Bolthole Index

Simpson County, Mississippi

Building permits, zoning and land rules in Simpson County, Mississippi

66Index Score / 100
#62 of 82 in Mississippi

Unincorporated Simpson County, Mississippi requires building permits and inspections for residential and commercial construction through the Office of Community Development1. The county also requires permits for remodeling and manufactured homes2. Countywide zoning could not be confirmed, so ask Community Development about parcel-specific uses and dimensions32. Septic permits and site evaluations go through the Mississippi State Department of Health45.

At a glance

Building permit
Required for residential and commercial construction in unincorporated Simpson County1
Remodeling
A county building permit is required for remodeling projects2
Manufactured home
File the county permit before moving the home onto the property2
Zoning
Countywide zoning is unconfirmed; ask Community Development about the parcel32
Septic
MSDH requires a permit and evaluates the site before installation5
RV or tiny home
Private-land occupancy rules could not be confirmed; ask Community Development32
Owner-builder
The state licensing exemption for work on your own residence does not waive county permits61
Water well
A state withdrawal permit applies at the specified casing-size threshold7

Who to call

Building permits

Simpson County Community Development Department

Building, remodeling, manufactured-home and contractor permits in Simpson County

601-675-2366

[email protected]

Septic permits

Mississippi State Department of Health Division of On-Site Wastewater

On-site wastewater applications, site evaluations and septic-system assistance for Simpson County

1-855-220-0192

[email protected]

570 East Woodrow Wilson Drive, Jackson, MS 39216

Online permits →

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 Simpson County, Mississippi?

Yes. Unincorporated Simpson County requires building permits and inspections for residential and commercial construction, with the Office of Community Development issuing the permits1. The county says a building permit is also required for remodeling projects2. A manufactured home requires a permit filed before the home is moved onto the property2. Simpson County's ordinance calls for inspections under the 2021 IRC and IBC1. Mississippi's statewide framework requires counties and municipalities to enact uniform building codes unless they opted out before the state deadline, but Simpson County's local permit requirement is the more direct answer here81.

Who handles Simpson County building permits, and how do you reach the office?

The Simpson County Community Development Department handles building, remodeling, manufactured-home and contractor permits2. Call 601-675-2366 or email [email protected] during the office's weekday business hours2. The county tells general contractors, HVAC installers, electricians and plumbers operating in Simpson County to file an office permit and renew it annually2. Ask Community Development for the current application, fee schedule, required plan set and inspection sequence before design or site work begins, because those process details could not be confirmed from a reviewable county source. For a manufactured home, contact the office before delivery; Simpson County says the permit must be filed before the unit is moved onto the property2.

Does Simpson County have zoning?

We could not confirm a countywide zoning ordinance or an official statement that unincorporated Simpson County has no zoning3. That leaves parcel-specific questions about setbacks, minimum lot size, lot coverage, building height, accessory dwellings and allowed uses unresolved. Ask the Simpson County Community Development Department to check the parcel before relying on a seller's description or designing a site plan2. The same caution applies to agricultural buildings: no agricultural exemption from county construction or land-use requirements could be confirmed. Property inside a municipality may be subject to city requirements rather than the unincorporated-county process, so identify the parcel's jurisdiction before applying. Simpson County's building-permit requirement still applies to the unincorporated construction covered by the county ordinance even though the zoning question remains open13.

How do septic permits work in Simpson County?

The Mississippi State Department of Health handles on-site wastewater rules and technical assistance for Simpson County, which MSDH places in its Central Region49. A new individual septic system requires an MSDH permit5. An MSDH environmentalist evaluates the property and sends the wastewater options that can work on the site; a certified installer must contact MSDH before installation, and the environmentalist returns afterward to approve a properly installed system510. Only about 7.8% of Simpson County soils are rated without severe limitations for a conventional drain field, so make the site evaluation an early purchase contingency rather than assuming a conventional system will fit11. Household wastewater and gray water may not be discharged onto the ground, into a ditch or into a body of water; it must go to a lawful sewer or septic system12.

