Administrative overview · FIPS 54055
Mercer 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
Mercer County Office of Floodplain Management
For a project in or near Mercer 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
304-487-8448
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Mercer County Courthouse, 1501 West Main Street, Princeton, WV 24740
Operating hours
Monday-Friday, 8:30 a.m.-4:30 p.m.
Review expectation
Ask the agency for its current review estimate
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 Mercer County
Who handles permitting for this jurisdiction?
Mercer County Office of Floodplain Management 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?
No verified online portal was located in the reviewed public materials. Contact 304-487-8448 and request the current application route before preparing a final submittal.
How long might review take?
A typical review timeline was not verified. Ask the agency for its current completeness and review estimate.
How are inspections scheduled?
Call the Office of Floodplain Management at 304-487-8448. The Floodplain Administrator may inspect during construction and requires work to match the application and applicable laws; satisfactory completion and any required finished-construction elevation certificate, floodproofing certificate, hydraulic data, or encroachment analysis support issuance of the certificate of compliance.
Which codes and exemptions should I review?
Mercer County Floodplain Ordinance and applicable state requirements for development and construction in flood-hazard areas; the county does not publish adoption of a general structural building-code suite. No general minor- or cosmetic-work exemption is published. The ordinance broadly requires a county development permit and site plan for development, new construction, substantial improvements, repair of substantial damage, and placement or relocation of structures, including manufactured homes; development includes grading, filling, paving, excavation, drilling, mining, dredging, and storage of equipment or materials.