Updated: Mar 02, 2026
Location and Projects
Address
Forest Hill, MD, 21050
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Ronald G. Los Plumber
Ronald G. Los, Forrest Hill, MD holds a Plumbers license and 1 other license according to the Maryland license board.
Their BuildZoom score of 100 ranks in the top 13% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Ronald G. Los, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Ronald G. Los Services
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Ronald G. Los Contact Information
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Ronald G. Los Forrest Hill
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Ronald G. Los has a BuildZoom score of 100, which places them above 87% of 58,058 contractors in Maryland.
Activity
|
12 projects
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that Ronald G. Los has worked on at least
13.0 projects over the past 2 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
|
12 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Ronald G. Los mostly works on
plumbing project
projects.
Pricing
|
1 project
|
$5k-$20k |
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.
Interior trades only of the original two family dwelling. work done to obtain a city approved occupancy permit. no increase or elimination are being made to the original structure
Valuation:
N/A
Permit #:
BRCM-25-009942
Status:
complete
Fee:
$199
Permit Type:
Interior trades only
Building Type:
N/A
Reinstate original permit.(original permit:com2023-87090:install (24) # branch circuits/feeders (1) 200 amps electric service up to 600v (#amps) (1) 200 amps new electrical meters (1) 30000 btu air-con system heat pump (1) # new distribution system (1-2 family) (7) # plumbing fixtures (1) # water service pipe (reconstruction) (1) # sanitary connection (reconstruction0 (1) # gas test ... see more
Valuation:
N/A
Permit #:
COM2024-87701
Status:
complete
Fee:
$52
Permit Type:
Other
Building Type:
N/A
Remove and replace underground sewer lines for 2 bathrooms reconstruct water and waste install 1 fifty gallon water heater. install 15 new fixtures as per code
Valuation:
N/A
Permit #:
BRCM-25-009445
Status:
complete
Fee:
$283
Permit Type:
Interior trades only
Building Type:
N/A
Reconstruct water and waste and 10 new fixtures 1 gas test install 24 new circuits with 200 amp service install 2 and 1/2 ton condenser and a coil 80000 btu furnace install 3 bathroom fans as per code
Valuation:
N/A
Permit #:
BRCM-25-014258
Status:
payment due
Fee:
$141
Permit Type:
Interior trades only
Building Type:
N/A
Reconstruct water and waste install 8 new fixtures as per code 1 gas test connect stove and furnace as per code
Valuation:
N/A
Permit #:
BRCM-25-008467
Status:
complete
Fee:
$199
Permit Type:
Interior trades only
Building Type:
N/A
Remove and replace underground sewer lines for 2 bathrooms reconstruct water and waste install 1 fifty gallon water heater. install 15 new fixtures as per code
Valuation:
N/A
Permit #:
BCCM-25-003549
Status:
triage
Fee:
N/A
Permit Type:
Interior trades only
Building Type:
N/A
Reconstruct water and waste new water heater addition 4 new fixtures
Valuation:
N/A
Permit #:
BRCM-25-010481
Status:
complete
Fee:
$125
Permit Type:
Interior trades only
Building Type:
N/A
Reconstruct water and waste as per code install 10 new fixtures
Valuation:
N/A
Permit #:
BRCM-25-018588
Status:
payment due
Fee:
$120
Permit Type:
Interior trades only
Building Type:
N/A
Install 5 new plumbing fixtures as per code
Valuation:
N/A
Permit #:
BRCM-25-017795
Status:
complete
Fee:
$52
Permit Type:
Interior trades only
Building Type:
N/A
Install 7 new plumbing fixture as per code
Valuation:
N/A
Permit #:
BRCM-25-013833
Status:
complete
Fee:
$62
Permit Type:
Interior trades only
Building Type:
N/A
Install 1- 40 gallon electric water heater
Valuation:
N/A
Permit #:
BRCM-25-004529
Status:
complete
Fee:
$46
Permit Type:
Interior trades only
Building Type:
N/A
Water connection only. cc fee paid on building permit printed
Valuation:
N/A
Permit #:
W01200097
Status:
complete
Fee:
$8,569
Permit Type:
N/A
Building Type:
N/A
Rough-in and finish new single family dwelling
Valuation:
N/A
Permit #:
P02192014
Status:
complete
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
1, 000, 000 furnace-rework gas main to furnace to new spray booth
Valuation:
N/A
Permit #:
P02182746
Status:
complete
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
Install handi cap bathroom in janitorial
Valuation:
N/A
Permit #:
P02187678
Status:
complete
Fee:
$60
Permit Type:
N/A
Building Type:
N/A
Plumbing layout per drawings (3) floor sinks
Valuation:
N/A
Permit #:
P02167420
Status:
complete
Fee:
$105
Permit Type:
N/A
Building Type:
N/A
100000 furnace
Valuation:
N/A
Permit #:
P02184392
Status:
complete
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
Remove and replace 700000 btu hot water bolier and reconnect gas to new boiler as per code
Valuation:
N/A
Permit #:
COM2024-93512
Status:
closed - void
Fee:
N/A
Permit Type:
Other
Building Type:
N/A
Install (1) # water service pipe (reconstruction) (8) # plumbing fixtures (1) # sanitary connection (reconstruction0 as per code
Valuation:
N/A
Permit #:
COM2024-95277
Status:
complete
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Install 24 new circuits install 90%-80 000 btu furnace install 3 ton condenser & a coil remove and replace 11 plumbing fixtures as per code
Valuation:
$15,000
Permit #:
BRCM-25-022386
Status:
complete
Fee:
$297
Permit Type:
Trade work only
Building Type:
N/A
Similar Contractors See more
120
BZ Score
-
Avg Project
-
Projects
120
BZ Score
$1.5K
Avg Project
-
Projects
120
BZ Score
$1.5K
Avg Project
-
Projects
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Verified License
BuildZoom confirmed this contractor's license
Ronald G. Los License info
Verified License
| License # | 19518 |
| Status | Active |
| State | Maryland |
| Type | Plumbers |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Ronald G. Los at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 82004 |
| Status | Active |
| State | Maryland |
| Type | Heating, Ventilation, Air Conditioning And Refrigeration |
| Class | Heating, Ventilation, Air Conditioning and Refrigeration |
- When BuildZoom last verified this license, it had an expiration date of August, 2018. Check the current license status of Ronald G. Los with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
18
Permits
- Building permit records show that Ronald G. Los has worked on 18 permitted projects.
Ronald G. Los Employees
RL
Ronald G. Los
Owner