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Monroe County, Michigan

Mortgage Broker in Petersburg, MI

The City of Petersburg is about half a square mile of town blocks inside a much larger 49270 ZIP code, so your numbers start from the parcel, and your loan is shopped across multiple wholesale lenders by one Michigan broker.

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Buying a home in Petersburg

Tucked into the River Raisin farm country of southern Monroe County, Petersburg is one of Michigan's smallest cities by land area, just 0.49 square miles of in-town blocks surrounded by Summerfield and Ida township farmland. The city itself counts roughly 1,170 residents, while the wider 49270 ZIP reaches about 5,600 people across the surrounding rural townships (Data USA). From City Hall it is about 7 miles to Dundee, 18 to downtown Adrian, 19 to downtown Monroe and about 28 to downtown Toledo by road. For buyers, that combination of small-town character, real acreage, and a short hop to several job centers keeps demand steady even with very thin local inventory.

By the numbers

Petersburg housing and mortgage snapshot

Values move. Treat these as orientation and let us pull current figures for the address you are considering.

$270,000

Typical home value, from the market research on this page

+46%

Typical rise in taxable value the year after a home sells, 2026 Uncapping Study

1.10%

Property tax current owners pay, as a share of value. A buyer's bill can reset higher the year after a sale

1

Residential ZIP code: 49270

What financing looks like in Petersburg

The City of Petersburg's assessor counted 33 improved residential sales inside the city from April 2023 through March 2025. The middle sale was $195,000, the range ran from $64,000 to $320,000, and 12 of the 33 closed at $250,000 or more. The typical value near $270,000 on this page describes the whole 49270 ZIP code, which takes in farmhouses and acreage in the surrounding townships, and the Census puts the median owner estimate inside the city at $215,500 for 2020 to 2024. All of those figures sit far under the 2026 FHA limit for Monroe County, $541,287, and the 2026 conforming limit of $832,750, so the loan choice usually comes down to your down payment, your credit and whether you have served.

The house and the land shape the loan more than the price does. About three in ten homes in the city went up before 1940, so plan on an inspection that looks closely at the roof, wiring, foundation and plumbing, and an FHA or VA appraisal may ask for repairs before closing. The River Raisin bends along the north and west edges of town, and about 6% of the city's land sits in FEMA's high-risk flood zone. The assessor's land code map also shows two condominium projects, Thompson River Bend Villas on River Dale Drive and Pete Square Condos, and a condo usually needs its association to pass the lender's review. First-time buyers within the income limits can pair a MI Home Loan with MSHDA's MI 10K, $10,000 toward the down payment, repaid when you sell, refinance, pay off the mortgage or stop living in the home. Its $566,355 price cap sits well above a typical Petersburg sale.

Outside the city line the questions change. The city's water system serves about 486 connections, all inside the city limits, so for a township home ask whether it has its own well and septic system and get the records and test results early. If the parcel carries acreage, a pole barn or farm ground, ask how the lender will value the land, because a residential mortgage often counts the house and only part of the acreage.

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Same Summerfield Schools, different bill: a homestead inside the City of Petersburg carried 37.31 mills in 2025, against 27.21 just across the line in Summerfield Township.

The market

The Petersburg housing market

The $270,000 typical value on this page is a figure for the whole 49270 ZIP. Inside the city, the assessor's latest sales study counted 33 home sales from April 2023 to March 2025, with a middle sale of $195,000. The big demand driver here is land: buyers want farmhouses, acreage, and pole-barn parcels that rarely come up inside the tight ZIP.

Sub-markets

Petersburg, the city and the 49270 ZIP

The 49270 ZIP code covers about 80 times the land of the city it is named for, so a Petersburg address can be taxed by any of six governments. Land shares come from Census boundaries, owner values are Census estimates for 2020 to 2024, and the rise in taxable value after a sale is from our 2026 Uncapping Study.

City of Petersburg: about 1% of the ZIP

The town blocks around Center Street, served by city water and sewer and all in Summerfield Schools. Census owner median $215,500, typical home from 1955, and taxable value typically rises about 46% the year after a sale.

Summerfield Township: about 70%

Farms and rural homes on every side of town, mostly in Summerfield Schools, with Britton Deerfield Schools on the west side. Census owner median $284,700 across the township, typical home from 1971, and a rise of about 43% after a sale.

Ida Township: about 18%

The east side of the ZIP toward the village of Ida, mostly in Ida Public Schools, with a slice of Summerfield Schools near Lulu Road. Census owner median $317,100 across the township, typical home from 1975, and a rise of about 37% after a sale.