Can you live in an RV or tiny home on your land in Simpson County?

We could not confirm a Simpson County rule that allows or prohibits long-term RV living, temporary private-land camping or tiny-home occupancy3. Ask the Simpson County Community Development Department about the specific parcel and proposed use before buying land or placing a unit2. A tiny home intended as a residence should not be assumed exempt from the county's residential building-permit requirement1. A manufactured home clearly needs a county permit before it is moved onto the property2. Whatever structure is used, household wastewater and gray water cannot be discharged onto the ground, into a ditch or into a body of water; lawful sewer or septic disposal is required12. Campground rules for the Pearl River Valley Water Supply District do not establish private-land occupancy rules in Simpson County13.

Building a home in Simpson County: the steps, in order

  1. Confirm that the parcel is in unincorporated Simpson County and ask Community Development about zoning, setbacks and the current permit checklist32.
  2. Apply to MSDH for the required septic permit and property evaluation before fixing the house site5.
  3. Submit the residential building-permit materials requested by Community Development; unincorporated residential construction requires a county permit and inspections1.
  4. If acting as your own general contractor on your own residence, use the state licensing exemption only as a licensing exemption, not as an exemption from the county permit61.
  5. Have the certified septic installer coordinate with MSDH and obtain final system approval after installation510.
  6. For access onto a state highway, obtain the required MDOT driveway permit14.
  7. Ask Community Development which inspections and close-out documents are required before occupancy because a local certificate-of-occupancy rule could not be confirmed2.

What should you check before buying land in Simpson County?

Start with septic suitability: only about 7.8% of Simpson County soils are rated without severe limitations for a conventional drain field11. The county receives about 58.8 inches of precipitation annually, while about 69.6% of its land has a slope of 15% or less and about 76.1% is wooded; inspect the actual tract for drainage, clearing and driveway costs151617. Confirm legal access, and remember that a new or altered driveway connecting to a state highway requires an MDOT permit14. A groundwater-withdrawal permit is required for a well with a surface casing diameter of 6 inches or more, subject to exclusions7. Simpson County's effective property-tax rate is about 0.6%, and the median annual property-tax bill is about $6711819. Before closing, ask Community Development about zoning and floodplain review because neither countywide zoning nor a county floodplain-development process could be confirmed32.

Watch-outs

  • Do not treat the unconfirmed zoning record as permission for any use; ask Simpson County Community Development about the parcel, setbacks and occupancy plan32.
  • A septic permit and property evaluation are required before a new individual system is installed, and the system must receive MSDH approval after installation510.
  • The owner-builder licensing exemption does not cancel Simpson County's building-permit requirement61.

Sources

  1. Simpson County - Permits and Zoning (Office of Community Development) (2026 county census)
  2. Simpson County Community Development Department (simpsoncountyms.com)
  3. (2026 county census)
  4. On-Site Wastewater, quoted and re-checked
  5. On-site Wastewater Application Process, quoted and re-checked
  6. Mississippi Senate Journal, March 9, 2022 (Mississippi statewide rule), quoted and re-checked
  7. Guidelines for Securing the Services of a Water Well Driller (Mississippi statewide rule), quoted and re-checked
  8. Mississippi Uniform Building Codes (Mississippi statewide rule), quoted and re-checked
  9. Mississippi State Department of Health Division of On-Site Wastewater (msdh.ms.gov)
  10. On-site Wastewater Application Process, quoted and re-checked
  11. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  12. WasteWater Frequently Asked Questions, quoted and re-checked
  13. General Campground Rules and Policies - Ross Barnett Reservoir (Mississippi statewide rule), quoted and re-checked
  14. Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
  15. Annual precipitation: Bolthole Index county data
  16. Share of land at 15% slope or less: Bolthole Index county data
  17. Wooded share of land: Bolthole Index county data
  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.

