Updated: May 19, 2026
Location and Projects
Address
PO Box 6, Beallsville, MD, 20839
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Cornerstone Construction
Cornerstone Inc, Beallsville, Po Box 6, Beallsville, MD (Owned by: Ronald Magaha Jr) holds a Home Improvement license and 2 other licenses 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 Cornerstone Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Cornerstone Inc Services
Start a project today:
Custom Home Build
New Home Construction
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Other Residential Remodel
Roofing
Hardwood Flooring
Carpets
Laminate Flooring
Other Flooring
Framing
Wood Fences
Drywall
Interior Plaster
Flatwork Concrete
Foundations
Other Concrete
Demolition
Paving, Driveways, and Side...
Excavation and Grading
Other Site Work
Garage Construction
Gutters and Flashing
Skylights
Sea Walls
Small Multi-Family New Cons...
Small Multi-Family Remodel ...
Whole Home Remodel
Modular Home Construction
Addition
Vertical Addition
Horizontal Addition
Cornerstone Inc Contact Information
Phone Number: (301) 972-8700
Address: PO Box 6, Beallsville, MD 20839
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construction of one new 8630 sq ft barn as shown on city stamped plans; permit to include building and electrical work. note: request for certificate of use/occupancy is on separate permit #cmis-
Valuation:
$700,000
Permit #:
BCN-2485-2013
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Residential building uses permit
Relocating door to bedroom upstairs. opening up the wall between kitchen-dining room. taking an existing closet and converting into a half bathroom. using existing hallway to increase bathroom size
Valuation:
$50,000
Permit #:
141658
Status:
issued
Fee:
N/A
Permit Type:
Alteration
Building Type:
Single family dwe...
On-site improvements including removal and replacement of collapsed storm drain on private property
Valuation:
N/A
Permit #:
SITE-8845-2015
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Will have office, lounge, guest room, down stairs, (stable hand quarters upstairs
Valuation:
N/A
Permit #:
B9100554
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Earthen floor w/floating slab under aisleway, wash room, tack room &feed room
Valuation:
N/A
Permit #:
B0101981
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Heat in tack room only. barn incl. util room. 15 stalls. pole style building
Valuation:
N/A
Permit #:
B9901896
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New dwg. will be replacing mobile home/will remove trailer when house is
Valuation:
N/A
Permit #:
B9203856
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mudrm/laundry to rear of garage(existing septic)
Valuation:
N/A
Permit #:
B9100552
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
133420
Status:
final
Fee:
$344
Permit Type:
Garage & shed
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
B9701546
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
B8702131
Status:
APPR
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ELE-38821
Status:
issued
Fee:
$57
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ELE-38821-1
Status:
issued
Fee:
$57
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
132094
Status:
expired
Fee:
$75
Permit Type:
Residential
Building Type:
N/A
Cornerstone Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Cornerstone Inc License info
Verified License
| License # | 74560 |
| Status | Active |
| State | Maryland |
| Type | Home Improvement |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Cornerstone 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 # | 26662 |
| Status | Active |
| State | Pennsylvania |
| Type | Contractor Corp Part |
- When BuildZoom last verified this license, it had an expiration date of July, 2015. Check the current license status of Cornerstone Inc with the Pennsylvania Office of the Attorney General
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 26662 |
| Status | Active |
| State | Maryland |
| Type | Contractor (Corppart) Home Improvement |
- When BuildZoom last verified this license, it had an expiration date of July, 2015. Check the current license status of Cornerstone Inc with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
92
BuildZoom Score
11
Permits
- Building permit records show that Cornerstone Inc has worked on 11 permitted projects.
Cornerstone Inc Employees
RJ
Ronald Magaha Jr
Owner