Bolthole Index

St. Clair County, Michigan

Building permits, zoning and land rules in Marysville, Michigan

Marysville, Michigan requires construction permits for building work and changes in occupancy; the city Building Department issues building and trade permits inside city limits.1 Marysville has its own zoning districts, while septic permits for properties without public sewer come from the St. Clair County Health Department.23 Stored recreational vehicles cannot be used for living or housekeeping in Marysville residential districts.4

At a glance

Building permits
City Building Department issues building and trade permits for regulated work1
Zoning
Marysville district-specific zoning applies2
Septic permits
County Health Department; required before septic installation or repair5
RV living
Stored RVs cannot be used for living; trailer-coach occupancy restricted to authorized trailer camps4
Minimum home size
In RM and RMA, efficiency units require at least 350 square feet; other bedroom counts have higher minimums6
Owner-builder
Own-use licensing exception does not waive building permits or zoning7
Private wells
County Health Department application and permit before private-water-system work8

Who to call

Building permits

Marysville Building Department / Planning and Zoning

Building, electrical, mechanical and plumbing permits; plan reviews, inspections and planning/zoning questions inside Marysville.

(810) 455-1310

[email protected]

200 East 14th Street Marysville, Michigan 48040

Septic permits

St. Clair County Health Department - Environmental Health Division

On-site sewage (septic) construction and repair permits for St. Clair County

(810) 987-5306

Well permits

St. Clair County Health Department - Environmental Health Division

Private water-system permits and questions about proposed or existing wells

(810) 987-5306

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

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

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Do you need a building permit in Marysville, MI?

Marysville requires construction permits to construct, enlarge, alter, repair, move or demolish a building, or change its occupancy.1 Marysville also requires construction permits for covered electrical, gas, mechanical and plumbing-system work.1 Ask the Marysville Building Official about the exact scope of your project before starting, including whether your repair needs a building permit.1 Michigan’s owner-builder licensing exception applies to a residential structure erected for the owner’s own use and occupancy on the owner’s property; that exception does not eliminate building-permit, inspection, zoning or utility requirements.7

Who issues building permits and zoning approvals in Marysville?

The Marysville Building Department conducts plan reviews, issues building, electrical, mechanical and plumbing permits for regulated work within municipal limits, and performs subsequent inspections.1 Reach the department at (810) 455-1310 or [email protected] for building-permit questions.1 Marysville’s Planning Department assists with site-plan submissions, rezoning requests, subdivision plats and right-of-way vacation requests.1 Septic installation and repair approvals remain with the St. Clair County Health Department, rather than the city building counter.5 Ask the city for the applicable building-permit fees and application requirements for your proposed work.9

Does Marysville have zoning, lot-size rules and setbacks?

Marysville publishes a district-specific zoning schedule, so identify the parcel’s district before choosing a home design or dividing land.2 In Marysville’s RMA residential-agricultural multiple-family district, a multiple-family dwelling requires at least 4 acres, with additional lot-area requirements per unit.10 RMA main buildings must be at least 50 feet from a street and 25 feet from another property line unless the ordinance formula requires more.11 RMA limits building coverage to 30% of the lot and height to 3 stories and 30 feet.1213 Those RMA standards should not be applied to a parcel in a different Marysville district.2

Can you live in an RV or tiny home in Marysville?

Marysville allows recreational-vehicle storage in residential districts subject to conditions, but stored recreational equipment cannot have fixed utility connections or be used for living or housekeeping.4 Marysville restricts trailer-coach parking for occupancy on private property to an authorized, licensed trailer camp.4 Buying a residential lot therefore does not authorize living in a stored RV while building a home.4 In RM and RMA, the minimum floor area is 350 square feet for an efficiency unit and 600 square feet for a one-bedroom unit; larger bedroom counts require more area.6 We could not confirm a specific tiny-home occupancy rule; ask Marysville’s Building Official about your proposed dwelling and zoning district.1

How do septic permits and private wells work inside Marysville?

