Bolthole Index

Crittenden County, Kentucky

Building permits, zoning and septic rules in Marion, Kentucky

Marion, Kentucky has adopted building codes covering construction and remodeling of single-family homes, but we could not confirm the city’s residential building-permit requirement; ask City Code Enforcement/Planning & Zoning before starting work.12 Marion’s Planning & Development Commission administers city zoning in Crittenden County, while onsite sewage approvals go through the local health department.345

At a glance

Home building permits
City requirement unconfirmed; ask Code Enforcement/Planning & Zoning12
Zoning
City zoning administered by the Planning & Development Commission3
Septic permits
Local health department; site evaluation before approval46
RV and tiny-home living
Unconfirmed; ask the city about the proposed use and zoning district2
Owner plumbing work
Homeowner permit and affidavit required before work; owner must perform the work7
Private wells
Kentucky requires a certified driller; no state owner permit application or fee8

Who to call

Planning & zoning

City of Marion Code Enforcement/Planning & Zoning

City contact for zoning, building-code questions and confirmation of the responsible building official

(270) 965-2266

217 S Main Street Marion, KY 42064

Septic permits

Crittenden County Health Department — Pennyrile District Health Department

Onsite sewage site evaluations, septic installation permits and inspections

(270) 965-5215

190 Industrial Drive \ P.O. Box 392 Marion, KY 42064

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

Going off-grid in Marion means bringing your own water and power. The kit we’d start with:

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Does Marion have zoning, and what does it mean for RVs and tiny homes?

Marion’s Planning & Development Commission administers the city’s zoning regulations and land-use provisions of its Code of Ordinances.3 Marion provides applications for zoning and sign permits, conditional uses, dimensional variances and zoning map amendments.9 The city’s online zoning map is informational, is subject to amendment and is not intended for legal use; request updated zoning information from the city before relying on a parcel’s apparent district.9

We could not confirm Marion’s rules for residential RV occupancy, temporary camping, tiny homes, manufactured homes or accessory dwellings, or its district-specific lot sizes, setbacks and minimum dwelling sizes; ask City Code Enforcement/Planning & Zoning to review the proposed use and site plan.2

Do you need a building permit in Marion, KY, and who issues it?

Marion has adopted building codes that extend to single-family dwellings constructed or remodeled inside city limits.1 Kentucky’s residential code does not require single-family building permits, inspections or certificates of occupancy unless a local ordinance requires them; that state exception does not establish Marion’s local answer.101112

We could not confirm Marion’s home building-permit requirement, inspection schedule, certificate-of-occupancy requirement or building-permit fees; start with City Code Enforcement/Planning & Zoning at (270) 965-2266 and request the responsible building official and application requirements for the specific project.2 The county’s listed building inspector expressly excludes the City of Marion, so the county inspection contact is not the correct starting point for a home inside city limits.13

How do septic permits work inside Marion?

Onsite sewage systems inside Marion fall under the local health department’s program, beginning with a site and soil evaluation.4 Pennyrile District Health Department serves Crittenden County; its Crittenden County Health Department contact is (270) 965-5215.514 For a Marion property that will not connect to a sewage system, arrange the health department’s site evaluation before facility construction.15

A septic installation permit may be issued after the property is found suitable; certified installers must bring a drawing with grade shots to the environmentalist’s office before permit issuance, and a final inspection follows installation.6 A homeowner installing a septic system personally must obtain a homeowner’s permit through the local health department.6 We could not confirm when Marion requires public sewer connection; ask the city about sewer availability and connection obligations before choosing septic.2

Building a home in Marion: what are the steps, in order?

Start with the city’s zoning answer, then resolve wastewater and the project’s building requirements before work begins.916

  1. Ask Marion for updated parcel zoning and identify whether the project needs a zoning permit, conditional use, dimensional variance or zoning map amendment.9
  2. Ask City Code Enforcement/Planning & Zoning to identify the responsible building official and confirm the home building-permit, inspection and occupancy requirements.2
  3. Ask the city about public sewer connection; if the project will use septic, arrange the health department’s site evaluation and obtain the septic construction permit before system construction.216
  4. If personally doing plumbing in a home occupied by you or built for your personal residential use, apply before work, file the homeowner affidavit and comply with the state plumbing code; the owner must personally perform the work.7
  5. Obtain a state floodplain permit before construction, demolition or renovation within a floodplain, and ask the city whether additional local floodplain approval applies.17

What stays with Crittenden County, and what should you check before buying in Marion?

City zoning does not replace the local health department’s onsite sewage approvals: Marion’s land-use review and the health department’s septic evaluation address different parts of a home project.34 For a property outside Marion city limits, consult the Crittenden County guide; the county’s listed building-inspection jurisdiction excludes Marion.13

For a proposed private well in Marion, Kentucky requires a certified water well driller and does not require a state well-construction or abandonment permit application or fee from the property owner; ask the city separately about local water-service obligations.82 A new or additional single-family driveway approach on Kentucky Department of Highways right-of-way requires written application to the District Engineer.18 State floodplain permitting can also apply to stream crossings, fill, excavation and grading, so review access work as well as the house location before committing to a site plan.19

Watch-outs

  • Marion’s online zoning map is informational and not intended for legal use; request updated zoning information from the city.9
  • We could not confirm Marion’s RV, tiny-home or mandatory sewer-connection rules; ask City Code Enforcement/Planning & Zoning before buying for those uses.2
  • A state floodplain permit is required before construction, demolition or renovation within a Marion floodplain; separate local approval may also apply.17

