Updated: Jan 14, 2026
Location and Projects
Address
San Francisco, CA, 94103
Use our bidding system to
request a quote
Mason Mechanical Services
Mason Mechanical Services, San Francisco, CA (Employee: Robert Peter Mason) holds a Warm Air Heating, Ventilating And Air Conditioning license according to the California license board.
Their BuildZoom score of 124 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mason Mechanical Services, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Mason Mechanical Services Services
Start a project today:
Mason Mechanical Services San Francisco
Quality
124
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Mason Mechanical Services has a BuildZoom score of 124, which places them above 99% of 336,931 contractors in California.
Activity
|
6 projects
|
2025 |
|
3 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Mason Mechanical Services has worked on at least
11.0 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
|
6 projects
|
HVAC projects |
|
5 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Mason Mechanical Services mostly works on
hvac project
and mechanical project
projects.
Pricing
|
1 project
|
< $5k |
|
2 projects
|
$5k-$20k |
|
2 projects
|
$20k-$50k |
The typical size of their permits is approximately $19,210. 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 Mason Mechanical Services
This is a sample of this contractor's permits. Click here to access their complete permit history.
Remove existing gas furnace from indoor closet and replace with new split system heat pump in east
Valuation:
$16,265
Permit #:
B2025-0538
Status:
final
Fee:
$256
Permit Type:
Residence HVAC re...
Building Type:
N/A
Work category: 1m; replace duct work with 26 gauge metal duct in machine room and garage. reroute exhaust flues. reinstall customer's existing furnace and water heater
Valuation:
N/A
Permit #:
PMW20240530152
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Convert gas to heat pump forced air system
Valuation:
$22,510
Permit #:
M2505-036
Status:
final
Fee:
$125
Permit Type:
Mini split/heat pump
Building Type:
N/A
Replace gas furnace with heat pump system
Valuation:
$19,210
Permit #:
B2025-0720
Status:
issued
Fee:
$259
Permit Type:
Residence HVAC re...
Building Type:
N/A
Replace existing water heater with heat pump water heater. replace gas furnace and cooling system with heat pump style system
Valuation:
$22,583
Permit #:
B31463
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
Residential
Replace two gas systems with new ductless and ducted heat pu
Valuation:
N/A
Permit #:
ME2507-0002
Status:
issued
Fee:
$650
Permit Type:
Mini-split HVAC -...
Building Type:
N/A
Work category: 1m; replaced gas fired water heater with new heat pump water heater
Valuation:
N/A
Permit #:
PMW20230227042
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace existing radiant gas heater with modern hi efficiency mini split heating and cooling system. outdoor condenser on roof top above customers property. indoor units are ceiling cassettes units in hallway. condensate drain to neutralizer
Valuation:
N/A
Permit #:
PMW20181010151
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; to comply with physical inspection report. #cc-8573 (mechanical)
Valuation:
N/A
Permit #:
PMW20240215647
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; to comply with physical inspection report #cc-8603 (mech permit)
Valuation:
N/A
Permit #:
PMW20240119004
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 24, 000 btu heat pump system with ductwork for upper floor
Valuation:
$21,137
Permit #:
B2022-04729
Status:
issued
Fee:
$166
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace existing gas furnace with hi eff heat pump system
Valuation:
N/A
Permit #:
PMW20220801656
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
1-/7/2020- mechanical permit to install 36k mini split heat pump system four indoor evaporated fan coils out outdoor condenser. building new adu 860 sq ft on property - see b2019-05405 for the demolish
Valuation:
$65,000
Permit #:
B2019-05408
Status:
final
Fee:
$6,335
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; install new heat pump system with ductwork
Valuation:
N/A
Permit #:
PMW20240702923
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; existing wall heater flue is turning at 90 degrees at exit of appliance. correct to straight up through roof as per code
Valuation:
N/A
Permit #:
PMW20190427586
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace existing heating system with new hi eff heat pump mini split system
Valuation:
N/A
Permit #:
PMW20190427589
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace 2nd furnace as part of 747 project
Valuation:
N/A
Permit #:
PMW20200521629
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace existing heating system with new condensing furnace and duct work
Valuation:
N/A
Permit #:
PMW20190427588
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace two furnaces and duct work
Valuation:
N/A
Permit #:
PMW20200521628
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace existing hot water flue
Valuation:
N/A
Permit #:
PMW20200213019
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mason Mechanical Services Reviews
BuildZoom hasn't received any reviews for Mason Mechanical Services. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Hiring a contractor?
Verified License
BuildZoom confirmed this contractor's license
Mason Mechanical Services License info
Verified License
| License # | 692130 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of January 2026.
Verify this license's status for Mason Mechanical Services at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
124
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Clear Spring Property & Casualty Company |
282
Permits
- Building permit records show that Mason Mechanical Services has worked on 282 permitted projects.
Mason Mechanical Services Employees
RM
Robert Peter Mason
Sole Owner