Harrison County, OH Building Permits, Zoning & Septic

Harrison County, Ohio requires a county building permit for new construction and additions over 600 square feet outside a village¹. The Harrison County Commissioners are the contact for that permit, while the Harrison County Health Department handles household septic permits and inspections²³. Harrison County does not have countywide zoning, but five townships or villages publish local zoning, so the parcel's jurisdiction matters⁴⁵.

At a glance

Building permit: Required for new construction and additions over 600 square feet outside a village¹
Building permit office: Harrison County Commissioners²
Zoning: No countywide zoning; Archer Township, Cadiz Village, Freeport Township, Moorefield Township and North Township have local zoning⁴⁵
Septic permits: Required through the Harrison County Health Department³⁶
Private wells: An Ohio board of health permit is required before most private-well work begins⁷
RV / tiny home living: No countywide rule was confirmed; ask the applicable township or village and the county building office⁴¹
Owner-builder exemption: Not stated in the county's published building-permit materials⁸
Septic soil difficulty: Only 0.4% of county soils lack severe limits for a conventional drain field⁹

Who to call

Building permits

Harrison County Commissioners

County building-permit questions for new construction and additions outside villages

740-942-4623

Zoning

Harrison County zoning information

Published contacts for Harrison County townships and villages with local zoning

Septic permits

Harrison County Health Department

Household sewage treatment system plan review, installation permits and inspections

(740) 942-2616

538 N Main St, Cadiz, OH 43907

Contact details are copied from each office’s official page and were checked against it on September 27, 2026.

Do you need a building permit in Harrison County, Ohio?

Yes, for the work covered by Harrison County's published rule: new construction and additions over 600 square feet outside a village require a county building permit before construction starts¹. Ohio requires plan submission before covered work begins where a certified municipal, township or county building department has jurisdiction¹⁰. Permit fees charged by a certified Ohio building department come from its locally adopted fee schedule¹¹. The county materials do not state an owner-builder exemption, so a person planning to act as the builder should ask the Harrison County Commissioners whether that changes any application, inspection or contractor requirements⁸². A qualifying agricultural structure has a separate route: an Ohio county or township zoning inspector may issue a certificate declaring that the structure will be used in agriculture, which triggers the statutory exemption described by state law¹².

Who handles Harrison County building permits, and how do you reach them?

The Harrison County Commissioners are the county contact for building-permit questions, at 740-942-4623². The county rule applies to new construction and additions over 600 square feet outside a village, so first confirm whether the parcel is inside a village and whether the proposed work crosses that threshold¹. Ohio's process for covered buildings calls for plans, drawings, specifications and supporting data to go to the building department that has jurisdiction before work begins¹³. Once plan approval has been issued, the building official directs the necessary inspections to compare completed work with the approved construction documents¹⁴. Because Ohio jurisdiction can sit with a municipality, township or county, village property owners should ask the relevant village which certified department reviews their project rather than assuming the county office does¹⁰.

Does Harrison County have zoning?

Harrison County does not have countywide zoning, but the county identifies local zoning in Archer Township, Cadiz Village, Freeport Township, Moorefield Township and North Township⁴⁵. A parcel in one of those jurisdictions may therefore face local use, dimensional or siting rules even though there is no single countywide zoning ordinance⁴⁵. Ohio law allows county commissioners to regulate land use in unincorporated territory through a zoning resolution, and separate Ohio law also allows county residential building regulation; zoning and building permits are therefore different questions¹⁵¹⁶. Harrison County's reviewed material does not confirm one countywide minimum lot size, setback, lot-coverage limit or building-height limit, so ask the applicable township or village zoning contact about the parcel before designing the site⁴.

How do septic permits work in Harrison County?

The Harrison County Health Department reviews plans, issues installation permits and inspects residential septic systems under Ohio's sewage rules¹⁷³. A new or altered household system requires a site and soil evaluation, a system design, an application and the associated fee, and work cannot begin until the Permit to Install or Alter is issued⁶. The county requires a registered sewage-system installer, and Health Department inspectors inspect construction before the system is covered with soil⁶¹⁸. Soil planning deserves an early start because only 0.4% of Harrison County soils are rated without severe limitations for a conventional drain field⁹. If a public or regional sanitary sewer is accessible and available under Ohio's rule, connection may be required instead of onsite disposal¹⁹. Call the Health Department at (740) 942-2616 before relying on a house location or septic concept¹⁷.

