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Single Family ResidenceResidential
$69,195$72 / 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 87How 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
Last sold for $37,000 on Jan 12, 2018

18921 ROCKCASTLE ST

GROSSE POINTE, MI 48236
1
Baths
967 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$69K
$61K low$78K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$37,000 · Jan 12, 2018
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.$69,195
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$55,356

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,115 (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.$43,700 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$37,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$87,400

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWAYNE
Lot (acres)The size of the land the home sits on, from county records.0.11
ConstructionThe main material the home's frame and walls are built from.Brick
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 49 ft²

Transaction History(5)

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
Marquette Elementary-Middle SchoolD+
Elementary · Grades PK–8 · 0.3 mi
H
East English Village Preparatory Academy at FinneyD
High · Grades 9–12 · 1.0 mi

District: Detroit Public Schools Community District

Neighborhood · ZIP 48236These 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.24
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
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.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.30,719
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,444 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$140,061
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$167,400
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.53%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
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

18921 Rockcastle 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.

  • Among the least valuable homes in Grosse Pointe 48236
  • Among the lowest price per square foot in Grosse Pointe 48236
  • Smaller than 97% of homes in Grosse Pointe 48236
  • Has a smaller lot than 85% of homes in Grosse Pointe 48236
  • Newer than 73% of homes in Cornerstone Village

What homes are worth in Grosse Pointe 48236

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

This home
$102K$1.7M

This home is worth less than almost all homes in Grosse Pointe 48236.

How it measures up in Grosse Pointe 48236

The dot is this home. The mark in the middle is the typical home in Grosse Pointe 48236.

Estimated value$69,195
CheaperTypical $429,283Pricier

Cheaper than almost all homes nearby

Price per ft²$72
CheaperTypical $233Pricier

Cheaper than almost all homes nearby

Living area967 ft²
SmallerTypical 1,838 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.11 ac
SmallerTypical 0.17 acBigger

Bigger than 15% of homes nearby

Year built1948
OlderTypical 1950Newer

Newer than 44% of homes nearby

How 18921 Rockcastle St ranks against every home in each area.
MeasureThis homeCornerstone VillageGrosse Pointe 48236Wayne County
Estimated valuepricier than$69,19527% of homesalmost no homes15% of homes
Price per ft²pricier than$7226% of homesalmost no homes19% of homes
Living areabigger than967 ft²36% of homes3% of homes18% of homes
Lot sizebigger than0.11 ac38% of homes15% of homes34% of homes
Year builtnewer than194873% of homes44% of homes43% of homes

About 18921 Rockcastle St

How much is 18921 Rockcastle St, Grosse Pointe, MI worth?

The TopHap Estimate for 18921 Rockcastle St, Grosse Pointe, MI is $69,195 as of Jul 14, 2026. The likely range is $60,530 to $77,860. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18921 Rockcastle St, Grosse Pointe, MI last sell?

18921 Rockcastle St, Grosse Pointe, MI last sold on Jan 12, 2018 for $37,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18921 Rockcastle St, Grosse Pointe, MI?

18921 Rockcastle St, Grosse Pointe, MI has 1 bathrooms, 967 square feet of living space and a 0.11-acre lot.

When was 18921 Rockcastle St, Grosse Pointe, MI built?

18921 Rockcastle St, Grosse Pointe, MI was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 18921 Rockcastle St, Grosse Pointe, MI?

18921 Rockcastle St, Grosse Pointe, MI is assigned to Marquette Elementary-Middle School (elementary), rated D+; East English Village Preparatory Academy at Finney (high), rated D. All sit in Detroit Public Schools Community District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18921 Rockcastle St, Grosse Pointe, MI compare to other homes in Grosse Pointe 48236?

Among the 12,570 homes in Grosse Pointe 48236, it is worth more than almost none of them ($69,195 against a typical $429,283), its price per square foot is higher than almost none of them ($72 against a typical $233), it is bigger than 3% of them (967 ft² against a typical 1,838 ft²), its lot is bigger than 15% of them (0.11 ac against a typical 0.17 ac) and it is newer than 44% of them (1948 against a typical 1950). Measured against all of Wayne County, it is worth more than 15% 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 18921 Rockcastle St, Grosse Pointe, MI?

The 2025 property tax bill for 18921 Rockcastle St, Grosse Pointe, MI was $1,115. The county assessed it at $43,700.

Closest homes

More homes in Grosse Pointe 48236

Assigned schools

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