Nelson County, Kentucky requires building permits, inspections and certificates of occupancy for covered residential construction and alteration.123 Nelson County Code Enforcement handles building applications; the Joint City-County Planning Commission administers zoning across separate county and city jurisdictions; and Lincoln Trail District Health Department handles septic permits throughout Nelson County.456
At a glance
- Building permit
- Required for covered residential construction and alterations7
- Zoning
- Yes; county and city jurisdictions have separate maps and rules5
- Septic
- Site evaluation, permit and inspection required89
- RV living
- Recreational vehicles may not be used as dwelling units10
- Accessory dwelling
- Allowed with district-specific lot, size and wastewater conditions111213
- Owner-builder
- Owner plumbing and HVAC permits are available; county building approval remains required1415
- Private well
- Use a Kentucky-certified water-well driller16
Who to call
Building permits
Nelson County Code Enforcement
Building permits, inspections, addressing and county code enforcement
1 Court Square, Second Floor, Bardstown, Kentucky 40004
Planning & zoning
Joint City-County Planning Commission of Nelson County
Zoning compliance, subdivision review, site plans and zoning questions
989 Chambers Blvd. Bardstown, KY 40004
Septic permits
Nelson County Health Department Environmental Services
Septic site evaluations, installation permits and inspections
325 South Third Street
Roads & driveways
County-road access and encroachment questions
820 West Stephen Foster Ave., Bardstown, Kentucky 40004
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 Nelson County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Nelson County, Kentucky?
Yes. Nelson County requires a building permit for construction or alteration of detached one- and two-family homes, qualifying apartments and townhouses, and their accessory structures.1 Nelson County has adopted the Kentucky Building Code and Kentucky Residential Code, including periodic amendments and updates.17
New one- and two-family construction requires at least 3 building inspections: footer, framing and final.18 Residential new construction and additions are listed at $225 with the minimum inspections.19 A certificate of occupancy is required for the residential structures covered by the county ordinance.3 Zoning compliance is a separate approval, and the zoning application requires a septic evaluation or applicable approval when the site lacks sewer service or uses an existing septic system.2021
Who issues building permits in Nelson County, Kentucky?
Nelson County Code Enforcement handles building-permit applications and publishes the building permit and inspection fee schedule.422 Call (502) 348-1862 or email codesclerk@nelsoncountyky.gov for the building-permit program.23 Inside Bardstown, the building and zoning-compliance application also directs applicable documents and fees to Nelson County Code Enforcement.24 Lincoln Trail District Health Department remains the onsite sewage permitting authority throughout Nelson County, including city addresses.6
A building application requires construction documents, a scaled plot plan, an address request, zoning compliance approval, applicable entrance approval and fees; the zoning package also calls for the deed or survey and applicable septic documentation.20 State roads require a state entrance permit, county roads require a county encroachment permit, and city streets require the applicable city approval.25 A private driveway does not itself require zoning compliance approval, but road-access approval can still be required.26
Does Nelson County, Kentucky have zoning?
Yes. Unincorporated Nelson County is zoned, and the Joint City-County Planning Commission maintains its official zoning map.2728 Bardstown adopts its own zoning map; the joint regulations also cover Bloomfield, Fairfield and New Haven under separate legislative jurisdictions.295 Septic permits remain with Lincoln Trail District Health Department across county and city jurisdictions.6
Lot area, setbacks, impervious coverage and height depend on the district and subdivision option; the 10-acre conservancy-lot minimum is not a countywide minimum.30313233 Accessory structures generally have 5-foot rear and side setbacks, or 6 feet along a platted alley, subject to exceptions.34 Subdivision plats require Planning Commission review.35 Qualifying agricultural structures still need zoning compliance approval, a plot plan and a signed agricultural-use affidavit; the zoning-permit fee is waived, but street setbacks and floodplain controls remain applicable.36
How do septic permits work in Nelson County, Kentucky?
Lincoln Trail District Health Department handles onsite sewage permits and inspections throughout Nelson County, including incorporated cities.6 Nelson County Health Department Environmental Services is the local contact for the septic site evaluation, installation permit and inspection.21
Arrange the site evaluation before fixing the house location; the septic permit application then requires a detailed drawing and fees.37 After a suitable or provisionally suitable evaluation, a certified installer may apply for the installation permit; a homeowner installing the system personally must use the health department's homeowner-permit process.838 The septic installation permit expires after 1 year unless extended, and the installed system must pass health department inspection.3739 Only 10.9% of mapped Nelson County soils are rated without severe limitations for a conventional septic drain field, so make satisfactory septic evaluation a purchase contingency.40 Approved onsite septic can serve a home where sewer is unavailable; unapproved off-grid waste disposal is not an alternative.4142
Can you live in an RV or tiny home in Nelson County, Kentucky?
Nelson County prohibits using travel trailers or other recreational vehicles as dwelling units or permanently connecting them to utilities.10 We could not confirm temporary camping rules for private land; ask the Joint City-County Planning Commission before an overnight or seasonal stay.43
In Nelson County's A-1 Agriculture District, a qualifying single-wide mobile home no wider than 18 feet may be a principal use on at least 1 acre.44 Manufactured homes wider than 18 feet must follow manufacturer installation directions and have a solid concrete-block or concrete perimeter foundation; district and permit requirements also apply.45
A detached accessory dwelling must be permanent, behind the principal home, meet accessory setbacks, and stay within 1,000 square feet of living area and 1,500 square feet total gross floor area.13 A-1 requires at least 2 acres and approved wastewater service for both dwellings; R-1A requires a lot twice the district minimum and approved onsite sewage disposal for both.1112 Site-built tiny homes remain subject to applicable building permits, inspections and occupancy approval; we could not confirm a general minimum dwelling size, so ask Planning and Code Enforcement to classify the design.464323
Building a home in Nelson County, Kentucky: what are the steps?
