Bolthole Index

Putnam County, Ohio

Zoning, building permits and septic rules in Ottawa Township, Ohio

Ottawa Township in Putnam County, Ohio is zoned, and its zoning inspector handles building permits, which cost $50 to $200 depending on project value12. Township zoning bars mobile homes3. Septic and well permits for every address in the township come from the Putnam County Health Department, not the township45.

At a glance

Zoning
Yes, township zoning with A-1 and R-1 districts16
Building permit
Issued by the township; fee $50-$200 by project value72
Minimum lot
1 acre in A-1 (2 acres with a pond) and 1 acre in R-186
Mobile homes
Not allowed under township zoning3
Septic permit
Required, from the Putnam County Health Department; 2025 fee $5004
Well / water permit
Required from the health department; 2025 fee $4255
Driveway
County engineer permit off a county road9

Who to call

Zoning

Ottawa Township Zoning Inspector

Township zoning and building permits in Ottawa Township

419-348-4466

Septic permits

Putnam County Health Department, Environmental Health Division

Household sewage treatment system and private water system permits

419.523.5608

256 Williamstown Rd, Ottawa, OH 45875

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Does Ottawa Township, Ohio have zoning?

Yes. Ottawa Township is one of the Putnam County townships listed as zoned, and the county's building packet names a township zoning inspector for it110. Putnam County itself does not run zoning in the unincorporated area; zoning is handled at the village or township level11.

The packet identifies an A-1 district, where the minimum lot is 1 acre (2 acres if a pond is planned), and an R-1 district with a 1-acre minimum86. The packet does not publish a full district list or zoning map, so ask the zoning inspector which district a parcel sits in and about setbacks, height and lot coverage, which we could not confirm6.

Ottawa Township's entry in the packet also says "No mobile homes"3. Ohio law separately says a permanently sited manufactured home must be allowed wherever single-family homes are, while local governments may prohibit mobile homes that do not qualify12. Ask the zoning inspector how that applies to the home you have in mind.

Do you need a building permit in Ottawa Township, and who issues it?

Building permits in Putnam County are not issued by a county building department; for property outside village limits, contact the township13. For Ottawa Township, the packet lists a permit fee of $50 to $200, varying with the estimated value of the project2. The packet says the building permit step applies in zoned townships and tells applicants to check with each township for specific requirements7.

We could not confirm which kinds of construction in Ottawa Township need a permit, whether inspections or a certificate of occupancy apply, or whether an owner-builder exemption exists10. Ohio's state residential building code applies statewide, and local rules may add to it only on subjects the state code does not cover14. Call the Ottawa Township Zoning Inspector at 419-348-4466 before you draw plans10.

How do septic permits work in Ottawa Township?

Septic permits for Ottawa Township come from the Putnam County Health Department, not the township1516. No individual or contractor may install or alter a sewage treatment system without a permit, and the county lists the permit fee at $500 for 20254.

Every buildable lot needs a site evaluation before the permit is issued, and some need a soil evaluation by a certified soil scientist; the work must be done by a registered septic installer4. The health department also says almost all systems need perimeter, curtain tile or engineered drainage, and it will not allow a system in a flood plain or wetland17. Across Putnam County, USDA rates 0% of soils as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system18.

An existing system needs an operation permit renewed every 5 years19. A new home off municipal sewer should involve the health department from the start at 419.523.560816.

Do you need a well permit in Ottawa Township?

Yes. A private water system in Ottawa Township cannot be installed without a permit from the health department, and the 2025 fee stated in the county packet is $4255. The county also says the permit covers existing wells connected to a new dwelling and ponds used for drinking water20. Prerequisites include a site evaluation, isolation-distance verification, a final inspection and a bacteria sample5.

Can you live in an RV, mobile home or tiny home in Ottawa Township?

Mobile homes are not allowed under Ottawa Township's zoning entry in the county packet3. We could not confirm any Ottawa Township rule on long-term RV living, temporary camping or tiny homes, so call the Zoning Inspector at 419-348-4466 before you move one onto a lot10. Ohio's campground rules apply to licensed campgrounds, not to a private lot, so they do not answer the question21.

