Bolthole Index

Tuscola County, Michigan

Building permits, zoning and land rules in Caro, Michigan

Caro, Michigan requires building permits for applicable construction projects, with building-permit services provided by SAFEbuilt.1 Caro sets its own zoning rules; projects needing zoning approval should start with the city before the building-permit application.23 Tuscola County Health Department handles septic and private-well permitting, while Michigan requires public sewer connection where available for buildings with plumbing.45

At a glance

Building permits
Required for applicable projects; SAFEbuilt provides building-permit services1
Zoning
City zoning districts and local approval26
Septic permits
Tuscola County Health Department; new and replacement systems need approval47
Public sewer
Connection required where available for buildings with plumbing5
Land-division minimums
RA-1: 12,000 square feet and 80 feet frontage; RA-2: 7,200 square feet and 60 feet frontage89
Owner-builder
State licensing exemption for qualifying own-use construction; building permits and zoning still apply10
Private wells
County health permit before construction, followed by final inspection and sampling11

Who to call

Zoning

City of Caro Zoning Administrator

City zoning questions, district standards and development proposals

989-673-7671 x 5225

[email protected]

317 S. State St. Caro, MI 48723

Building permits

SAFEbuilt — Tuscola County, MI Office

Building and trade permit applications, inspections and building guides for Caro

(989) 262-4546

[email protected]

141 S Almer St. Suite 1, Caro, MI 48723

Septic permits

Tuscola County Health Department Environmental Health

Septic and private-well applications and environmental-health review

(989) 673-8119

1309 Cleaver Road Ste B, Caro, MI 48723

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 Caro means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Caro, MI?

Caro requires building permits for applicable construction projects, and SAFEbuilt provides the building-permit service inside city limits.1 Michigan requires a written building-permit application before construction, subject to exceptions in the construction code; the application includes plans and a site plan.12 Ask SAFEbuilt whether your proposed work qualifies for an exception before starting.1

Michigan’s owner-builder licensing exemption covers qualifying construction for the owner’s own use and occupancy on the owner’s property, but leaves building permits, inspections, zoning and utility requirements in place.10 Permitted construction must receive periodic inspections, and a new or altered building subject to the code cannot be occupied until the code official issues a Certificate of Occupancy.1314

Who handles Caro building permits and zoning approval?

For Caro building-permit applications, contact SAFEbuilt’s Tuscola County office at (989) 262-4546 or [email protected]; the office is at 141 S Almer St. Suite 1, Caro, MI 48723.3 SAFEbuilt publishes building, mechanical, plumbing, electrical and soil-erosion application links on its Tuscola County service page.3

For Caro zoning questions, contact the City Zoning Administrator at 989-673-7671 x 5225 or [email protected], at 317 S. State St. Caro, MI 48723.15 Projects needing zoning approval must contact the local zoning administrator before submitting the building-permit application.3 Septic and private-well applications remain with Tuscola County Health Department Environmental Health, reached at (989) 673-8119.16

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

Caro’s zoning ordinance divides the city into districts and regulates permitted uses, building height and placement, lot size, parking and signage.15 Ask the City Zoning Administrator to identify the parcel’s district and the standards for the proposed home or accessory building.15

For parcels created through a city-reviewable land division in Caro’s RA-1 one-family residential district, the minimum area is 12,000 square feet and minimum frontage is 80 feet.8 In Caro’s RA-2 one-family residential district, those land-division minimums are 7,200 square feet and 60 feet frontage.9 Both districts also require compliance with applicable accessibility, depth-to-width and other land-division standards.89

We could not confirm Caro’s district-specific setbacks or minimum dwelling floor area; request those figures from the City Zoning Administrator before choosing a house plan.

How do septic permits and sewer connections work in Caro?

