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Single Family ResidenceResidential
$334,658$232 / 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

309 ISLAND DR

RICHARDSON, TX 75081
4
Beds
2
Baths
1,444 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1961
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

$335K
$290K low$379K 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.$334,658
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$267,726

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,189 (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.$335,500 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$100,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$235,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$306,090
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$335,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDALLAS
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Central
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.Covered
PoolWhether the property has a pool, and what kind, such as in-ground.No

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
Mark Twain Elementary SchoolC+
Elementary · Grades PK–6 · 0.6 mi
M
Apollo Junior High SchoolC+
Middle · Grades 7–8 · 1.1 mi
H
Berkner High SchoolC-
High · Grades 9–12 · 1.6 mi

District: Richardson Independent School District

Neighborhood · ZIP 75081These 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.73
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.28

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.37,696
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,098 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,627
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,191
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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

309 Island Dr 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 82% of homes in Richardson 75081
  • Costs more per square foot than 81% of homes in Richardson 75081
  • Smaller than 85% of homes in Richardson 75081
  • Has a smaller lot than 89% of homes in Mark Twain
  • Older than 87% of homes in Richardson 75081

What homes are worth in Richardson 75081

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

This home
$229K$666K

This home is worth more than 18% of homes in Richardson 75081.

How it measures up in Richardson 75081

The dot is this home. The mark in the middle is the typical home in Richardson 75081.

Estimated value$334,658
CheaperTypical $406,193Pricier

Pricier than 18% of homes nearby

Price per ft²$232
CheaperTypical $205Pricier

Pricier than 81% of homes nearby

Living area1,444 ft²
SmallerTypical 1,996 ft²Bigger

Bigger than 15% of homes nearby

Lot size0.17 ac
SmallerTypical 0.21 acBigger

Bigger than 12% of homes nearby

Year built1961
OlderTypical 1975Newer

Newer than 13% of homes nearby

How 309 Island Dr ranks against every home in each area.
MeasureThis homeMark TwainRichardson 75081Dallas County
Estimated valuepricier than$334,65873% of homes18% of homes54% of homes
Price per ft²pricier than$23263% of homes81% of homes70% of homes
Living areabigger than1,444 ft²61% of homes15% of homes35% of homes
Lot sizebigger than0.17 ac11% of homes12% of homes35% of homes
Year builtnewer than196116% of homes13% of homes29% of homes

About 309 Island Dr

How much is 309 Island Dr, Richardson, TX worth?

The TopHap Estimate for 309 Island Dr, Richardson, TX is $334,658 as of Jul 14, 2026. The likely range is $290,345 to $378,971. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 309 Island Dr, Richardson, TX last sell?

309 Island Dr, Richardson, TX last sold on Sep 3, 2025, according to the county's recorded deed.

How big is 309 Island Dr, Richardson, TX?

309 Island Dr, Richardson, TX has 4 bedrooms, 2 bathrooms, 1,444 square feet of living space and a 0.17-acre lot.

When was 309 Island Dr, Richardson, TX built?

309 Island Dr, Richardson, TX was built in 1961, making it 65 years old. The building has 1 story.

What schools serve 309 Island Dr, Richardson, TX?

309 Island Dr, Richardson, TX is assigned to Mark Twain Elementary School (elementary), rated C+; Apollo Junior High School (middle), rated C+; Berkner High School (high), rated C-. All sit in Richardson Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 309 Island Dr, Richardson, TX compare to other homes in Richardson 75081?

Among the 9,921 homes in Richardson 75081, it is worth more than 18% of them ($334,658 against a typical $406,193), its price per square foot is higher than 81% of them ($232 against a typical $205), it is bigger than 15% of them (1,444 ft² against a typical 1,996 ft²), its lot is bigger than 12% of them (0.17 ac against a typical 0.21 ac) and it is newer than 13% of them (1961 against a typical 1975). Measured against all of Dallas County, it is worth more than 54% 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 309 Island Dr, Richardson, TX?

The 2025 property tax bill for 309 Island Dr, Richardson, TX was $4,189. The county assessed it at $335,500.

Closest homes

More homes in Richardson 75081

Assigned schools

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