Updated: Dec 25, 2025
Location and Projects
Address
704 W Mayne St, Blue Grass, IA, 52726
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Cornerstone Construction Group Electrician
Cornerstone Construction Group LLC at 704 W Mayne St, Blue Grass, IA 52726, held a Electrician license (#C087057) with the Iowa contractors license board with an expiration date of 10-29-2025. We last verified the license was expired on 12-24-2025.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 39,764 Iowa contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Cornerstone Construction Group LLC Contact Information
Address: 704 W Mayne St, Blue Grass, IA 52726
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Cornerstone Construction Group LLC Blue Grass
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Cornerstone Construction Group LLC, click “This is My Business” to update your information.
Activity
|
1 project
|
2025 |
|
1 project
|
2023 |
Our building permit records indicate that Cornerstone Construction Group LLC has worked on at least
2.0 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.
Pricing
|
1 project
|
$20k-$50k |
|
1 project
|
$100k-$250k |
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 Cornerstone Construction Group LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Construct a 24x30 detached garage on previously permitted thickened edge slab. 2x4x10 studs 16 on center supporting engineered trusses. full wood structural panel on either side of double garage door. garage is 30 deep. buildings less than 4 feet from property line must have fire wall installed from floor to underside of roof sheathing. electrical ground must be installed at time of f... see more
Valuation:
$34,000
Permit #:
23-31535
Status:
issued
Fee:
$319
Permit Type:
New garage
Building Type:
Single family dwe...
Cover roof with 26 square of asphalt shingles. remove all layers of existing roofing material. 2 layers max. of shingles 1 layer of buildup- ice shield required by code
Valuation:
$5,300
Permit #:
20-31213
Status:
issued
Fee:
$85
Permit Type:
Reroof
Building Type:
Single family dwe...
On rear of house construct a 21x76 addition to create a master bedroom master bathroom a great room a bathroom a single level uncovered deck and garage extension. all living space separated from garage per code. beam size calculations portal frame engineering and deck ledger engineered design provided at framing inspection and portal frame sheathing inspection. pool submittal separate... see more
Valuation:
$118,300
Permit #:
25-58781
Status:
issued
Fee:
$740
Permit Type:
Addition
Building Type:
Single family dwe...
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Cornerstone Construction Group LLC Reviews
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Cornerstone Construction Group LLC License info
Inactive License
| License # | C087057 |
| Status | Inactive |
| State | Iowa |
| Type | Contractor |
| Business Type | Other |
- According to the Iowa Workforce Development Agency, 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 Cornerstone Construction Group LLC at the Iowa Workforce Development Agency.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Cornerstone Construction Group LLC, click “This is My Business” to update your information.
Cornerstone Construction Group LLC Employees
MR
Mark A Reitz
TB
Tim Baldwin
VM
Vance A Mattson
VM
Vance Mattson
Owner