For a Caro building with plumbing fixtures or drainage piping, Michigan requires connection to public sewer where available, or otherwise to an approved private sewage-disposal system.5 Caro defines available public sanitary sewer as sewer within 200 feet of a property containing a structure from which wastewater originates; ask the city how the connection requirement applies to the parcel.17 Single-family mobile-home residences in Caro must connect to public water and sewer as provided by local ordinance.18

Where septic is the approved option, Tuscola County Health Department handles new and replacement sewage-system permits and requires a completed application, site plan and fee.47 The published sewage and sewage-replacement fees are $447 each; commercial applicants must ask the department for fees.19 The county process includes soil evaluation and inspection of prepared test holes.20

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

We could not confirm permission to live in an RV on a private Caro lot, including while building a home; ask the City Zoning Administrator about the exact address, proposed duration and occupancy. We also could not confirm Caro-specific tiny-home occupancy, accessory dwelling or temporary-camping rules.

Caro’s zoning ordinance regulates how land and buildings may be used, so take the proposed living arrangement to the city before buying a unit.15 Michigan’s sanitary-sewage rules require household wastewater to go to municipal sewer or an onsite septic system; an off-grid proposal still needs an approved sanitation path.21 For a new or altered building subject to Michigan’s construction code, occupancy also depends on issuance of a Certificate of Occupancy.14

Building a home in Caro: what are the steps in order?

  1. Ask Caro’s City Zoning Administrator to identify the district, permitted use and applicable lot and building-placement standards.15
  2. Obtain zoning approval where required before submitting the building-permit application to SAFEbuilt.3
  3. Resolve sewer service first: Michigan requires public sewer connection where available, with an approved private system otherwise.5 Where septic or a private well is proposed, use Tuscola County Health Department’s applications and obtain the applicable approval before installation or well construction.711
  4. Submit the required building-permit application, plans and site plan to the enforcing agency, and arrange inspections of permitted construction.1213
  5. Request the Certificate of Occupancy after project completion; applicable fees must be paid and permits finalized before the certificate can issue.14

What should you check before buying land in Caro?

For a Caro project requiring site-plan review, the plan must show existing and proposed driveways and driveways within 150 feet of the site; shared access along state highways should be used where possible.22 Construction or reconstruction of a driveway within state-highway right-of-way requires an MDOT driveway permit under the applicable state rules.23

Tuscola County’s soil rating is context for septic planning, not a Caro parcel approval: only 2.2% of county soils are rated not limited for a conventional drain field, so plan for a site evaluation and potentially an engineered system.24 Private-well construction needs county health approval before work, followed by final inspection and sampling.11

For land outside Caro city limits, use the Tuscola County guide and identify the local zoning administrator before applying for a building permit.3

Watch-outs

  • We could not confirm Caro’s RV-living or tiny-home occupancy rules; ask the City Zoning Administrator before buying a unit or planning to live onsite during construction.15
  • The Caro RA-1 and RA-2 figures here are land-division area and frontage minimums, not minimum house sizes.89
  • A paid Tuscola County sewage application does not guarantee permit issuance; obtain the permit before installing the system.25
  • We could not confirm Caro-specific floodplain approval requirements or building-permit fees; ask the City Zoning Administrator and SAFEbuilt before committing to a site or construction budget.153

Sources

  1. Building Codes - Tuscola County (Caro), quoted and re-checked
  2. Planning and Zoning (Caro), quoted and re-checked
  3. SAFEbuilt — Tuscola County, MI Office (safebuilt.com)
  4. Wells and Septic - Tuscola County Health Department, quoted and re-checked
  5. Michigan Part 7 Plumbing Code Rules (Michigan statewide rule), quoted and re-checked
  6. Planning and Zoning (Caro), quoted and re-checked
  7. Application for Sewage Permit and Water Supply Permit, quoted and re-checked
  8. Sec. 18-24. Standards for approval of land divisions (Caro), quoted and re-checked
  9. Sec. 18-24. Standards for approval of land divisions (Caro), quoted and re-checked
  10. Frequently Asked Questions – Residential Builder (Michigan statewide rule), quoted and re-checked
  11. tchd.us, quoted and re-checked
  12. Stille-DeRossett-Hale Single State Construction Code Act, MCL 125.1510 (Michigan statewide rule), quoted and re-checked
  13. courts.michigan.gov (Michigan statewide rule), quoted and re-checked
  14. Certificate of Occupancy Request (Michigan statewide rule), quoted and re-checked
  15. City of Caro Zoning Administrator (carocity.net)
  16. Tuscola County Health Department Environmental Health (tchd.us)
  17. Sec. 38-46. Definitions (Caro), quoted and re-checked
  18. Sec. 44-511. Standards for single-family mobile home residences (Caro), quoted and re-checked
  19. tchd.us, quoted and re-checked
  20. Helpful Hints for Preparing a Site Plan, quoted and re-checked
  21. Disposal of residential wastewater such as swimming pool water (Michigan statewide rule), quoted and re-checked
  22. City of Caro Site Plan Review Procedural Manual (Caro), quoted and re-checked
  23. Infrastructure permits (Michigan statewide rule), quoted and re-checked
  24. 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
  25. Application for Sewage Permit and Water Supply Permit, 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 Caro

