Zoning at Town Hall first, building permit from the county second
Erwin splits the paperwork. The Town's Planning & Zoning office issues the zoning permit, and under an interlocal agreement Harnett County's inspection department handles building inspections for the town. The agreement says no building permit gets issued for construction, repair or improvement to any land or structure in Erwin until the Town has issued a zoning permit or comparable approval.
The Town's zoning form asks for a plot or site plan showing the lot shape, buildings, parking, access drives and yard distances. It also asks the estimated cost, whether the property touches a DOT road, and whether it sits in a floodplain, watershed or wetland. Town staff fill in the setbacks. Read the Town's planning page and call before you sign, because Harnett's download list has a storage building and deck packet but no flatwork packet. Our permits guide covers the rest.
Flat ground and wet soil: the drainage problem the Town wrote down
The Town's 2023 Land Use Plan says drainage and stormwater is an issue in many areas where the topography is relatively flat and wet soils occur. The Cape Fear River runs on the west side of town and the Black River drains the east side. That matters for a patterned slab. On flat ground the fall has to be built into the pour with forms and string lines. It won't come from the lot.
USDA soil data at 40 random points inside Erwin's boundary found Norfolk loamy sand at 15, Marlboro sandy loam at four, and Wahee, Exum and Bibb loam at three each. Norfolk drains well. Exum is moderately well drained, Wahee is somewhat poorly drained, and Bibb is mapped as frequently flooded. So two lots a few streets apart can need different bases. We probe at the spot, and when the soil stays wet we deepen the stone and firm the edge before the pattern goes down. The Web Soil Survey shows your map unit.
A stamped surface costs $12 to $20 per sq ft once color and sealer are counted. Wet-soil base work gets a line of its own.
| Project | Size | Per sq ft | What it comes to |
|---|---|---|---|
| Porch landing | 6x8 (48 sq ft) | $12 to $20 | $576 to $960 |
| Seating patio | 12x16 (192 sq ft) | $12 to $20 | $2,304 to $3,840 |
| Patio with border | 18x18 (324 sq ft) | $12 to $20 | $3,888 to $6,480 |
| Patio and walk together | 450 sq ft | $12 to $20 | $5,400 to $9,000 |
Soft ground, a flood-mapped lot or a pad on flat land changes the cost under the surface. You get all of it on a free written estimate after we see the site.




