Under G.S. 143-131, if the estimated cost is between $30,000 and $500,000, municipal leaders in North Carolina can use informal bidding (obtaining at least three competitive quotes). If the cost exceeds $500,000, G.S. 143-129 mandates a formal sealed bid process with a public opening and legal advertisement.

This law applies to 'Major Facility Renovations' which is defined as projects where the cost exceeds 50% of the building's insurance value and the area is over 20,000 square feet. If triggered, we must ensure the new system achieves a 20% reduction in energy consumption compared to the ASHRAE 90.1-2004 standard.

Under North Carolina's strict laws for sustainable energy-efficient buildings, commissioning is required for 'Major Facility Renovations'.

'Major Facility Renovations' which is defined as projects where the cost exceeds 50% of the building's insurance value and the area is over 20,000 square feet.

For smaller, less complex municipal repairs, Designer-Led Commissioning is often sufficient to verify that the system operates according to the original design intent.

In the context of North Carolina public construction and specifically G.S. 143-128, the difference comes down to who oversees the coordination and how many contracts the school board (the owner) must sign. While many states allow "Single-Prime" as the default, North Carolina has historically favored "Separate-Prime" (also known as multi-Prime) to ensure specialized trades like HVAC and Plumbing have a direct seat at the table.

In a Single-Prime setup, the owner hires one General Contractor (GC). That GC is then responsible for hiring and managing all the "subs"—the mechanical, electrical, and plumbing (MEP) firms.

Separate-Prime contracting is the more traditional process and means the owner signs separate, direct contracts with each of the major trades.