Sources

  1. § 150.01 Adoption of Various Codes by Reference (Marion), quoted and re-checked
  2. City of Marion Code Enforcement/Planning & Zoning (marionky.gov)
  3. Planning And Zoning - City of Marion, KY (Marion), quoted and re-checked
  4. Onsite Sewage Disposal Systems Program (Marion), quoted and re-checked
  5. Local Health Departments, quoted and re-checked
  6. Onsite Sewage Program for Pennyrile District, quoted and re-checked
  7. Department of Housing, Buildings and Construction - Plumbing FAQs (Marion), quoted and re-checked
  8. Water Well Information for Home Owners (Kentucky statewide rule), quoted and re-checked
  9. Planning And Zoning - City of Marion, KY (Marion), quoted and re-checked
  10. 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
  11. 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
  12. 815 KAR 7:125, Kentucky Residential Code (Kentucky statewide rule), quoted and re-checked
  13. Crittenden County, quoted and re-checked
  14. Crittenden County Health Department — Pennyrile District Health Department (pennyrilehealth.org)
  15. Onsite Sewage Program for Pennyrile District, quoted and re-checked
  16. Onsite Sewage Disposal Systems Program, quoted and re-checked
  17. Environmental Permitting in Kentucky (Marion), quoted and re-checked
  18. 603 KAR 1:020 Driveway approaches, entrances; construction and maintenance (Kentucky statewide rule), quoted and re-checked
  19. Understand Your Flood Hazards, quoted and re-checked

Written October 12, 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.

Answers from the rulebook for Marion

Marion’s own rules

  • Building code adoptedAdopted

    Construction and remodeling inside Marion city limits, including single-family dwellings.

    • The ordinance adopts the listed codes by reference.
    • The city states that extending the One and Two-Family Dwelling Code extends application of the Kentucky Building Code to all single-family dwellings within the city that are constructed or remodeled.
    “The Kentucky Building Code, the 1978 BOCA Basic Mechanical Code, the One and Two-Family Dwelling Code, the 1976 Supplement to the One and Two-Family Dwelling Code, and the 1978 National Electrical Code as promulgated by the Commonwealth's Board of Housing, Buildings, and Construction is hereby adopted in full as an ordinance of the city, by reference, as if set out at length herein.”
  • InspectionsLimited

    Single-family homes built inside Marion city limits, to the extent a city or county single-family inspection program exists.

    • The Kentucky state page says local county or city inspection applies if such an inspection program exists.
    • Jurisdiction responsibilities are divided between state and local inspection.
    “All single-family homes built in Kentucky will be reviewed and inspected by the local county or city building official if such an inspection program exists.”
  • Local zoningPresent

    Land inside Marion city limits; the City of Marion Planning & Development Commission administers the city's zoning regulations.

    “The Commission is authorized to govern all aspects of Title XV of the City of Marion, KY Code of Ordinances as well as the Zoning Regulations of the City of Marion.”
  • Permit processPartial

    Planning and zoning approvals inside Marion city limits.

    • The city provides applications for conditional use permits, zoning and sign permits, dimensional variances, and zoning map amendments.
    • The city warns that its online zoning map is informational and not intended for legal use; applicants should contact the city for updated zoning information.
    “Conditional Use Permit Application [...] Application for Zoning & Sign Permit [...] Dimensional Variance Application [...] Zoning Map Amendment Application”

Rules another office applies inside Marion

Marion does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Owner-builder exemptionConditional

    A homeowner inside Marion city limits seeking to perform plumbing, sewerage, or drainage work personally for a home occupied by the homeowner or constructed for the homeowner's personal residential use.

    • Application must be made before work begins.
    • The homeowner must file an affidavit.
    • All work must comply with the state plumbing code.
    • All work must be personally performed by the owner.
    • Only one homeowner permit for construction of a new home may be issued to an individual in a five-year period.
    “Permits to construct, install or alter plumbing, sewerage or drainage may be issued to homeowners who desire to install plumbing in homes actually occupied by them or in a home to be constructed by them for their own personal residential use, if all the following requirements are met:”
  • Who permits septicLocal

    Onsite sewage systems inside Marion city limits; the local health department administers the applicable onsite sewage program.

    • The program begins with site and soil evaluation.
    • A certified Kentucky onsite septic installer must install the system based on the site-evaluation results.
    “The Onsite Sewage Disposal Systems Program is administered through local health departments and begins with the use of onsite evaluations to determine if site and soil conditions are suitable for onsite wastewater systems.”
  • Building in a floodplainRequired

    Construction, demolition, or renovation inside a floodplain within Marion city limits.

    • Kentucky law requires a state floodplain permit before work begins within a floodplain.
    • Projects affecting streams or wetlands may require additional approvals.
    • Participating communities may require separate local floodplain permits and may adopt stricter standards.
    “To protect structures from flood damage, Kentucky law (401 KAR 4:060​ ) requires a state floodplain permit before starting any construction, demolition, or renovation within a floodplain ​.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Marion or Crittenden County directly.

  • Building permit — Building permits for construction inside Marion city limits.
  • Certificate of occupancy — Certificates of occupancy for buildings inside Marion city limits.
  • Minimum dwelling size — Minimum dwelling size inside Marion city limits.
  • Minimum lot size — Minimum lot size inside Marion city limits.
  • Setbacks — Building setbacks inside Marion city limits.
14 more unanswered
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Short-term rentals
  • Permit fees

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Marion publishes no rule on the point, not that none exists. Crittenden County’s page lists the county offices to call.

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