Oakland County, MI Business License Guide: Cities, County, and State Rules

City, village, and township layer

If your business address is inside a city, village, or township in Oakland County, that local government may control the local approval. This can include business licensing, zoning, home occupation rules, building permits, fire inspections, sign permits, sidewalk or right-of-way permits, peddler or vendor permits, rental rules, short-term rental rules, and certificates of occupancy.

Oakland County’s planning materials also point owners toward local communities for planning and zoning. In practical terms, you should not assume that a county office can approve your business use if a city, village, or township zoning ordinance controls the property.

Examples of how local rules can differ

The examples below are not a complete list of Oakland County municipalities. They show why the local address check matters.

Other Oakland County cities, villages, and townships can have different rules. Always verify the local page for your exact address and activity.

If your business is not inside a city

In many states, people ask about “unincorporated county” rules. In Oakland County, do not stop at that phrase. If your address is not inside a city, it is usually still inside a township, and a village may also be involved. Check the township or village first for zoning, home occupation, building, fire, and local licensing rules. Then check Oakland County and the State of Michigan for the separate county and state layers.

DBA, assumed name, and business name layer

Oakland County uses the term Assumed Name and also has Co-Partnership filings through the Oakland County Clerk/Register of Deeds. Many people call this a DBA. It is a public name filing. It is not the same as an LLC, corporation, trademark, sales tax license, zoning approval, or city business license.

When an Oakland County assumed name may matter

You may need to check the county assumed name process if you are a sole proprietor or partnership operating under a name that is not simply the owner’s legal name. Oakland County’s official page says the Clerk’s Office handles business name searches and registrations for Assumed Names and Co-Partnerships, and it explains that duplicate or very similar names may not be approved in Oakland County.

Oakland County’s page also states that each business name is valid for five years. The county’s current posted fee table showed a $10 fee for an assumed name certificate at the time of this review, but you should always confirm the current fee on the official county page before filing.

What a DBA does not do

• It does not create an LLC or corporation.
• It does not give statewide or nationwide name protection.
• It does not replace state tax registration.
• It does not prove the business is allowed by zoning.
• It does not replace a food license, professional license, building permit, fire inspection, or city vendor permit.

LLCs, corporations, and state-filed entities

If you are forming an LLC, corporation, or other state-filed entity, the Michigan Department of Licensing and Regulatory Affairs handles entity filings through the state business filing system. A registered entity may have separate assumed name or certificate questions at the state level. If your business will use a public name that is different from the entity’s legal name, check both the Michigan business filing rules and any county or local name filing rules that apply to your structure.

Michigan state registrations and taxes

Even if Oakland County does not require a general business license, Michigan state registrations may still apply. The state layer depends on your business structure, what you sell, whether you have employees, and whether your work is regulated.

Entity registration through LARA

The Michigan Department of Licensing and Regulatory Affairs, usually called LARA, handles many business entity filings through the Corporations Division. Michigan has launched the MiBusiness Registry Portal for business entity formation, reports, certificates, copies, and record searches. Use this layer if you are forming an LLC, corporation, limited partnership, foreign entity, or similar registered entity.

A sole proprietor may not need to form an entity just to start a business, but may still need tax registration, local approvals, an assumed name filing, or professional licensing depending on the business.

Sales tax and Michigan Treasury accounts

If you make retail sales of tangible personal property to the final consumer in Michigan, you may need a Michigan sales tax license through the Michigan Department of Treasury. Michigan’s official sales tax guidance says the state sales tax rate is 6% and that city, local, or county sales taxes are not allowed.

Michigan Treasury Online is the state system many businesses use to register, file, pay, update accounts, and manage business tax correspondence. Depending on your business, you may also need use tax, withholding tax, corporate income tax, or other Michigan tax accounts.

Employer registration

If you have employees, you may need federal and state employer accounts. Michigan’s business roadmap points new businesses with Michigan employees to registration with the IRS and Michigan Treasury for withholding. It also explains that businesses may need to register with the Unemployment Insurance Agency when they have employees, acquire a business, or meet other listed conditions.

Employer rules can also involve workers’ compensation, wage and hour rules, payroll tax deposits, workplace posters, and industry-specific safety rules. Confirm with the official agencies or a qualified professional before hiring.

Professional and industry licenses

Some businesses need a professional or occupational license before they can legally offer services. LARA’s Bureau of Professional Licensing and Bureau of Construction Codes handle many regulated professions and trades. This can include residential builders, certain contractors, electricians, plumbers, mechanical contractors, elevator professionals, boiler professionals, health professions, cosmetology, real estate, and other licensed fields.

