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Single Family ResidenceResidential
$346,317$183 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 95How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $226,000 on Sep 3, 2021

521 CONNECTICUT AVE

MARYSVILLE, MI 48040
3
Beds
2.5
Baths
1,896 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1979
Year BuiltThe year the home was originally built, according to county records.
5
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$346K
$328K low$364K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$226,000 · Sep 3, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,518 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$170,300 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$147,900
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$340,600

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Colonial
CountyST. CLAIR
Lot (acres)The size of the land the home sits on, from county records.0.22
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Gardens Elementary SchoolA+
Elementary · Grades PK–5 · 0.3 mi
M
Marysville Middle SchoolA-
Middle · Grades 6–8 · 0.9 mi
H
Marysville High SchoolB+
High · Grades 9–12 · 1.0 mi

District: Marysville Public Schools

Neighborhood · ZIP 48040These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.22

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.9,938
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,228 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,621
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$85,732
Average tempThe average temperature here across a full year.48°F
Annual precipHow much rain and melted snow falls here in a typical year.32 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

521 Connecticut Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 91% of homes in Marysville 48040
  • Costs more per square foot than 75% of homes in Marysville 48040
  • Bigger than 85% of homes in Marysville 48040
  • Has a smaller lot than 72% of homes in St. Clair County

What homes are worth in Marysville 48040

Each bar is how many homes fall in that price range. The marker is this home.

This home
$75K$417K

This home is worth more than 91% of homes in Marysville 48040.

How it measures up in Marysville 48040

The dot is this home. The mark in the middle is the typical home in Marysville 48040.

Estimated value$346,317
CheaperTypical $210,218Pricier

Pricier than 91% of homes nearby

Price per ft²$183
CheaperTypical $159Pricier

Pricier than 75% of homes nearby

Living area1,896 ft²
SmallerTypical 1,310 ft²Bigger

Bigger than 85% of homes nearby

Lot size0.22 ac
SmallerTypical 0.24 acBigger

Bigger than 34% of homes nearby

Year built1979
OlderTypical 1977Newer

Newer than 57% of homes nearby

How 521 Connecticut Ave ranks against every home in each area.
MeasureThis homeMarysville 48040St. Clair County
Estimated valuepricier than$346,31791% of homes77% of homes
Price per ft²pricier than$18375% of homes65% of homes
Living areabigger than1,896 ft²85% of homes73% of homes
Lot sizebigger than0.22 ac34% of homes28% of homes
Year builtnewer than197957% of homes58% of homes

About 521 Connecticut Ave

How much is 521 Connecticut Ave, Marysville, MI worth?

The TopHap Estimate for 521 Connecticut Ave, Marysville, MI is $346,317 as of Oct 21, 2026. The likely range is $328,481 to $364,153. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Connecticut Ave, Marysville, MI last sell?

521 Connecticut Ave, Marysville, MI last sold on Sep 3, 2021 for $226,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 521 Connecticut Ave, Marysville, MI?

521 Connecticut Ave, Marysville, MI has 3 bedrooms, 2.5 bathrooms, 1,896 square feet of living space and a 0.22-acre lot.

When was 521 Connecticut Ave, Marysville, MI built?

521 Connecticut Ave, Marysville, MI was built in 1979, making it 47 years old. It is a colonial home. The building has 5 stories.

What schools serve 521 Connecticut Ave, Marysville, MI?

521 Connecticut Ave, Marysville, MI is assigned to Gardens Elementary School (elementary), rated A+; Marysville Middle School (middle), rated A-; Marysville High School (high), rated B+. All sit in Marysville Public Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Connecticut Ave, Marysville, MI compare to other homes in Marysville 48040?

Among the 4,160 homes in Marysville 48040, it is worth more than 91% of them ($346,317 against a typical $210,218), its price per square foot is higher than 75% of them ($183 against a typical $159), it is bigger than 85% of them (1,896 ft² against a typical 1,310 ft²), its lot is bigger than 34% of them (0.22 ac against a typical 0.24 ac) and it is newer than 57% of them (1979 against a typical 1977). Measured against all of St. Clair County, it is worth more than 77% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 521 Connecticut Ave, Marysville, MI?

The 2025 property tax bill for 521 Connecticut Ave, Marysville, MI was $5,518. The county assessed it at $170,300.

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