Bolthole Index

Forrest County, Mississippi

Building permits, zoning and septic rules in Forrest County, Mississippi

64Index Score / 100
#68 of 82 in Mississippi

Forrest County, Mississippi does not administer building codes or issue certificates of occupancy, but the available county material does not confirm whether another residential permit or inspection requirement applies1. Before developing unincorporated land, contact the Forrest County Planning Department about stormwater, floodplain, and subdivision review2. Septic permits come from the Mississippi State Department of Health34.

At a glance

Building permit
The county does not administer building codes or certificates of occupancy; any other permit requirement is unconfirmed1
Zoning
Not confirmed for unincorporated land; ask the Planning Department about the parcel5
Septic permit
Required through the Mississippi State Department of Health34
RV or tiny home
Residential occupancy rules are unconfirmed, and all wastewater must go to sewer or septic56
Owner-builder
A state licensing exemption applies when an owner oversees qualifying construction on their own property7
Land division
County subdivision review can apply when unincorporated land is divided into four or more lots8
Well permit
A state groundwater withdrawal permit generally starts at a 6-inch surface casing9

Who to call

Planning & zoning

Forrest County Planning Department

Stormwater, floodplain development and subdivision ordinance compliance for unincorporated Forrest County; does not issue building permits or certificates of occupancy

(601) 545-6000

641 N Main Street, Hattiesburg, MS 39401

Septic permits

Mississippi State Department of Health – Division of On-Site Wastewater

Septic (individual on-site wastewater disposal system) permits, soil and site evaluations, and well-water sampling for Forrest County

1-855-220-0192

570 East Woodrow Wilson Drive, Jackson, MS 39216

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

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

Forrest County's Planning Department does not administer building codes or issue certificates of occupancy1. The available official material does not expressly settle whether a residential building permit or inspection is required through another authority, so ask Planning before treating an unincorporated parcel as permit-free1. Mississippi required counties and municipalities to enact uniform building codes unless they opted out before November 30, 2014, but the reviewed source does not establish whether Forrest County opted out10. County development controls still apply: Forrest County has stormwater, floodplain development, and subdivision ordinances, and Planning asks owners to contact the office before development begins2.

Who handles development review in Forrest County, and how do you reach them?

The Forrest County Planning Department is the first stop for development on unincorporated land because it handles compliance with the county's stormwater, floodplain development, and subdivision ordinances2. The office is at 641 N Main Street in Hattiesburg and can be reached at (601) 545-60002. For land disturbance up to 0.9 acre, the stormwater rules currently require notification to Planning but not a permit or stormwater pollution prevention plan11. Disturbing 1 to 5 acres requires a county stormwater permit, Notice of Intent, and stormwater pollution prevention plan; disturbing more than 5 acres sends the permit package to the Mississippi Department of Environmental Quality, with a copy to county Planning11.

Does Forrest County have zoning?

We could not confirm a countywide zoning ordinance for unincorporated Forrest County5. The Planning Department identifies stormwater, floodplain development, and subdivision ordinances, but that list does not answer parcel-specific questions about RV occupancy, tiny homes, setbacks, minimum home size, or accessory dwellings25. Ask Planning about the parcel and proposed use before buying or placing a structure. Unincorporated land divisions can trigger a separate rule even without a confirmed zoning answer: dividing land into four or more lots for sale, lease, rental, conveyance, or building development falls under the county subdivision ordinance8. An agricultural division is exempt from that ordinance only when it does not involve construction of new roads or streets12.

How do septic permits work in Forrest County?

The Mississippi State Department of Health's Division of On-Site Wastewater handles septic regulation, technical review, and inspection for Forrest County3. A permit is required to install an onsite wastewater disposal system4. A permanent water meter also requires a permanent sewage-disposal solution, either public sewer or septic13. When a property is within 1 mile of a sewer line, the state refers the application for connection; if the sewer provider will not serve the parcel, obtain its rejection letter before the state proceeds with a septic application13. Current online fees include $197.50 for a residential Notice of Intent plus final approval and $100 for a residential Notice of Intent plus exemption, with processing fees and possible additional offline costs14. About 34% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation an early contingency15.

