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Mingo County, West Virginia Building Permit Guide

In Mingo County the county’s floodplain manager handles floodplain permits for the whole county, Williamson and the other four towns included, and the Mingo County Health Department permits septic systems and wells.

Authority: Mingo County floodplain managerCovers: County and all five townsPhone: 304-235-0566
Floodplain permits
Mingo CountyAlso serves all five towns
Floodplain phone
304-235-0566State floodplain manager list
Septic permit
$185Conventional system, Health Department
2025 population
21,455Census annual estimate

Building on flood-prone land anywhere in Mingo County, Williamson, Delbarton, Gilbert, Kermit and Matewan included, starts with a floodplain development permit from the county floodplain manager (304-235-0566), and the Mingo County Health Department permits septic systems and wells, $185 for a conventional septic system. The county publishes no building code or county building permit; Gilbert has adopted the State Building Code in its town code.

What requires a permit in Mingo County?

The state’s list of local floodplain managers names the Mingo County floodplain manager for the unincorporated county and, under county-support agreements, for all five municipalities. Building, placing a manufactured home or filling land in a mapped flood zone therefore goes through that one county office before work starts.

County-level permits

  • Floodplain development permit: county floodplain manager
  • New, altered or repaired septic system: Health Department construction permit
  • New, modified or abandoned water well: Health Department construction permit, applied for by a certified driller
  • Subdivision lots without public sewer: Health Department review, $100 for 1–10 lots

Inside a town

  • Gilbert: the town code adopts the State Building Code for all structures erected or removed in town
  • Williamson, Delbarton, Kermit and Matewan: town hall for any local building or business requirement
  • All five towns: floodplain permits still through the county floodplain manager

Who handles permitting in Mingo County?

The Mingo County Commission meets in the courthouse at 75 East 2nd Avenue, Williamson, and takes county business calls at 304-235-0380. Floodplain permits go to the county floodplain manager.

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Mingo County permitting contacts
DetailInformation
Floodplain permits (county and towns)Mingo County floodplain manager, 304-235-0566
County Commission75 East 2nd Avenue, Williamson, WV 25661; 304-235-0380
Septic systems and wellsMingo County Health Department, 101 Logan Street, Suite 201, Williamson; 304-235-3570

Town halls, as listed by the Mingo County Redevelopment Authority:

  • Williamson (county seat): City Hall, 107 East 4th Avenue, 304-235-1510
  • Gilbert: Town Hall, 5 Wharncliffe Avenue, 304-664-9625; the town code adopts the State Building Code, and its 2012 floodplain chapter requires a floodplain development permit and site plan for any development in town, with a flat floodplain determination fee and an added fee based on the construction value in the flood hazard area
  • Delbarton: 1 Riverside Drive, 304-475-3359
  • Kermit: 101 Main Street, 304-393-3563
  • Matewan: 304-426-4092

For Williamson, Delbarton, Kermit and Matewan the published sources do not say whether the town issues building permits; ask town hall before work starts.

Mingo County permit types

Floodplain development permit. Issued by the county floodplain manager for sites in the unincorporated county and in all five towns. Have the parcel’s flood zone from the West Virginia Flood Tool ready when you call.

Septic construction permit. A certified installer runs the percolation test and site evaluation and files the application with the owner. A Health Department sanitarian visits the site with the installer, and the construction permit follows the sanitarian’s approval. Changes found during installation must be cleared with the department first.

Water well permit. A certified well driller applies; the sanitarian checks the distance from the septic system and buildings before the construction permit is issued.

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Home loan evaluation. Lenders often want an existing septic system and well checked before a sale; the Health Department does this on application.

Permit costs and fees in Mingo County

The county floodplain manager (304-235-0566) quotes any floodplain permit fee. The Mingo County Board of Health’s posted fee schedule (FY2022) sets these environmental permit fees:

Mingo County Health Department permit fees (FY2022 schedule)
PermitFee
Conventional sewage system$185
Alternative sewage system$375
Home aeration unit$375
Sewage system re-inspection$50
Water well$125
Subdivision review, 1–10 lots$100
Subdivision review, 11 lots or more$12 per lot

Electrical, plumbing and mechanical work

Mingo County publishes no electrical, plumbing or mechanical permit. In Gilbert, the town code makes the State Building Code, including its plumbing and mechanical parts, the standard for construction in town, so ask Gilbert Town Hall which permits and inspections it requires. Plumbing that connects to a septic system or well is part of the Health Department’s permit and final inspection.

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What to have ready

Floodplain permit

  • Site address and tax map and parcel number
  • Flood zone from the West Virginia Flood Tool
  • Description and size of the building or fill
  • Elevation data from a surveyor where the site is in a mapped flood zone

Septic permit

  • Name of the certified installer
  • Percolation test and site evaluation by the installer
  • On-site sewage system application signed by the owner or installer
  • Planned house size and location so the sanitarian can check the layout

How to apply: 5-step Mingo County process

1. Find the flood zone

Look up the parcel on the West Virginia Flood Tool, which also shows whether it lies in Williamson or another town.

2. Call the floodplain manager

Phone 304-235-0566 to describe the project and get the floodplain permit application, wherever in the county the site is.

3. Check with the town

Inside a town, call town hall; in Gilbert, ask how the State Building Code is applied to your project.

4. Line up septic and water

Hire a certified installer or driller, who files with the Health Department at 101 Logan Street, Williamson.

5. Build and close out

Call the Health Department before a septic system is covered, and keep the floodplain permit and any elevation certificate for the property file.

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Mingo County inspections

The Health Department inspects every new or repaired septic system before it is covered, comparing it with the approved plan; a repeat visit costs $50. A well driller files a completion report with the department within 30 days of finishing.

Local Mingo County details that matter

One floodplain office for the county: because the five towns rely on the county for floodplain management, a builder in Williamson deals with the same floodplain manager as one in the rural county.

Home sales: for a Health Department home loan evaluation, the house must have been lived in for the last 30 days and the septic tank not pumped in that time.

West Virginia building code

West Virginia lets each county and city adopt the State Building Code or no building code at all; no other building code may be adopted, and floodplain, sewage and fire rules can apply either way. West Virginia rules

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Official Mingo County permitting resources

Mingo County permit FAQs

Do I need a building permit in Mingo County?

The county does not publish a building permit. A floodplain permit is needed for development in a flood zone, and a septic system or well needs a Health Department permit. In Gilbert, the town has adopted the State Building Code.

Who issues floodplain permits in Williamson?

The Mingo County floodplain manager (304-235-0566), who serves Williamson, Delbarton, Gilbert, Kermit and Matewan under agreements with the county.

How much is a septic permit in Mingo County?

$185 for a conventional system and $375 for an alternative system or home aeration unit, under the Board of Health’s posted schedule.

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Who installs and permits a septic system?

A certified installer tests the site and applies; the Mingo County Health Department issues the construction permit and inspects the system before it is covered.

How do I reach the Mingo County Commission?

Call 304-235-0380 or visit the courthouse at 75 East 2nd Avenue, Williamson.

Is there a fee for a Mingo County floodplain permit?

The county floodplain manager (304-235-0566) gives the fee, if any, when you apply. Inside Gilbert, the town’s floodplain chapter charges a flat floodplain determination fee on all proposed development.

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This guide is provided by Alliance Permitting for general information about Mingo County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.