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Single Family ResidenceResidential
$94,900$93 / 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 85How 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

21 ROBERT AVE

FERGUSON, MO 63135
2
Beds
1
Baths
1,015 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1939
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$95K
$80K low$110K 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.$94,900
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$75,920

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,481 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$21,470 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$2,790
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$18,680
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$20,390
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$113,000

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.46
60
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
86
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
64
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
4
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.8 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
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.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Bungalow
CountyST. LOUIS
Lot (acres)The size of the land the home sits on, from county records.0.13
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
HeatingThe type of heating system in the home.Electric
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Basement
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.Deck · 90 ft²Patio · 331 ft²

Transaction History(3)

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.

M
Ferguson Middle SchoolC-
Middle · Grades 7–8 · 0.4 mi
E
Walnut Grove Primary School
Elementary · Grades PK–2 · 0.9 mi
H
McCluer High SchoolF
High · Grades 9–12 · 1.3 mi

District: Ferguson-Florissant School District

Neighborhood · ZIP 63135These 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.136
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.126

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.87%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.16%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.18,386
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,955 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$61,061
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$76,146
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.39 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%

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.Yes

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

21 Robert 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 less than 90% of homes in St. Louis County
  • Costs less per square foot than 90% of homes in St. Louis County
  • Smaller than 78% of homes in St. Louis County
  • Has a smaller lot than 94% of homes in Saint Louis 63135
  • Older than 88% of homes in St. Louis County

What homes are worth in Saint Louis 63135

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

This home
$46K$264K

This home is worth more than 43% of homes in Saint Louis 63135.

How it measures up in Saint Louis 63135

The dot is this home. The mark in the middle is the typical home in Saint Louis 63135.

Estimated value$94,900
CheaperTypical $100,677Pricier

Pricier than 43% of homes nearby

Price per ft²$93
CheaperTypical $94Pricier

Pricier than 50% of homes nearby

Living area1,015 ft²
SmallerTypical 1,064 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.13 ac
SmallerTypical 0.19 acBigger

Bigger than 6% of homes nearby

Year built1939
OlderTypical 1952Newer

Newer than 17% of homes nearby

How 21 Robert Ave ranks against every home in each area.
MeasureThis homeSaint Louis 63135St. Louis County
Estimated valuepricier than$94,90043% of homes10% of homes
Price per ft²pricier than$9350% of homes10% of homes
Living areabigger than1,015 ft²44% of homes22% of homes
Lot sizebigger than0.13 ac6% of homes15% of homes
Year builtnewer than193917% of homes12% of homes

About 21 Robert Ave

How much is 21 Robert Ave, Ferguson, MO worth?

The TopHap Estimate for 21 Robert Ave, Ferguson, MO is $94,900 as of Jul 14, 2026. The likely range is $80,298 to $109,502. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Robert Ave, Ferguson, MO last sell?

21 Robert Ave, Ferguson, MO last sold on Dec 21, 2020, according to the county's recorded deed.

How big is 21 Robert Ave, Ferguson, MO?

21 Robert Ave, Ferguson, MO has 2 bedrooms, 1 bathrooms, 1,015 square feet of living space and a 0.13-acre lot.

When was 21 Robert Ave, Ferguson, MO built?

21 Robert Ave, Ferguson, MO was built in 1939, making it 87 years old. It is a bungalow home. The building has 1 story.

What schools serve 21 Robert Ave, Ferguson, MO?

21 Robert Ave, Ferguson, MO is assigned to Ferguson Middle School (middle), rated C-; Walnut Grove Primary School (elementary); McCluer High School (high), rated F. All sit in Ferguson-Florissant School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Robert Ave, Ferguson, MO compare to other homes in Saint Louis 63135?

Among the 8,027 homes in Saint Louis 63135, it is worth more than 43% of them ($94,900 against a typical $100,677), its price per square foot is higher than 50% of them ($93 against a typical $94), it is bigger than 44% of them (1,015 ft² against a typical 1,064 ft²), its lot is bigger than 6% of them (0.13 ac against a typical 0.19 ac) and it is newer than 17% of them (1939 against a typical 1952). Measured against all of St. Louis County, it is worth more than 10% 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 21 Robert Ave, Ferguson, MO?

The 2024 property tax bill for 21 Robert Ave, Ferguson, MO was $1,481. The county assessed it at $21,470.

Closest homes

More homes in Ferguson 63135

Assigned schools

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