Updated: Apr 25, 2026
Location and Projects
Address
2185 OAKLAND ROAD, San Jose, CA, 95131
Use our bidding system to
request a quote
United Mechanical Builder Inc
United Mechanical Builder Inc, 2185 Oakland Rd, San Jose, CA (Employees: Jan Erik Gundersen, Leonard Ceasere Bertolami, and Thomas Lee Sosine) holds a Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal, Plumbing, General Building, Boiler, Hot Water Heating And Steam Fitting, Refrigeration license and 1 other license according to the California license board.
Their BuildZoom score of 111 ranks in the top 4% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring United Mechanical Builder Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
United Mechanical Builder Inc Contact Information
Phone Number: (408) 232-9000
Edit
Address: 2185 OAKLAND ROAD, San Jose, CA 95131
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
United Mechanical Builder Inc San Jose
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
United Mechanical Builder Inc has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
72 projects
|
2025 |
|
61 projects
|
2024 |
|
44 projects
|
2023 |
Our building permit records indicate that United Mechanical Builder Inc has worked on at least
177.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
9 projects
|
Commercial Renovations |
|
4 projects
|
Home Additions |
|
45 projects
|
HVAC projects |
|
11 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that United Mechanical Builder Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
< $5k |
|
6 projects
|
$5k-$20k |
|
8 projects
|
$20k-$50k |
|
10 projects
|
$50k-$100k |
|
14 projects
|
$100k-$250k |
|
2 projects
|
$250k-$500k |
|
4 projects
|
$500k-$1mil |
|
4 projects
|
$1mil+ |
The typical size of their permits is approximately $78,500. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by United Mechanical Builder Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Scope of work to include: · new interior non-structural non-fire-rated partition walls and doors. · new lighting · new hvac distribution and zoning · remodel of existing offices and restrooms · new finishes throughout · site work and structural
Valuation:
$258,000
Permit #:
2025 092542 CI
Status:
issued
Fee:
$7,398
Permit Type:
Office
Building Type:
N/A
Converting existing ground level office space into office amenity spaces and a public cafe. exterior work proposes new storefront entries operable glazed doors a cantilevered balcony improvements to existing wharf and associated seismic upgrades
Valuation:
$15,000,000
Permit #:
202503263103
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
We are installing a new expansion device on one of the mcquay 800-ton water-cooled chillers on the roof of the building in an enclosed mechanical space. the expansion device will be installed on the existing chiller by the mechanical contractor. the expansion device generates electricity and the electrical contractor will be connecting the generator to one of the existing electrical p... see more
Valuation:
$77,000
Permit #:
BLD25-01253
Status:
issued
Fee:
$4,800
Permit Type:
N/A
Building Type:
N/A
Commercial water heater replacement from gas to electric building #6160 for workday remove and replace (1) gas water heaters with (1) new electric water heaters - all plumbing distribution piping to remain. provide electrical infrastructure for new water heaters from closest electrical panel with available spare capacity
Valuation:
$78,500
Permit #:
B24-3530
Status:
final
Fee:
$432
Permit Type:
N/A
Building Type:
N/A
Commercial water heater replacement from gas to electric building #6130 for workday remove and replace (1) gas water heater with(1) new electric water heater - all plumbing distribution piping to remain. provide electrical infrastructure for new water heaters from closest electrical panel with available spare capacity
Valuation:
$78,500
Permit #:
B24-3526
Status:
final
Fee:
$432
Permit Type:
N/A
Building Type:
N/A
To accommodate a 0-5yr childcare center. will serve approximately 60 children in 4 classrooms: 1 infant 1 toddler & 2 pre-k. will contain a family resource center & teacher/staff lounge. interior demolition as req. non-bearing partitions mep replace (e) windows & doors. (n) lula elevator
Valuation:
$4,700,674
Permit #:
202402075425
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
45 - school
Replace (2) gas water heater to (2) new electric water heaters in building #6000 for workday all plumbing distribution piping to remain. provide electrical infrastructure for new water heaters from closest electrical panel with available spare capacity
Valuation:
$160,000
Permit #:
B24-3504
Status:
final
Fee:
$1,044
Permit Type:
N/A
Building Type:
N/A
L6: tenant improvement new interior partitions doors windows ceilings casework flooring finishes and mep. work isolated to office area only
Valuation:
$1,385,390
Permit #:
202505146500
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Permit to final bld2018-50197. mechanical alteration of 1st floor to include installation of a water source heat pump water pumps and associated ductwork/piping.bld2018-50195 electrical work revision 5/14/2018 - anchor 80 racks (n) server cabinet ladder rack and bus supports
Valuation:
$538,345
Permit #:
BLD23-68318
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Building 804 (vari hall)- remove existing boiler and hot water pump and install (2) new hot water boilers with new hot water pumps and associated piping
