Mazen Tawasha
- Listed as
- architect, engineer
- Firm
- Bayside Mechanical
- Based in
- San Mateo
- On San Francisco permits
- Jul 2005 to Sep 2026
48 permits since 2000 (engineer on 47 permits, architect on 1 permit): 29 completed, 8 in progress, 8 never finaled, 3 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. How to read these records
Most recent permits
| Filed | Outcome | Address | Contractor | Work described on the permit | Declared cost |
|---|---|---|---|---|---|
| Sep 14, 2026 | In progress filed Sep 2026, not yet issued | 660 03rd St | Bayside Mechanical Inc | remove 8 (e) rooftop package units. replace with 8 new units. reconnect existing duct, electrical, gas pipe, drain line and thermostat wire.Details
remove 8 (e) rooftop package units. replace with 8 new units. reconnect existing duct, electrical, gas pipe, drain line and thermostat wire. | $80,000 |
| Jul 31, 2026 | In progress filed Jul 2026, not yet issued | 451 Pacific Av | 3rd fl, mep for pa 202602125890Details
3rd fl, mep for pa 202602125890 | $1,000 | |
| Jul 14, 2026 | Completed final sign-off Sep 2026 | 240 Stockton St | C C I Commercial Construction & Improv | modify (e) duct and diffuser layout to match new layout @ 10th floor. ref to bpa: 202603258236Details
modify (e) duct and diffuser layout to match new layout @ 10th floor. ref to bpa: 202603258236 | $10,000 |
| Jul 14, 2026 | Completed final sign-off Sep 2026 | 240 Stockton St | C C I Commercial Construction & Improv | ste 300: modify (e) duct and diffuser layout to match new layout @ 3rd floor. ref to bpa: 202603258240Details
ste 300: modify (e) duct and diffuser layout to match new layout @ 3rd floor. ref to bpa: 202603258240 | $10,000 |
| Mar 16, 2026 | Completed final sign-off Jul 2026 | 155 Jefferson St | Noni Homes Inc | ground floor-ti includes interior modifications to create an open display space, break room, and storage area, upgrades to the (e) restroom to meet current accessiblity requirementsDetails
ground floor-ti includes interior modifications to create an open display space, break room, and storage area, upgrades to the (e) restroom to meet current accessiblity requirements | $175,000 |
| Mar 13, 2026 | Completed final sign-off Apr 2026 | 420 Cortland Av | Cookline Construction Inc | ti ground fl. convert from retail to retail & art studio. (n) 2 hour wall to separate retail from back of house ceramics studio.Details
ti ground fl. convert from retail to retail & art studio. (n) 2 hour wall to separate retail from back of house ceramics studio. | $7,002 |
| Feb 20, 2026 | In progress filed Feb 2026, not yet issued | 4534 Mission St | units (1,2,3,4,8): residential units remodeling with layout reconfiguration, bathroom remodeling, kitchen cabinet, sink and hood replacement. no exterior work.Details
units (1,2,3,4,8): residential units remodeling with layout reconfiguration, bathroom remodeling, kitchen cabinet, sink and hood replacement. no exterior work. | $100,000 | |
| Feb 9, 2026 | In progress issued Mar 2026 | 451 Pacific Av | Build Group Inc. | 2/fl- ref 202512192346- includes provide and install 5 fan coil units, run line set from units to heat pumps on the roofDetails
2/fl- ref 202512192346- includes provide and install 5 fan coil units, run line set from units to heat pumps on the roof | $130,000 |
| Nov 12, 2025 | In progress issued Jan 2026 | 451 Pacific Av | Build Group Inc. | core and shell mep. work includes osa supply unit, restroom exhaust and a riser for future ti permits. ref arch permit #202505126265.Details
core and shell mep. work includes osa supply unit, restroom exhaust and a riser for future ti permits. ref arch permit #202505126265. | $120,000 |
| Jul 29, 2025 | Completed final sign-off Jul 2026 | 960 Harrison St | Bayside Mechanical Inc | install a utility set exhaust fan & connect to 4 residential kitchen hoods belowDetails