Other Michigan agencies may control specific industries. For example, food manufacturing or food retail can involve the Michigan Department of Agriculture and Rural Development. Alcohol can involve the Michigan Liquor Control Commission. Cannabis can involve the Cannabis Regulatory Agency. Do not rely on a county or city filing if your activity also requires a state license.

Zoning, home occupation, building, fire, health, food, and industry permits

The hardest part of business licensing is often not the word “license.” It is figuring out which approval belongs to which layer. Use the sections below to sort the common permit stack.

Zoning and home occupation rules

Zoning controls whether your type of business is allowed at the address. This is usually handled by the city, village, or township planning and zoning office, not by a general Oakland County business license.

Home-based businesses should ask about home occupation rules before operating. The local government may care about customer visits, employees, parking, deliveries, storage, noise, equipment, signage, commercial vehicles, outdoor activity, and whether the home remains mainly residential. A landlord, condo association, or homeowners association may add private restrictions, but private permission does not replace government zoning approval.

Building, fire, sign, and certificate of occupancy issues

If you rent, buy, remodel, or change the use of a commercial space, check building and fire rules before opening. The enforcing agency may be local or state depending on the property and type of work. Many storefronts and offices need review for occupancy, exits, electrical work, plumbing, mechanical systems, alarms, sprinklers, fire safety, accessibility, and signage.

Do not assume that a previous tenant’s approval covers your business. A restaurant, salon, daycare, auto shop, warehouse, assembly space, or fitness studio may create different building and fire questions than a prior office or retail use.

Food businesses

Food rules can involve Oakland County, the State of Michigan, or both. Oakland County Health Division’s Food Safety Program covers many food service activities, including restaurants, festival food booths, mobile food vehicles, foodborne illness investigations, and food safety education. The county uses an online permitting system for food service licensing and renewals.

Michigan’s food service guidance says food service establishments include restaurants, bars, catering kitchens, concessions, food trucks, mobile units, temporary events, and special transitory food units, and that they are licensed by local health departments. Michigan’s agriculture department may instead be the correct agency for businesses that primarily sell, store, manufacture, process, warehouse, or distribute food, such as some grocery, bakery, warehouse, and processing operations.

Michigan also has cottage food rules for certain low-risk foods made in a home kitchen. Cottage food is not a general permission slip for catering, restaurant service, wholesale food, or all home food sales. Check the current Michigan cottage food page, your local zoning rules, and any farmers market, event, or city rules before selling.

Mobile vendors, temporary merchants, and events

A mobile vendor may need several approvals at once. A food truck may need health approval, state tax registration, local vendor or peddler approval, event permission, fire inspection for propane or cooking equipment, and permission from the property owner or event organizer. A non-food temporary merchant may still need local peddler, temporary merchant, sidewalk, right-of-way, or special event approval.

Because Oakland County has many municipalities, a vendor who works in more than one city or township may need to check each location separately.

Contractors and building trades

Michigan regulates many construction and trade activities. State guidance says a contractor who offers to do residential building or remodeling work for a total price of $600 or more in labor and materials may need a residential builder or maintenance and alteration contractor license through LARA. Other trades, such as electrical, plumbing, mechanical, boiler, and elevator work, can have separate state licensing rules.

State licensing does not replace local permits. A contractor may still need project permits from the local building department, trade permits, inspections, right-of-way permits, road permits, local contractor registration, insurance or bonding documentation, or municipal business licensing depending on the city, township, project, and trade.

Body art, pools, wells, septic, and environmental health

Oakland County Environmental Health handles several non-restaurant issues that can affect small businesses. The county’s official materials identify environmental health work involving food service licensing and inspection, on-site sewage disposal, on-site water systems, public pools, body art practitioners, daycare and group-care environmental inspections, campgrounds, pest-related investigations, and outbreak investigations.

If your business depends on a private well, septic system, pool, body art activity, camp, daycare, or similar environmental health issue, check Oakland County Health Division before opening.

Short-term rentals and rental property

Short-term rental and rental registration rules are usually local. A city, village, or township may control zoning, rental inspection, occupancy, parking, nuisance rules, fire safety, and local registration. Oakland County does not appear to operate a countywide short-term rental business license for every host, but a host may still have local, state tax, platform, insurance, and private covenant issues.

Checks by business type

Use this section as a starting checklist. It cannot replace the official rules for your exact address and business activity.