Valuation:
$434,320
Permit #:
BLD24-04103
Status:
issued
Fee:
$14,465
Permit Type:
N/A
Building Type:
N/A
Commercial water heater replacement from gas to electric building #6150 for workday remove and replace (1) gas water heaters with (1) new electric water heaters - all plumbing distribution piping to remain. provide electrical infrastructure for new water heaters from closest electrical panel with available spare capacity
Valuation:
$78,500
Permit #:
B24-3528
Status:
final
Fee:
$432
Permit Type:
N/A
Building Type:
N/A
Work category: 5m; level 35 install (16) reheat vav's (1) water source heat pump (1) inline pump for condenser water. install heating hot water supply and return piping install condenser water supply and return piping
Valuation:
N/A
Permit #:
PMW20250617991
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 8p; decommission of boiler serial# 1648104100516 and installation of boiler serial# 2311133356291 decommission of boiler serial #1650104253308 and installation of boiler serial# 2401137275581 wo# 112443
Valuation:
N/A
Permit #:
PW20250527511
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
18/fl-ref tenant improvement 202412025941- install ductwork to (e) main and (n) vav boxes grilles connect (n) heating hot water piping to (e)
Valuation:
$150,000
Permit #:
202503111972
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
10 - office
Work category: 5m; install (1) water cooled heat pump. install (4) fan coil units. install condensing water supply & return piping. install refrigeration liquid & gas piping. condensate by others (plumbers)
Valuation:
N/A
Permit #:
PMW20241230011
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; 3rd floor: remove and replace existing plumbing fixtures in core restroom. install new dcw waste and vent piping to (2) break room sinks (1) wellness room sink and (1) drinking fountain. install (2) new backflows under breakroom sinks for coffee makers
Valuation:
N/A
Permit #:
PW20250902748
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; level 24 mens restroom - (2) water closets (3) urinals (3) lavatories (1) floor drain womens restroom - (5) water closets (3) lavatories (1) floor drain gnr - (1) water closets (1) lavatory (1) mother's room sink (1) drinking fountain (1) electric water heater (1) condensate drain from fcu (1) break area sink - there will be a backflow preventer undersink lf-009
Valuation:
N/A
Permit #:
PW20250826600
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; level 23 mens restroom - (3) water closets (3) urinals (3) lavatories (1) floor drain womens restroom - (6) water closets (3) lavatories (1) floor drain gnr - (1) water closets (1) lavatory (1) drinking fountain (1) electric water heater (1) condensate drain from fcu (1) break area sink - there will be a backflow preventer undersink lf-009
Valuation:
N/A
Permit #:
PW20250826599
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; level 9 mens restroom - (2) water closets (3) urinals (3) lavatories (1) floor drain womens restroom - (4) water closets (3) lavatories (1) floor drain gnr - (1) water closets (1) lavatory (1) drinking fountain (1) wellness room sink (1) janitors sink - (1) electric water heater (1) condensate drain from fcu (1) pantry/break area sink - there will be a backflow prev... see more
Valuation:
N/A
Permit #:
PW20250826598
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 5p; level 10 mens restroom (3) water closets (3) urinals (3) lavatories (1) floor drain womens restroom (5) water closets (3) lavatories (1) floor drain gnr (1) water closets (1) lavatory (1) drinking fountain (1) wellness room sink (1) janitors sink (1) electric water heater condensate drain (1) pantry/break area sink - there will be a backflow preventer undersink lf-009
Valuation:
N/A
Permit #:
PW20250826597
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
149
BZ Score
$11.9K
Avg Project
-
Projects
149
BZ Score
$10.5K
Avg Project
-
Projects
145
BZ Score
$4.5K
Avg Project
-
Projects
United Mechanical Builder Inc Reviews
BuildZoom hasn't received any reviews for United Mechanical Builder Inc. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you an HVAC pro in your area today
We'll search our vast network of HVAC Pros and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
United Mechanical Builder Inc License info
Verified License
| License # | 828335 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Sheet Metal, Plumbing, General Building, Boiler, Hot Water Heating And Steam Fitting, Refrigeration |
| Business Type | Corporation |
- BuildZoom verified this license was active as of December 2025.
Verify this license's status for United Mechanical Builder Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 962593 |
| Status | Inactive |
| State | California |
| Type | Plumbing |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for United Mechanical Builder Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Bonded
| Bonded Agent | State National Insurance Company Inc |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Mid Century Insurance Company |
599
Permits
- Building permit records show that United Mechanical Builder Inc has worked on 599 permitted projects.
United Mechanical Builder Inc Employees
JG
Jan Erik Gundersen
Officer
LB
Leonard Ceasere Bertolami
Rmo
TS
Thomas Lee Sosine
Ceo / President
WH
William Joseph Hadinger
Rmo