Updated: May 17, 2026
Location and Projects
Address
3493 FIRESTONE DR, Ijamsville, MD, 21754
Use our bidding system to
request a quote
Earth Retention Systems Construction
Earth Retention Systems Inc, 3493 Firestone Dr, Ijamsville, MD (Owned by: John S Duchaj Jr) holds a Home Improvement license and 1 other license according to the Maryland license board.
Their BuildZoom score of 93 ranks in the top 27% of 58,058 Maryland licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Earth Retention Systems Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Earth Retention Systems Inc Services
Start a project today:
Earth Retention Systems Inc Contact Information
Address: 3493 FIRESTONE DR, Ijamsville, MD 21754
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Earth Retention Systems Inc Ijamsville
Quality
93
73rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Earth Retention Systems Inc has a BuildZoom score of 93, which places them above 73% of 58,058 contractors in Maryland.
Activity
|
1 project
|
2024 |
Our building permit records indicate that Earth Retention Systems Inc has worked on at least
1.0 project 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.
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.
Building Permits by Earth Retention Systems Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct retaining wall; addition step to front stoop
Valuation:
$10,000
Permit #:
B02431055
Status:
filed
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Residential building uses permit
Construction of 10 x 10 deck with steps to grade on the rear of single family dwelling
Valuation:
$2,340
Permit #:
161109
Status:
issued
Fee:
N/A
Permit Type:
Addition
Building Type:
Single family dwe...
Remove existing bearing wall install i beam steel w/steel support column ****revised 11/12/09 to addition electrical to this permit pf***** (all electric involved is under #79332; 2nd building. permit for project is #78605)
Valuation:
$1,400
Permit #:
77959
Status:
complete
Fee:
$278
Permit Type:
Resuses
Building Type:
N/A
1008 sf of 2 stry add.16x34;play room, study, laundry room, spa rm&bathrooms on crawl space: revised name of rooms 4/11/05 lw|
Valuation:
$100,000
Permit #:
20693
Status:
issued
Fee:
N/A
Permit Type:
Addition
Building Type:
Single family dwe...
Residential building uses permit
8.5 x 12 deck
Valuation:
$6,800
Permit #:
103057
Status:
issued
Fee:
N/A
Permit Type:
Addition
Building Type:
Single family dwe...
Addition. built on #20693|creating closet above playroom w stairs 8x15
Valuation:
$5,000
Permit #:
25119
Status:
issued
Fee:
N/A
Permit Type:
Alteration
Building Type:
Single family dwe...
Similar Contractors See more
141
BZ Score
$8.5K
Avg Project
-
Projects
168
BZ Score
-
Avg Project
-
Projects
176
BZ Score
$20K
Avg Project
-
Projects
Earth Retention Systems Inc Reviews
BuildZoom hasn't received any reviews for Earth Retention Systems Inc. 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
Earth Retention Systems Inc License info
Verified License
| License # | 73273 |
| Status | Active |
| State | Maryland |
| Type | Home Improvement |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Earth Retention Systems Inc 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 # | 73273 |
| Status | Active |
| State | Maryland |
| Type | Contractor Home Improvement |
- When BuildZoom last verified this license, it had an expiration date of August, 2011. Check the current license status of Earth Retention Systems Inc with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
Earth Retention Systems Inc Employees
JJ
John S Duchaj Jr
Owner
JJ
John Scott Duchaj Jr