Administrative overview · FIPS 37101
Johnston County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Johnston County Building Inspections Department
For a project in or near Johnston County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct contact
919-989-5060
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Land Use Center, 309 E. Market Street, Smithfield, NC 27577
Operating hours
Monday-Friday, 8:00 a.m.-5:00 p.m.
Review expectation
Residential permit review generally requires 7-10 business days; commercial plan review generally takes 3-14 days depending on plan complexity. Inspection requests submitted by 3:00 p.m. are scheduled for the next business day.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Frequently asked questions for Johnston County
Who handles permitting for this jurisdiction?
Johnston County Building Inspections Department is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
How should I begin an application?
Begin with the online permit gateway listed in the application guide. If the portal does not recognize the address or project type, contact 919-989-5060.
How long might review take?
Residential permit review generally requires 7-10 business days; commercial plan review generally takes 3-14 days depending on plan complexity. Inspection requests submitted by 3:00 p.m. are scheduled for the next business day.
How are inspections scheduled?
Call 919-989-5060 by 3:00 p.m. to schedule an inspection for the next business day. The permit box must be approved and on site, the address must be visible from the road, and the approved inspector plan set, site plan, and orange permit card must be available. Inspections must be called within six months of permit issue or the permit expires. Status can be checked online by permit application number.
Which codes and exemptions should I review?
Johnston County requires residential plans to reference the 2018 North Carolina Residential Code and commercial plans to use the 2018 NC Building Codes. The Department links the State's current adopted codes and amendments and enforces applicable North Carolina building, electrical, mechanical, plumbing, fire, energy, and local requirements. Specific 2026 code edition: N/A. Johnston County lists cosmetic work costing no more than $40,000, same-location/no-structural-change replacement of doors and windows, replacement roof coverings, minor plumbing/electrical repairs by licensed contractors without system changes, and fences as generally not requiring permits. Accessory structures exceeding 12 feet in dimension or more than one story, all decks and porches, pools/spas holding more than 24 inches of water, HVAC change-outs, electrical repairs, structural roof changes, additions/remodels, and other listed work require permits. A homeowner may perform work on the home they occupy after signing the owner-exemption form and residing there for one year after completion; jobs under $40,000 may be performed by an unlicensed contractor, subject to trade-licensing rules.