Unincorporated Madison County, Mississippi requires a permit before constructing a building, placing a manufactured or modular home, or relocating a structure1. Madison County Planning and Zoning administers building permits, inspections and zoning there2. If public sewer is unavailable, the residential permit process also requires Mississippi State Department of Health septic approval3.
At a glance
- Building permit
- Required before covered construction, home placement or structure relocation1
- Zoning
- County zoning applies to unincorporated land; Jackson administers its own zoning45
- Septic approval
- State approval required when public sewer is unavailable63
- RV living
- Private-land occupancy rules were not confirmed; ask county Planning and Zoning7
- Tiny homes
- No specific county rule was confirmed; parcel zoning still applies8
- Owner-builder
- State licensing exemption available for work on your own residence; county permits and inspections still apply9
- R-1 lot rules
- Two-acre minimum lot; district-specific setbacks and lot coverage apply101112
Who to call
Building permits
Madison County Planning and Zoning Department
Building permits, construction inspections, zoning administration and floodplain questions for unincorporated Madison County
125 West North Street, Canton, MS 39046
Septic permits
Mississippi State Department of Health, Division of On-Site Wastewater
Individual onsite wastewater applications, recommendations, permits and inspections
570 East Woodrow Wilson Drive, Jackson, MS 39216
Contact details are copied from each office’s official page and were checked against it on October 11, 2026.
Off-grid gear
Going off-grid in Madison 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 Madison County, Mississippi?
Yes. Before work starts in unincorporated Madison County, a permit is required to construct or erect a building, place a manufactured or modular home, or relocate an existing structure1. A permit remains valid for 2 years, but becomes void if construction does not begin within 6 months or work is abandoned for 6 months; starting without a permit doubles the permit fee1. Permits are issued only to licensed contractors or property owners13. Mississippi exempts a person who builds or improves that person's own residence, or acts as general contractor for that work, from the residential-builder licensing chapter; Madison County permits and inspections still apply9. Jackson, which reaches into Madison County but lies mainly in Hinds County, issues its own building permits inside city limits14. Septic review there remains with the Mississippi State Department of Health15.
Who is the Madison County building department, and how do you reach it?
Madison County Planning and Zoning administers building permits, construction inspections, zoning and the county Flood Damage Prevention Ordinance for unincorporated land2. The office is at 125 West North Street in Canton, and its direct number is (601) 855-55017. Residential applicants must provide contractor-license or ownership documentation, health approval when public sewer is unavailable, 2 sets of plans, an E-911 address printout and a water-provider verification letter; applicable subdivision architectural approval comes before permit submission16. The county publishes a $150 mobile-home permit fee payable by cash or check and an $85 electrical or gas permit fee, but no general residential building-permit fee schedule was confirmed1718.
Does Madison County have zoning?
Madison County zoning governs land use in unincorporated areas4. In the portion of Jackson that reaches into Madison County, the city administers zoning; onsite wastewater remains with MSDH515. The ordinance divides unincorporated land into districts, so permitted uses and dimensions depend on the official zoning map available at Planning and Zoning19. Residential subdivision development is also regulated: subdivision plats and construction plans are required, and additional county subdivision regulations apply20. For example, the R-1 Residential Estate District has a 2-acre minimum lot, 50-foot front and rear yards, 25-foot side yards and a 15% maximum buildable area101112. The R-1 dimensions are district-specific, not countywide residential defaults101112. The confirmed dwelling-size requirements are for multifamily units in R-3, ranging from 750 to 1,200 square feet by bedroom count21.
How do septic permits work in Madison County?
The Mississippi State Department of Health handles individual onsite wastewater review and inspections in Madison County622. When public sewer is unavailable, Madison County requires the MSDH recommendation form 335 for the residential permit process and approval form 910 after septic installation; permanent electrical service cannot be released without form 910323. An MSDH Permit/Recommendation is also required to obtain a water meter where onsite disposal is used24. Start with the Division of On-Site Wastewater at 601-576-7150 or its wastewater call center at 1-855-220-019225. Only about 2.3% of county soils are rated without severe limitations for a conventional drain field, so establish site feasibility before closing26.
Can you live in an RV or tiny home on your land in Madison County?
We could not confirm a general rule allowing or prohibiting long-term RV occupancy or temporary camping on private land in unincorporated Madison County; ask Planning and Zoning7. Ask Planning and Zoning whether the parcel's mapped district permits the proposed use and what utility approvals apply27. We could not confirm how Madison County classifies tiny homes; ask Planning and Zoning7. A site-built tiny home would still fall within the county permit requirement for constructing a building, while a manufactured or modular tiny home would require a permit before placement1. The confirmed R-3 floor-area minimums apply only to multifamily dwellings, not every small house21. A manufactured tiny home installed on or after July 1, 2009 must also undergo the Mississippi Inspection Program inspection before occupation27.