For Marysville properties not served by public sewer, the St. Clair County Health Department handles on-site sewage disposal permits.3 A sewage permit is required before installing or repairing a septic system; the published county instructions cover residential and commercial systems generating less than 10,000 gallons per day.5 Call Environmental Health at (810) 987-5306 about a proposed or existing system.14 Private-water-system construction, development or installation requires a county application and permit before work begins, with a site plan and fee.8 The county lists a residential Type III well-permit fee of $225.8 Ask the city about public-service connections before assuming a private system fits your Marysville project.1

What are the steps to build a home in Marysville?

1. Ask Marysville’s Building and Planning office to identify the parcel’s zoning district and review the proposed site plan before committing to a design.12 2. Resolve sanitation and water: contact St. Clair County Environmental Health for septic installation or repair and any proposed private water system.58 3. Submit the covered building and trade work to Marysville’s Building Department for plan review and construction permits.1 4. Arrange city inspections as construction proceeds and ask the Building Official about the occupancy approvals applicable to the project.19 For land outside Marysville, use the St. Clair County guide and confirm the responsible local community; zoning varies by community rather than following a single countywide ordinance.15

Watch-outs

  • Marysville RV storage permission does not allow living or housekeeping in the stored vehicle.4
  • We could not confirm Marysville’s general public-water or sewer connection thresholds; ask the city Building Official before planning private utilities.1
  • Marysville subdivision development requires a certified surface-water drainage plan designed to prevent ponding 24 hours after precipitation.16

Sources

  1. Marysville Building Department / Planning and Zoning (cityofmarysvillemi.com)
  2. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  3. On-Site Sewage Disposal Systems, quoted and re-checked
  4. Marysville Code, Sec. 9.23 Recreational vehicles (Marysville), quoted and re-checked
  5. On-Site Sewage Disposal Systems, quoted and re-checked
  6. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  7. Frequently Asked Questions – Residential Builder (Michigan statewide rule), quoted and re-checked
  8. Drinking Water Wells, quoted and re-checked
  9. Marysville Code, Sec. 8.1 Enforcing agency (Marysville), quoted and re-checked
  10. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  11. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  12. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  13. City of Marysville Zoning Ordinance, Article 15 Schedule of Regulations (Marysville), quoted and re-checked
  14. St. Clair County Health Department - Environmental Health Division (stclaircounty.org)
  15. Best Known Community Zoning, quoted and re-checked
  16. Marysville Code, Sec. 8.10 Subdivision development (Marysville), quoted and re-checked

Written October 11, 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 Marysville

Marysville’s own rules

  • Certificate of occupancyLimited

    Uses and construction inside Marysville city limits for which the city-administered code requires a certificate of use or occupancy.

    • The code authorizes designated city personnel to issue certificates of use of occupancy.
    • The opened zoning ordinance expressly requires a certificate of occupancy before operation of a medical marihuana home-based business and for each new or different caregiver using a parcel.
    “No medical marihuana home based business may be operated prior to the City Building Official issuing a Certificate of Occupancy”
  • Zoning districtsPublished

    Marysville city zoning districts and their dimensional schedule.

    • The official schedule identifies R1-A, R1-B, R1-C, RM, RMA, MH, RO-1, C-1, C-2, C-3, IRO, M-1, M-2, and TD.
    “Section 1500: Height, Bulk, Density, and Area Standards by Zoning District”
  • Minimum dwelling sizeSpecified

    RMA residential-agricultural multiple-family district inside Marysville city limits.

    • Article 15 footnote j applies to RM and RMA minimum floor-area requirements.
    • The minimum depends on bedroom count.

    efficiency unit minimum floor area: >= 350 sq. ft. · one-bedroom unit minimum floor area: >= 600 sq. ft. · two-bedroom unit minimum floor area: >= 800 sq. ft. · three-bedroom unit minimum floor area: >= 1000 sq. ft. · more-than-three-bedroom unit minimum floor area: 1,150 plus 150 per additional bedroom sq. ft.

    “Efficiency unit 350 square feet [...] One bedroom unit 600 square feet”
  • Minimum lot sizeSpecified

    RMA residential-agricultural multiple-family district inside Marysville city limits.

