Land that looks usable can still need zoning confirmation, septic approval, water planning, driveway access, grading, power coordination, setbacks, and restriction checks before a manufactured home can be occupied.
Short answer: North Carolina does not have one statewide acreage number that makes a parcel ready for a single wide, double wide, or other manufactured home. The usable part of the parcel must fit the exact home, setbacks, septic or sewer, water, driveway and delivery access, utilities, site work, restrictions, permits, and inspections. Local rules and property conditions control the answer, so total acreage and nearby homes are only starting facts.
Reviewed by a manufactured home setup contractor and dealer.