Building permits, zoning and land rules in Cass County, Michigan

At a glance

Building permit

Required, but issued by your township, village or city, not by Cass County¹²

Zoning

Local rules vary; the applicable township, village or city administers zoning and appeals⁶

Septic

Van Buren/Cass District Health Department issues septic permits; new systems and replacements are listed at $300⁷⁸

Well

New and replacement wells require the district's permitting process⁹

Owner-builder

Michigan's licensing exemption can apply when you build on your own property for your own use and occupancy; permits and local rules still apply¹⁰¹¹

Occupancy approval

A new habitable structure needs final Health Department approval of its sanitary facilities before local occupancy approval¹²

Tiny home

Private-land occupancy is not confirmed countywide; ask the parcel's local zoning office¹³

Driveway access

County-road and state-highway driveways need the appropriate road-agency permit; private-road driveways do not¹⁴

Who to call

Contact details are copied from each office’s official page and were checked against it on October 9, 2026.

Do you need a building permit in Cass County, Michigan?

Yes. Before constructing a building or structure in Cass County, the owner or the owner's representative must apply to the appropriate enforcing agency; a permit is also required for a change in use or occupancy¹⁵. Ordinary repairs are exempt, but structural, egress, utility and other work affecting public health or general safety falls outside that exception¹⁶. Building, mechanical, plumbing and electrical permits are administered by the township, village or city where the property is located².

Michigan's statewide construction code governs covered work, including the 2021 Michigan Building Code effective April 9, 2025¹⁷. A new or altered building cannot be occupied until the code official issues a Certificate of Occupancy after required work is complete, permits are finaled and fees are paid¹⁸. Michigan's owner-builder licensing exemption can apply when an individual builds on their own property for their own use and occupancy, but permits, inspections, codes, zoning and utility requirements still apply¹⁰¹¹.

Who issues building permits in Cass County, and how do you find your township?

Cass County's permit directory lists the City of Dowagiac, the villages of Cassopolis, Edwardsburg, Marcellus and Vandalia, and the county's townships as the local units that administer permits². Identify the parcel's municipality first, then use that unit's building office rather than sending an application to Cass County². If the responsible unit is unclear, the Cass County Administration Office at 120 N Broadway in Cassopolis can be reached at 269-445-4420, although it is not the permit issuer¹⁹.

LaGrange Township illustrates the local setup: its Zoning Administrator is reached at 269-479-2387 and its Building Inspector at 574-849-5965, both at 24863 Pokagon Highway, Cassopolis, MI 49031²⁰²¹. Those contacts apply only inside LaGrange Township; a parcel elsewhere must use its own township, village or city office².

Does Cass County have zoning?

Cass County itself does not administer zoning; the township, village or City of Dowagiac where the parcel sits maintains the zoning ordinance and handles zoning permits and appeals³⁶. Michigan law provides a framework for local zoning districts but does not supply the parcel's actual district or dimensional rules²².

We could not confirm one countywide answer for setbacks, minimum lot size, minimum dwelling size, lot coverage, building height, accessory dwellings, manufactured homes or private RV occupancy. Ask the applicable local zoning office for those parcel-specific rules before treating a listing as buildable or choosing a house plan²³². If a parcel will result from a property split, local split approval is required before obtaining an address or proceeding with development²⁴.

How do septic and well permits work in Cass County?

The Van Buren/Cass District Health Department issues septic permits and well permits in Cass County, including inside cities and villages that run their own building permits, with state oversight of local onsite-wastewater programs⁷²⁵. New construction cannot begin on land without public sewer until the district approves the site or issues a sewage-disposal permit²⁶. The 2026 schedule lists $300 for a new or replacement septic system; fees vary for other permit and inspection types⁸²⁷. Submit the project or inspection form and payment, and confirm whether a scaled site drawing is required²⁸²⁷.

Call 269-782-0064 or email eh@vbcassdhd.org about septic and well work²⁹. New and replacement wells go through site evaluation, design, permit issuance and final inspection⁹. The district offers well and septic inspections for home sales, while a short-term rental inspection may be required by the applicable local code³⁰. Only 1.4% of county soils rate without severe limitations for a conventional drain field, so obtain the site evaluation before fixing the house location or budget³¹.

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

We could not confirm a countywide rule allowing or prohibiting private-land RV or tiny-home occupancy in Cass County. The applicable township, village or city administers its own zoning ordinance, so ask that local zoning office about the proposed parcel, length of stay, dwelling type and use before buying or moving a unit onto the land¹³².

Michigan's available tiny-house guidance is narrower than the private-land question: a tiny house used as a resort cabin is not treated as a recreational unit merely because it is on wheels, and it requires local zoning, building, electrical and plumbing permits and final approvals, plus applicable well and septic permits³². Cass County sanitation rules also prohibit occupying premises without adequate sewage disposal, require district approval for an individual system where applicable and require public-sewer connection when available, subject to limited alternate-method exceptions³³³⁴.