install a utility set exhaust fan & connect to 4 residential kitchen hoods below | $3,000 |
| Jul 29, 2025 | Completed final sign-off Jul 2026 | 960 Harrison St | Bayside Mechanical Inc | install a utility set exhaust fan & connect to 4 residential kitchen hoods belowDetails
install a utility set exhaust fan & connect to 4 residential kitchen hoods below | $3,000 |
| Jul 29, 2025 | Completed final sign-off Jul 2026 | 960 Harrison St | Bayside Mechanical Inc | install a utility set exhaust fan & connect to 4 residential kitchen hoods belowDetails
install a utility set exhaust fan & connect to 4 residential kitchen hoods below | $3,000 |
| Jul 29, 2025 | Completed final sign-off Jul 2026 | 960 Harrison St | Bayside Mechanical Inc | to comply with nov 202311778 install a utility set exhaust fan & connect to 4 residential kitchen hoods belowDetails
to comply with nov 202311778 install a utility set exhaust fan & connect to 4 residential kitchen hoods below | $3,000 |
| Mar 21, 2025 | Completed final sign-off Nov 2025 | 2155 Bay Shore Bl | Dsd Construction Inc | interior commercial tenant improvement. new kitchen and restaurant at existing gr floor vacant deli space (change of use) new finishes and equipment. new accessible restrooom. no strucutral work. new mech & plumbing & eletrical workDetails
interior commercial tenant improvement. new kitchen and restaurant at existing gr floor vacant deli space (change of use) new finishes and equipment. new accessible restrooom. no strucutral work. new mech & plumbing & eletrical work | $178,150 |
| Feb 12, 2025 | In progress issued Feb 2025 | 1750 Taylor St | Black Mountain Development | unit #305: remodel primary bathroom and closet, remodel bath 2 and powder room, new cabinetry in bedroom 2 and entry, reconfigure kitchen including new appliances and finishes. new lighting throughout, new tile and waterproofing at balconies. replace in kind window wall on west bedroom and northDetails
unit #305: remodel primary bathroom and closet, remodel bath 2 and powder room, new cabinetry in bedroom 2 and entry, reconfigure kitchen including new appliances and finishes. new lighting throughout, new tile and waterproofing at balconies. replace in kind window wall on west bedroom and north | $100,000 |
| Dec 17, 2024 | Completed final sign-off Jul 2025 | 251 Rhode Island St | Marchetti Group | provide & install one new 5 ton packaged roof top unit, unit to omit on curb adapter, new stand alone thermostat, n) ductwork to match n) layout. n) linneardiffusers. n) power & signal divices thru the space, new 2022 compliant lighting & controls. ref to t.i. 202312152587 mep deferralDetails
provide & install one new 5 ton packaged roof top unit, unit to omit on curb adapter, new stand alone thermostat, n) ductwork to match n) layout. n) linneardiffusers. n) power & signal divices thru the space, new 2022 compliant lighting & controls. ref to t.i. 202312152587 mep deferral | $120,000 |
| May 20, 2024 | In progress filed May 2024, not yet issued | 1264 Folsom St | Schmitt Heating Co Inc | replace (e) heating/cooling units with 2 new roof mount package units and new ducting, condensate drains and thermostatDetails
replace (e) heating/cooling units with 2 new roof mount package units and new ducting, condensate drains and thermostat | $60,000 |
| Apr 30, 2024 | In progress issued Jan 2025 | 1264 Folsom St | Tadashi Wood Construction Company, Climbing Construction Inc. | (prop h) change of use from auto repair to fitness center. install (n) climbing walls on the main level. modify (e) level bathroom to make it ada compliant. hvac modificationDetails
(prop h) change of use from auto repair to fitness center. install (n) climbing walls on the main level. modify (e) level bathroom to make it ada compliant. hvac modification | $124,000 |
