Updated: Jul 23, 2026
Location and Projects
Address
Baltimore, MD, 21227
Use our bidding system to
request a quote
John Albert Mercer Jr Plumber
John Albert Mercer Jr, Baltimore, MD holds a Plumbers license and 1 other license according to the Maryland license board.
Their BuildZoom score of 92 ranks in the top 32% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring John Albert Mercer Jr, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
John Albert Mercer Jr Services
Start a project today:
John Albert Mercer Jr Contact Information
Phone Number: (410) 789-4483
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Building Permits by John Albert Mercer Jr
This is a sample of this contractor's permits. Click here to access their complete permit history.
Residential plumbing addition alteration permit
2014-02-10
Single family dwelling relocate existing plumbing fixtures in master bath/1-bathtub/1-shower/1-urinal/2-lavs/1-water closet
Valuation:
N/A
Permit #:
P14000554
Status:
complete
Fee:
$105
Permit Type:
N/A
Building Type:
N/A
Install 400 of trench drains inside warehouse
Valuation:
N/A
Permit #:
P02303505
Status:
complete
Fee:
$55
Permit Type:
N/A
Building Type:
N/A
Single family dwelling install plumbing fixtures 2-bathtubs/3-lavs/2-water closets/1-kitchen sink/1-bar sink/1-disposal/1-dishwasher/1-water heater/2-sill cocks
Valuation:
N/A
Permit #:
P11005193
Status:
complete
Fee:
$149
Permit Type:
N/A
Building Type:
N/A
Residential plumbing addition alteration permit
2013-09-17
Single family dwelling addition full bathroom to basement to existing rough-in 1 bathtub 1 lav 1 water closets
Valuation:
N/A
Permit #:
P13004147
Status:
complete
Fee:
$89
Permit Type:
N/A
Building Type:
N/A
Plumbing for a tenant install 2 water closets 2 lav. 1 stand pipe 1 wate r cooler and waste and water line
Valuation:
N/A
Permit #:
P02223591
Status:
complete
Fee:
$140
Permit Type:
N/A
Building Type:
N/A
Plumbing for rebuild install new water and waste piping and new plumbing g fixtures for new house
Valuation:
N/A
Permit #:
P02223745
Status:
complete
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
Residential plumbing addition alteration permit
2014-04-08
Sfd/permit for final inspection only -- see plumbing permit p12000069
Valuation:
N/A
Permit #:
P14001354
Status:
complete
Fee:
$78
Permit Type:
N/A
Building Type:
N/A
Afia international market install plumbing fixtures/1-2 or 3 compartment sink/1-greasetrap
Valuation:
N/A
Permit #:
P13001882
Status:
complete
Fee:
$160
Permit Type:
N/A
Building Type:
N/A
Natural gas only run gas line to the dryer and water heater and roo f top unit
Valuation:
N/A
Permit #:
P02223632
Status:
complete
Fee:
$65
Permit Type:
N/A
Building Type:
N/A
Plumbing for an alteration install water and waste piping for one new bathroo m
Valuation:
N/A
Permit #:
P02224069
Status:
complete
Fee:
$70
Permit Type:
N/A
Building Type:
N/A
Water and sewer connections previously connected printed
Valuation:
N/A
Permit #:
W01600421
Status:
complete
Fee:
$85
Permit Type:
N/A
Building Type:
N/A
Single family dwelling install plumbing in new addition 3-bathtubs/1-shower/5-lavs/3-water closets/1-kitchen sink/1-disposal/1-dishwasher/1-water heater/2-sill cocks
Valuation:
N/A
Permit #:
P08001242
Status:
complete
Fee:
$171
Permit Type:
N/A
Building Type:
N/A
Single family dwelling install plumbing fixtures in basement 1-bathtub/2-lavs/1-water closets/1-laundry tray
Valuation:
N/A
Permit #:
P11004536
Status:
complete
Fee:
$100
Permit Type:
N/A
Building Type:
N/A
Plumbing for an addition install waterand waste pipeing for basemet bathroo m and sink
Valuation:
N/A
Permit #:
P02215098
Status:
complete
Fee:
$80
Permit Type:
N/A
Building Type:
N/A
Alteration to an existing building install new plumbing under ground and drin line wa ter piping for catering
Valuation:
N/A
Permit #:
P02204181
Status:
canceled
Fee:
$135
Permit Type:
N/A
Building Type:
N/A
Other gas run propane gas to fireplace and generator
Valuation:
N/A
Permit #:
P02225448
Status:
complete
Fee:
$65
Permit Type:
Gas
Building Type:
Single family dwe...
Single family dwelling install gas piping & gas fixtures 1-cooktop/1-furnace/1-dryer/1-gas logs standard low pressure amend permit #p08001242
Valuation:
N/A
Permit #:
P08001917
Status:
complete
Fee:
$94
Permit Type:
N/A
Building Type:
N/A
Replacement of existing fixtures install a 40 gal.electric water hearter
Valuation:
N/A
Permit #:
P02214019
Status:
complete
Fee:
$55
Permit Type:
N/A
Building Type:
N/A
Plumbing for new structure install water and waste lines and rough in only fo r basement bathroom
Valuation:
N/A
Permit #:
P02204833
Status:
complete
Fee:
$125
Permit Type:
N/A
Building Type:
N/A
Other gas converting from propane to natural gas install lin e to meter. two pizza overs 135btus
Valuation:
N/A
Permit #:
P02203082
Status:
complete
Fee:
$65
Permit Type:
N/A
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
John Albert Mercer Jr Reviews
BuildZoom hasn't received any reviews for John Albert Mercer Jr. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you a plumber in your area today
We'll search our vast network of Plumbers and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
John Albert Mercer Jr License info
Verified License
| License # | 4944 |
| Status | Active |
| State | Maryland |
| Type | Plumbers |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for John Albert Mercer Jr at the Maryland Department of Labor, Licensing & Regulation.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Annapolis |
| Type | Plumbing Cont |
- According to the The City of Annapolis, MD, 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 John Albert Mercer Jr at the The City of Annapolis, MD.
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
76
Permits
- Building permit records show that John Albert Mercer Jr has worked on 76 permitted projects.
John Albert Mercer Jr Employees
JJ
John Albert Mercer Jr
Owner