Dundee, Whiteford and Bedford: about 11%

Dundee Township holds about 6% of the ZIP in the northeast, Whiteford Township about 4% in the south and Bedford Township about 1%. Each has its own assessor and millage, and about a sixth of the Whiteford piece sits in FEMA's high-risk flood zone.

The city's piece at US-23

The city also owns a detached commercial tract at the US-23 exit 13 interchange on Ida West Road, about 3 miles east of downtown, along Tandem Court and Road Commission Drive. It carries no homes, but it explains why maps show a second patch of Petersburg out by the freeway.

Where to look

Petersburg neighborhoods

Center Street and the downtown blocks

West and East Center Street, from the west end of town to Elizabeth Street, the commercial heart of the city on the assessor's land code map. City Hall is at 24 E. Center Street, the Summerfield-Petersburg library and community room at 60 E. Center Street, and Summerfield Township's own hall at 15 E. Center Street, so the township is run from inside the city. Homes here sit beside storefronts. 266 E. Center Street sold for $185,000 in May 2023.

Walnut and Chestnut streets

The middle of the street grid, from Davis Street east past Wood Street toward South Division Street. Small lots and older houses, most of them detached. 282 E. Walnut Street sold for $280,000 in January 2025, while 70 W. Chestnut Street changed hands twice in 2024, at $130,000 in May and $165,000 in October, which is a reminder to read a home's sale history before you trust one comparable.

Vesey, Madison and Cass streets

The southern blocks between Davis Street and South Division Street, down to Cass Street. The assessor's sales map shows a run of sales here from about $175,000 to $288,000 between 2023 and 2025, including 410 Saline Street at $194,000 in March 2024. A few parcels on the assessor's map are small apartment buildings rather than houses.

South Division Street and Albain Road

The southeast corner of town, where South Division Street meets Albain Road and Forrest Avenue, with some of the city's larger residential parcels on the east side. 630 S. Division Street sold for $285,000 in April 2024 and 732 S. Division Street for $199,000 in May 2024, about the spread of the city as a whole.

McNeil Drive, Reflection Court and Valentine Drive

A pocket of curving streets at the south end, off the road toward Teal Road, laid out around a small pond on Reflection Court. The assessor groups it with Rose Road in its own pricing area. 3825 McNeil Drive sold for $239,900 in December 2024, 3810 McNeil Drive for $256,000 in February 2025, and a third home nearby for $265,000 in November 2024.

River Dale Drive and Thompson River Bend

The west edge of the city, where Thompson River Bend Villas line River Dale Drive near the bend in the River Raisin. The assessor treats it as its own above-average pricing area, and one west-end parcel sold twice in nine months, at $308,300 in May 2023 and $320,000 in February 2024. Part of this edge sits in FEMA's high-risk flood zone, so check the exact lot.

Rose Road and the west side

Rose Road runs southwest out of town past larger lots and a commercial tract on the assessor's map. 338 Rose Road sold for $181,000 in June 2024 and 360 Rose Road for $185,000 in July 2023. The River Raisin flood zone reaches this end of the city too.

Petersburg Road, Wittman Drive and North Division Street

The part of town north of Railroad Street, where Petersburg Road and Ida West Road leave the city, with Wittman Drive and North Division Street off Ida West Road. 165 Petersburg Road sold for $320,000 in May 2024, one of the highest in the study, and 48 N. Division Street for $175,000 in November 2023. FEMA's high-risk zone follows the River Raisin behind the north edge of town.

Summerfield Township around town

The township land wrapped around the city, east along Ida West Road and Railroad Street toward US-23. Summerfield Schools' campus at 17555 Ida West Road and the volunteer fire station at 4521 Sylvania-Petersburg Road both carry Petersburg addresses but sit in the township. Census figures for this block group show owner values near $261,000 with a wide margin and a typical home from 1973.

Summerfield Township south

Farm country south of town toward Todd Road along Sylvania-Petersburg Road. Every home counted here is a detached house, nine in ten owner-occupied, with owner values near $328,100 and a typical home from 1978.

Summerfield Township west, the Deerfield Road side

West and southwest of town along Deerfield Road, the oldest housing in the ZIP: a typical home from 1951 and about a third built before 1940. Owner values sit near $242,200 with a wide margin. About a sixth of this area's land is in Britton Deerfield Schools rather than Summerfield, which moves the tax rate.

Ida and Dundee township side

The eastern quarter of the ZIP, around Lulu Road in Ida Township and up into Dundee Township near Gloff Road. Most of it is in Ida Public Schools, not Summerfield. Ida Township as a whole shows owner values near $317,100 and a typical home from 1975, and its block groups run from about $289,200 to $357,600.

