Stackhouse Management
Durham, NC
State licensed · Active
- License
- 6504
- Type
- Onsite Wastewater Installer Grade Level II
- Expires
- December 31, 2026
- Registered operator
- Gregory Marcus Applekamp (6504)
Source: North Carolina Onsite Wastewater Contractors and Inspectors Certification Board · register last read August 20, 2026
About Stackhouse Management
Stackhouse Management holds North Carolina onsite wastewater certification in Durham, North Carolina (Durham County). North Carolina certifies individual installers rather than firms; certification 6504 is held by Gregory Marcus Applekamp. Since SB 166 took effect on 1 January 2025, installer credentials are consolidated into Grade Level II and Grade Level IV, with Grade Level IV covering more complex systems.
Licensed to Perform
Work authorized by this license, per the North Carolina Onsite Wastewater Contractors and Inspectors Certification Board. This reflects the license's scope, not a list of services the business advertises.
What this Onsite Wastewater Installer Grade Level II covers
NCOWCICB certifies the people who install and inspect onsite wastewater systems in North Carolina. Certification is graded by the complexity of system a holder may install, and continuing education is required in each calendar year — three hours at Grade Level II, six at Grade Level IV and six for a Point of Sale Inspector. The grade structure changed on 1 January 2025: existing Grade I holders moved to Grade II and Grade III holders to Grade IV, leaving only those two installer grades. The Board does not regulate pumping. A septage pumping business needs a separate permit from NC DEQ.
Grade Level II covers most ordinary residential work: conventional gravity systems, multiple tanks, grease traps, single pump or single siphon systems, fill systems, sand-lined trenches, and any approved gravity or single-pump dispersal system up to 1,499 gallons per day. It is the grade most certificate holders carry.
Checking it yourself: NCOWCICB publishes its certification list. Check that the grade covers the system you are having installed, not just that a certification exists.
Based on NCOWCICB certification guidance and FAQ; SB 166 (eff. 2025-01-01).
Service Area
Stackhouse Management serves Durham, NC and surrounding areas. The license is registered in Durham County.
Other licensed contractors in Durham County
Each holds a current license from the same authority.
Contact Information
- Phone
- (919) 820-2438
- Address
- Durham, NC
- County
- Durham
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