| Mar 18, 2024 | Completed final sign-off Aug 2024 | 220 Jackson St | Rossi Builders Inc. | 3rd fl ste 350: deferred mech & elec for pa# 202402226337. mechanical: install new duct work and diffusers from existing air handler. electrical: new power & signal decives throughtout space.Details
3rd fl ste 350: deferred mech & elec for pa# 202402226337. mechanical: install new duct work and diffusers from existing air handler. electrical: new power & signal decives throughtout space. | $45,000 |
| Apr 3, 2023 | Completed final sign-off Mar 2024 | 8 California St | provide and install 2 4.5 ton fan coiles with 2 5 ton unit condensersDetails
provide and install 2 4.5 ton fan coiles with 2 5 ton unit condensers | $30,000 | |
| Dec 28, 2022 | Never finaled issued Mar 2023, no final | 351 California St | Constructive Solutions Inc. | t.i. of basement space includes new non-load bearing partitions, millwork and finishes. all modifications to mechanical, electrical and plumbing systesm are deferred. convert (e) basement to gymDetails
t.i. of basement space includes new non-load bearing partitions, millwork and finishes. all modifications to mechanical, electrical and plumbing systesm are deferred. convert (e) basement to gym | $165,000 |
| Dec 20, 2022 | Completed final sign-off Jun 2023 | 580 Green St | Bayside Mechanical Inc | replace 4 existing rooftop mechanical hvac units with in-kindDetails
replace 4 existing rooftop mechanical hvac units with in-kind | $40,000 |
| Nov 8, 2022 | Completed final sign-off Jan 2025 | 643 Clay St | Bayside Mechanical Inc | provide and install type i hood, exhaust, grease duct and kitchen exhaust fan, with make up air unit and assoicated ductwork. limited restaurant under 102.Details
provide and install type i hood, exhaust, grease duct and kitchen exhaust fan, with make up air unit and assoicated ductwork. limited restaurant under 102. | $70,000 |
| Nov 2, 2022 | Completed final sign-off Sep 2023 | 1750 Taylor St | Black Mountain Development | provide and install 3/4 ton and one 1 ton split system hear pump cassette units to a one 5 ton unit condenser - provide and install one in line exhaust fan and duct it to all restrooms - all supply and return diffusers are to be 4ft x 1" linear type. ref bpa 202209233087Details
provide and install 3/4 ton and one 1 ton split system hear pump cassette units to a one 5 ton unit condenser - provide and install one in line exhaust fan and duct it to all restrooms - all supply and return diffusers are to be 4ft x 1" linear type. ref bpa 202209233087 | $10,000 |
| Jun 14, 2022 | Never finaled issued Jun 2022, no final | 588 Mission Bay Blvd North Bl | Bayside Mechanical Inc | provide and install one 4-ton heat pump, run refridgerant lines, ductwork, grd and thermostat. ref pa 202203199583Details
provide and install one 4-ton heat pump, run refridgerant lines, ductwork, grd and thermostat. ref pa 202203199583 | $15,000 |
| May 13, 2022 | Completed final sign-off Dec 2022 | 387 Arguello Bl | Bg Builders Inc | expansion of (e) general grocery and restaurant (387 arguello blvd) into the adjacent existing retail tanant space (2 clement st). scope limited to 2 clement st. (n) kitchen equipment, millwork, floor/ wall/ ceiling finishes and associated mep work. expansion to cua granted per motion no. m-20190.Details
expansion of (e) general grocery and restaurant (387 arguello blvd) into the adjacent existing retail tanant space (2 clement st). scope limited to 2 clement st. (n) kitchen equipment, millwork, floor/ wall/ ceiling finishes and associated mep work. expansion to cua granted per motion no. m-20190. | $74,650 |
| Apr 8, 2022 | Expired or cancelled expired Mar 2026 | 2799 24th St | Seamus Collins Construction, Inc. | revision to pa# 201608296214. revision to mechanical systems. new grease duct for future t.i..Details
revision to pa# 201608296214. revision to mechanical systems. new grease duct for future t.i.. | $4,000 |