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

1. Identify the parcel's township, village or city and confirm its zoning district, allowed use and dimensional rules⁶².
2. If the parcel comes from a property split, obtain local split approval before requesting an address or proceeding with development²⁴.
3. Obtain an address, then determine whether driveway access goes through the Cass County Road Commission, MDOT or no public road agency because the driveway is on a private road³⁵³⁶.
4. Obtain district septic approval where public sewer is unavailable and complete the district's permit process for a new or replacement well²⁶⁹.
5. Apply to the township, village or city enforcing agency for building permits and applicable trade permits; an owner-builder licensing exemption does not waive these requirements¹¹¹.
6. Complete required inspections, obtain final Health Department approval of sanitary facilities and request the Certificate of Occupancy¹²¹⁸.

What should you check before you buy land in Cass County?

Confirm the parcel's municipality and zoning district first, then make the purchase contingent on acceptable septic, well, access and building approvals where practical⁶⁷⁹¹⁴. Only 1.4% of Cass County soils rate without severe limitations for a conventional drain field, despite 97.7% of the land having slopes of 15% or less, so gentle ground alone does not establish septic suitability³¹³⁷.

A Cass County Road Commission permit is required for a driveway on a county road, MDOT handles access to a state highway, and no driveway permit is required for a private road³⁸³⁶. A soil erosion and sedimentation control permit is required for earth disturbance within 500 feet of a body of water or over one acre³⁹. A state permit is required before altering or occupying the 100-year floodplain of a river, stream or drain, with the detailed Part 31 rule applying to waterways draining at least 2 square miles⁴⁰⁴¹. Drain Commissioner site-development review has separate drainage standards: covered plans set minimum floor and opening elevations, with a possible engineer-supported waiver⁴². Preliminary plat or site-plan review also requires printed and electronic plans, payment before approval and preliminary approval before final construction-plan review⁴³.

Watch-outs

• Cass County building permits and zoning rules come from the township, city or village where the parcel sits, so confirm the local unit before relying on a general county answer¹⁶.
• Only 1.4% of Cass County soils rate without severe limitations for a conventional septic drain field, so complete the district's site review before assuming a standard system will work³¹²⁶.
• Michigan's owner-builder licensing exemption is limited to an individual building on their own property for their own use and occupancy, and it does not waive permits, inspections, codes, zoning or utility requirements¹⁰¹¹.
• Cass County's private-land RV and tiny-home occupancy rules remain local and unconfirmed countywide, so call the parcel's zoning office before buying or moving a unit onto the land¹³.
• A driveway onto a Cass County road needs a Road Commission permit, access to a state highway goes through MDOT, and a private-road driveway needs neither agency's driveway permit¹⁴.

Sources

1. Building, Mechanical & Electrical Permit, quoted and re-checked
2. Cass County: Building, Mechanical & Electrical Permit (township/city/village directory) (casscountymi.org)
3. Cass County FAQ, quoted and re-checked
4. Cass County Land Development Checklist, quoted and re-checked
5. Cass County Land Development Checklist, quoted and re-checked
6. Township / City / Village Info, quoted and re-checked
7. Well, Septic, and Short-Term Rental Services, quoted and re-checked
8. Well, Septic, and Short-Term Rental Forms, quoted and re-checked
9. Water & Septic, quoted and re-checked
10. Frequently Asked Questions – Residential Builder (2026 county census)
11. Frequently Asked Questions – Residential Builder (Michigan statewide rule), quoted and re-checked
12. Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
13. Township / City / Village Info, quoted and re-checked
14. Cass County Land Development Checklist, quoted and re-checked
15. Building Permit Information, quoted and re-checked
16. Building Permit Information, quoted and re-checked
17. Code Books, quoted and re-checked
18. Certificate of Occupancy Request (Michigan statewide rule), quoted and re-checked
19. Cass County Administration Office (casscountymi.org)
20. LaGrange Township Zoning Administrator (a worked example of one of Cass County's 15 townships) (lagrangetownshipmi.com)
21. LaGrange Township Building Inspector (a worked example of one of Cass County's 15 townships) (lagrangetownshipmi.com)
22. Michigan Zoning Enabling Act (Michigan statewide rule), quoted and re-checked
23. Township / City / Village Info, quoted and re-checked
24. Cass County Land Development Checklist, quoted and re-checked
25. Well, Septic, and Short-Term Rental Services, quoted and re-checked
26. Water & Septic, quoted and re-checked
27. Well, Septic, and Short-Term Rental Forms, quoted and re-checked
28. Building, Mechanical & Electrical Permit, quoted and re-checked
29. Van Buren/Cass District Health Department, Environmental Health Division (vbcassdhd.org)
30. Water & Septic, quoted and re-checked
31. 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
32. michigan.gov (Michigan statewide rule), quoted and re-checked
33. Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
34. Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
35. Cass County Land Development Checklist, quoted and re-checked
36. Cass County Land Development Checklist, quoted and re-checked
37. Share of land at 15% slope or less: Bolthole Index county data
38. Cass County Land Development Checklist, quoted and re-checked
39. Cass County Land Development Checklist, quoted and re-checked
40. Floodplains, quoted and re-checked
41. Floodplains (Michigan statewide rule), quoted and re-checked
42. Cass County Drain Commissioner Site Development Rules, quoted and re-checked
43. Cass County Drain Commissioner Site Development Rules, quoted and re-checked

Written October 9, 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.