Ronald Joseph Mafrici
- Listed as
- authorized agent-others, contractor, designer
- Firm
- R M I Mechanical Contractors
- Based in
- South San Francisco
- On San Francisco permits
- Dec 2007 to May 2026
42 permits since 2000 (contractor on 42 permits, authorized agent-others on 3 permits, designer on 1 permit): 36 completed, 6 never finaled.
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 20, 2026 | Completed final sign-off Jun 2026 | 595 Market St | R M I Mechanical Contractors | 12/fl- ref 202604018691- add tranfer fan, ceiling supply diffusers and return air grilles, ductwork, relocate thermostats and air balanceDetails
12/fl- ref 202604018691- add tranfer fan, ceiling supply diffusers and return air grilles, ductwork, relocate thermostats and air balance | $10,000 |
| Apr 23, 2026 | Completed final sign-off Jul 2026 | 595 Market St | R M I Mechanical Contractors | 20/f: relocate one water cooled heat pump, add one transfer fan, relocate one vav box, add supply diffusers and return air grilles. new ductwork, new condenser water piping, relocate thermostats and air balancing. ref bpa 202602266597Details
20/f: relocate one water cooled heat pump, add one transfer fan, relocate one vav box, add supply diffusers and return air grilles. new ductwork, new condenser water piping, relocate thermostats and air balancing. ref bpa 202602266597 | $200,000 |
| Apr 23, 2026 | Completed final sign-off Jul 2026 | 595 Market St | R M I Mechanical Contractors | 22nd floor add 2 water cooled heat pumps, add 2 transfer fans, relocate on vav box, add supply diffusers & return air grilles. new ductwork, new condenser water piping, new heat pump thermostats, relocate vav thermostats, and air balancing. ref bldg permit # 202602266610.Details
22nd floor add 2 water cooled heat pumps, add 2 transfer fans, relocate on vav box, add supply diffusers & return air grilles. new ductwork, new condenser water piping, new heat pump thermostats, relocate vav thermostats, and air balancing. ref bldg permit # 202602266610. | $250,000 |
| Apr 9, 2026 | Completed final sign-off Sep 2026 | 400 Howard St | R M I Mechanical Contractors | 4/fl- add 2 heat pumps, supply fan, exhaust fan, and 3 smoke dampers. (n) ductworks, condenser water piping, ceiling and sidewall grilles, 2 thermostats, and air balance. ref-202602196138Details
4/fl- add 2 heat pumps, supply fan, exhaust fan, and 3 smoke dampers. (n) ductworks, condenser water piping, ceiling and sidewall grilles, 2 thermostats, and air balance. ref-202602196138 | $150,000 |
| Feb 11, 2026 | Completed final sign-off Mar 2026 | 595 Market St | R M I Mechanical Contractors | ste 1300 - add 1 transfer fan, relocate 1 vav box and add diffusers, add registers & grilles, new ductwork, air balance, and relocate thermostats. ref pa 202512171962Details
ste 1300 - add 1 transfer fan, relocate 1 vav box and add diffusers, add registers & grilles, new ductwork, air balance, and relocate thermostats. ref pa 202512171962 | $35,000 |
| Feb 11, 2026 | Completed final sign-off Mar 2026 | 595 Market St | R M I Mechanical Contractors | ste 1200 - add 1 transfer fan, relocate 1 box, add diffusers, add registers & grilles. new ductwork, air balances and relocate thermostats. ref pa 202512172039Details
ste 1200 - add 1 transfer fan, relocate 1 box, add diffusers, add registers & grilles. new ductwork, air balances and relocate thermostats. ref pa 202512172039 | $22,500 |
| Feb 11, 2026 | Completed final sign-off Mar 2026 | 595 Market St | R M I Mechanical Contractors | ste 1215-1285 - add 1 transfer fan, add diffusers, add registers & grilles, new ductwork, air balance and relocate thermostat. ref pa 202512171960Details
ste 1215-1285 - add 1 transfer fan, add diffusers, add registers & grilles, new ductwork, air balance and relocate thermostat. ref pa 202512171960 | $45,000 |
