Updated: May 18, 2026
Location and Projects
Address
1012 RISING RIDGE ROAD, Mount Airy, MD, 21771
Use our bidding system to
request a quote
Keller Brothers Construction
Founded in 1960, Keller Brothers Inc operates as a family-owned general contractor with deep roots in Mount Airy, Maryland. Under the leadership of Phillip D. Keller, Jr., who serves as President and CEO, the company delivers construction services across Maryland, Washington, D.C., and Virginia. Keller Brothers manages projects from multiple regional offices, including locations in Mount Airy, Frederick, and Salisbury. The firm traces its origins to brothers Stanley G. Keller and Phillip D. (Dennis) Keller, whose approach has guided the company for over six decades. In addition to its core construction services, Keller Brothers has expanded its capabilities through Keller Special Projects and Keller Masonry, providing expertise for a wide range of building needs in both public and private sectors.
Keller Brothers Inc Services
Start a project today:
Keller Brothers Inc Contact Information
Phone Number: (301) 343-3927
Edit
Address: 1012 RISING RIDGE ROAD, Mt Airy, MD 21771
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Keller Brothers Inc Mt Airy
Quality
102
89th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Keller Brothers Inc has a BuildZoom score of 102, which places them above 89% of 58,058 contractors in Maryland.
Activity
|
2 projects
|
2025 |
|
4 projects
|
2024 |
|
6 projects
|
2023 |
Our building permit records indicate that Keller Brothers Inc has worked on at least
12.0 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
|
3 projects
|
Commercial Renovations |
|
3 projects
|
Home Additions |
Analyzing permits over the last 4 years shows that Keller Brothers Inc mostly works on
home addition
and commercial renovation
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$500k-$1mil |
|
2 projects
|
$1mil+ |
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.
Laurel fire department partial interior renovation to upgrade the finishes to 4 shower rooms
Valuation:
N/A
Permit #:
B25001727
Status:
canceled
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Hebb house renovation grading and sediment controls for west parking lot (per capital project c0365-9124)
Valuation:
N/A
Permit #:
G24000113
Status:
complete
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
Commercial alteration to improve building security and access control through construction of interior security vestibule and erection of permanent partitions within existing open space area to create enclosed and acoustically separate classrooms
Valuation:
$5,781,000
Permit #:
COMM-200296
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Revision - development services - capital improvement
2024-08-01
Additions and renovations to benjamin stoddert middle school
Valuation:
$4,400,000
Permit #:
RDSP-210015
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Howard county hebb house office of agriculture change of use & interior renovation to an existing two-story building with a basement including: renovation of existing space to create a functional office space with new finishes upgraded restrooms and furniture
Valuation:
N/A
Permit #:
B24003319
Status:
complete
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Public works and on-site improvements (on westbrook crown n3 property parcel f) including grading/sediment control utility connections storm drain and modifications to crown swm pond #3; and forest conservation improvements for crown high school as shown on approved plans/details
Valuation:
N/A
Permit #:
SITE-32470-2024
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Howard county detention facility to renovate two rooms (housing w-4 and housing e) from regular housing units to mental housing units. this includes removing repairing and adding cmu walls and installing sheet metal partitions. in addition partitions will be incorporated with polycarbonate glass along with the installment of new steel doors. re-routing of specific electrical units/con... see more
Valuation:
N/A
Permit #:
B23004100
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Booking building howard county department of corrections interior renovations to include replacement of finishes reassignment of rooms relocation of doc equipment minor electrical work replacement of 2 doors addition of a shower and floor drains
Valuation:
N/A
Permit #:
B23004413
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Splash pad and wading pool 36x42 westminster municipal pool
Valuation:
$650,000
Permit #:
CP-22-1541
Status:
issued
Fee:
$550
Permit Type:
N/A
Building Type:
N/A
Lap learning pool 28x75 westminster municipal pool
Valuation:
$650,000
Permit #:
CP-22-1542
Status:
issued
Fee:
$550
Permit Type:
N/A
Building Type:
N/A
Mental health and housing unit howard county dentention center interior renovations to include replacement of inmate cell doors new officers station partial height partitions
Valuation:
N/A
Permit #:
B23004414
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Thomas viaduct middle school/classroom interior alterations converting one large activity room into (2) classrooms 2nd area of alteration changing classroom layout
Valuation:
N/A
Permit #:
B22000516
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Howard county department of rec & parks interior alterations to renovate bathroom. will include partial demolish and reconfiguration of toilet room to make ada compliant **12.5.23 amendment to provide better footing detail** approved 12.7.23
Valuation:
N/A
Permit #:
B23002740
Status:
complete
Fee:
$50
Permit Type:
N/A
Building Type:
N/A
Howard county office of procrurement and contract administration interior alterations to put in a new data closet
Valuation:
N/A
Permit #:
B23001923
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct 94 feet long by 8.5 feet high concrete retaining wall
Valuation:
$250,000
Permit #:
CW-21-0413
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Howard county detention center exterior cladding around detention center
Valuation:
N/A
Permit #:
B23001932
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Revision to fire wall termination details at roof deck due to unforeseen existing conditions
Valuation:
$1
Permit #:
COMM-200277
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Construct industrial lot 19 improvements including pavement utilities and stormwater management
Valuation:
N/A
Permit #:
GR-21-0049
Status:
filed
Fee:
$587
Permit Type:
N/A
Building Type:
N/A
12 x 42 temporary construction trailer oakdale middle school addition permit#268435
Valuation:
$12,711
Permit #:
282073
Status:
complete
Fee:
N/A
Permit Type:
Trailer
Building Type:
N/A
*ccs denied* ellicott city fire station #2 alterations for bay extension
Valuation:
N/A
Permit #:
B24003004
Status:
complete
Fee:
$200
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
141
BZ Score
$8.5K
Avg Project
-
Projects
164
BZ Score
-
Avg Project
-
Projects
176
BZ Score
$20K
Avg Project
-
Projects
Keller Brothers Inc Reviews
BuildZoom hasn't received any reviews for Keller Brothers 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
Keller Brothers Inc License info
Verified License
| License # | 40762 |
| Status | Active |
| State | Maryland |
| Type | Home Improvement |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Keller Brothers 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 # | 410513000215 |
| Status | Active |
| City | District Of Columbia |
| Type | Gen Contr Construction Mngr |
- When BuildZoom last verified this license, it had an expiration date of February, 2025. Check the current license status of Keller Brothers Inc with the Department of Consumer and Regulatory Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 40761 |
| Status | Active |
| State | Pennsylvania |
| Type | Contractor Corp Part |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Keller Brothers 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 # | 40761 |
| Status | Active |
| State | Maryland |
| Type | Contractor (Corppart) Home Improvement |
- When BuildZoom last verified this license, it had an expiration date of February, 2017. Check the current license status of Keller Brothers Inc with the Maryland Department of Labor, Licensing & Regulation
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
38
Permits
- Building permit records show that Keller Brothers Inc has worked on 38 permitted projects.
Keller Brothers Inc Employees
KI
Keller Brothers Inc
Owner
PJ
Phillip Dennis Keller Jr
Owner