| Oct 18, 2021 | Completed final sign-off Jun 2022 | 1960 Folsom St | Bayside Mechanical Inc | provide & install (6) new head pump split systems ductwork & diffusers. ref pa 2021-0816-6497Details
provide & install (6) new head pump split systems ductwork & diffusers. ref pa 2021-0816-6497 | $75,000 |
| Oct 18, 2021 | Completed final sign-off Oct 2022 | 360 Langton St | Bayside Mechanical Inc | replace 4 existing ac units and 2 split systems with newDetails
replace 4 existing ac units and 2 split systems with new | $45,000 |
| Feb 26, 2021 | Completed final sign-off Mar 2022 | 411 Columbus Av | C D R Construction | tenant improvement: take out 897 sqft. provide new kitchen hood. grease duct. new bathroor. new counters.Details
tenant improvement: take out 897 sqft. provide new kitchen hood. grease duct. new bathroor. new counters. | $100,000 |
| Feb 10, 2021 | Expired or cancelled withdrawn Mar 2021 | 2406 California St | Bayside Mechanical Inc | provide + install one new type ii hood. ref pa # 202011138899.Details
provide + install one new type ii hood. ref pa # 202011138899. | $8,000 |
| Sep 19, 2020 | Completed final sign-off Oct 2020 | 209 Post St | Bayside Mechanical Inc | 8/f: provide & install new ductwork & connect to existing. refer to pa# 202002063682.Details
8/f: provide & install new ductwork & connect to existing. refer to pa# 202002063682. | $3,000 |
| Sep 18, 2020 | Never finaled issued Oct 2020, no final | 2108 Hayes St | Bayside Mechanical Inc | provide & install new duct work and connect to existing plenums. ref pa# 202002184642.Details
provide & install new duct work and connect to existing plenums. ref pa# 202002184642. | $15,000 |
| Sep 13, 2019 | Never finaled issued Sep 2019, no final | 1300 Bryant St | Accurate Contracting Inc.Dba Unispace Co | 1/f: replace (e) split syst by it room, modify ductwork; install (1)5-ton & (2)4-ton cooling split system; install (3) exhaust fans & (2) gravity intake w/factory curbs; install (1)3-ton unit split system & ductwork for lobby/restrooms. 2/f: install ductwork/connect to (e) units;Details
1/f: replace (e) split syst by it room, modify ductwork; install (1)5-ton & (2)4-ton cooling split system; install (3) exhaust fans & (2) gravity intake w/factory curbs; install (1)3-ton unit split system & ductwork for lobby/restrooms. 2/f: install ductwork/connect to (e) units; | $75,000 |
| Jan 24, 2019 | Completed final sign-off May 2019 | 731 Sansome St | Bayside Mechanical Inc | provide and install 7 new air handlers, and one new cooling only split system, provide and install duct work and air diffusers. ref ti #201810092575. 3rd fl.Details
provide and install 7 new air handlers, and one new cooling only split system, provide and install duct work and air diffusers. ref ti #201810092575. 3rd fl. | $90,000 |
| Dec 21, 2018 | Never finaled issued Dec 2018, no final | 1001 Howard St | Cookline Construction Inc | rev to pa# 201805239927; revise mechanincal, one page, single noteDetails
rev to pa# 201805239927; revise mechanincal, one page, single note | |
| Dec 5, 2018 | Completed final sign-off Jul 2019 | 1061 Church St | Ortiz Heating And Air Conditioning Inc | installation of heating system to satisfy his complaint 201886531 dated 8/20/2018, (work at 1061 church st only)Details
installation of heating system to satisfy his complaint 201886531 dated 8/20/2018, (work at 1061 church st only) | $5,500 |
| May 23, 2018 | Completed final sign-off Mar 2019 | 1001 Howard St | Cookline Construction Inc | ref t.i. pa#201805048251: mechanical adjustments for limited use restaurant. maher n/a.Details
ref t.i. pa#201805048251: mechanical adjustments for limited use restaurant. maher n/a. | $165,000 |
| Feb 16, 2018 | Never finaled issued Feb 2018, no final | 953 Indiana St | Bayside Mechanical Inc | add (4) heat pumps condenser and (12) fan coils. maher naDetails
add (4) heat pumps condenser and (12) fan coils. maher na | $30,000 |