| Aug 29, 2024 | Completed final sign-off Dec 2024 | 455 Market St | R M I Mechanical Contractors | add 1 vav with eating coil, add 3 heating coils to existing vavs, add 1 transfer fan, add ceiling and sidewall diffusers, new ductwork and hot water piping, add 1 thermostat and relocate thermostats, and air balance.Details
add 1 vav with eating coil, add 3 heating coils to existing vavs, add 1 transfer fan, add ceiling and sidewall diffusers, new ductwork and hot water piping, add 1 thermostat and relocate thermostats, and air balance. | $150,000 |
| Oct 21, 2022 | Never finaled issued Oct 2022, no final | 100 Montgomery St | R M I Mechanical Contractors | 13/f: add (3) vav boxes, relocate (1) box, add diffusers/registers, new ductwork, relocate thermostat, air balance. ref bpa#202208120417Details
13/f: add (3) vav boxes, relocate (1) box, add diffusers/registers, new ductwork, relocate thermostat, air balance. ref bpa#202208120417 | $72,500 |
| Oct 14, 2022 | Completed final sign-off May 2023 | 250 Montgomery St | R M I Mechanical Contractors | ste 200. add one vav box, add supply and return air registers, add new ductwork and heating water piping, add and relocate (e) thermostates. ref pa# 202207259238Details
ste 200. add one vav box, add supply and return air registers, add new ductwork and heating water piping, add and relocate (e) thermostates. ref pa# 202207259238 | $20,000 |
| Sep 16, 2022 | Completed final sign-off Apr 2023 | 250 Montgomery St | R M I Mechanical Contractors | 9/f: add vav box, add diffusers & registers in the t.i. space, provide new ductwork, relocate (1) thermostat & air balance. ref bpa#202104208943Details
9/f: add vav box, add diffusers & registers in the t.i. space, provide new ductwork, relocate (1) thermostat & air balance. ref bpa#202104208943 | $25,000 |
| Sep 12, 2022 | Completed final sign-off Jan 2023 | 180 Montgomery St | R M I Mechanical Contractors | 12th fl. ste 1250. add 7 vav boxes and transfer fan, add ceiling diffusers and grilles, new ductwork, new thermostats and air balance. ref 202206216683.Details
12th fl. ste 1250. add 7 vav boxes and transfer fan, add ceiling diffusers and grilles, new ductwork, new thermostats and air balance. ref 202206216683. | $35,000 |
| Aug 11, 2022 | Completed final sign-off Dec 2022 | 180 Montgomery St | R M I Mechanical Contractors | ste 1520: add 5 vav boxes aadd ceiling supply difusers and grilles, new duct work add 5 thermostats, and air balanceDetails
ste 1520: add 5 vav boxes aadd ceiling supply difusers and grilles, new duct work add 5 thermostats, and air balance | $27,500 |
| Jul 22, 2022 | Completed final sign-off Nov 2022 | 180 Montgomery St | R M I Mechanical Contractors | suite 1950: add (8) vav boxes, add ceiling diffusers & grilles, new ductwork, new thermostats, & air balanceDetails
suite 1950: add (8) vav boxes, add ceiling diffusers & grilles, new ductwork, new thermostats, & air balance | $40,000 |
| Jun 16, 2022 | Never finaled issued Jun 2022, no final | 100 Montgomery St | R M I Mechanical Contractors | 14th fl: add 2 transfer fans, relocate ceiling diffusers, relocate thermostats, and air balance. ref pa# 202204132090.Details
14th fl: add 2 transfer fans, relocate ceiling diffusers, relocate thermostats, and air balance. ref pa# 202204132090. | $8,000 |
| May 18, 2022 | Completed final sign-off Feb 2023 | 214 Grant Av | R M I Mechanical Contractors | 4th fl: add a transfer fan, new ductwork, new ceiling diffusers and grilles. relocate thermostats, and air balancing. ref pa# 202201125838.Details
4th fl: add a transfer fan, new ductwork, new ceiling diffusers and grilles. relocate thermostats, and air balancing. ref pa# 202201125838. | $30,000 |
