Updated: Mar 02, 2026
Location and Projects
Address
87 LOOMIS ST, San Francisco, CA, 94124
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DMG Construction Plumber
DMG Construction Co, 87 Loomis St, San Francisco, CA (Employees: David Guan and David Guan) holds a Electrical, General Building, Boiler, Hot Water Heating And Steam Fitting, Plumbing, Warm Air Heating, Ventilating And Air Conditioning 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 DMG Construction Co, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
DMG Construction Co Services
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DMG Construction Co Contact Information
Phone Number: (415) 515-0007
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Address: 87 LOOMIS ST, San Francisco, CA 94124
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DMG Construction Co San Francisco
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
DMG Construction Co has a BuildZoom score of 111, which places them above 96% of 336,931 contractors in California.
Activity
|
4 projects
|
2026 |
|
55 projects
|
2025 |
|
28 projects
|
2024 |
|
20 projects
|
2023 |
Our building permit records indicate that DMG Construction Co has worked on at least
107.0 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
|
4 projects
|
Home Additions |
|
3 projects
|
Commercial Renovations |
|
83 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that DMG Construction Co mostly works on
plumbing project
and home addition
projects.
Pricing
|
5 projects
|
< $5k |
|
10 projects
|
$5k-$20k |
|
6 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
1 project
|
$100k-$250k |
The typical size of their permits is approximately $15,000. 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.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Work category: 1p; decommission existing hydronic boiler 2009 raypak serial # 0904295564. this is a memorialization permit work was completed and signed off as part of the overall project scope
Valuation:
N/A
Permit #:
PW20250511169
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Rev 202108206838- relocate laundry area from upper level to lower level addition partition wall between media and office area at lower level change use of second level bedrooms into office and study rooms. addition ballard in garage and vents for garage door
Valuation:
$2,000
Permit #:
202404190401
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Waterheater and furnace: replace existing gas water heater with new heat pump water heater and replace existing gas furnace with new heat pump ac; both the new heat pump water heater and air handler will be replacing existing units within the basement area revision 1 - sub panel like for like replacement - located in the basement (to the left of the stairs)
Valuation:
$18,000
Permit #:
MEP-2023-288571
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace gas water heater with heat pump water heater install power circuit for 5-ton heat pump hvac install induction stove power receptacle
Valuation:
N/A
Permit #:
EW202501153499
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace gas fired water heater with heat pump water heater replace gas furnace with 3-ton heat pump hvac
Valuation:
N/A
Permit #:
PW20250313753
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 2pa; replace gas water heater with heat pump water heater install heat pump hvac
Valuation:
N/A
Permit #:
PW20250306594
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace kitchen cabinet with new - same layout addition countertop receptacles
Valuation:
$43,700
Permit #:
202505307622
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
27 - 1 family dwe...
Install 100a subpanel heat pump dryer circuit heat pump water heater heat pump hvac
Valuation:
N/A
Permit #:
EW202505226637
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace existing gas fired water heater with heat pump water heater
Valuation:
N/A
Permit #:
PW20250115359
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace existing panel with new panel with more spaces install heat pump hvac
Valuation:
N/A
Permit #:
EW202506016811
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace gas water heater with heat pump water heater
Valuation:
N/A
Permit #:
PW20250321932
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace gas water heater with heat pump water heater
Valuation:
N/A
Permit #:
PW20250313752
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; replace gas water heater with heat pump water heater
Valuation:
N/A
Permit #:
PW20250308619
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; safe off and remove backflow device wilkins model #975xl2se serial # w390396 for chiller make up. this is a memorialization permit
Valuation:
N/A
Permit #:
PW20241117189
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Reconnect kitchen sink dishwasher and refrigerator water supply
Valuation:
N/A
Permit #:
PP20250530578
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install power circuit for heat pump water heater and heat pump hvac
Valuation:
N/A
Permit #:
EW202503134915
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install countertop receptacles and kitchen appliance power
Valuation:
N/A
Permit #:
E202505302843
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install 100a subpanel heat pump water heater heat pump hvac
Valuation:
N/A
Permit #:
EW202505296747
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1p; install 80 gallon heat pump water heater
Valuation:
N/A
Permit #:
PW20250511168
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Work category: 1m; replace gas furnace with heat pump hvac
Valuation:
N/A
Permit #:
PMW20250424776
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
DMG Construction Co License info
Verified License
| License # | 833910 |
| Status | Active |
| State | California |
| Type | Electrical, General Building, Boiler, Hot Water Heating And Steam Fitting, Plumbing, Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for DMG Construction Co 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 | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Hartford Fire Insurance Company |
134
Permits
- Building permit records show that DMG Construction Co has worked on 134 permitted projects.
DMG Construction Co Employees
DG
David Guan
Sole Owner
DG
David Guan
Rmo / Ceo / Pres