- Ask Planning to confirm the parcel's jurisdiction, district, allowed use and dimensional standards.543
- Obtain the applicable septic evaluation or permit through Nelson County Health Department Environmental Services.421
- Obtain the state entrance permit, county encroachment permit or city street approval from the road authority.25
- Submit the zoning-compliance package with the deed or survey, plot plan and applicable septic, access and development approvals.20
- Submit the building application, construction documents, plot plan, address request, zoning approval and fees to Code Enforcement; the zoning permit expires if a building permit is not obtained within 60 consecutive days.20
- Complete required building inspections and obtain the certificate of occupancy for covered residential construction.183
Owner-performed plumbing and HVAC work require homeowner permits before work begins, affidavits and code compliance; HVAC also requires sizing and duct/piping plans.4748 These authorizations do not waive county building or zoning approval.48 An applicant exempt from workers' compensation coverage must submit the applicable exemption affidavit to the building official.49
What should you check before buying land in Nelson County?
Confirm the parcel's zoning map, district, access approval and subdivision history before treating a listing as buildable.282535 Make septic approval a purchase contingency because only 10.9% of mapped soils avoid severe conventional-drain-field limitations.40 Kentucky does not require an owner-applied permit or fee for an ordinary private well, but a Kentucky-certified water-well driller must perform the work.50
Ask Planning about local floodplain review; state approval is required for work near a river or stream or in a floodway that may affect water flow.5152 New construction and substantial improvements in regulated floodplains also face elevation or floodproofing requirements.53 Electrical or natural-gas connections for new construction or changed use must be made by the utility unless it gives specific permission otherwise.54 Short-term rentals in applicable unincorporated Nelson County districts require conditional-use approval and compliance with occupancy rules.55 The effective property-tax rate is about 0.8%, and the median annual bill is $1,782.5657
Watch-outs
- Travel trailers and other recreational vehicles cannot be used as dwelling units in Nelson County.10
- Only 10.9% of mapped soils avoid severe conventional-septic limitations, so obtain the septic site evaluation early.408
- State roads, county roads and city streets have different driveway-approval authorities.58
- Qualifying agricultural structures still need zoning compliance approval, a plot plan and an agricultural-use affidavit.36
Sources
- Nelson County Code Enforcement Ordinance 2023-009, quoted and re-checked
- An Ordinance relating to the Code Enforcement Department, quoted and re-checked
- Nelson County Code Enforcement Ordinance 2023-009, quoted and re-checked
- Building & Zoning Compliance Permit Application, quoted and re-checked
- Zoning Regulations as Passed by Nelson County Fiscal Court, quoted and re-checked
- On-Site Sewage, quoted and re-checked
- Code Enforcement Ordinance 2023-009, quoted and re-checked
- On-Site Sewage, quoted and re-checked
- Onsite Sewage Disposal Systems Program, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- nelsoncountyky.gov, quoted and re-checked
- nelsoncountyky.gov, quoted and re-checked
- Zoning Regulations, quoted and re-checked
- 815 KAR 20:050, Installation permits, quoted and re-checked
- 815 KAR 8:070, Installation permits, quoted and re-checked
- 401 KAR 6:320. Certification of water well drillers and water well driller assistants (Kentucky statewide rule), quoted and re-checked
- Nelson County Code Enforcement Ordinance 2023-009, quoted and re-checked
- Nelson County Code Enforcement Ordinance 2023-009, quoted and re-checked
- An Ordinance relating to the Code Enforcement Department, quoted and re-checked
- Non-Commercial Building/Zoning Compliance Permit Application, quoted and re-checked
- Nelson County Health Department Environmental Services (ncpz.com)
- Code Enforcement – Nelson County, Kentucky, quoted and re-checked
- Nelson County Code Enforcement (nelsoncountyky.gov)
- Bardstown: Building & Zoning Compliance Permit Application (Nelson County), quoted and re-checked
- Building & Zoning Compliance Permit Application, quoted and re-checked
- Non-Commercial Building/Zoning Compliance Permit Application, quoted and re-checked
- Zoning Regulations as Passed by Nelson County Fiscal Court, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Bardstown: § 153.01 Readopting the Official Zoning Map (Nelson County), quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, quoted and re-checked
- Zoning Regulations as Passed by Nelson County Fiscal Court, quoted and re-checked
- Subdivision Regulations for Nelson County, Kentucky, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- 902 KAR 10:085 Kentucky on-site sewage disposal systems, quoted and re-checked
- Kentucky Onsite Sewage Disposal Systems Program, quoted and re-checked
- Kentucky Onsite Sewage Disposal Systems Program, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- On-Site Sewage, quoted and re-checked
- 902 KAR 10:085 Kentucky Onsite Sewage Disposal Systems (Kentucky statewide rule), quoted and re-checked
- Joint City-County Planning Commission of Nelson County (ncpz.com)
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Code Enforcement Ordinance No. 2023-009, quoted and re-checked
- Kentucky Department of Housing, Buildings and Construction Frequently Asked Questions, quoted and re-checked
- 815 KAR 8:070 Installation permits, quoted and re-checked
- 120 KAR 1:210 Affidavit of exemption from KRS Chapter 342, quoted and re-checked
- Water Well Information for Home Owners (Kentucky statewide rule), quoted and re-checked
- Nelson County Fiscal Court Administrative Code Minutes, quoted and re-checked
- Floodplain Ordinance, quoted and re-checked
- Nelson County Floodplain Ordinance, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Zoning Regulations for Bardstown, Bloomfield, Fairfield, New Haven, and Nelson County, Kentucky 2026, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Non-Commercial Building/Zoning Compliance Permit Application, 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.