Building a home in Madison County: the steps, in order
- Confirm that the parcel is unincorporated, then verify its zoning district and allowed residential use with Madison County Planning and Zoning419.
- If land will be divided for residential development, address the required subdivision plat, construction plans and county subdivision regulations before relying on a proposed lot layout20. Obtain any applicable subdivision architectural approval before submitting the county permit application16.
- If public sewer is unavailable, obtain the required MSDH recommendation, and request a verification letter from the water provider328.
- Submit ownership or contractor documentation, 2 plan sets, the E-911 address printout and required utility documents to Planning and Zoning1316.
- Complete septic installation and obtain MSDH form 910 before permanent electrical service is released23.
What should you check before buying land in Madison County?
Before buying in unincorporated Madison County, ask Planning and Zoning to check the parcel against the official zoning and flood maps; the department administers the Flood Damage Prevention Ordinance, but we could not confirm the operative floodplain development-permit requirements192. If a seller proposes residential subdivision lots, county plat and construction-plan requirements apply20. MSDH also reviews residential divisions of 10 or more lots for onsite-wastewater suitability before lots are sold or construction starts; local rules can lower that threshold, and public-water review may apply regardless of lot count31. About 2.3% of Madison County soils avoid severe limitations for conventional septic drain fields, so establish wastewater feasibility before closing26. A new or altered driveway onto a state highway requires state approval; direct county-road questions to the Road Department2930. A groundwater-withdrawal permit applies to wells with surface casing diameters of 6 inches or more, subject to exclusions; that threshold does not resolve every well-construction requirement32.
Watch-outs
- Only about 2.3% of Madison County soils are rated without severe limitations for a conventional drain field, so obtain onsite wastewater review before relying on a proposed house site2625.
- The county building-permit and zoning rules described here apply to unincorporated Madison County; Jackson administers its own building permits and zoning, while MSDH retains onsite wastewater review414515.
- The county publishes a $150 mobile-home permit fee payable by cash or check, but a complete residential permit-fee schedule was not confirmed3318.
- The county's specific adopted building-code edition, private-land RV occupancy rules and tiny-home rules were not confirmed; ask Planning and Zoning at (601) 855-5501 before committing to a design or occupancy plan7.
Sources
- Madison County Zoning Ordinance, quoted and re-checked
- Planning and Zoning | Madison County Mississippi, quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- Planning and Zoning | Madison County Mississippi, quoted and re-checked
- Jackson: Office of City Planning - City of Jackson (Madison County), quoted and re-checked
- On-Site Wastewater - Mississippi State Department of Health, quoted and re-checked
- Madison County Planning and Zoning Department (madison-co.com)
- Planning and Zoning | Madison County Mississippi, quoted and re-checked
- Senate Journal, March 9, 2022 — Section 73-59-15, quoted and re-checked
- Madison County Zoning Ordinance, quoted and re-checked
- Madison County Zoning Ordinance, quoted and re-checked
- Madison County Zoning Ordinance, quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- Jackson: Building Permits - City of Jackson (Madison County), quoted and re-checked
- Jackson: On-Site Wastewater - Mississippi State Department of Health (Madison County), quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- How Do I? — Madison County Planning and Zoning, quoted and re-checked
- Planning and Zoning | Madison County Mississippi, quoted and re-checked
- Planning and Zoning | Madison County Mississippi, quoted and re-checked
- madison-co.com, quoted and re-checked
- On-Site Wastewater - Mississippi State Department of Health, quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- On-Site Wastewater - Mississippi State Department of Health, quoted and re-checked
- Mississippi State Department of Health, Division of On-Site Wastewater (msdh.ms.gov)
- 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
- MH-5 Uniform Standards Code for Factory-Built Homes Law (Mississippi statewide rule), quoted and re-checked
- How Do I? | Madison County Mississippi, quoted and re-checked
- Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
- Madison County Road Department (madison-co.com)
- Subdivision Plan Review (Mississippi statewide rule), quoted and re-checked
- Guidelines for Securing the Services of a Water Well Driller (Mississippi statewide rule), quoted and re-checked
- How Do I? | Madison County Mississippi — Mobile Home Approval, quoted and re-checked
Written October 11, 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.