Building a home in Ottawa Township: the steps, in order

  1. Call the Putnam County Health Department first for the site evaluation, then apply for the septic and water permits45.
  2. If you are creating a new lot, it must meet Planning Commission requirements and carries a $40 fee22.
  3. Ask the Ottawa Township Zoning Inspector about your district, lot size and the building permit, which costs $50 to $200210.
  4. For a driveway off a county road, get a permit from the County Engineer's office; township roads go through the Township Trustees and state highways through ODOT9.
  5. Finish with the township's building permit and inspections, which we could not confirm in detail23.

What stays with Putnam County, and what to check before you buy

Putnam County, not the township, handles septic and well permits, new-lot approval through the Planning Commission and floodplain administration in unincorporated areas242526. For rules on land outside Ottawa Township, see the Putnam County page.

Before buying, check the flood plain, the zoning district and the site evaluation. Putnam County's effective property tax rate is about 1%27.

Watch-outs

  • Ottawa Township is separate from the village of Ottawa, where building permits come from the village instead13.
  • The packet's fee figures are labeled 2025, so confirm current fees with the health department before budgeting4.
  • We could not confirm Ottawa Township's setbacks, dwelling size minimums, RV or tiny-home rules; ask the Zoning Inspector at 419-348-446610.

Sources

  1. Putnam County Building Process (Ottawa Township), quoted and re-checked
  2. Putnam County Building Process (Ottawa Township), quoted and re-checked
  3. putnamhealth.com (Ottawa Township), quoted and re-checked
  4. Sewage | Putnam Health Department Ohio (Ottawa Township), quoted and re-checked
  5. putnamhealth.com (Ottawa Township), quoted and re-checked
  6. Putnam County Building Process (Ottawa Township), quoted and re-checked
  7. Putnam County Building Process (Ottawa Township), quoted and re-checked
  8. putnamhealth.com (Ottawa Township), quoted and re-checked
  9. putnamhealth.com (Ottawa Township), quoted and re-checked
  10. Ottawa Township Zoning Inspector (putnamhealth.com)
  11. Engineer | Putnam County Ohio, quoted and re-checked
  12. Section 3781.184 - Ohio Revised Code, quoted and re-checked
  13. Permits | Putnam County Ohio, quoted and re-checked
  14. Section 3781.10 | Board of building standards - powers and duties (Ohio statewide rule), quoted and re-checked
  15. Sewage | Putnam Health Department Ohio (Ottawa Township), quoted and re-checked
  16. Putnam County Health Department, Environmental Health Division (putnamhealth.com)
  17. putnamhealth.com (Ottawa Township), quoted and re-checked
  18. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  19. Operation & Maintenance | Putnam Health Department Ohio (Ottawa Township), quoted and re-checked
  20. Water | Putnam Health Department Ohio, quoted and re-checked
  21. Rule 3701-26-04 | Campground requirements (Ohio statewide rule), quoted and re-checked
  22. Putnam County Building Process (Ottawa Township), quoted and re-checked
  23. Putnam County Building Process, quoted and re-checked
  24. New Home Construction | Putnam Health Department Ohio, quoted and re-checked
  25. Planning Commission | Putnam County Ohio, quoted and re-checked
  26. Contact Information | Putnam County Ohio, quoted and re-checked
  27. Effective property tax rate: Bolthole Index county data

Written October 24, 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.

Answers from the rulebook for Ottawa Township

Ottawa Township’s own rules

  • Local zoningPresent (with conditions)

    Land inside Ottawa Township, Putnam County, Ohio.

    • The official county-health-department building packet identifies a township zoning inspector.
    “Ottawa Township – Zoned Mike Tobe - Zoning Inspector 419-348-4466”
  • Zoning districtsPartial

    Ottawa Township zoning districts.

    • The official building-process packet identifies A-1 and R-1 districts, but it does not publish a complete district list or zoning map.
    “- 1 acre minimum, 2 acres if a pond is planned for A-1 districts - 1 acre minimum in a R-1 district”
  • Minimum lot sizeSpecified

    A-1 district in Ottawa Township.

    • Two acres are required if a pond is planned.

    minimum lot area: 1 acre (2 acres if a pond is planned.)

    “- 1 acre minimum, 2 acres if a pond is planned for A-1 districts”
  • Manufactured homesProhibited

    Mobile-home occupancy inside Ottawa Township; the official source uses the term “mobile homes.”

    “Ottawa Twp: $50-$200 permit fee (varies based on estimated value of project) - 1 acre minimum, 2 acres if a pond is planned for A-1 districts - 1 acre minimum in a R-1 district - No mobile homes”
  • Permit feesVariable (with conditions)

    Ottawa Township permits described in the current county-health-department building-process packet.

