Skip to content
Septic Registry

Cornerstone Contracting LLC

InstallerColumbus · Polk County, North Carolina

Call (828) 989-0845

The state record

Name as listed
CORNERSTONE CONTRACTING LLC
Phone as listed
(828) 989-0845
Licence number
11857
Licence class
Grade Level IV
City
Columbus
County of record
Polk County
Licensed since
December 2, 2024
Record published
August 21, 2026
Licensing agency
North Carolina Onsite Wastewater Contractor and Inspector Certification Board

What this licence covers

Certified to install any onsite wastewater system
The highest grade held by anyone at Cornerstone Contracting LLC is Grade Level IV, which permits them to install any onsite wastewater system: conventional gravity systems, and also dual pumps or siphons, low-pressure and drip dispersal, groundwater lowering, pretreatment and reuse systems, and systems with no daily flow limit.
2 certified people on the board's list
North Carolina certifies the installer personally rather than the firm, so a company's capability is the sum of its certified staff. Cornerstone Contracting LLC has 2.

What this listing does and does not tell you

Cornerstone Contracting LLC appears on North Carolina’s septic licensing records as a certified septic installer, as published August 21, 2026. That is a statement by NC OWCICB that the licence was held when the record was compiled.

The record puts the first certification at December 2, 2024 — 2 years ago. Longevity is not a measure of quality, but it is a fact the state publishes and it is hard to fake.

It is not a rating, a review, an endorsement or a guarantee of insurance, price or workmanship — and licences lapse. Nothing on this page comes from the company itself, and no company pays to be here.

To confirm the licence is current today, check with the certification board, or your county environmental health office. Step by step →

Questions about Cornerstone Contracting LLC

Is Cornerstone Contracting LLC licensed for septic work in North Carolina?
Cornerstone Contracting LLC appears on NC OWCICB's records under Grade Level IV 11857, as published August 21, 2026, filed under Polk County. Licences can lapse between publications, so confirm it is current before hiring.
What is Cornerstone Contracting LLC licensed to do?
The highest grade held by anyone at Cornerstone Contracting LLC is Grade Level IV, which permits them to install any onsite wastewater system: conventional gravity systems, and also dual pumps or siphons, low-pressure and drip dispersal, groundwater lowering, pretreatment and reuse systems, and systems with no daily flow limit. North Carolina certifies the installer personally rather than the firm, so a company's capability is the sum of its certified staff. Cornerstone Contracting LLC has 2.
How do I verify Cornerstone Contracting LLC's licence myself?
Check with the certification board, or your county environmental health office, quoting 11857. Nothing on this page comes from the company, and we do not verify anyone ourselves — we republish the state record and name it.
Who else is licensed near Cornerstone Contracting LLC?
Polk County has 33 licensed septic businesses on the same record. Worth knowing when the first company you call cannot come out for a fortnight.

Other licensed companies in Polk County

All 33 in Polk County →