Building permits, zoning and land rules in Howard County, Missouri

At a glance

Building permit

County requirement not confirmed; ask the County Commission before building¹⁴

Zoning

Countywide zoning not confirmed; verify the parcel's jurisdiction⁵⁶

Septic

Permit required for most installations and repairs; some residential lots may be exempt³

RV living

Howard County occupancy rule not confirmed; ask the County Commission and septic authority⁵⁷

Tiny homes

County occupancy and minimum-size rules not confirmed⁵¹

Private wells

Professional well and pump work generally requires state permits; landowners may install their own⁸

State-highway driveway

MoDOT permit required for construction or modification in state right-of-way⁹

Who to call

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

Do you need a building permit in Howard County, Missouri?

We could not confirm a countywide building-permit requirement for unincorporated Howard County from the available county information.¹ Missouri fire and building codes are adopted locally, so statewide law alone does not answer whether a particular Howard County project needs a permit.²

Start with the Howard County Commission before ordering plans or materials; its published office is at the courthouse and its listed phone is the direct county contact available for this question.⁴ Ask whether the parcel is inside a city, whether the county has adopted a code for the affected area, and whether separate floodplain, septic, driveway, electrical, or utility approvals apply. The county's building-code adoption, inspection procedure, certificate-of-occupancy rule, permit fees and owner-builder exemption remain unconfirmed, so get the answer for the parcel and proposed structure in writing before construction.¹

Who handles Howard County building permits and how do you reach them?

Howard County does not identify a dedicated building department in the available county information, and a county building-permit process could not be confirmed.¹ The practical first call is the Howard County Commission at the courthouse, which is the published county contact for questions that lack a named permitting office.⁴

The project may still involve specialized agencies. Howard County's listed floodplain contact is the county Floodplain Administrator.¹⁰ The Missouri DHSS Onsite Wastewater Treatment Program is the state-listed Howard County contact for onsite wastewater applications.¹¹ A driveway constructed or modified within MoDOT right-of-way requires a MoDOT permit, while that state rule does not establish a requirement for driveways outside state right-of-way.⁹ When you call, give the parcel address or legal description, say whether it lies inside an incorporated city, and describe every planned structure and access point so the office can route each approval correctly.

Does Howard County, Missouri have zoning?

We could not confirm countywide zoning or a Howard County zoning map for unincorporated land.⁵ Missouri law allows certain counties to establish zoning for unincorporated territory after voter approval, but that authority does not prove Howard County adopted zoning.⁶

That uncertainty matters for setbacks, minimum lot size, minimum dwelling size, building height, accessory dwellings, manufactured homes and tiny homes because no Howard County standard for those topics was confirmed.⁵ Ask the Howard County Commission whether the parcel is subject to county land-use rules, and ask the relevant city if the land is within municipal limits.⁴ Do not treat a rural mailing address as proof that a parcel is unincorporated. A Missouri farm-structure exemption applies specifically against county fire-protection or fire-prevention ordinances; it is not a blanket exemption from zoning, septic, floodplain or other land-use requirements.¹²

How do septic permits work in Howard County, Missouri?

A construction permit is required before installing or repairing most onsite wastewater systems serving Howard County, although some single-family residential lots may be exempt based on property size.³ The Missouri DHSS permit page lists DHSS as the Howard County authority and directs applicants to submit an online request for an application number.¹¹ Confirm the exemption or obtain the permit before work begins.¹³

Site conditions deserve early attention: only about 3% of Howard County soils avoid a USDA rating of severe limitations for a conventional septic drain field.¹⁴ That does not make septic impossible, but it makes a site and soil evaluation especially important before choosing a house site or closing on land. Missouri divides wastewater oversight by system type; DHSS or a local agency generally handles qualifying domestic systems, while DNR handles larger-flow, discharge and certain lagoon systems.¹⁵

Can you live in an RV or tiny home in Howard County, Missouri?