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

We could not confirm a Forrest County rule that allows or prohibits residential RV or tiny-home occupancy on private land5. Ask the Planning Department about the exact parcel and use before purchasing or moving a unit onsite. Sanitation is clearer: Mississippi does not treat gray water as a separate waste stream, and all wastewater must be piped to a central sewer or septic system rather than discharged onto the ground, into a ditch, or into water6. A local authority may allow temporary use of a portable toilet while septic is installed, but that temporary decision is outside the state health department's jurisdiction6. Mobile-home and modular-home parks can also fall within the county's subdivision ordinance8.

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

  1. Ask the Forrest County Planning Department whether another authority requires a residential permit or inspection and whether parcel-specific zoning rules apply15.
  2. Tell Planning how much land you will disturb so it can route the stormwater notification or permit correctly11.
  3. Check flood status with Planning because Forrest County has a floodplain development ordinance, although the available source does not state its procedure or exceptions16.
  4. Apply to the state On-Site Wastewater program for the required septic approval, resolving public-sewer availability first413.
  5. If the project divides unincorporated land into four or more lots, submit the required survey, plat, improvement plans, and ownership abstract to the Board of Supervisors8.
  6. Obtain a state driveway permit if access connects to a state highway17.

What to check before you buy land in Forrest County

Confirm wastewater service before closing because a permanent water meter depends on an approved sewer or septic solution13. Check soils early: about 34% of Forrest County soils are rated without severe limits for a conventional drain field, so many parcels may require closer evaluation or a different design15. Ask Planning whether the land is affected by the county floodplain development ordinance and what approval the proposed work requires16. If you plan to divide the tract, remember that four or more lots can trigger platting and improvement-plan review, while the agricultural exemption is limited to divisions without new roads or streets812. A state groundwater withdrawal permit generally applies to a well with surface casing 6 inches or larger, subject to exclusions9. The median property-tax bill is about $1,284 a year at an effective rate near 0.8%1819.

Watch-outs

  • Do not equate the county's lack of building-code administration with a confirmed exemption from every permit or inspection; ask Planning which authority, if any, applies to the project1.
  • A permanent water meter requires an approved sewer or septic solution, and parcels within 1 mile of sewer may need a sewer-provider rejection letter before a septic application can proceed13.
  • Even small land disturbances must be reported to Planning, while larger disturbed areas require county or state stormwater filings11.

Sources

  1. Forrest County, MS Planning Department (2026 county census)
  2. Forrest County Planning Department (forrestcountyms.us)
  3. On-Site Wastewater - Mississippi State Department of Health, quoted and re-checked
  4. Wastewater Frequently Asked Questions, quoted and re-checked
  5. (2026 county census)
  6. Wastewater Frequently Asked Questions, quoted and re-checked
  7. Mississippi Code 73-59-15 (Persons and matters exempt) (2026 county census)
  8. Ordinance Governing the Development of Land and Prescribed Minimum Standards for the Design and Construction of Roads and Streets, quoted and re-checked
  9. Guidelines for Securing the Services of a Water Well Driller (Mississippi statewide rule), quoted and re-checked
  10. Mississippi Uniform Building Codes, quoted and re-checked
  11. Forrest County Stormwater Ordinance, quoted and re-checked
  12. Ordinance Governing the Development of Land and Prescribed Minimum Standards for the Design and Construction of Roads and Streets, quoted and re-checked
  13. Wastewater Frequently Asked Questions, quoted and re-checked
  14. Wastewater Frequently Asked Questions, quoted and re-checked
  15. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  16. Forrest County Planning Department, quoted and re-checked
  17. Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
  18. Median property tax bill: Bolthole Index county data
  19. Effective property tax rate: Bolthole Index county data

Written September 29, 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

Forrest County in Mississippi

64
County map
Forrest County highlighted among the Mississippi counties · colored by Index score

How Forrest County scores

Seclusion36100% ev.
Self-Sufficiency72100% ev.
Admin Boringness7577% ev.
Durability57100% ev.
Property Autonomy39100% ev.
Carry Cost81100% 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 →