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County locator

Simpson County in Mississippi

66
County map
Simpson County highlighted among the Mississippi counties · colored by Index score

How Simpson County scores

Seclusion46100% ev.
Self-Sufficiency69100% ev.
Admin Boringness5377% ev.
Durability64100% ev.
Property Autonomy39100% ev.
Carry Cost86100% ev.

Evidence strength: 96%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$159kTypical home
0.6%Property tax
$3,201Land / acre
58.8"Annual rain
4.5% of yrsSevere drought
11.9 / yr (+10.6)Mid-century 100°F days
16.7 daysMid-century dry spell
2.89" (+7%)Mid-century 1-day rain
1.44×Wildfire change factor
100%Forward climate coverage
$2,082Home insurance / yr
1.1% / yrInsurance growth
1.66%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
40,360People within 30 min
1,429,147People within 2 hr
32,366Radius comparison (15 mi)
43.6People / sq mi
0%Federal land
69.6%Land at 15% slope or less
7.8%Septic soil without severe limits
29,046 acWorkable land screen
76.1%Wooded land
53.2 tonsBiomass / forest ac
65°FAvg temp

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Answers from the rulebook for Simpson County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Simpson County rules

  • Building permitRequired

    The Board of Supervisors adopted an ordinance (Jan 6, 2025) requiring building permits and 2021 IRC/IBC inspections for residential and commercial construction in unincorporated areas, issued by the Office of Community Development.

    Simpson County - Permits and Zoning (Office of Community Development) ↗Scouted from the county site, not yet independently re-checked

Mississippi rules that apply here

  • Owner-builder exemptionAvailable (with conditions)

    A person undertaking construction or improvement on the person's own residence or acting as the person's own general contractor for construction or improvement on that residence, for purposes of Mississippi residential builder and remodeler licensing requirements.

    • The exemption concerns the licensing chapter for residential builders and remodelers; it does not by itself establish exemption from a locally required building permit or inspection.
    • The same official legislative text also states that related exemptions have limits on permit applications or residences constructed within a one-year period, depending on the subsection and circumstances.
    “(1) This chapter shall not apply to: [...] (b) Any person who undertakes construction or improvement on his own residence, or who acts as his own general contractor in the performance of construction or improvement on his own residence;”
  • Building code adoptedPartial

    Mississippi counties and municipalities subject to the statewide uniform-building-code framework.

    • All counties and municipalities must enact uniform building codes unless they opted out prior to November 30, 2014.
    • The source describes the statewide framework but does not establish that every county or municipality currently has an adopted code.
    “Under Senate Bill 2378 of 2014, all counties and municipalities must enact uniform building codes unless they opt out prior to Nov. 30, 2014. Please complete the following information regarding your county or municipality’s building code policies.”
  • InspectionsLimited

    Pediatric skilled nursing facilities regulated by the Mississippi State Department of Health.

    • Upon completion of construction, the Licensing Agency must inspect and approve the facility before occupancy.
    • The state and county health departments may access the job site during regular business hours and conduct construction progress inspections as deemed necessary by the agency.
    “Upon completion of construction, an inspection shall be made by the Licensing Agency and approval given prior to occupying the building or any part thereof. The state and county health departments shall have access to the job site during regular business hours and shall conduct construction progress inspections as deemed necessary by the agency.”
  • Certificate of occupancyLimited

    Pediatric skilled nursing facilities regulated by the Mississippi State Department of Health at final inspection and close-out.

    • At final inspection, the State Agency must receive a Certificate of Occupancy or statement of approval from the local building official permitting occupancy for the facility's intended use.
    • If there is no local building authority, approval from the local fire authority having jurisdiction must be provided.
    • If the facility is state-owned and subject to the State Bureau of Buildings, Grounds and Real Estate Management, approval of occupancy must be coordinated between the state agencies involved.
    “A copy of the Certificate of Occupancy or statement of approval from the local building official permitting occupancy of the facility for its intended use. In the absence of a local building authority, approval of a local fire authority having jurisdiction shall be provided. If the facility is owned by the State of Mississippi and subject to the State Bureau of Buildings Grounds and Real Estate Management, approval of occupancy shall be coordinated between the state agencies involved;”
  • Who permits septicState

    On-site wastewater systems and related inspections in Simpson County; Simpson is listed in MSDH’s Central Region.