    • Fee varies based on estimated project value.

    permit fee: 50-200 USD (Varies based on estimated value of project.)

    “Ottawa Twp: $50-$200 permit fee (varies based on estimated value of project)”
  • Permit processPartial

    Building-permit process in zoned townships, including Ottawa Township.

    • Ottawa Township is listed as zoned.
    • Township-specific requirements must be checked with the township.
    “Building permit: For zoned townships. Provide all required information for the building permit. Check with each township for specific requirements.”

Rules another office applies inside Ottawa Township

Ottawa Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Who permits septicLocal (with conditions)

    Household sewage treatment systems inside Ottawa Township.

    • Ohio Department of Health regulates sewage treatment systems statewide; permitting, inspections, and enforcement are conducted by local health departments.
    “Permitting, inspections and enforcement are conducted by the local health departments and local health departments may adopt more stringent rules and standards.”
  • Septic permitRequired

    Installation or alteration of a household sewage treatment system inside Ottawa Township.

    • An alteration includes connecting to an existing system and replacing a septic tank.
    • Before permit issuance, every buildable lot requires a site evaluation; some require soil evaluation by a certified soil scientist.
    • Work must be performed by a registered septic installer or service provider.

    sewage treatment system permit fee: 500 USD (2025 fee stated in the building-process packet)

    “No individual or contractor may install or alter a sewage treatment system without a permit. An alteration includes, but is not limited to, connecting to an existing sewage treatment system and replacing a septic tank.”
  • Septic inspectionRequired

    Existing household sewage treatment systems inside Ottawa Township.

    • The system requires a current operation permit for its life, renewed every five years.
    • A pumping report from a registered septic hauler may be submitted instead of an evaluation during the five-year permit cycle.

    operation-permit cycle: per 5 years (Evaluation or qualifying pumping report is required during each cycle.)

    “Evaluation of the STS once every 5-year permit cycle. A pumping report may be accepted in lieu of evaluation.”
  • Off-grid sanitationLimited

    Homes inside Ottawa Township not connected to municipal water and/or sewer.

    • The Health Department should be involved from the beginning.
    • Household sewage treatment systems require permits and site evaluation.
    “As part of this process, EH staff will ensure that no sewage treatment system is installed in a flood plain or wetlands. Additionally, almost all sewage treatment systems require a perimeter, curtain tile or engineered drainage to be installed.”
  • Well permitRequired

    Private water systems inside Ottawa Township.

    • An alteration includes connecting an existing private water system to a new dwelling.
    • A completed application, detailed drawing, contractors, blue flag, site evaluation, isolation-distance verification, final inspection, and bacteria sample are stated prerequisites.

    private water system permit fee: 425 USD (2025 fee stated in the building-process packet)

    “A final inspection will occur and a water sample collected to test for bacteria. A private water system cannot be installed without a permit.”
  • Subdividing landRegulated (with conditions)

    Creation of new lots inside Ottawa Township.

    • New lots must meet Planning Commission requirements, including lot size and dimensions.
    • The published process identifies a $40 new-lot fee.
    • Township zoning and Health Department requirements may also apply.

    new lot fee: 40 USD

    “New Lots: ($40 fee) When a new lot is being created, it must meet all the requirements of the planning commission, including lot size, dimensions, etc.”
  • Driveway accessRequired

    A driveway installed from a county road inside Ottawa Township.

    • Township-road access requirements are handled by Township Trustees; state-highway access is handled by ODOT.
    “Driveway and/or yard enclosure permit: When a driveway is being installed off of a county road and/or if your yard is being enclosed a permit is required from the Engineer’s office.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Ottawa Township or Putnam County directly.

  • Building permit — Residential construction inside Ottawa Township.
  • Owner-builder exemption — Owner-built residential work inside Ottawa Township.
  • Building code adopted — Construction inside Ottawa Township.
  • Inspections — Building inspections inside Ottawa Township.
  • Certificate of occupancy — New or altered dwellings inside Ottawa Township.
11 more unanswered
  • Minimum dwelling size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Mandatory utility hookup
  • Agricultural exemption
  • 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.

Unanswered questions are usually a sign that Ottawa Township publishes no rule on the point, not that none exists. Putnam County’s page lists the county offices to call.

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