$191kTypical home
0.8%Property tax
$5,040Land / acre
62.1"Annual rain
6.1% of yrsSevere drought
15 / yr (+13.5)Mid-century 100°F days
16.9 daysMid-century dry spell
3.14" (+7.2%)Mid-century 1-day rain
1.38×Wildfire change factor
100%Forward climate coverage
$2,132Home insurance / yr
-0.3% / yrInsurance growth
1.52%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
148,839People within 30 min
3,113,646People within 2 hr
106,265Radius comparison (15 mi)
167.8People / sq mi
20.4%Federal land
85.4%Land at 15% slope or less
34%Septic soil without severe limits
98,986 acWorkable land screen
79.8%Wooded land
43.5 tonsBiomass / forest ac
66.1°FAvg temp

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Answers from the rulebook for Forrest County

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

Forrest County rules

  • Agricultural exemptionAvailable (with conditions)

    Agricultural divisions of land under the Forrest County subdivision ordinance.

    • The exemption applies only when the agricultural division does not involve construction of new roads or streets.
    • Other state, county, municipal, health, wastewater, floodplain, or utility requirements may still apply.
    “when such division does not involve the construction of new roads or streets.”
  • Subdividing landRegulated (with conditions)

    Division of land outside the corporate limits of a city or town into four or more lots, plats, sites, or other divisions for rental, lease, sale, conveyance, or building development.

    • The ordinance applies to subdivisions including single-family residential developments, modular and mobile home parks, re-subdivisions, and improvement of existing roads and streets.
    • Agricultural divisions are exempt when they do not involve construction of new roads or streets.
    • The land must be surveyed and platted by an engineer or land surveyor, and the plat and improvement plans must be submitted to the Forrest County Board of Supervisors with an abstract of title showing fee-simple ownership.
    • The ordinance was adopted effective March 5, 2011.

    minimum lots triggering subdivision definition: >= 4 lots (also covers other divisions for rental, lease, sale, conveyance, or building development)

    “land into four or more lots, plats, sites or other divisions of land”
  • Building in a floodplainLimited

    Development subject to the Forrest County floodplain development ordinance.

    • The official county planning page confirms that a floodplain development ordinance exists.
    • The opened source did not provide the ordinance’s numeric limits, permit procedure, or exceptions.
    “we do have a stormwater ordinance, floodplain development ordinance and subdivision ordinance.”
  • Permit processPartial

    Forrest County stormwater permitting for development in the county.

    • For land disturbance from 0 to 0.9 acre, no permit or SWPPP is currently required, but notification to the Planning Department is required.
    • For 1 to 5 acres disturbed, a county stormwater permit, Notice of Intent, and SWPPP must be submitted to the Forrest County Planning Department.
    • For more than 5 acres disturbed, a permit, SWPPP, and CNOI must be submitted to MDEQ, with a copy to the county planning department.
    • The source addresses stormwater permitting only, not all county permits.

    land disturbance threshold: <= 0.9 acre (notification required) · land disturbance range: 1-5 acres (county permit, CNOI, and SWPPP required) · land disturbance threshold: > 5 acres (MDEQ permit, SWPPP, and CNOI required; copy to county)

    “1-5 Acres of land disturbed: Permit required from Forrest County Planning Department”
  • Building permitNot required

    The Forrest County Planning Department states it does not issue certificates of occupancy or administer building codes; the county regulates development through stormwater, floodplain, and subdivision ordinances rather than county building permits in unincorporated areas.

    Forrest County, MS Planning Department ↗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

    Uniform building-code adoption by Mississippi counties and municipalities, including Forrest County unless it timely opted out.

    • All counties and municipalities must enact uniform building codes unless they opted out before November 30, 2014.
    • The opened official source does not establish whether Forrest County opted out.

    opt-out deadline: 2014-11-30

    “all counties and municipalities must enact uniform building codes unless they opt out prior to Nov. 30, 2014.”
    One more reviewed finding on this topic
    • Partial — Mississippi counties and municipalities subject to the statewide uniform-building-code framework.
      “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 individual water supplies in Forrest County.