Schools and commute

Schools

Every parcel inside the City of Petersburg is in Summerfield Schools, and Michigan Treasury's 2025 homestead total in the city was 37.31 mills. The 49270 ZIP code is a different story. By Census school district boundaries, Summerfield covers about 70% of the ZIP's land, Ida Public Schools about 21% on the east side in Ida and Dundee townships, Britton Deerfield Schools about 4% in western Summerfield Township, Whiteford Agricultural Schools about 3% and Bedford Public Schools about 2% in the south. The district moves the township bill as well: 2025 homestead totals in Summerfield Township were 27.21 mills with Summerfield, 29.11 with Whiteford and 29.89 with Britton Deerfield, and in Ida Township 24.65 with Summerfield and 25.44 with Ida. A Petersburg mailing address does not settle the district. The parcel record does.

Commute

US-23 runs about 3 miles east of town, reached at exit 13, the Ida West Road interchange, about 6 minutes from City Hall at 24 E. Center Street outside rush hour, and exit 9 at Summerfield Road serves the south end of the ZIP. From City Hall it is about 7 miles and 11 minutes to Dundee, 19 miles and 28 minutes to downtown Monroe, the county seat, 18 miles and 32 minutes to downtown Adrian, 32 miles and 41 minutes to downtown Ann Arbor, and about 28 miles and 36 minutes to downtown Toledo by road. The Toledo Assembly Complex, the Jeep plant that counted about 6,100 workers in 2022, is about 41 minutes away, Detroit Metro Airport about 53 minutes and downtown Detroit about an hour and a quarter. Census figures put the average one-way commute for city residents near 29 minutes, with about one commuter in five traveling 45 minutes or more and about one worker in nine working from home.

Michigan property taxes

Petersburg property taxes after you buy

The year after a Michigan home sells, its taxable value resets to half of the assessor's market value, so the seller's tax bill is not your tax bill.

In the City of Petersburg, our 2026 Uncapping Study found taxable value typically rises about 46% the year after a sale. On a $275,000 home, near the typical Petersburg value, that is roughly $1,620 more in first-year tax at the local median homestead millage. We build your payment on that post-sale number.

Looking at a Petersburg address? Our Michigan property tax calculator finds that property's published 2025 millage and works out the tax to plan for after you buy.

How Michigan taxable value works

In Samantha's words

Don't build your budget around somebody else's tax bill. The seller's tax history tells us something about the property. It does not automatically tell us what your taxes are going to look like as the new owner.

2025 homestead millage

What sets a 49270 tax bill

Michigan Treasury's 2025 total rates for a homestead, in mills. One mill is $1 for each $1,000 of taxable value. The first card is inside the city, the rest are the townships that share the ZIP code.

City of Petersburg: 37.31 mills

Summerfield Schools, the only district in the city. Roughly $3,731 a year for each $100,000 of taxable value. A rental or second home pays 55.31.

Summerfield Township: 27.21 mills

The same Summerfield Schools outside the city line. About $1,009 less a year per $100,000 of taxable value than inside the city.

Britton Deerfield and Whiteford: 29.89 and 29.11

The parts of Summerfield Township in those two districts, on the west and south sides of the township. About $190 to $268 more a year per $100,000 than the township's Summerfield parcels.

Ida Township: 24.65 to 25.44 mills

24.65 with Summerfield Schools and 25.44 with Ida Public Schools, the lowest totals in the ZIP.

Dundee Township: 25.26 to 30.08 mills

Outside the village of Dundee, from 25.26 with Summerfield Schools to 30.08 with Britton Deerfield, and 26.05 with Ida Public Schools, the district on most of the 49270 piece.

After the sale

Our 2026 Uncapping Study found taxable value typically rises about 46% the year after a sale in the city, 43% in Summerfield Township and 37% in Ida Township, so the seller's bill is a poor guide to yours.

Local resources

Check Petersburg records yourself

The official offices behind the tax and school details on this page.

Before you write an offer

Petersburg details to pin down early

Each of these is particular to Petersburg and the 49270 ZIP, and each is easier to sort out while you can still negotiate.

