Updated: Jun 11, 2026
Location and Projects
Address
121 SARRATT SCHOOL RD, Gaffney, SC, 29341
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Keystone Constructors HVAC/Mechanical Contractor
Founded in 2002 and based in Gaffney, South Carolina, Keystone Constructors, Inc. specializes in mechanical and electrical system construction, upgrades, and maintenance for industrial clients. The company serves a range of industries, including chemical, manufacturing, automotive, food, textile, power generation, pharmaceutical, and educational sectors requiring specialized process applications. Keystone Constructors operates throughout the southeastern United States, managing projects that involve process mechanical and electrical installations for facilities with heavy mechanical processes. Their team draws on decades of collective experience to handle complex industrial construction needs, delivering cost-efficient solutions tailored to operational requirements. Keystone holds multiple licenses in South Carolina, North Carolina, Georgia, Louisiana, Tennessee, and Virginia, supporting its regional project reach.
Keystone Constructors, Inc Contact Information
Phone Number: (864) 488-2277
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Address: 121 SARRATT SCHOOL RD, GAFFNEY, SC 29341
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Keystone Constructors, Inc GAFFNEY
Quality
99
85th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Keystone Constructors, Inc has a BuildZoom score of 99, which places them above 85% of 79,084 contractors in South Carolina.
Activity
|
1 project
|
2025 |
|
1 project
|
2024 |
|
3 projects
|
2023 |
Our building permit records indicate that Keystone Constructors, Inc has worked on at least
5.0 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
|
Home Additions |
|
4 projects
|
Mechanical projects |
|
3 projects
|
HVAC projects |
Analyzing permits over the last 4 years shows that Keystone Constructors, Inc mostly works on
mechanical project
and hvac project
projects.
Pricing
|
1 project
|
$5k-$20k |
|
1 project
|
$50k-$100k |
|
2 projects
|
$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.
Building Permits by Keystone Constructors, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Bmw hall 52 xnf expansion - zone 5 expansion of bmw main manufacture facility to allow for the production of expanded services & increased productivity
Valuation:
$628,650
Permit #:
BCMECHANIC-0423-0437
Status:
complete
Fee:
$2,187
Permit Type:
N/A
Building Type:
N/A
Bmw hall 52 xnf expansion - zone 4 expansion of bmw main manufacture facility to allow for the production of expanded services & increased productivity
Valuation:
$2,907,500
Permit #:
BCMECHANIC-0423-0436
Status:
complete
Fee:
$9,024
Permit Type:
N/A
Building Type:
N/A
Bmw hall 52 xnf expansion - zone 3 expansion of bmw main manufacture facility to allow for the production of expanded services & increased productivity
Valuation:
$6,050,750
Permit #:
BCMECHANIC-0423-0435
Status:
complete
Fee:
$18,453
Permit Type:
N/A
Building Type:
N/A
Bmw hall 52 xnf expansion - zone 2 expansion of bmw main manufacture facility to allow for the production of expanded services & increased productivity
Valuation:
$4,636,285
Permit #:
BCMECHANIC-0423-0434
Status:
expired
Fee:
$14,211
Permit Type:
N/A
Building Type:
N/A
Bmw hall 52 xnf expansion - zone 1 expansion of bmw main manufacture facility to allow for the production of expanded services & increased productivity
Valuation:
$5,264,930
Permit #:
BCMECHANIC-0423-0433
Status:
expired
Fee:
$16,095
Permit Type:
N/A
Building Type:
N/A
Hall 31 mechanical
Valuation:
$2,149,360
Permit #:
BCMECHANIC-0125-0930
Status:
issued
Fee:
$6,750
Permit Type:
N/A
Building Type:
N/A
Mechanical work for the new addition install building hvac and associated process piping (cooling water and compressed air)
Valuation:
$11,576,000
Permit #:
BCMECHANIC-0422-0100
Status:
complete
Fee:
$30,885
Permit Type:
N/A
Building Type:
N/A
Hvac & plumbing for new asrs and warehouse addition
Valuation:
$548,800
Permit #:
BCMECHANIC-1123-0610
Status:
expired
Fee:
$1,947
Permit Type:
N/A
Building Type:
N/A
Bmw hall 30
Valuation:
$75,000
Permit #:
BCMECHANIC-0125-0929
Status:
issued
Fee:
$557
Permit Type:
N/A
Building Type:
N/A
Fabrication and installation of gas piping to new hvac unit on roof addition of 560 sf fan mechanical equipment room
Valuation:
$14,606
Permit #:
BCMECHANIC-0523-0454
Status:
expired
Fee:
$182
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
$853,818
Permit #:
18-06334
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$896,460
Permit #:
18-06331
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$818,830
Permit #:
18-06319
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$116,787
Permit #:
18-06322
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$412,185
Permit #:
17-08618
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Pl - plumbing
No Description Available
Valuation:
$990,190
Permit #:
20-05261
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
437 - commerical ...
No Description Available
Valuation:
$547,233
Permit #:
17-08648
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$356,281
Permit #:
17-08640
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$1,026,235
Permit #:
17-08634
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
No Description Available
Valuation:
$1,974,150
Permit #:
17-08617
Status:
applied
Fee:
N/A
Permit Type:
N/A
Building Type:
Me - mechanical
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Verified License
BuildZoom confirmed this contractor's license
Keystone Constructors, Inc License info
Verified License
| License # | 82272 |
| Status | Active |
| State | North Carolina |
| Type | Building |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Keystone Constructors, Inc at the North Carolina Licensing Board for General Contractors.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CLG106934 |
| Status | Active |
| State | South Carolina |
| Type | General Contractor Bd5 - Building (Bd, Lb, Ub) With A Project $Unlimited |
- When BuildZoom last verified this license, it had an expiration date of October, 2016. Check the current license status of Keystone Constructors, Inc with the South Carolina Contractor's Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CLM105389 |
| Status | Active |
| State | South Carolina |
| Type | Mechanical Contractor Ac5 - Air Conditioning With A Project $Unlimited El5 - Electrical With A Project $Unlimited Pb5 - Plumbing With A Project $Unlimited 1 P5 - Process Piping With A Project $Unlimited 2 P5 - Process Piping With A Project $Unlimited |
- When BuildZoom last verified this license, it had an expiration date of October, 2016. Check the current license status of Keystone Constructors, Inc with the South Carolina Contractor's Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 50302 |
| Status | Active |
| State | Tennessee |
| Type | Contractors |
- When BuildZoom last verified this license, it had an expiration date of March, 2015. Check the current license status of Keystone Constructors, Inc with the Tennessee Department of Commerce and Insurance
This is a sample of licensing data; click here to access a complete history.
Unverified License
| License # | 55105 |
| Status | Unable To Verify |
| State | Louisiana |
| Type | Mechanical |
| Class | Commercial License Certificate |
- 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.
99
BuildZoom Score
13
Permits
- Building permit records show that Keystone Constructors, Inc has worked on 13 permitted projects.
Keystone Constructors, Inc Employees
EW
Everett C. Webb
JP
James Penn
Owner
JV
Joseph Lee Vance
TM
Tracy William Moore