    • The Mississippi State Department of Health Division of On-site Wastewater identifies Forrest County within its South Region.
    • The program provides policy, regulation, technical assistance, design review, and inspection functions.
    “The On-site Wastewater program develops policy and regulations”
    One more reviewed finding on this topic
    • 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

    Installation of an on-site wastewater disposal system and obtaining a permanent water meter in Forrest County.

    • A permit is required for installation of an on-site wastewater disposal system.
    • A permit is required for a water meter.
    • Where public sewer is available, the sewer system has first right to provide service and MSDH may require a sewer-provider rejection letter before proceeding with a septic application.
    “installation of an on-site wastewater disposal system.”
  • Off-grid sanitationLimited

    Sanitation for properties in Forrest County without public sewer.

    • Mississippi does not recognize gray water as a separate disposal category.
    • All wastewater must be piped into a central sewer system or septic system for proper disposal.
    • Gray water may not be discharged on the ground, in ditches, or in bodies of water.
    • A local authority may allow temporary use of a port-a-potty until septic installation, but MSDH does not have jurisdiction over that temporary option.
    “Mississippi does not recognize gray water.”
  • 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

    Permanent water-meter connection in Forrest County where onsite wastewater or sewer service is involved.

    • A permanent sewage-disposal solution must be available before a permanent water meter can be issued.
    • The solution may be a sewer line or septic system.
    • If public sewer is available, the sewer system has first right to provide service and MSDH refers applications within one mile of a sewer line to connect.
    • A sewer-provider Letter of Rejection is required before MSDH proceeds with a septic application.

    sewer referral distance: <= 1 mile (applications within one mile of a sewer line)

    “permanent sewage disposal solution available to receive a permanent water meter.”
    One more reviewed finding on this topic
    • Conditional — Public water connections and connection to centralized wastewater treatment systems for residences, buildings, and facilities in Mississippi.
      “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”
  • 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;”
  • Permit feesPublished (with conditions)

    Mississippi State Department of Health onsite-wastewater applications used in Forrest County.

    • Online payment is subject to a processing fee.
    • All fees are subject to change.
    • Additional costs may apply if online application is not used.

    Notice of Intent plus Final Approval: 197.5 USD · Notice of Intent plus Exemption: 100 USD · Existing Residential Inspection: 100 USD · Private Water Well Sample: 10 USD · Commercial Establishment plus Final Approval: 412.5 USD · Existing Commercial Establishment: 315 USD · Commercial Development: 412.5 USD (plus $2.60 per unit; unit may be an apartment, house, trailer, RV, or other independent single-family quarter) · Subdivision: 325 USD (plus $6.50 per lot)

    “Subdivision is currently $325 + $6.50/lot”
    One more reviewed finding on this topic
  • 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 Forrest County, especially unincorporated areas.
  • Local zoning — Aggregate municipal and unincorporated local zoning in Forrest County.
  • Zoning districts — Published zoning districts in Forrest County.
  • Minimum dwelling size — Minimum dwelling size in Forrest County.
  • Minimum lot size — Minimum lot size in Forrest County.
9 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • 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 Forrest County, Mississippi

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

Forrest County scores 64/100 on the Bolthole Index, a strong county profile. Its strengths: manageable long-term carry cost and low administrative friction for a quiet rural property. Watch-outs: about 148,839 people within a 30-minute drive and a weaker property-autonomy legal backdrop.

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

Forrest County does not require a county building permit for a home in unincorporated areas. Onsite septic is permitted by Mississippi State Department of Health (MSDH), Division of On-Site Wastewater. 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 Forrest County, Mississippi?

Land in Forrest County runs about $5,040 per acre, based on the latest county data.

What is the water situation in Forrest County?

Forrest County gets about 62.1" of rain a year, with severe drought in roughly 6.1% of years.

How remote is Forrest County?

A representative private-land location has about 148,839 people within a 30-minute drive and 3,113,646 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 Forrest County means bringing your own water and power. The kit we’d start with:

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How Forrest compares in Mississippi

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