Union Township covers the northwest corner of Branch County, where farmland meets the cluster of lakes around Union City and the smaller communities nearby. The Saint Joseph River runs through Union City and the township, and the lakes give parts of the area a cottage-country feel, while the rest stays rural and agricultural.
At a glance
State millage data currently shows about 27.6 to 42.7 mills for a primary home. 3 school districts cover the community, so the parcel and PRE status decide the final bill.
Practical directory
Common home and paperwork paths
Start with the Michigan guide that matches the job. For a parcel, bill, permit, or recorded document in Union Township, confirm the final answer with the local or county office shown farther down this page.
- Delinquent property tax Get help before the redemption date Find the foreclosing unit, exact payoff, assistance programs, counseling, and legal-help paths.
- Utility shutoff or past-due bill Work the utility-help sequence Call the provider, apply for emergency relief, use 2-1-1, and ask about household protections.
- Essential home repair Find repair or weatherization help Match the repair, household, service area, and rural status to programs that may actually fit.
- Home and estate Handle a home after someone dies Keep the property stable, find the deed and authority to act, and choose the right estate or title path.
- Manufactured home Transfer or repair the home title Start with the Secretary of State path for a sale, missing title, lien, or legal affixture to land.
- Buying rural or waterfront land Check the parcel before closing Work through access, survey, buildability, well, septic, wetlands, title, and local office checks.
Who handles what
Send the question to the right office
Start local for a parcel, tax bill, permit, or housing rule. Move to the county or a district when the record or service covers more than one community.
Assessment, PRE, current tax bill, or Board of Review Union Township assessor or treasurer
Start with the Union Township office shown on the assessment notice or tax bill. The assessor handles value and exemptions; the treasurer handles the current summer or winter bill.
Rental registration, building permit, or code problem Union Township building, rental, or code office
The enforcing agency can be the municipality, county, or state, and electrical, mechanical, and plumbing work may go to different places.
Marriage license, local record, deed, or delinquent tax Branch County offices
The clerk, register of deeds, and county treasurer handle different parts of this work. The county page separates them for you.
Private well, septic system, local health, or trial court County, district, or court finder
A health district or court can serve more than one community. The county page links to the official statewide finders.
The practical stuff
Buying, owning, or selling in Union Township
The seller's tax bill may not be your tax bill.
2025 property-tax snapshot
- Primary home (PRE)
- 27.6346 mills - 42.711 mills
- Other property / non-homestead
- 45.6346 mills - 60.0249 mills
- School districts available
- 3 in Union Township
One mill means $1 per $1,000 of Taxable Value. Rate rows come from the official 2025 Michigan Treasury report. Last reviewed July 12, 2026.
What these local words mean
- Primary home (PRE)
- A home you own and live in as your main home. PRE stands for Principal Residence Exemption and can lower the school operating tax.
- Non-homestead
- Property that is not treated as the owner's main home, such as a rental, vacation home, or second home.
- Assessor
- The local office that estimates and records property values and exemptions.
- Treasurer
- The local office that collects property tax payments and can confirm bill timing.
Open the local property-tax calculator
Enter a purchase price and choose the school district to estimate the first full-year bill.
Michigan homebuyer tax calculator
See the tax bill after you buy.
Where is the house?
Pick the county, city or township, and school district. We use the official 2025 tax rates published by Michigan Treasury.
Not sure of the school district? Check the property listing. It is usually under "Schools."
Need to double-check the exact parcel? Use the official state estimator at treas-secure.state.mi.us/ptestimator or call the local treasurer. Rates can change across city, township, village, and school district lines, so the exact parcel matters.
Why a buyer's property-tax bill can change after a sale
In Michigan, property tax isn't figured on what you paid — it's figured on the home's Taxable Value, with the local millage rates applied to that number. While one owner keeps the home, Proposal A caps how fast that Taxable Value can climb. When the home sells, the cap usually comes off — this is called uncapping — and the Taxable Value resets toward the State Equalized Value, or SEV, which tends to run about half of a home's market value.
That reset is the part that catches buyers: a longtime owner may have been paying on an old, capped number, so the year after you buy, yours can jump to the new one — and your first full-year bill can land well above what the seller was paying. In Union Township, your rate can vary by parcel. The school district tied to the property matters, and 3 school districts cover Union Township. For a primary home with PRE, Michigan's main-home exemption, rates currently run about 27.6 to 42.7 mills. Without PRE, non-homestead rates run about 45.6 to 60 mills. The calculator above turns those local rates into your actual number.
If this will be your main home, make sure that PRE is filed with the local assessor — it can lift up to 18 school-operating mills off the bill. Rentals, vacation homes, and second homes stay on the higher non-homestead rate.
The tax reset is the big one, but it isn't the whole checklist. Out here, a home beyond city water and sewer usually comes with a private well and septic system worth testing before you close. It's also worth checking whether the address sits in a floodplain, and whether you'll owe a city income tax where you live or work. The buying-a-home guide walks through the rest.
School districts and exact rate rows
Coldwater Community
Primary home (PRE) 27.6346 mills · non-homestead 45.6346 mills
Union City Comm Schools
Primary home (PRE) 30.6863 mills · non-homestead 48.0002 mills
Union City Comm Schools (Village of Union City)
Primary home (PRE) 42.711 mills · non-homestead 60.0249 mills
Local rules and costs to check
Note-sized practical catches tied to Union Township: taxes, property rules, permits, local costs, or other things worth checking before you decide.
Local check
Buying on (or near) a Branch County lake?
Branch County lake homes can come with legal lake levels, lake special assessments, lake associations, and lake-specific boating rules.
Local check
Outside town, you're probably on a well and septic
Most Branch County township homes use private wells and septic systems, and the county does not require a sale-time inspection.
Local check
Buying in a township? Watch for special assessments on top of your taxes
Michigan township buyers should check for special assessments that can add separate road, sewer, water, lighting, sidewalk, or drain charges.
Local check
In Michigan, you get two property-tax bills a year — not one
Most Michigan property owners get separate summer and winter tax bills, with local rules deciding what lands on each bill.
Local context
A little context for Union Township
A few things to know before buying: lake homes can carry legal lake levels and lake special assessments, and homes away from the water are usually on a private well and septic. The township can add special assessments, and your property taxes arrive as two bills a year. The notes below cover all of it.
Union City's early iron furnace
An 1847 furnace at Union City produced what was reportedly the first iron smelted from Michigan ore, then pivoted to making plows when bog iron proved too poor.
Coldwater's lake chain and Tibbits Opera House
South of Coldwater, nine named lakes and navigable channels make up the Coldwater-Marble chain; downtown, the 1882 Tibbits Opera House still hosts performances.
Nearby places
The closest Michigan Porch pages to Union Township. Open one to read it, or put it side by side with Union Township — tax rates, school districts, and city income tax.
Compare Union Township with a neighbor →Next steps
What to check next for Union Township
Use the county office map for records and services, or follow the home path that matches what you are doing now.
- County Open Branch County See the county page for other cities, townships, villages, local notes, and the county-wide tax snapshot. Open county page →
- Homeowner Keep the house on track Use one calm directory for tax notices, insurance, contractors, permits, records, and repairs. Open homeowner guide →
- Seller Plan the Michigan closing Walk through disclosure, title, transfer tax, PRE rescission, and the records worth keeping. Open seller guide →
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