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

We could not confirm a countywide Harrison County rule for living in an RV on private land, temporary camping, tiny-home occupancy or accessory dwellings. The practical first call depends on location: ask the zoning contact if the parcel lies in Archer Township, Cadiz Village, Freeport Township, Moorefield Township or North Township, and ask the Harrison County Commissioners about any building-permit requirement⁵². Ohio's campground rule governs RV placement in licensed campgrounds, but it does not answer whether someone may occupy an RV on a private Harrison County parcel²⁰. A manufactured home is also distinct from an RV: Ohio generally bars occupancy until an inspector issues the required inspection seal, subject to the temporary-occupancy exception in the state rule²¹. Any occupied dwelling still needs a lawful wastewater solution, and a new or altered household septic system requires Health Department approval before installation begins⁶.

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

Confirm whether the parcel is outside a village and whether it lies in Archer Township, Cadiz Village, Freeport Township, Moorefield Township or North Township, because permit jurisdiction and local zoning depend on location¹⁵.

Ask the applicable zoning contact about use, setbacks and lot standards; Harrison County's reviewed material does not establish one countywide dimensional table⁴.

Arrange the septic site and soil evaluation and system design, then submit the application and fee to the Harrison County Health Department before installation⁶.

If the home will use a private well, obtain the board of health permit required by Ohio before most construction or alteration work begins⁷.

Apply to the Harrison County Commissioners before starting covered new construction or an addition over 600 square feet outside a village¹².

Schedule the required building and septic inspections, including septic inspection before the system is covered¹⁴¹⁸.

What should you check before buying land in Harrison County?

Start with wastewater feasibility: only 0.4% of Harrison County soils are rated without severe limitations for a conventional drain field, so obtain a site-specific evaluation before treating a listing as buildable⁹. Terrain compounds that issue because only 26.8% of county land is at a slope of 15% or less, while 59.4% is wooded²²²³. Confirm road access with the County Engineer for a county or township road or with the state for a state or U.S. route; the county's reviewed material mentions a driveway right-of-way permit but does not establish its operative conditions. Check flood status before choosing a house site, because Harrison County requires a floodplain permit for construction in a special flood-hazard area¹. Finally, budget carrying costs: the effective property-tax rate is about 1%, and the median property-tax bill is about $1,226 per year²⁴²⁵.

Watch-outs

Do not read 'no countywide zoning' as 'unrestricted': five Harrison County townships or villages publish local zoning, and parcel-specific rules must be checked there⁴⁵.
Only 0.4% of Harrison County soils are rated without severe limits for a conventional septic drain field, so make the soil and site evaluation an early contingency⁹.
Harrison County's published material does not state an owner-builder exemption, so confirm the current application and inspection requirements with the Commissioners before self-building⁸².

Sources

Written September 27, 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.

How Harrison County scores

Seclusion40100% ev.

Self-Sufficiency57100% ev.

Admin Boringness5890% ev.

Durability83100% ev.

Property Autonomy35100% ev.

Carry Cost77100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$146kTypical home

1%Property tax

$5,421Land / acre

41.7"Annual rain

2.7% of yrsSevere drought

2.3 / yr (+2.3)Mid-century 100°F days

10.9 daysMid-century dry spell

1.58" (+6.2%)Mid-century 1-day rain

1.82×Wildfire change factor

100%Forward climate coverage

$1,126Home insurance / yr

1.4% / yrInsurance growth

2.2%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

32,905People within 30 min

7,069,540People within 2 hr

56,784Radius comparison (15 mi)