    • The Mississippi State Department of Health develops policy and regulations and provides technical assistance for individual on-site wastewater systems.
    • The same program covers recreational vehicle campgrounds/lodging parks, septage pumpers/haulers, and individual water supplies.
    “The On-site Wastewater program develops policy and regulations and provides technical assistance to regional environmentalists”
    2 more reviewed findings on this topic
    • State — On-site wastewater administration applicable to Simpson County.
      “The On-site Wastewater program develops policy and regulations and provides technical assistance to regional environmentalists in designing and inspecting Individual On-site Wastewater Disposal Systems (IOWDS), recreational vehicle campgrounds/lodging parks, septage pumpers/haulers and individual water supplies.”
    • Mixed — Statewide individual onsite wastewater disposal systems; the Mississippi State Department of Health establishes the rules and the appropriate county Department of Health performs local inspections.
      “Notify the Department at least 48 hours before beginning construction if acting as the Certified Installer of an Individual On-site Wastewater Disposal System and, at that time, schedule a time for inspection of the system with the appropriate county Department of Health.”
  • Septic permitRequired

    New individual on-site wastewater systems serving property in Simpson County.

    • An MSDH Environmentalist evaluates the property and emails a Permit/Recommendation listing wastewater treatment and disposal options that can work on the property.
    • A certified installer must contact MSDH before installing the system.
    • After installation, the Environmentalist visits and approves the system if properly installed.
    • A Final Approval is emailed after the required affidavits are provided.
    “The Permit is required for [...] the installation of an on-site wastewater disposal system.”
    One more reviewed finding on this topic
    • Required — Installation of an onsite wastewater disposal system and obtaining a water meter in Simpson County.
      “The Permit is required for a water meter and the installation of an on-site wastewater disposal system.”
  • Septic inspectionRequired

    New individual on-site wastewater systems in Simpson County.

    • The MSDH Environmentalist visits after installation and approves the system if installed properly.
    • Existing-system inspections are a separate process; MSDH does not require a septic inspection solely as part of a real-estate transaction.
    • Advanced Treatment Systems also require inspection by a certified manufacturer representative.
    “The Environmentalist will then visit your property on that day and approve of the system if it is installed properly.”
    One more reviewed finding on this topic
  • Off-grid sanitationProhibited

    Discharge of household wastewater or gray water outside a central sewer or septic system in Simpson County.

    • Mississippi does not recognize gray water as a separate disposal category.
    • All wastewater must be directed to a central sewer system or septic system.
    “Mississippi does not recognize gray water. Anything that could be considered gray water in other states is classified as wastewater in Mississippi. All wastewater is required to pipe into a central sewer system or a septic system for proper disposal. No “gray water” can be discharged on the ground, ditches, or bodies of water.”
    One more reviewed finding on this topic
    • Prohibited — Disposal of household wastewater or gray water on the ground, in ditches, or in bodies of water in Simpson County.
      “No “gray water” can be discharged on the ground”
  • Well permitLimited

    Groundwater withdrawal permits for water wells in Mississippi.

    • A groundwater withdrawal permit is required for water wells with surface casing diameters of 6 inches or greater.
    • Some exclusions apply.
    • A separate contractor licensing requirement generally applies, but a landowner may drill without a Water Well Contractor license for a single-family permanent residence or farm livestock use if applicable construction standards are followed.
    • Wells with surface casing diameters below 6 inches may still be regulated by the Mississippi State Department of Health when part of a public water system.

    surface casing diameter threshold: >= 6 inches (Some exclusions apply.)