We could not confirm a Howard County rule allowing or prohibiting full-time RV occupancy, temporary camping or tiny-home occupancy on private land.⁵ We also could not confirm county minimum-home-size, setback or accessory-dwelling standards, so a small structure should not be assumed legal merely because the parcel is rural.⁵

Ask the Howard County Commission about land-use and occupancy rules for the exact parcel, and ask the relevant city if the site is incorporated.⁴ For sanitation, Missouri onsite-wastewater rules may apply where central sewer service is unavailable, and wastewater may not be discharged onto the ground or into a road ditch.⁷ The state-listed Howard County onsite wastewater contact is DHSS.¹¹ Before buying for RV or tiny-home use, describe whether the unit will be temporary or permanent, whether it has wheels, how utilities will connect, and where sewage will go; those details can change which approvals apply.

Building a home in Howard County, Missouri: what are the steps?

1. Confirm whether the parcel is unincorporated and ask the Howard County Commission whether a building permit, adopted code, inspection or occupancy approval applies.¹⁴
2. Ask the same office whether county zoning, setbacks, subdivision rules or a floodplain review affect the proposed house site.⁵¹⁰
3. Contact the Missouri DHSS Onsite Wastewater Treatment Program before septic work; most installations or repairs require a construction permit, though an exemption may apply.³¹¹
4. Arrange the site and soil evaluation early because about 3% of county soils avoid severe conventional-drain-field limitations.¹⁴
5. Use a properly permitted well professional for private well or pump work unless the landowner performs an installation covered by the landowner exception.⁸
6. Apply to MoDOT if the driveway will be built or modified within state right-of-way.⁹

What should you check before buying land in Howard County?

Start with wastewater feasibility, access and flood exposure rather than assuming a buildable-looking field is ready for a house. About 3% of Howard County soils avoid severe conventional septic limitations, while about 85.1% of the county has slopes of 15% or less.¹⁴¹⁶ The gentler terrain can help with siting, but it does not replace a soil evaluation.

Ask the Floodplain Administrator about the parcel and proposed building area because some participating Missouri jurisdictions restrict projects in designated flood-hazard areas.¹⁷¹⁰ Verify whether road access meets county requirements, and remember that MoDOT requires a permit for driveway work in state right-of-way.⁹ Confirm the water plan as well: professional construction or repair of a private well generally requires a Missouri permit, with a landowner exception for self-installation.⁸ Howard County's effective property-tax rate is about 0.9%, and the median annual property-tax bill is about $1,262.¹⁸¹⁹

Watch-outs

• Do not assume that an unincorporated Howard County parcel is permit-free; the county building-permit requirement and inspection process remain unconfirmed, so ask the County Commission before work starts.¹⁴
• Septic feasibility is a major due-diligence item because about 3% of Howard County soils avoid severe conventional-drain-field limitations.¹⁴
• A MoDOT permit applies when a driveway is built or modified within state right-of-way, even though the county driveway rule remains unconfirmed.⁹

Sources

1. (2026 county census)
2. RSMo Section 64.170 (Missouri statewide rule), quoted and re-checked
3. Resources, quoted and re-checked
4. Howard County Commission (mocounties.com)
5. (2026 county census)
6. RSMo § 64.090 — Planning and zoning powers of county commission (Missouri statewide rule), quoted and re-checked
7. Frequently Asked Questions (Missouri statewide rule), quoted and re-checked
8. Water Wells - PUB2945, quoted and re-checked
9. Permits | Missouri Department of Transportation (Missouri statewide rule), quoted and re-checked
10. Howard County Floodplain Administrator (sema.dps.mo.gov)
11. Missouri DHSS Onsite Wastewater Treatment Program (health.mo.gov)
12. RSMo Section 64.003 — Farm buildings and farm structures (Missouri statewide rule), quoted and re-checked
13. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
14. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
15. On-site Septic Systems and Subdivisions (Missouri statewide rule), quoted and re-checked
16. Share of land at 15% slope or less: Bolthole Index county data
17. Laws and Regulations That Might Affect You if You Mine Sand or Gravel From Missouri Streams (Missouri statewide rule), quoted and re-checked
18. Effective property tax rate: Bolthole Index county data
19. Median property tax bill: Bolthole Index county data

Written September 28, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.