35.2People / sq mi

0.7%Federal land

26.8%Land at 15% slope or less

0.4%Septic soil without severe limits

898 acWorkable land screen

59.4%Wooded land

50.8 tonsBiomass / forest ac

51.2°FAvg temp

Answers from the rulebook for Harrison County

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

Harrison County rules

Who permits septicMixed (with conditions)
Household sewage treatment systems in Harrison County.
- The Harrison County Health Department issues permits and performs inspections.
- The program operates in accordance with Ohio Department of Health regulations, OAC Chapter 3701-29.
- A completed application and associated fee are required for site review.
“The Harrison County Health Department reviews plans, issues installation permits, and inspects all residential septic systems in accordance with Ohio Department of Health regulations (OAC Chapter 3701-29).”
Sewage & Septic Systems ↗Re-checked Sep 26, 2026
Septic permitRequired
Installation or alteration of household sewage treatment systems in Harrison County.
- A site and soil evaluation, system design plan, application, and fee must be submitted.
- Work cannot begin until the Permit to Install or Alter is issued.
- Installation must be performed by a registered sewage system installer.
“Submit the completed soil evaluation, design blueprint, application form, and fee to our Environmental Health division. [...] Once approved, we issue an official Permit to Install or Alter. (Work cannot begin until this permit is issued!)”
Sewage & Septic Systems ↗Re-checked Sep 26, 2026
Septic inspectionRequired
Residential septic systems during construction in Harrison County.
- Health Department inspectors perform on-site inspections during construction before the system is covered with soil.
“Our inspectors perform on-site inspections during construction before the system is covered with soil.”
Sewage & Septic Systems ↗Re-checked Sep 26, 2026
County-wide zoningAbsent
There is no countywide zoning; only certain townships/villages (Archer, Cadiz, Freeport, Moorefield, North) have their own zoning.
Harrison County Zoning ↗Scouted from the county site, not yet independently re-checked