| Apr 28, 2022 | Never finaled issued Apr 2022, no final | 455 Market St | R M I Mechanical Contractors | ste 1460: add 2 vav boxes. add 1 transfer fan. new ductwork. new heating piping, control work, and air balance. bldg pa# 202201286899.Details
ste 1460: add 2 vav boxes. add 1 transfer fan. new ductwork. new heating piping, control work, and air balance. bldg pa# 202201286899. | $40,000 |
| Nov 9, 2021 | Completed final sign-off Dec 2021 | 100 Montgomery St | R M I Mechanical Contractors | add 10 vav boxes, 5 transfer fans. new ductwork, new diffusers, thermostates for new & (e) vav boxes, relocate thermostates for perimeter induction units, air balance, ref t.i. 2020 0113 1756Details
add 10 vav boxes, 5 transfer fans. new ductwork, new diffusers, thermostates for new & (e) vav boxes, relocate thermostates for perimeter induction units, air balance, ref t.i. 2020 0113 1756 | $110,000 |
| Oct 28, 2021 | Completed final sign-off Nov 2021 | 455 Market St | R M I Mechanical Contractors | suite# 1900. add 5 vav terminal units iwth controls, add 1 transfer fan for it room, new ductwork, add & relocate thermostates & air balance.Details
suite# 1900. add 5 vav terminal units iwth controls, add 1 transfer fan for it room, new ductwork, add & relocate thermostates & air balance. | $90,000 |
| Oct 15, 2021 | Completed final sign-off May 2022 | 455 Market St | R M I Mechanical Contractors | 21st floor:add 2 transfer fans modify extg hvac systems, relocate thermostats and air balance.Details
21st floor:add 2 transfer fans modify extg hvac systems, relocate thermostats and air balance. | $8,000 |
| Jul 26, 2021 | Completed final sign-off Aug 2022 | 434 Jackson St | R M I Mechanical Contractors | add one roof air conditining unit & thermostate, add 1 exhaust fan, add supply & return air grilles, new ductwok, and air balance.Details
add one roof air conditining unit & thermostate, add 1 exhaust fan, add supply & return air grilles, new ductwok, and air balance. | $25,000 |
| Jul 1, 2021 | Completed final sign-off Aug 2022 | 434 Jackson St | R M I Mechanical Contractors | add 2 rooftop heat pump units, add 2 furnaces and 2dx couls/air conditioning units, add 3 path exhaust fans. provide ductwork, refregerant piping, and controls for heat pump & ac systems.Details
add 2 rooftop heat pump units, add 2 furnaces and 2dx couls/air conditioning units, add 3 path exhaust fans. provide ductwork, refregerant piping, and controls for heat pump & ac systems. | $140,000 |
| Jun 26, 2020 | Never finaled issued Jul 2020, no final | 49 Stevenson St | R M I Mechanical Contractors | replace/add 12 vavs, add one exhaust fan, add one wshp, add one water pump, new ductwork, new water piping, temperature controls, and air balance. ref pa#202002134417Details
replace/add 12 vavs, add one exhaust fan, add one wshp, add one water pump, new ductwork, new water piping, temperature controls, and air balance. ref pa#202002134417 | $150,000 |
| Jan 27, 2020 | Completed final sign-off Mar 2020 | 655 Montgomery St | R M I Mechanical Contractors | suite 1720: add 1 transfer fan, replace 1 vav box, add diffusers and registers, add and reroute duct work air balance. work in office areas only. ref 201907085266Details
suite 1720: add 1 transfer fan, replace 1 vav box, add diffusers and registers, add and reroute duct work air balance. work in office areas only. ref 201907085266 | $40,000 |
| Jan 15, 2020 | Completed final sign-off Jul 2021 | 455 Market St | R M I Mechanical Contractors | mech for suite 300 on 3rd fl: add 1 heat pump, 4 vav boxes, add 2 fire smoke dampers, add 1 heat pump thermostat, add 4 vav thermostats. rleocate existing vav thermostats, new ductwork, & air balance. ref pa #201901241116.Details