    “State law requires that you obtain a groundwater withdrawal permit for water wells with surface casing diameters 6-inches or greater in diameter. Some exclusions apply to this requirement.”
  • Mandatory utility hookupConditional

    Public water connections and connection to centralized wastewater treatment systems for residences, buildings, and facilities in Mississippi.

    • A public water utility may not connect water service without prior written Department approval certifying that the sewage treatment and disposal plan complies with state law.
    • Water utility connections may be made during construction only if the Department approved the sewage plan and the owner agreed to inspection and approval before use or occupancy.
    • Where centralized wastewater treatment is constructed and becomes available, onsite systems must be abandoned and residences, buildings, or facilities connected to the centralized system.
    • Temporary onsite systems may be used only under the stated 36-month centralized-treatment conditions.

    centralized wastewater availability deadline: 36 months (The developer must sign a written agreement to connect when available and install internal sewage collection to the connection point.)

    “Where a Centralized Wastewater Treatment System is available, all places shall have a properly constructed connection to the centralized wastewater treatment system which all human excreta and other liquid waste shall be disposed”
    One more reviewed finding on this topic
    • Conditional — Permanent water-meter and utility connection prerequisites applicable in Simpson County.
      “State law requires you have permanent sewage disposal solution available to receive a permanent water meter. Permanent sewage disposal solutions can be a sewer line or septic system. You must have a sewer option before a water utility can make a connection to your property.”
  • Driveway accessRequired

    Driveways and specified changes of use connecting to Mississippi state highways.

    • A permit is required for new driveways.
    • A permit is required for alterations to existing drives.
    • A permit is required for a change of use causing a daily-trip increase of 10% or 100 daily trips, whichever is greater.
    • A permit is required for property-use changes from non-commercial to commercial.
    • If access is expected to exceed 100 peak-hour trips, a traffic-impact study must be submitted.
    • If the permitted land use changes, the original permit is revoked and a new permit must be applied for.
    • A denied permit may be appealed within 10 days after receipt of the denial notification.

    daily trip increase threshold: 10 percent (or 100 daily trips, whichever is greater) · traffic impact study threshold: > 100 peak-hour trips · appeal deadline: 10 days (after receipt of denial notification)

    “For State Highways a permit is required for: 1. New driveways; 2. Alterations to existing drives;”
  • Building in a floodplainRequired

    Development or improvement activity on state-owned Mississippi property or buildings located in FEMA Special Flood Hazard Area zones A, AE, V, or VE.

    • The requirement applies to state-owned property or buildings.
    • For existing structures determined to involve less than a Substantial Improvement, no additional forms or approval are required after Step One.
    • For new development or a Substantial Improvement, the applicant must complete the Step Two form, obtain a Control Code, provide all required attachments, and submit final elevation certification and complete drawings and specifications.
    • Approval produces an initial approval letter and, after final requirements are approved, a final approval letter.
    • If Step Two is not approved and the project cannot be brought into compliance, a denial letter is issued.

    covered FEMA zones: A, AE, V, VE · substantial improvement threshold: less than a Substantial Improvement (no additional forms or approval required for the development project)

    “A development or improvement activity to state-owned property or building, [...] must complete a Floodplain Management Permit Application.”
  • Permit feesPublished (with conditions)

    Mississippi Department of Transportation over-dimensional and related permits statewide.

    • The published schedule applies to MDOT permit types, not a general statewide building-permit fee schedule.
    • Blanket permits are not prorated and are issued for one year unless otherwise specified.
    • Blanket permits must have valid insurance or a valid U.S. DOT number; if insurance expires or cancels, the blanket permit becomes invalid.
    • Overweight charges apply to weight exceeding 80,000 pounds or specified axle limits.

    oversize permit fee: 10 USD · oversize blanket fee: 100 USD · 72-hour legal trip permit fee: 25 USD · harvest permit fee: 25 USD · port permit fee: 170 USD per year · pole blanket fee: 200 USD

    “Oversize permit $10.00 Oversize Blanket $100.00”
    One more reviewed finding on this topic
    • Published (with conditions) — Mississippi State Department of Health on-site wastewater application fees applicable to Simpson County.
      “Notice of Intent + Final Approval is currently $197.50 Existing Residential Inspection is currently $100 Subdivision is currently $325 + $6.50/lot Online payment will be subject to a processing fee. All fees are subject to change.”
  • Permit processPartial

    Mississippi local permitting for businesses and business-related construction or land development.