Ohio rules that apply here

Building permitRequired
Construction, erection, manufacture, equipment, alteration, or addition of buildings subject to Ohio Revised Code section 3781.06, including industrialized units, statewide.
- Plans or drawings, specifications, and data must be submitted before beginning the work.
- Submission is made to the municipal, township, or county building department having jurisdiction.
- If no certified municipal, township, or county building department certified for nonresidential buildings has jurisdiction, submission is made to the superintendent of industrial compliance.
- If no certified municipal, township, or county building department certified for residential buildings has jurisdiction, the owner is not required to make the submission described in division (A)(1).
“No owner shall proceed with the construction, erection, alteration, or equipment of any building until the plans or drawings, specifications, and data have been approved as this section requires, or the industrialized unit inspected at the point of origin.”
Section 3791.04 | Submission of plan - approvals - prohibition - fine ↗Re-checked Sep 12, 2026
Building code adoptedAdopted (with conditions)
Buildings and classes of buildings regulated under Ohio Revised Code Chapter 3781, including residential and nonresidential buildings and industrialized units.
- The Ohio Board of Building Standards formulates and adopts separate residential and nonresidential building codes.
- Residential-code requirements are uniform in areas with a building department certified to enforce the state residential building code.
- A local code or regulation may differ from the state residential building code only when it addresses subject matter not addressed by the state residential building code or is adopted pursuant to Ohio Revised Code section 3781.01.
- Enforcement authority is exercised by certified municipal, township, and county building departments or other certified personnel as provided by law.
“The board of building standards shall formulate and adopt rules governing the erection, construction, repair, alteration, and maintenance of all buildings or classes of buildings specified in section 3781.06 of the Revised Code, including land area incidental to those buildings, the construction of industrialized units, the installation of equipment, and the standards or requirements for materials used in connection with those buildings. The board shall incorporate those rules into separate residential and nonresidential building codes.”
Section 3781.10 | Board of building standards - powers and duties ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Adopted (with conditions) — Residential construction governed by the Residential Code of Ohio statewide, including Harrison County where a certified building department has jurisdiction.
  “Chapters 4101:8-1 to 4101:8-25, 4101:8-29, 4101:8-34, and 4101:8-44 of the Administrative Code are designated as the “Residential Code of Ohio for One-, Two-, and Three-Family Dwellings””
  Residential Code of Ohio Administration ↗Re-checked Sep 26, 2026
InspectionsRequired
Building work subject to Ohio building-code enforcement after certificate of plan approval, and inspections initiated after complaints, accidents, or natural disasters.
- Inspections are directed after a certificate of plan approval has been issued, or after a complaint, accident, or natural disaster.
- The building official identifies special conditions affecting inspection timing and schedules inspection times mutually agreed upon by the building official and owner.
- Special inspections required under section 1704 of rule 4101:1-1-01 are excepted from the stated scheduling rule.
- Certified inspectors inspect work within the limits of their certification and the approved construction documents.
“Once a certificate of plan approval has been issued in accordance with rule 4101:1-1-01 or 4101:8-1-01 of the Administrative Code, or upon receipt of a complaint or occurrence of an accident or natural disaster, the building official directs necessary inspections and investigations to determine whether the work which has been performed and the installations which have been made are in conformity with the approved construction documents.”
Rule 4101:7-3-02 | Building department personnel duties and responsibilities ↗Re-checked Sep 12, 2026
Manufactured homesLimited
Occupancy of manufactured homes installed in Ohio and regulated under Chapter 4781 of the Revised Code and implementing rules.
- A manufactured home generally may not be occupied until the inspector issues the inspection seal.
- The inspection seal must be paid for when the permit is issued.
- A temporary occupancy permit may provide the applicable exception under Rule 4781-7-01(C).
- The home must meet Ohio manufactured-home installation standards; local ordinances and other regulations may also apply to site placement.
“Except as provided in paragraph (C) of this rule, no manufactured home shall be occupied until the inspector has issued the inspection seal.”
Chapter 4781-7 | Manufactured home inspections ↗Re-checked Sep 12, 2026
Well permitRequired
Construction, alteration, sealing, or decommissioning of private water systems, including private wells and test wells, in Ohio.
- A valid permit must be issued by the board of health before construction, alteration, or sealing, except that a person sealing a well or decommissioning a private water system not being replaced must apply no later than five business days afterward.
- Except where specified exceptions apply, no work may begin until the permit is issued and approved.
- Applications require the applicable permit fee, required information, and a fee for at least one water sample for alteration, conversion, or new construction.
- An application becomes a permit upon validation by the local health district.
- Plans are additionally required for specified systems, including systems serving a building, non-one/two/three-family dwellings, cisterns, springs or ponds, flowing-well areas, drive-point wells, buried pressure tanks, gasoline-powered pumps, continuous disinfection or filtration, and certain point-of-entry treatment systems.
post-sealing/decommissioning application deadline: <= 5 business days (Applies when the well or private water system is not being sealed or decommissioned because it is being replaced.)
“No person shall construct, alter or seal a private water system, test well or part thereof, unless a valid permit for the system has been issued”
Chapter 3701-28 | Private water systems ↗Re-checked Sep 12, 2026
Mandatory utility hookupSewer (with conditions)
Disposal of sewage where an existing publicly owned or regional sanitary sewer is accessible and available.
- The sewer connection may not conflict with an areawide waste-treatment plan, approved regional sewage-service and treatment plan, or connection ban.
- The receiving disposal system must have or be expected to have capacity to collect and treat the sewage.
- For an existing structure, any part of the structure generating waste must be within 300 feet of the nearest sanitary-sewer right-of-way boundary.
- For a proposed structure outside a larger common plan, any lot property line must be within 300 feet.
