Webster County, Missouri Building Permit Guide

Webster County does not issue building permits: the County Commission said in 2026 that the county has no countywide planning and zoning, and its permits page covers only licences. Septic systems are permitted by the Webster County Health Unit, 233 E. Washington St., Marshfield (417-859-2532), and a six-month county moratorium adopted on June 16, 2026 pauses new data centers and large solar, wind and battery storage projects on unincorporated land. Inside Marshfield, Rogersville, Seymour and Diggins, the town’s own building code applies.

Webster County building department: who handles permitting

The County Commission (101 S. Crittenden St., Room 11, Marshfield; 417-859-4250) runs county roads and property but no building or zoning office. Emergency Management is at 433 E. Commercial St. (417-859-7959). For floodplain questions on county land, the state emergency agency’s directory gives a Fordland address and 417-767-4321 for the county floodplain administrator, the same contact it lists for the City of Fordland.

Permit costs in Webster County

Septic (Health Unit): the Health Unit’s page lists $90 for a home permit and $120 for a commercial or business permit. The state health department suspended its onsite sewage application fees from August 28, 2026 until it sets new ones, so ask the Health Unit what it currently charges.

Marshfield: since February 26, 2026 (Ordinance 2232) fees sit in City Code Section 100.260. New buildings, additions, remodels and accessory buildings pay gross area × the square-foot construction cost × 0.00424 (the code prints the formula with a plus sign and names no cost table, so ask the Building Inspector how it is applied). Plan review is $35 for one- and two-family homes, $50 for three- and four-family buildings and 10% of the permit fee for commercial work; demolition is $100, a deck $70 and a fence or carport $35.

Rogersville: the 2026 residential application charges $0.30 per sq ft of living area, counting every story, basement and garage. On top come a $310 water meter, a $200 water connection fee, a $600 water impact fee, a $1,000 sewer impact fee, a $350 inspection and administrative fee and a $25 community betterment fee. A 2,000 sq ft house therefore pays $600 plus $2,485, or $3,085, and each re-inspection costs $25.

Seymour: the city’s 2026 building permit application charges $0.25 per sq ft for residential, commercial and accessory buildings ($25 for a remodel), plus inspection fees of $150 for a home, $250 for a commercial building and $50 for an accessory building. A 3/4-inch water tap is $900 and a sewer tap $550. The Building Inspector reviews the plans and inspects the site, footings, foundation, rough-ins, plumbing and final.

Diggins: new homes and commercial buildings pay $0.10 per sq ft under roof (basements, garages, porches and decks included) with a $100 minimum; accessory buildings and additions pay $0.10 per sq ft with a $25 minimum, decks $25 or $50 over 500 sq ft, and the village may require an infrastructure damage bond of at least $1,000.

Moratorium, septic and floodplain rules

Energy and data center moratorium: Order and Ordinance 2026-03, adopted June 16, 2026, bars building, opening or expanding data centers (2,500 sq ft or more, or 250 kilowatts or more of computing load), solar, wind and battery storage systems (other than small systems serving the property itself) in unincorporated Webster County for six months, including the issuance of related permits. It ends automatically six months from June 16, 2026 (the order sets no calendar end date) unless the Commission ends it sooner or extends it. It does not apply to projects already operating or past site grading when it was adopted, and the county has said it will not use it to stop the data center under construction on Rifle Range Road.

When a septic permit is needed: the Health Unit requires one for any new or repaired system serving a business, whatever the acreage; for a single home on a lot of 2.99 acres or less; and for two or more homes on 9.99 acres or less. A soil report must come with the application, and state-registered installers sign up with the Health Unit for $25 a year to install systems in the county. Under RSMo 701.031, a house lot of at least 3 acres falls outside the state rules only if the whole system sits more than 10 feet inside the lot lines and its effluent stays on the property without polluting water or creating a nuisance.

Floodplain: Webster County, Marshfield, Rogersville and Seymour take part in the National Flood Insurance Program; Diggins, Fordland and Niangua participate with no mapped flood hazard areas.

Starting a project in Webster County

Missouri building code

Missouri has no mandatory statewide building code for private construction: a county, fire protection district or municipality may adopt one (usually by reference under RSMo 67.280), and in parts of the state none has. Building codes in Missouri

Webster County permit FAQs

Does Webster County, Missouri require a building permit?

No county building permit exists: the county has no countywide planning and zoning. Septic systems still need a Health Unit permit in the cases its rules list, and towns such as Marshfield and Rogersville require their own permits.

Who issues septic permits in Webster County?

The Webster County Health Unit, 233 E. Washington St., Marshfield (417-859-2532), open Monday to Friday, 7:30 a.m. to 4:30 p.m.

Does a house on 3 acres need a septic permit?

The Health Unit requires a permit for a single home only on lots of 2.99 acres or less, though it still recommends a soil report on larger lots. Systems serving a business always need one.

Can I build a data center or solar farm in rural Webster County?

Not while the six-month moratorium adopted on June 16, 2026 is in force, unless the project was already operating or past site grading when it was adopted.

How much is a building permit in Marshfield?

The fee formula is gross area times the square-foot construction cost times 0.00424 (the code prints it with a plus sign), plus a $35 plan review fee for a one- or two-family home.

Webster County permit search and official resources

• Webster County Commission
• Webster County moratorium statement (June 16, 2026)
• Webster County Order and Ordinance 2026-03 (moratorium text)
• Webster County Health Unit onsite wastewater permits
• Missouri DHSS septic (OWTS) permit authority by county
• SEMA floodplain and emergency contacts, Webster County
• FEMA Community Status Book: Missouri
• City of Marshfield Building Department
• City of Marshfield code, including the fee schedule
• City of Rogersville Building Department
• City of Rogersville residential building application (2026)
• City of Seymour code of ordinances
• Village of Diggins permits and fee schedule

Simplify Webster County permitting with Alliance Permitting

Alliance Permitting is a permit documentation and submission company in Missouri. We prepare your paperwork, file it correctly and coordinate with the permitting authority through issuance. We are not a contractor and we do not perform licensed plan review or inspections; that work stays with your licensed team and the jurisdiction.

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