Caro’s own rules

  • Local zoningPresent

    Land inside Caro city limits.

    • The City’s Planning Commission administers planning and zoning with support from City staff.
    “The Zoning Ordinance divides the City into zoning districts”
  • Zoning districtsPublished

    Zoning districts inside Caro city limits.

    • The City’s zoning ordinance and zoning map are the relevant local sources.
    “The Zoning Ordinance divides the City into zoning districts”
  • Minimum lot sizeSpecified

    RA-1 one-family residential district inside Caro city limits, for parcels created by a city-reviewable land division.

    • The parcel must also meet the applicable frontage, depth-to-width, accessibility, Land Division Act, and other article requirements.

    minimum area: >= 12000 square feet (RA-1) · minimum frontage: >= 80 feet (RA-1)

    “RA-1 One-family residential 80 12,000 RA-2 One-family residential 60 7,200”
    One more reviewed finding on this topic
    • Specified — RA-2 one-family residential district inside Caro city limits, for parcels created by a city-reviewable land division.
      “RA-1 One-family residential 80 12,000 RA-2 One-family residential 60 7,200”
  • Mandatory utility hookupConditional

    Public sanitary sewer availability for structures inside Caro city limits.

    • The code defines available public sanitary sewer by a 200-foot threshold; the opened section did not itself state the operative connection command.

    distance: <= 200 feet (from any property upon which a structure is located which wastewater originates)

    “Available public sanitary sewer means a sanitary sewer located 200 feet or less from any property upon which a structure is located which wastewater originates.”
    One more reviewed finding on this topic
  • Driveway accessLimited

    Driveway access shown and reviewed as part of a City of Caro site-plan application.

    • The site plan must show proposed and existing streets, driveways, sidewalks, and vehicle or pedestrian circulation features.
    • Driveways within 150 feet of the site must also be shown.
    • For sites affecting State Highways, shared access drives are to be used where possible to reduce the number of driveways.

    driveway review radius: 150 feet (driveways within 150 feet of the site must be shown)

    “That shared access drives will be used where possible to reduce the number of driveways along State Highways.”
  • Permit processPartial

    Permit and zoning applications inside Caro city limits.

    • Applicants must identify the needed permit or license, complete the application with required documentation, submit it online, by mail, or in person, and await review by the appropriate City department.
    • Projects may require zoning permits, site-plan review, Planning Commission approval, or Zoning Board of Appeals approval.
    “Submit your application online, by mail, or in person”

Rules another office applies inside Caro

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

  • Building permitRequired

    Projects inside Caro city limits for which a building permit is required; Tuscola County’s SafeBuilt building department provides the service.

    • Zoning approval may be required before submitting a building permit application.
    • The county page excludes Tuscola Township and Arbela Township; Caro city is not listed among those exclusions.
    “Many projects and activities in the City require permits or licenses”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Caro or Tuscola County directly.

  • Owner-builder exemption — Owner-builder exemptions inside Caro city limits.
  • Building code adopted — Building-code adoption applicable inside Caro city limits.
  • Certificate of occupancy — Certificates of occupancy inside Caro city limits.
  • Minimum dwelling size — Residential dwellings inside Caro city limits.
  • Setbacks — Residential and agricultural setbacks inside Caro city limits.
13 more unanswered
  • Lot coverage
  • Building height
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Agricultural exemption
  • Building in a floodplain
  • 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 Caro publishes no rule on the point, not that none exists. Tuscola County’s page lists the county offices to call.

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