- For two or more proposed structures, the threshold is 200 feet multiplied by the number of proposed structures, up to 5,000 feet.
- The director may grant an exemption when technical, financial, environmental, legal, or physical barriers prevent connection and the alternative will not adversely affect human health or the environment.
- When a sewer later becomes accessible and available, a non-public or non-regional disposal system must generally be abandoned and connection made within three years unless the director authorizes another timeframe.
existing structure sewer-distance threshold: <= 300 feet (Measured to the nearest boundary of the sanitary-sewer right-of-way.) · proposed structure sewer-distance threshold: <= 300 feet (Measured from any property line of the lot.) · multiple proposed structures threshold: 200 feet multiplied by the number of proposed structures (Maximum distance is 5,000 feet.) · connection deadline after accessibility becomes available: 3 years (Unless an alternative timeframe is authorized by the director.)
“Connection into existing publicly owned or regional sanitary sewers is required for the disposal of sewage when said sewers are accessible and available.”
Rule 3745-42-07 | Best available technology for connection into sanitary sewers and centralized collection and treatment ↗Re-checked Sep 12, 2026
Agricultural exemptionConditional
Buildings or structures incident to agricultural use of the land, and a specific building or structure declared by a county or township zoning inspector to be used in agriculture.
- The exemption in section 3781.06 applies to buildings or structures incident to agricultural use of the land.
- The buildings or structures must not be used in the business of retail trade.
- A building or structure is not considered used in the business of retail trade if fifty per cent or more of gross income from sales of products in the building or structure comes from products produced or raised in a normal crop year on farms owned or operated by the seller.
- Under section 3781.061, a county zoning inspector under section 303.16 or township zoning inspector under section 519.16 must issue a zoning certificate declaring the specific building or structure is to be used in agriculture for the additional exemption described there.
- The cited section 3781.06 is effective January 1, 2025; section 3781.061 is effective October 17, 2019.
retail-sales agricultural-product threshold: >= 50 percent of gross income (Products must be produced or raised in a normal crop year on farms owned or operated by the seller.)
“issues a zoning certificate that declares a specific building or structure is to be used in agriculture, such building is not subject to sections”
Section 3781.06 | Public buildings to be safe and sanitary - definitions ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Available (with conditions) — Buildings or structures used for agriculture in Ohio, including Harrison County.
  “Whenever a county zoning inspector under section 303.16 of the Revised Code, or a township zoning inspector under section 519.16 of the Revised Code, issues a zoning certificate that declares a specific building or structure is to be used in agriculture, such building is not subject to sections 3781.06 to 3781.20, 3781.40, or 3791.04 of the Revised Code.”
  Section 3781.061 | Exemption for building or structure used in agriculture ↗Re-checked Sep 26, 2026
Subdividing landRegulated (with conditions)
Subdivision and platting of land in Ohio, including divisions of parcels and plats outside municipal corporations.
- A subdivision includes division of a parcel into two or more parcels, sites, or lots when any one is less than five acres for immediate or future transfer of ownership.
- A division or partition into parcels of more than five acres is exempt when it does not involve new streets or easements of access.
- A sale or exchange between adjoining lot owners is exempt when it does not create additional building sites.
- A planning authority may adopt a rule under section 711.133 exempting parcels of four acres or more within the size range delineated in that rule.
- Improvement of land involving division or allocation for opening, widening, or extension of public or private streets, or for common open spaces or utility easements, is also included in the statutory subdivision definition.
- No plat certifying lands outside a municipal corporation may be recorded without approval by the board of county commissioners, except where approval is required from a planning commission under sections 711.09 or 711.10.
- The cited section 711.001 states an effective date of July 1, 2010; the cited section 711.041 states an effective date of October 6, 1955.
subdivision parcel threshold: < 5 acres (The statutory definition applies when any resulting parcel, site, or lot is less than five acres.) · exempt parcel size: > 5 acres (Division or partition into parcels of more than five acres is exempt if no new streets or easements of access are involved.) · possible planning-authority exemption threshold: >= 4 acres (Only if the planning authority adopts a rule under section 711.133 and only within the size range delineated in that rule.)
“No plat certifying lands outside a municipal corporation may be recorded without the approval thereon of the board of county commissioners”
Section 711.001 | Plat definitions ↗Re-checked Sep 12, 2026
Permit feesPublished (with conditions)
Construction documents and inspections required to be submitted to the Ohio Division of Industrial Compliance.
- The certificate of occupancy or certificate of completion will not be issued until applicable fees are paid.
- The schedule includes a $275 processing fee for structural, mechanical, electrical, fire alarm, and sprinkler scopes; plan-examination fees vary by scope and area or device count.
- One initial plan review and up to two resubmission plan reviews are included; additional resubmissions cost $100 each.
- Additional inspections cost $150 per inspection; reinspections cost $150.
- Certificates of occupancy or completion cost $65, except existing-building certificates issued under rule 111.4 have no fee.
- The rule was effective January 1, 2019 and was last updated July 14, 2026.
structural processing fee: 275 USD · certificate of occupancy or completion fee: 65 USD (No fee for existing-building certificates issued under rule 111.4)
“The fees for examination and processing of construction documents when required to be submitted to the division of industrial compliance, except medical gas piping systems and temporary structures, shall be in accordance with Table B1.”
Chapter 4101:7-7 | Fees ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Variable (with conditions) — Construction-document submissions and inspections handled by certified municipal, township, or county building departments in Ohio.
  “Fees for construction documents submitted to and inspections made by certified building departments shall be in accordance with the locally adopted fee schedule.”
  Chapter 4101:7-7 | Fees ↗Re-checked Sep 12, 2026
Permit processPublished (with conditions)
Construction, erection, alteration, or equipment of buildings subject to Ohio Revised Code section 3781.06.
