Updated: Apr 20, 2026
Location and Projects
Address
4241 Norrisville Road, Rosedale, MD, 21237
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Dennis J. Diem Jr Plumber
Dennis J. Diem Jr, 4241 Norrisville Rd, Rosedale, MD holds a Plumbers license and 1 other license according to the Maryland license board.
Their BuildZoom score of 101 ranks in the top 12% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Dennis J. Diem Jr, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Dennis J. Diem Jr Services
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Dennis J. Diem Jr Contact Information
Phone Number: (443) 865-0389
Address: 4241 Norrisville Road, Rosedale, MD 21237
Dennis J. Diem Jr Rosedale
Quality
101
88th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Dennis J. Diem Jr has a BuildZoom score of 101, which places them above 88% of 58,058 contractors in Maryland.
Activity
|
11 projects
|
2025 |
|
4 projects
|
2024 |
|
4 projects
|
2023 |
Our building permit records indicate that Dennis J. Diem Jr has worked on at least
19.0 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
|
Home Additions |
|
4 projects
|
Commercial Renovations |
|
17 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Dennis J. Diem Jr mostly works on
plumbing project
and home addition
projects.
Pricing
|
5 projects
|
< $5k |
|
1 project
|
$5k-$20k |
|
1 project
|
$20k-$50k |
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.
Plumbing work to include: remodel master bathroom adding (1) full bathroom and (1) washer box. <div>related building permit #: <b>485514</b></div>
Valuation:
N/A
Permit #:
489404
Status:
issued
Fee:
$190
Permit Type:
Plumbperm
Building Type:
N/A
Install plumbing fixtures
Valuation:
N/A
Permit #:
P02322161
Status:
filed
Fee:
$222
Permit Type:
N/A
Building Type:
Single family dwe...
Replace all underground sanitary piping for 5 bathrooms
Valuation:
$30,000
Permit #:
PLUMC-2025-00046
Status:
issued
Fee:
$150
Permit Type:
N/A
Building Type:
N/A
Need to addition water service and waste and water recon
Valuation:
N/A
Permit #:
BRCM-25-017259
Status:
payment due
Fee:
$130
Permit Type:
Interior trades only
Building Type:
N/A
Install all plumbing to 15 plumbing fixtures and water heater
Valuation:
N/A
Permit #:
BRCM-25-013585
Status:
complete
Fee:
$125
Permit Type:
Interior trades only
Building Type:
N/A
Target #t-1044 install plumbing & gas fixtures 2-urinals/9-lavs/8-water closets/1-3 comparable sink/2-eye wash/1-mop sink/3-drinking fountains/2-elec water heater gas - 1-roof top units
Valuation:
N/A
Permit #:
P19001050
Status:
complete
Fee:
$463
Permit Type:
N/A
Building Type:
N/A
Re-pipe (4) existing rtus and addition (1) remote terminal unit
Valuation:
N/A
Permit #:
PG00027751
Status:
complete
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Reconstruct and relocate existing floor drains and (1) floor sink
Valuation:
N/A
Permit #:
P02317644
Status:
complete
Fee:
$195
Permit Type:
N/A
Building Type:
N/A
Replacement of public water and 40 gal electric water heater
Valuation:
N/A
Permit #:
202100062
Status:
issued
Fee:
N/A
Permit Type:
plumbing
Building Type:
N/A
Gas for new tenant to include make-up air unit on roof
Valuation:
N/A
Permit #:
PG00006461
Status:
complete
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
Harris teeter install gas and plumbing fixtures: 1 - kitchen sink 5 - sill cocks 1 - floor sink 7 - floor drains 4 - roof drains gas: 1 - furnace
Valuation:
N/A
Permit #:
P20001584
Status:
complete
Fee:
$254
Permit Type:
N/A
Building Type:
N/A
Commercial renovation panda express
Valuation:
N/A
Permit #:
PLC-22-0485
Status:
approved
Fee:
$605
Permit Type:
N/A
Building Type:
N/A
Plumbing for new tenant
Valuation:
N/A
Permit #:
P02306646
Status:
complete
Fee:
$95
Permit Type:
N/A
Building Type:
N/A
Replacement of existing fixtures replace 3 plumbing fixtures ( handsink 3 comparable sin k dishwasher w rinse board
Valuation:
N/A
Permit #:
P02280563
Status:
complete
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-04-23
Chick-fil-a - 823 ellsworth dr
Valuation:
$10
Permit #:
PFG-1474600-2024
Status:
final
Fee:
$2,690
Permit Type:
N/A
Building Type:
N/A
Install (1) 1.25 rpz
Valuation:
N/A
Permit #:
P02315639
Status:
complete
Fee:
$55
Permit Type:
N/A
Building Type:
N/A
Panda express - martin luther king jr hwy
Valuation:
N/A
Permit #:
PFG-1237936-2018
Status:
final
Fee:
$6,904
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2025-05-15
[none] - 825 ellsworth dr
Valuation:
$11
Permit #:
PFG-1438509-2023
Status:
final
Fee:
$49,932
Permit Type:
N/A
Building Type:
N/A
17 - (nr) - remodeling/additional work/tenant space
2020-02-21
[none] - 7101 democracy blvd
Valuation:
N/A
Permit #:
PFG-1266469-2019
Status:
final
Fee:
$2,029
Permit Type:
N/A
Building Type:
N/A
Install 5 gas line for heating units- 15 rtus -299k and 3-109k heating units
Valuation:
N/A
Permit #:
P02265239
Status:
complete
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
Dennis J. Diem Jr Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Dennis J. Diem Jr License info
Verified License
| License # | 62419 |
| Status | Active |
| State | Maryland |
| Type | Plumbers |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Dennis J. Diem Jr at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Unverified License
| License # | 3964 |
| Status | Unable To Verify |
| State | Maryland |
| Type | Master Plumbergas Fitter Plumbers |
- BuildZoom was not able to verify this license with the licensing board
This is a sample of licensing data; click here to access a complete history.
101
BuildZoom Score
118
Permits
- Building permit records show that Dennis J. Diem Jr has worked on 118 permitted projects.