    • No multiple-family dwelling may be erected on less than four acres in an RMA district.
    • Additional lot-area requirements apply per unit.

    minimum lot area: >= 4 acres

    “no less than four (4) acres in an RMA district”
  • SetbacksSpecified

    RMA residential-agricultural multiple-family district inside Marysville city limits.

    • The schedule marks RMA yard entries with footnotes a, c, and k.
    • Footnote c requires main buildings to be at least 50 feet from a street and at least 25 feet from another property line unless the formula produces a greater requirement.
    • Footnote k requires minimum building-to-building spacing of 30 feet, or 15 feet for a corner-to-corner relationship.

    street setback: >= 50 feet (formula may require more) · other property-line setback: >= 25 feet (formula may require more) · minimum building separation: >= 30 feet (15 feet for corner-to-corner relationship)

    “The minimum distance between any two (2) buildings shall be regulated according to the length and height of such buildings, but in no instance shall this distance be less than thirty (30) feet unless there is a corner-to-corner relationship between buildings in which the minimum distance shall be fifteen (15) feet.”
  • Lot coverageSpecified

    RMA residential-agricultural multiple-family district inside Marysville city limits.

    • The maximum applies to all buildings.

    maximum lot coverage by all buildings: <= 30 percent

    “RMA 4 ac. (i) i -- 3 30 a,c,k c,k c,k c,k j 30%”
  • Building heightSpecified

    RMA residential-agricultural multiple-family district inside Marysville city limits.

    • The maximum height is three stories and 30 feet.

    maximum height: 3 stories · maximum height: <= 30 feet

    “RMA 4 ac. (i) i -- 3 30 a,c,k c,k c,k c,k j 30%”
  • Living in an RVLimited

    Occupancy or living use of recreational vehicles and trailer coaches on private residential property inside Marysville city limits.

    • Trailer-coach occupancy on private property is allowed only in an authorized trailer camp licensed under Act 243.
    • Recreational equipment and recreational vehicles may be parked or stored in residential districts subject to city conditions.
    • Stored recreational equipment may not have fixed utility connections or be used for living or housekeeping.
    • Emergency or temporary trailer-coach parking on a street, alley, or highway is limited to one hour.

    side-yard storage setback: >= 2 feet · rear-yard storage setback: >= 3 feet · front-yard recreational vehicle quantity: <= 1 vehicle or equipment piece · emergency or temporary street parking: <= 1 hour

    “No person shall park or permit the parking of a trailer coach for occupancy on any private property within the city except in an authorized trailer camp”
  • Subdividing landRegulated (with conditions)

    Subdivision development inside Marysville city limits.

    • A subdivision site plan must include a surface-water drainage plan.
    • The drainage plan must be certified by a registered professional engineer or registered land surveyor.
    • The plan must provide drainage such that there is no ponding 24 hours after a precipitation event.

    post-precipitation ponding period: 24 hours

    “Any person or entity seeking to have a subdivision of any kind developed in the city shall as part of a site plan submit a surface water drainage plan that is certified by a registered professional engineer or a registered land surveyor to drain such that there will be no ponding or water 24 hours after a precipitation event.”
  • Permit processPartial

    City-administered building-code permit process inside Marysville city limits.

    • The city designates registered individuals to receive fees, issue permits, conduct plan reviews, and issue notices, orders, and certificates of use of occupancy.
    • Individuals conducting plan reviews and inspections must be registered under 1986 PA 54.
    “receive all fees, issue permits, conduct plan reviews”

Still unanswered

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

  • Building permit — General building construction inside Marysville city limits.
  • Owner-builder exemption — Owner-builder exemption from building-code permits inside Marysville city limits.
  • Camping on your land — Temporary camping on land inside Marysville city limits.
  • Tiny homes — Tiny-home occupancy inside Marysville city limits.
  • Manufactured homes — Manufactured-home occupancy inside Marysville city limits.
7 more unanswered
  • Accessory dwellings
  • Septic permit
  • Off-grid sanitation
  • Mandatory utility hookup
  • Agricultural exemption
  • Short-term rentals
  • Permit fees

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 Marysville publishes no rule on the point, not that none exists. St. Clair County’s page lists the county offices to call.

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