- Before beginning construction, the owner must submit plans, drawings, specifications, and data to the municipal, township, or county building department having jurisdiction, subject to the statutory exceptions where no certified department has jurisdiction.
- No owner may proceed until the plans and specifications are approved or the industrialized unit is inspected at the point of origin.
- Plans must comply with Chapters 3781 and 3791 and applicable rules.
- Approval becomes invalid if work has not commenced within twelve months; one additional twelve-month extension may be granted if requested at least ten days before expiration and accompanied by a fee not exceeding $100.
- If work is delayed or suspended for more than six months, approval becomes invalid; two six-month extensions may be granted, each with a fee not exceeding $100.
- A certified building department or the superintendent must review submitted plans.
- Conditional approval may allow construction only up to the point of an unresolved objection.
initial approval deadline: <= 30 days (Failure to approve or disapprove within thirty days is treated as an adjudication order denying issuance of a license.) · commencement period after approval: 12 months (One extension of twelve months is available under the stated conditions.)
“No owner shall proceed with the construction, erection, alteration, or equipment of any building until the plans or drawings, specifications, and data have been approved as this section requires, or the industrialized unit inspected at the point of origin.”
Section 3791.04 | Submission of plan - approvals - prohibition - fine ↗Re-checked Sep 12, 2026
Campground & park staysLimited
Occupancy and placement of recreational vehicles in Ohio-licensed campgrounds and temporary campgrounds.
- Recreational vehicles may be parked only on sites verified as complying with plans approved by the director, or, for a temporary campground, by the licensor.
- A campground site may contain no more than one recreational vehicle and two portable camping units, or three portable camping units.
- Sites generally must be at least 1,000 square feet, subject to the temporary-campground density exception determined by the licensor where open fires are prohibited.
- Separation, sanitation, sewage, gray-water, and licensed-capacity requirements also apply.
minimum campground site area: >= 1000 square feet (Except as provided in paragraph (I)(11) for temporary campgrounds.) · recreational vehicles per site: 1 vehicle (A site may also contain two portable camping units; alternatively, a site may contain three portable camping units.)
“Recreational vehicles or portable camping units shall be parked only on sites that have been verified as complying with plans approved by the director, or in the case of a temporary campground, by the licensor;”
Rule 3701-26-04 | Campground requirements ↗Re-checked Sep 12, 2026
2 more reviewed findings on this topic
- Prohibited — Camping in Ohio state forests outside areas, sites, or campgrounds designated by the chief of the division of forestry or an authorized agent.
  “No person shall camp in a state forest except in areas, sites or campgrounds designated by the chief of the division of forestry or authorized agent.”
  Rule 1501:3-3-01 | Camping permitted in designated areas ↗Re-checked Sep 12, 2026
- Limited — Roadside camping at designated Ohio state forests along public roads maintained by the division of forestry.
  “Roadside camping is permitted at designated state forests, along public roads maintained by the division of forestry, during certain legally established hunting seasons as authorized by the chief of the division of forestry.”
  Rule 1501:3-3-06 | Camp occupancy ↗Re-checked Sep 12, 2026
county zoning authorityGeneral
County commissioners may adopt zoning resolutions regulating building, structures, land uses, and districts or zones in unincorporated territory statewide.
- The authority is exercised by resolution and must be in accordance with a comprehensive plan.
- The authority applies to unincorporated territory of the county.
- The statute begins with the exception phrase “Except as otherwise provided in this section,” so the limitations in ORC Chapter 303 apply.
- For nonresidential property only, the county may regulate height, bulk, number of stories, size, lot coverage, yards, courts, open spaces, and population density.
- Agricultural uses and agricultural buildings are subject to the limitations in ORC 303.21; the statute also contains limitations for public utilities, railroads, telecommunications towers, alcoholic-beverage sales, oil and gas drilling, and permanently sited manufactured homes.
- Activities regulated under ORC Chapters 1513 and 1514 may be regulated only in the interest of public health or safety, and Chapter 1514 activities must be provided for as permitted or conditional uses as specified by ORC 303.02.
“the board of county commissioners may regulate by resolution, in accordance with a comprehensive plan”
Section 303.02 | County commissioners may regulate building and land use in unincorporated territory ↗Re-checked Sep 21, 2026
county building authorityGeneral
County commissioners may adopt and enforce local residential building regulations in unincorporated areas and may operate certified county building departments that enforce state residential and nonresidential building codes, accept and approve plans, and conduct inspections.
- Local residential building regulations may be enforced within the unincorporated area or within districts established in the unincorporated area.
- A local residential building regulation may not differ from the state residential building code unless it addresses subject matter not addressed by that code or is adopted under ORC 3781.01.
- An existing structures code must concern subject matter not addressed by, and may not conflict with, the state residential building code.
- County building departments may enforce state codes only for the types of buildings and subject matters for which they are certified.
- Certification permits enforcement authority, plan approval, and inspections; the certification application identifies whether it covers residential or nonresidential buildings and whether residential certification covers new construction only or also repair and alteration.
- The board may adopt flood-hazard, Lake Erie coastal-erosion, and drainage regulations, subject to the statutory limits and exceptions in ORC 307.37.
- Local regulations, codes, or amendments require public hearings at not fewer than two regular or special board sessions; they take effect on the thirty-first day after adoption.
- Regulations adopted under ORC 307.37 generally do not affect buildings or structures existing, or under construction, before adoption, except as provided for an existing structures code.
- The state residential building code is effective as a uniform requirement in areas with a building department certified to enforce it.
“The board of county commissioners may adopt local residential building regulations governing residential buildings as defined in section 3781.06 of the Revised Code”
Section 307.37 | Adoption of county building code ↗Re-checked Sep 21, 2026

