967 Broadway | Underpinning Specialist Inc. | replace extg footing on west side of building with new reinforced concrete grade beams. voluntary seismic of craw space.Details
replace extg footing on west side of building with new reinforced concrete grade beams. voluntary seismic of craw space. | $70,000 |
| Jul 1, 2021 | Completed final sign-off Apr 2022 | 425 Diamond St | Underpinning Specialist Inc. | to comply with nov 202178321: foundation and ground floor remodel. lower slab to increase ceiling height. add bathroom, bedroom & family room.Details
to comply with nov 202178321: foundation and ground floor remodel. lower slab to increase ceiling height. add bathroom, bedroom & family room. | $100,000 |
| May 5, 2021 | Completed final sign-off Apr 2022 | 425 Diamond St | Underpinning Specialist Inc. | existing perimiter foundation of this house was sister w unreinforced concrete. remove e sister anre place w reinforced concrete sister against orig perimeter foundation. 8" wall w 5@12"oc. vert and 4@12" oc horz footing 36" embed, 12" thickand 36" wide w 5@ bottom. remove and replace a/b sequenceDetails
existing perimiter foundation of this house was sister w unreinforced concrete. remove e sister anre place w reinforced concrete sister against orig perimeter foundation. 8" wall w 5@12"oc. vert and 4@12" oc horz footing 36" embed, 12" thickand 36" wide w 5@ bottom. remove and replace a/b sequence | $50,000 |
| Apr 22, 2021 | Completed final sign-off Apr 2022 | 425 Diamond St | Underpinning Specialist Inc. | investigate source of ground water leak at lowest level @ laundry @ home office, remove slab on grade (exempt from permit)dig two test pits 18" sq by three feet deep slab to be replaced under subsequent permit.no change to exterior windows & door. no excavation.Details
investigate source of ground water leak at lowest level @ laundry @ home office, remove slab on grade (exempt from permit)dig two test pits 18" sq by three feet deep slab to be replaced under subsequent permit.no change to exterior windows & door. no excavation. | $2,500 |
| Apr 12, 2021 | Completed final sign-off Jul 2022 | 532 Roosevelt Wy | Rei Build Up Construction Corporation | structural revision based on field changes. ref app#201911268300Details
structural revision based on field changes. ref app#201911268300 | |
| Mar 16, 2021 | Completed final sign-off Sep 2021 | 139 Mangels Av | Underpinning Specialist Inc. | underpinning on west elevation of 139 mangels ave to coordinate with foundation/excavation of 149 mangels under site permit of 201607122060.Details
underpinning on west elevation of 139 mangels ave to coordinate with foundation/excavation of 149 mangels under site permit of 201607122060. | $70,000 |
| Dec 9, 2020 | Never finaled issued Jan 2021, no final | 606 Diamond St | Underpinning Specialist Inc. | replace deteriorated perimeter brick foundation.Details
replace deteriorated perimeter brick foundation. | $50,000 |
| May 19, 2020 | Never finaled issued Jun 2020, no final | 3723 22nd St | Underpinning Specialist Inc., Ewen Utting Inc. | provide temporary shoring and underpinnning system to facilitate excavation and construction of the proposed remodel and addition at 3719 22nd street per approved permit application # 2018-1023-3961.Details
provide temporary shoring and underpinnning system to facilitate excavation and construction of the proposed remodel and addition at 3719 22nd street per approved permit application # 2018-1023-3961. | $10,000 |
| Aug 12, 2019 | Expired or cancelled expired Oct 2020 | 442 Ashbury St | Underpinning Specialist Inc. | replace deterioated footing. interior work only.Details
replace deterioated footing. interior work only. | $40,000 |
| Jul 23, 2019 | Never finaled issued Jul 2019, no final | 442 Ashbury St | Underpinning Specialist Inc. | comply w/ correction notice ref pa 201905281756 issued by building inspector. install temp shoring of 1st flr, under direction of structural engineer. do no block exiting.Details
comply w/ correction notice ref pa 201905281756 issued by building inspector. install temp shoring of 1st flr, under direction of structural engineer. do no block exiting. | $5,000 |
| Jun 13, 2019 | Completed final sign-off Aug 2019 | 24 Belcher St | Underpinning Specialist Inc. | to comply with nov 201945891; underpin the north foundation as per plans to address foundation excavtion next door to the north at 20-22 belcherDetails
to comply with nov 201945891; underpin the north foundation as per plans to address foundation excavtion next door to the north at 20-22 belcher | $25,000 |
| May 28, 2019 | Never finaled issued May 2019, no final | 442 Ashbury St | Underpinning Specialist Inc. | non structural investigation of finish removal (plaster) at 1st fl. and test pits to verify botom of footing no obstruction of (e) replace after investigation w/ 5/8 type x 6ypDetails
non structural investigation of finish removal (plaster) at 1st fl. and test pits to verify botom of footing no obstruction of (e) replace after investigation w/ 5/8 type x 6yp | $5,000 |
| Oct 23, 2018 | Never finaled issued Nov 2019, no final | 3719 22nd St | Underpinning Specialist Inc. | horizontal addition. raise (e) 1st & 2nd stories to create a (n) garage entry, ramp & curbcut within the footprint. horizontal additions at the rear at 1st, 2nd, & 3rd stories. a (n) basement lvl at rear half of downsloping lot. full fire sprinkler system added under separate permit.Details
horizontal addition. raise (e) 1st & 2nd stories to create a (n) garage entry, ramp & curbcut within the footprint. horizontal additions at the rear at 1st, 2nd, & 3rd stories. a (n) basement lvl at rear half of downsloping lot. full fire sprinkler system added under separate permit. | $587,228 |
| Aug 2, 2018 | Completed final sign-off Apr 2022 | 483 30th St | Underpinning Specialist Inc. | remove vacant commercial space @ ground & convert to (n)garage & expansion of (e) single family dwelling. horizontal addition @ rear yard. vertical addition on 3rd fl. interior remodel: kitchen, (3)(n)baths, (4)bedrooms, laundry. (n)windows & patio doors throughout. (n)entry door & garage doorDetails
remove vacant commercial space @ ground & convert to (n)garage & expansion of (e) single family dwelling. horizontal addition @ rear yard. vertical addition on 3rd fl. interior remodel: kitchen, (3)(n)baths, (4)bedrooms, laundry. (n)windows & patio doors throughout. (n)entry door & garage door | $400,000 |
| Sep 6, 2017 | In progress issued Jun 2025 | 205 Fairmount St | Sjn Construction Llc | reference 202110130348 & 201610140358 add 1 bedrm, closet and complete foundation at ground flr. remove glass sunroom and rear deck at 2nd flr. horizontal expansion at building rear with adding new patio at ground flr; new family rm and deck at 2nd flr.Details
reference 202110130348 & 201610140358 add 1 bedrm, closet and complete foundation at ground flr. remove glass sunroom and rear deck at 2nd flr. horizontal expansion at building rear with adding new patio at ground flr; new family rm and deck at 2nd flr. | $75,000 |