mech for suite 300 on 3rd fl: add 1 heat pump, 4 vav boxes, add 2 fire smoke dampers, add 1 heat pump thermostat, add 4 vav thermostats. rleocate existing vav thermostats, new ductwork, & air balance. ref pa #201901241116. | $150,000 |
| Jan 15, 2020 | Completed final sign-off Jul 2021 | 455 Market St | R M I Mechanical Contractors | mech for suite 201 & 202 on 2nd fl: add 1 heat pump, add 3 transfer fans, add heat pump thermostat, relocate existing vav thermostats, new duct work, & air balanace. ref pa #201901241114.Details
mech for suite 201 & 202 on 2nd fl: add 1 heat pump, add 3 transfer fans, add heat pump thermostat, relocate existing vav thermostats, new duct work, & air balanace. ref pa #201901241114. | $60,000 |
| Nov 22, 2019 | Completed final sign-off Feb 2020 | 555 Montgomery St | R M I Mechanical Contractors | 11th fl - add 10 vav boxes with controls, add 1 fire smoke damper, new ductwork, and air balanceDetails
11th fl - add 10 vav boxes with controls, add 1 fire smoke damper, new ductwork, and air balance | $90,000 |
| Oct 10, 2019 | Completed final sign-off Sep 2020 | 555 Montgomery St | R M I Mechanical Contractors | 16th flr - add 1 vav box, add 6 fire smoke dampers, new and relocated thermostats, new ductwork and air balance. ref pa 2019-0717-6142.Details
16th flr - add 1 vav box, add 6 fire smoke dampers, new and relocated thermostats, new ductwork and air balance. ref pa 2019-0717-6142. | $50,000 |
| Jul 11, 2019 | Completed final sign-off Aug 2019 | 560 Mission St | R M I Mechanical Contractors | new ceiling supply diffusers, new return air grilles, relocate thormostats, new ductwork, & insulation, a d air balanceDetails
new ceiling supply diffusers, new return air grilles, relocate thormostats, new ductwork, & insulation, a d air balance | $40,000 |
| Feb 22, 2019 | Completed final sign-off Mar 2019 | 555 Montgomery St | R M I Mechanical Contractors | ref pa# 201811307180; add vav's diffusers, add ductwork, add thermostats, add one fan, and air balanceDetails
ref pa# 201811307180; add vav's diffusers, add ductwork, add thermostats, add one fan, and air balance | $120,000 |
| Jun 19, 2018 | Completed final sign-off Dec 2018 | 90 New Montgomery St | R M I Mechanical Contractors | ref pa# 201804196756; add one water source heat pump, add one vav box and/or relocate diffusers & registers, add and reroute duct work, add and relocate thermostats and air balancin. n/a maherDetails
ref pa# 201804196756; add one water source heat pump, add one vav box and/or relocate diffusers & registers, add and reroute duct work, add and relocate thermostats and air balancin. n/a maher | $40,000 |
| Mar 8, 2018 | Completed final sign-off Mar 2018 | 44 Montgomery St | R M I Mechanical Contractors | add 1 supply diffuser, replace 1 exhaust fan, relocate 1 return air grille, relocate 1 thermostat and air balance; n/a maherDetails
add 1 supply diffuser, replace 1 exhaust fan, relocate 1 return air grille, relocate 1 thermostat and air balance; n/a maher | $6,000 |
| Jan 11, 2018 | Completed final sign-off Jan 2018 | 214 Grant Av | R M I Mechanical Contractors | suite 400: replace (e) ductwork and sidewall and ceiling supply/return diffusers and grilles. add exhaust fan to it closet. relocate thermostats and air balance ref pa 201706139112Details
suite 400: replace (e) ductwork and sidewall and ceiling supply/return diffusers and grilles. add exhaust fan to it closet. relocate thermostats and air balance ref pa 201706139112 | $35,000 |
| Nov 16, 2017 | Never finaled issued Nov 2017, no final | 44 Montgomery St | R M I Mechanical Contractors | suite 1050 - add a split ac system to it room, add a ceiling exhaust fan to conf. room, relocate vav boxes, add supply air diffusers, sheet metal ductwork, new thermostat fpr ac system, relocate thermostats for vav's and air balance. bldg permit#2017-0814-4784.Details