  • City or township. The city's Assessing and Building page lists its assessor, office hours and the city's sales and land value studies, and the office answers at 734-279-1210. Township parcels go to the Summerfield Township assessor at 734-279-1214, whose hall is also on Center Street.
  • The water account. Inside the city, water and sewer are billed quarterly by the city. The Water and Sewer page posts every annual water quality report, and the water department answers at 734-279-1978. Outside the city, ask for the well and septic records.
  • The River Raisin edge. Lots on the north and west edges of town and along the river and drains in the townships are the ones most likely to sit in a high-risk flood zone. Search the address on the Flood Map Service Center before you make the offer.
  • Acreage and farm ground. A split, a combination or a new pond runs through local rules. The township's forms and ordinances page carries its land division, pond and qualified agricultural forms.
  • Two forms after closing. The Property Transfer Affidavit and the Principal Residence Exemption affidavit go to the assessor for the unit that taxes the home. Without the exemption, a home in the city is billed at the 55.31-mill non-homestead total.

The figures for the township areas come from small-area Census estimates (American Community Survey, five years ending 2024), which can miss by a wide margin, and the in-city sale prices are the assessor's own, so we check current sales for any home you are serious about.

What our clients say

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Petersburg mortgage questions

If yours is not here, ask it on the call. There are no dumb questions.

What do homes inside the City of Petersburg sell for?

The city assessor’s study counted 33 improved residential sales from April 2023 through March 2025, with a middle sale of $195,000 and a range of $64,000 to $320,000. The typical value near $270,000 on this page covers the whole 49270 ZIP code, acreage in the townships included, and the Census median owner estimate inside the city was $215,500 for 2020 to 2024. We check recent sales for the exact address before you write an offer.

Often not. The city is only about 1.3% of the ZIP’s land. Most 49270 addresses are in Summerfield Township, with others in Ida, Dundee, Whiteford and Bedford townships. The Census geocoder places 165 Petersburg Road inside the city, while 17555 Ida West Road and 4521 Sylvania-Petersburg Road, both with Petersburg addresses, are in Summerfield Township. The city assessor answers at 734-279-1210 and the township assessor at 734-279-1214, so we confirm the parcel first.

Inside the city it is always Summerfield Schools, at 37.31 homestead mills in 2025. Across the ZIP, Summerfield covers about 70% of the land, Ida Public Schools about 21%, Britton Deerfield about 4%, Whiteford about 3% and Bedford about 2%. Township rates run from 24.65 mills in Ida Township with Summerfield to 29.89 in Summerfield Township with Britton Deerfield.

The school and county levies are shared, so the gap is mostly the city’s own levies against the township’s. In 2025 a homestead in the City of Petersburg carried 37.31 mills against 27.21 in Summerfield Township with the same school district, about $1,009 more a year on each $100,000 of taxable value. Our 2026 Uncapping Study found taxable value in the city typically rises about 46% the year after a sale, against about 43% in Summerfield Township and 37% in Ida Township.

Inside the city, the city does. Since late 2003 Petersburg has used Monroe’s water, drawn from Lake Erie and treated at Monroe’s plant, and in 2021 and 2022 the city replaced its water mains, valves, hydrants, meters and the service lines in the right of way, finding 4 lead lines and 1 galvanized line on the owners’ side, which were then replaced. The system serves about 486 connections. Billing questions go to the city office at 734-279-1210 and the water department is at 734-279-1978. In the township, ask whether the home has a private well and septic system.

Most homes do not, but some do. Our sample of FEMA’s flood map puts about 6% of the city’s land in the high-risk zone, all of it along the River Raisin on the north and west edges of town, and about 3% of the wider 49270 ZIP, mostly along the river, Sink Creek and county drains. These are approximate Zone A areas without published flood elevations. FEMA says homes in the high-risk zone with a government-backed loan must carry flood insurance, so look up the address and get a quote before you make an offer.

Usually, with planning. A residential mortgage often values the house and only part of the land, so tell us early about acreage, barns or farm ground. If the parcel is farmed, ask the Summerfield Township assessor about its qualified agricultural status, since the township’s forms page carries the forms to claim or keep it, and check the township’s land division and pond rules before you plan a split or a pond.

The city contracts with the Monroe County Sheriff for one deputy shared with Summerfield Township, and the all-volunteer Summerfield Township fire department serves both from its station on Sylvania-Petersburg Road. Trash goes out on Thursdays through private haulers, city residents can drop yard waste behind the municipal building, and water and sewer bills come quarterly from the city.

Communities near Petersburg

Monroe County overview

Guides for Petersburg buyers

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Align Lending LLC, NMLS #2041154. Samantha Shelton, NMLS 1647301. Equal Housing Opportunity. Licensed in Michigan, Ohio, North Carolina, Florida, Louisiana and Texas. Figures on this page are market research for orientation, not a quote. This page is for educational purposes only. It is not a credit decision, a preapproval, a commitment to lend, or an offer of credit.

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