| Oct 25, 2017 | Completed final sign-off Oct 2019 | 1805 Geary Bl | Conner Consulting & Contracting | to comply w/nov #201755951 - replacement of fresh air suppply fans on the roof with equal size & weight. new fans to connect to existing. replacement of (e) exhaust fans on the roof with equal size & capacity. new fans to connect to existing.Details
to comply w/nov #201755951 - replacement of fresh air suppply fans on the roof with equal size & weight. new fans to connect to existing. replacement of (e) exhaust fans on the roof with equal size & capacity. new fans to connect to existing. | $75,000 |
| Sep 8, 2017 | Completed final sign-off Jan 2018 | 1425 Sansome St | D B I Contracting Inc | 1/f- t.i. for dental office including non-bearing walls, electrical, mechanical, plumbing, and finishes. sprinkler, f/a deferredDetails
1/f- t.i. for dental office including non-bearing walls, electrical, mechanical, plumbing, and finishes. sprinkler, f/a deferred | $90,000 |
| Mar 8, 2016 | Never finaled issued Apr 2016, no final | 622 Green St | Bayside Mechanical Inc | provide & install make up air unit (inline), new duct work, provide & install new louver, grease duct & connect to existing. ref #201510068968. n/a maher ordinanceDetails
provide & install make up air unit (inline), new duct work, provide & install new louver, grease duct & connect to existing. ref #201510068968. n/a maher ordinance | $19,000 |
| Feb 10, 2016 | Completed final sign-off Oct 2022 | 49 Drumm St | C & C General Engineering Inc. | existing 2 story office bldg over basement, gr fl to be converted to limited retaurant. new type 1 hood, hadicap toilet, provide service area prep area and storage, entry doors. structural work under separate permit. n/a maher ord. 155-13Details
existing 2 story office bldg over basement, gr fl to be converted to limited retaurant. new type 1 hood, hadicap toilet, provide service area prep area and storage, entry doors. structural work under separate permit. n/a maher ord. 155-13 | $60,000 |
| Jun 30, 2014 | Completed final sign-off Feb 2015 | 4800 Mission St | build one ada bathroom as per mep. n/a maher ordinanceDetails
build one ada bathroom as per mep. n/a maher ordinance | $8,300 | |
| Apr 15, 2011 | Completed final sign-off May 2011 | 1439 Haight St | Bayside Mechanical Inc | install a/c unit & duct work.install fan coil unit and condensing unit. run supply and return duct work to space. install line set piping from fan coil to condensing unit. install drain from fan coil to nearest drain.Details
install a/c unit & duct work.install fan coil unit and condensing unit. run supply and return duct work to space. install line set piping from fan coil to condensing unit. install drain from fan coil to nearest drain. | $8,000 |
| Apr 10, 2008 | Never finaled issued Aug 2009, no final | 3465 19th St | suspended by dbi-this is re-filing of new pa base on #200802285872 approve in error by planning incl int alter to convert ground flr retail to cafe includes renovate (e)bath to handicap bath. replace (e) front door w/h.c. compliant door. mep under separate permit.Details
suspended by dbi-this is re-filing of new pa base on #200802285872 approve in error by planning incl int alter to convert ground flr retail to cafe includes renovate (e)bath to handicap bath. replace (e) front door w/h.c. compliant door. mep under separate permit. | ||
| Jul 25, 2005 | Expired or cancelled expired Apr 2007 | 1600 Guerrero St | add a 10'hood,ex.fan,make up air unit,floor drain & grease trap.gas pipe for eq.ansul system underDetails
add a 10'hood,ex.fan,make up air unit,floor drain & grease trap.gas pipe for eq.ansul system under | $14,000 | |
| Jul 25, 2005 | Completed final sign-off Nov 2005 | 595 Ofarrell St | change hood to type i hood,new ex.fan & make up air.ansul system under seperate permitDetails
change hood to type i hood,new ex.fan & make up air.ansul system under seperate permit | $12,000 |