suite 1050 - add a split ac system to it room, add a ceiling exhaust fan to conf. room, relocate vav boxes, add supply air diffusers, sheet metal ductwork, new thermostat fpr ac system, relocate thermostats for vav's and air balance. bldg permit#2017-0814-4784. | $55,000 |
| Oct 27, 2017 | Completed final sign-off Nov 2017 | 44 Montgomery St | R M I Mechanical Contractors | 29th floor suite 2920 - install ceiling diffusers, install new ceiling fan, relcoate thermostats, & air balance, new sheet metal ductwork. ref 201708144782. n/a maher ordinance.Details
29th floor suite 2920 - install ceiling diffusers, install new ceiling fan, relcoate thermostats, & air balance, new sheet metal ductwork. ref 201708144782. n/a maher ordinance. | $21,000 |
| Oct 27, 2017 | Completed final sign-off Nov 2017 | 44 Montgomery St | R M I Mechanical Contractors | 34th floor suite 3450 - add 2 van boxes, relcoate (e) vav boxes, & one ceiling fan & relcoate ceiling fans, add & relocate ceiling diffusers, add & relcoate thermostats, new sheet metal ductwork, & air balance. ref 201708144783. n/a maher ordinance.Details
34th floor suite 3450 - add 2 van boxes, relcoate (e) vav boxes, & one ceiling fan & relcoate ceiling fans, add & relocate ceiling diffusers, add & relcoate thermostats, new sheet metal ductwork, & air balance. ref 201708144783. n/a maher ordinance. | $60,000 |
| Oct 27, 2017 | Completed final sign-off Nov 2017 | 44 Montgomery St | R M I Mechanical Contractors | 9th floor suite 960 - install & relcoating ceiling diffusers, relcoate thermostats, relcoate ceiling fan & air balance. ref 201708144781. n/a maher ordinance.Details
9th floor suite 960 - install & relcoating ceiling diffusers, relcoate thermostats, relcoate ceiling fan & air balance. ref 201708144781. n/a maher ordinance. | $7,000 |
| May 3, 2017 | Completed final sign-off Dec 2017 | 325 Newhall St | R M I Mechanical Contractors | add 1 heat pump unit, add 2 supply fans, 1 restroom exhaust fan, 1 kitchen exhaust fan, 1 exhaust fan for elec room, provide sheet metal ductwork and 5 pipes for the above. ref 2016-1229-6154.Details
add 1 heat pump unit, add 2 supply fans, 1 restroom exhaust fan, 1 kitchen exhaust fan, 1 exhaust fan for elec room, provide sheet metal ductwork and 5 pipes for the above. ref 2016-1229-6154. | $50,000 |
| Jul 28, 2016 | Completed final sign-off Feb 2017 | 495 Geary St | R M I Mechanical Contractors | replace (e) fans with new , note: weight of new "fan coil "not to exceed weight of existing "fan coil" maher naDetails
replace (e) fans with new , note: weight of new "fan coil "not to exceed weight of existing "fan coil" maher na | $300,000 |
| Mar 23, 2015 | Completed final sign-off May 2015 | 838 Kearny St | R M I Mechanical Contractors | provide ductwork and supply/return diffusers and connect to (e) ductwork fron an (e) air handling unit. add 3 exhaust fans for the restrooms and the staff kitchn. ref. appl. 2014.0610.8036. maher n/a.Details
provide ductwork and supply/return diffusers and connect to (e) ductwork fron an (e) air handling unit. add 3 exhaust fans for the restrooms and the staff kitchn. ref. appl. 2014.0610.8036. maher n/a. | $40,000 |
| Jan 4, 2012 | Never finaled issued Feb 2012, no final | 610 Vallejo St | R M I Mechanical Contractors | revision to appl #200612200219: remove & install forced air furnaces (1) to heat sancuary & (1) to heat basement. 3 smoke/duct detectors. in kind replacement.Details
revision to appl #200612200219: remove & install forced air furnaces (1) to heat sancuary & (1) to heat basement. 3 smoke/duct detectors. in kind replacement. | $25,000 |
| Dec 20, 2007 | Completed final sign-off Jun 2008 | 301 Van Ness Av | R M I Mechanical Contractors | 4th & 5th floors hvac modifications.Details
4th & 5th floors hvac modifications. | $30,000 |