    • Permits may be required from city or county governments.
    • Different locations have different requirements.
    • Building permits generally come from the city or county building and planning department for constructing or modifying a place of business.
    • Zoning permits generally come from the city or county building and planning department for developing land for specific commercial use.
    “You may be required to apply for permits and licenses from your local government (e.g., city or county). Different locations have different requirements.”
  • Campground & park staysLimited

    Recreational-vehicle occupancy at campgrounds under the jurisdiction of the Pearl River Valley Water Supply District, including Coal Bluff, Goshen Springs, Leake County Water Park, Low Head Dam, and Timberlake.

    • The rules apply within all campgrounds under the District’s jurisdiction.
    • Campgrounds are not intended to be permanent domiciles for campground guests.
    • A recreational vehicle must be in operable road-worthy condition, properly registered and insured in its domicile state or province, with a current license plate affixed.
    • Campers may not stay on any pad longer than 12 consecutive months; Standard Plus campers may move to another available pad after 12 months, but the District is not responsible for making a pad available.
    • Campsites are typically designed for trailers or recreational vehicles no longer than 32 feet or wider than 8 feet, subject to the stated RVIA-seal, holding-tank, facility-capacity, and prohibited-unit conditions.
    • Primitive camping areas without water, electricity, or sewer are not intended for recreational vehicles.
    • No permanent structures may be erected on a campsite; temporary accessibility stairs, stoops, steps, or ramps require the stated approvals and size limits.
    • Camping is confined to designated campground or overflow areas, and no more than one camping unit is allowed per pad without Campground Manager approval.

    maximum stay on one pad: <= 12 consecutive months (Campers may move to a different available pad after 12 months.) · typical campsite RV length: <= 32 feet (Larger units may be accepted if they satisfy the stated RVIA seal, holding-tank, and facility-capacity conditions.) · typical campsite RV width: <= 8 feet (Larger units may be accepted if they satisfy the stated RVIA seal, holding-tank, and facility-capacity conditions.)

    “Campers shall not stay on any pad longer than 12 consecutive months”
    One more reviewed finding on this topic

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • County-wide zoning — Countywide zoning authority in Simpson County, including unincorporated areas.
  • Local zoning — Aggregate local zoning across Simpson County municipalities and unincorporated areas.
  • Zoning districts — Published zoning districts in Simpson County.
  • Minimum dwelling size — Minimum dwelling size in Simpson County.
  • Minimum lot size — Minimum lot size in Simpson County.
11 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Agricultural exemption
  • Subdividing land
  • Short-term rentals

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.

Living off-grid in Simpson County, Mississippi

Is Simpson County a good place to live off-grid or homestead?

Simpson County scores 66/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and strong self-sufficiency basics: 58.8″/yr rainfall plus 76.1% wooded land. Watch-outs: a weaker property-autonomy legal backdrop.

Do you need a building permit in Simpson County, Mississippi?

Simpson County generally requires a residential building permit. Onsite septic is permitted by Mississippi State Department of Health (On-Site Wastewater program). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Simpson County, Mississippi?

Land in Simpson County runs about $3,201 per acre, based on the latest county data.

What is the water situation in Simpson County?

Simpson County gets about 58.8" of rain a year, with severe drought in roughly 4.5% of years.

How remote is Simpson County?

A representative private-land location has about 40,360 people within a 30-minute drive and 1,429,147 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

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

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How Simpson compares in Mississippi

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