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Residential (General/Single)Residential
$248,139
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 84How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

18 PROSPECT ST

SAINT IGNACE, MI 49781
0
Baths
0.28 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$248K
$208K low$289K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$248,139
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$198,511

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,448 (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.$305,300 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$273,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$610,600

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.20
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
3
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
40
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
58
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
2
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.18 in
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyMACKINAC
Lot (acres)The size of the land the home sits on, from county records.0.28
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
St Ignace Elementarymiddle SchoolC
Elementary · Grades PK–8 · 0.8 mi
H
Lasalle High SchoolB-
High · Grades 9–12 · 0.8 mi

District: St. Ignace Area Schools

Neighborhood · ZIP 49781These 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.109
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.80
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.12

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.73%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.14%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.16%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.2.4%
PopulationHow many people live in this area.3,767
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.33 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,324
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$70,384
Average tempThe average temperature here across a full year.42°F
Annual precipHow much rain and melted snow falls here in a typical year.30 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.47%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.No

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

18 Prospect St 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 73% of homes in Saint Ignace 49781
  • Has a smaller lot than 78% of homes in Mackinac County

What homes are worth in Saint Ignace 49781

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

This home
$62K$539K

This home is worth more than 73% of homes in Saint Ignace 49781.

How it measures up in Saint Ignace 49781

The dot is this home. The mark in the middle is the typical home in Saint Ignace 49781.

Estimated value$248,139
CheaperTypical $196,364Pricier

Pricier than 73% of homes nearby

Lot size0.28 ac
SmallerTypical 0.51 acBigger

Bigger than 31% of homes nearby

How 18 Prospect St ranks against every home in each area.
MeasureThis homeSaint Ignace 49781Mackinac County
Estimated valuepricier than$248,13973% of homes51% of homes
Lot sizebigger than0.28 ac31% of homes22% of homes

About 18 Prospect St

How much is 18 Prospect St, Saint Ignace, MI worth?

The TopHap Estimate for 18 Prospect St, Saint Ignace, MI is $248,139 as of Jul 14, 2026. The likely range is $207,622 to $288,656. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Prospect St, Saint Ignace, MI last sell?

18 Prospect St, Saint Ignace, MI last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 18 Prospect St, Saint Ignace, MI?

18 Prospect St, Saint Ignace, MI is assigned to St Ignace Elementarymiddle School (elementary), rated C; Lasalle High School (high), rated B-. All sit in St. Ignace Area Schools. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18 Prospect St, Saint Ignace, MI compare to other homes in Saint Ignace 49781?

Among the 2,054 homes in Saint Ignace 49781, it is worth more than 73% of them ($248,139 against a typical $196,364) and its lot is bigger than 31% of them (0.28 ac against a typical 0.51 ac). Measured against all of Mackinac County, it is worth more than 51% 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 18 Prospect St, Saint Ignace, MI?

The 2025 property tax bill for 18 Prospect St, Saint Ignace, MI was $11,448. The county assessed it at $305,300.

Closest homes

More homes in Saint Ignace 49781

Assigned schools

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