Zoning, building permits and septic rules in Port Huron Township, Michigan

Port Huron Township’s own rules

• Building permitRequired

  Building work inside Port Huron Charter Township.

  • The permit must be submitted and approved before work begins; emergencies may be handled by contacting the Building Department for immediate issuance assistance.

  “Permits for Building, Electrical, Plumbing, and Mechanical work are required to be submitted and approved prior to the start of any work.”

• Certificate of occupancyRequired

  All Township building permits other than demolition permits.

  • Demolition permits are excepted.
  • A $50 certificate-of-occupancy fee is listed in the schedule.

  certificate of occupancy fee: 50 USD (Required for all building permits except demolition permits)

  “$50.00 (required for all building permits except demolition permits)”

• Local zoningPresent (with conditions)

  Land inside Port Huron Charter Township.

  “This chapter shall be known and may be cited as "The Charter Township of Port Huron Zoning Ordinance" or "The Charter Township of Port Huron Zoning Regulations."”

• Living in an RVTemporary only (with conditions)

  Occupancy of recreational vehicles in recreational vehicle parks inside Port Huron Charter Township.

  • Occupancy exceeding 90 days is defined as permanent and is not permitted.
  • A park requires Township licensure, and its location must be industrial or commercial with at least 150 feet of major-thoroughfare frontage.

  maximum occupancy before permanent: <= 90 days (A period in excess of 90 days is considered permanent)

  “Permanent dwellings or permanent occupancy of a vehicle shall not be permitted in a recreational vehicle park. A period in excess of 90 days is hereby considered to be permanent.”

• Mandatory utility hookupConditional

  Recreational vehicle parks inside Port Huron Charter Township.

  • Applies when municipal water and/or sewer is available and accessible.

  “Connection shall be made to a municipal water and/or sewer system when available and accessible.”

• Subdividing landRegulated (with conditions)

  Land divisions and subdivisions inside Port Huron Charter Township.

  “chapter 20 land divisions and subdivisions (§ 20-1 &ndash; § 20-49)”

• Permit feesPublished (with conditions)

  Township building, planning, zoning, electrical, mechanical, and plumbing permits and reviews.

  • Fee schedule effective January 1, 2026.
  • The first $100 of a building application is non-refundable.
  • Escrow and additional-review charges can apply.

  building permit fee up to $1,000 cost of improvement: 75 USD (Includes one inspection only) · certificate of occupancy fee: 50 USD (Required for all building permits except demolition permits)

  “the first $100.00 of an application fee is non-refundable.”

• Permit processPublished (with conditions)

  Building, electrical, plumbing, mechanical, and zoning permit applications inside Port Huron Charter Township.

  • Applications must be delivered, faxed, or emailed before work starts.
  • Normal approval for new-structure or addition building and zoning permits is 3 to 10 business days.
  • Emergency issuance assistance may be requested by call or email.

  normal approval time: 3 to 10 business days (Building and zoning permits for new structures or additions)

  “Normally building and zoning permits for new structures or additions are approved within 3 to 10 business days.”

Rules another office applies inside Port Huron Township

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

• Building code adoptedAdopted (with conditions)

  Construction administered by the Port Huron Township Building Department.

  • The department describes its role as administering State of Michigan Construction Codes and local ordinances.

  “Our Mission is to effectively administer the State of Michigan Construction Codes and local ordinances to ensure public health, safety and welfare”

• Who permits septicCounty (with conditions)

  On-site sewage systems serving property inside Port Huron Charter Township, within St. Clair County.

  • Applies to residences and businesses not served by public sewer.

  “Prior to installing or repairing a septic system, a sewage permit must be obtained from the Health Department.”

• Septic permitRequired

  Installation or repair of an on-site septic system inside Port Huron Charter Township.

  • The county page states its permit instructions cover residential and commercial buildings generating less than 10,000 gallons of sewage per day.

  daily sewage generation threshold: < 10000 gallons/day (County page identifies this threshold for its residential and commercial permit instructions)

  “Prior to installing or repairing a septic system, a sewage permit must be obtained from the Health Department. Instructions and applications are available for both residential and commercial buildings that generate less than 10,000 gallons of sewage per day.”

• Well permitRequired

  Private water systems inside Port Huron Charter Township.

  • Requires completed application, site plan, and required fee before work begins.
  • Published fees are $225 for residential Type III and $400 for commercial Type II well permits.

  residential Type III well permit fee: 225 USD · commercial Type II well permit fee: 400 USD

  “Any property owner intending to construct, develop, or install a private water system must submit an application and permit to the Health Department prior to the start of work.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Port Huron Township or St. Clair County directly.

• Owner-builder exemption — Owner-built residential construction inside Port Huron Charter Township.
• Minimum dwelling size — Single-family residential zoning districts inside Port Huron Charter Township.
• Minimum lot size — Single-family residential zoning districts inside Port Huron Charter Township.
• Setbacks — Single-family residential zoning districts inside Port Huron Charter Township.
• Lot coverage — Zoning districts inside Port Huron Charter Township.

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.

Off-grid gear

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

• Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
• Power Bluetti Solar generators and home battery backup for living off the grid.
• Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
• Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.