Still unanswered

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

Owner-builder exemption — Owner-builder exemption from Harrison County residential building permit or inspection requirements.
Local zoning — Aggregate local zoning across Harrison County townships, villages, and unincorporated areas.
Zoning districts — Published zoning districts and maps for Harrison County and its subordinate local jurisdictions.
Minimum dwelling size — Minimum dwelling size requirements in Harrison County.
Minimum lot size — Minimum lot size requirements in Harrison County.

10 more unanswered

Setbacks
Lot coverage
Building height
Living in an RV
Camping on your land
Tiny homes
Accessory dwellings
Off-grid sanitation
Driveway access
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 Harrison County, Ohio

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

Harrison County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths: a durable current and mid-century hazard profile and manageable long-term carry cost. Watch-outs: a weaker property-autonomy legal backdrop and about 32,905 people within a 30-minute drive.

Do you need a building permit in Harrison County, Ohio?

Harrison County generally requires a residential building permit, and it has no county-wide zoning. Onsite septic is permitted by Harrison County General Health District. 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 Harrison County, Ohio?

Land in Harrison County runs about $5,421 per acre, based on the latest county data.

What is the water situation in Harrison County?

Harrison County gets about 41.7" of rain a year, with severe drought in roughly 2.7% of years.

How remote is Harrison County?

A representative private-land location has about 32,905 people within a 30-minute drive and 7,069,540 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.

Building permits, zoning and land rules in Harrison County, Ohio

At a glance

Who to call

Do you need a building permit in Harrison County, Ohio?

Who handles Harrison County building permits, and how do you reach them?

Does Harrison County have zoning?

How do septic permits work in Harrison County?

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

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

What should you check before buying land in Harrison County?

Watch-outs

Sources

Harrison County in Ohio

How Harrison County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Harrison County

Harrison County rules

Ohio rules that apply here

Still unanswered

Living off-grid in Harrison County, Ohio

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

Do you need a building permit in Harrison County, Ohio?

How much does land cost in Harrison County, Ohio?

What is the water situation in Harrison County?

How remote is Harrison County?

How Harrison compares in Ohio