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Single Family ResidenceResidential
$290,015$144 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $223,100 on Jun 3, 2020

303 MAMMOTH SPRINGS LN

DICKINSON, TX 77539
2
Baths
2,017 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.
2001
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$290K
$278K low$302K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$223,100 · Jun 3, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,195 (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.$317,222 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$53,760
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$263,462
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$295,710
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$317,222

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.37
99
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
40
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
50
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.111 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.80%
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.1 percent flood zone

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.Conventional
CountyGALVESTON
Lot (acres)The size of the land the home sits on, from county records.0.13
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
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
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 · 262 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.

E
Calder Road Elementary SchoolA-
Elementary · Grades PK–4 · 0.8 mi
M
Dickinson Junior High SchoolB
Middle · Grades 7–8 · 4.1 mi
H
Dickinson High SchoolC
High · Grades 9–12 · 4.2 mi

District: Dickinson Independent School District

Neighborhood · ZIP 77539These 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.68
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.23

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.53,664
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,004 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,796
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,049
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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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

303 Mammoth Springs Ln 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.

  • Costs less per square foot than 79% of homes in Galveston County
  • Bigger than 65% of homes in Dickinson 77539
  • Has a smaller lot than 88% of homes in Dickinson 77539
  • Older than 71% of homes in Bay Colony

What homes are worth in Dickinson 77539

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

This home
$143K$749K

This home is worth more than 47% of homes in Dickinson 77539.

How it measures up in Dickinson 77539

The dot is this home. The mark in the middle is the typical home in Dickinson 77539.

Estimated value$290,015
CheaperTypical $295,000Pricier

Pricier than 47% of homes nearby

Price per ft²$144
CheaperTypical $161Pricier

Pricier than 27% of homes nearby

Living area2,017 ft²
SmallerTypical 1,733 ft²Bigger

Bigger than 65% of homes nearby

Lot size0.13 ac
SmallerTypical 0.2 acBigger

Bigger than 12% of homes nearby

Year built2001
OlderTypical 2002Newer

Newer than 49% of homes nearby

How 303 Mammoth Springs Ln ranks against every home in each area.
MeasureThis homeBay ColonyDickinson 77539Galveston County
Estimated valuepricier than$290,01548% of homes47% of homes37% of homes
Price per ft²pricier than$14453% of homes27% of homes21% of homes
Living areabigger than2,017 ft²51% of homes65% of homes59% of homes
Lot sizebigger than0.13 ac19% of homes12% of homes20% of homes
Year builtnewer than200129% of homes49% of homes57% of homes

About 303 Mammoth Springs Ln

How much is 303 Mammoth Springs Ln, Dickinson, TX worth?

The TopHap Estimate for 303 Mammoth Springs Ln, Dickinson, TX is $290,015 as of Sep 24, 2026. The likely range is $277,990 to $302,040. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 303 Mammoth Springs Ln, Dickinson, TX last sell?

303 Mammoth Springs Ln, Dickinson, TX last sold on Jun 3, 2020 for $223,100, according to the county's recorded deed.

How big is 303 Mammoth Springs Ln, Dickinson, TX?

303 Mammoth Springs Ln, Dickinson, TX has 2 bathrooms, 2,017 square feet of living space and a 0.13-acre lot.

When was 303 Mammoth Springs Ln, Dickinson, TX built?

303 Mammoth Springs Ln, Dickinson, TX was built in 2001, making it 25 years old. It is a conventional home. The building has 1 story.

What schools serve 303 Mammoth Springs Ln, Dickinson, TX?

303 Mammoth Springs Ln, Dickinson, TX is assigned to Calder Road Elementary School (elementary), rated A-; Dickinson Junior High School (middle), rated B; Dickinson High School (high), rated C. All sit in Dickinson Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 303 Mammoth Springs Ln, Dickinson, TX compare to other homes in Dickinson 77539?

Among the 17,383 homes in Dickinson 77539, it is worth more than 47% of them ($290,015 against a typical $295,000), its price per square foot is higher than 27% of them ($144 against a typical $161), it is bigger than 65% of them (2,017 ft² against a typical 1,733 ft²), its lot is bigger than 12% of them (0.13 ac against a typical 0.2 ac) and it is newer than 49% of them (2001 against a typical 2002). Measured against all of Galveston County, it is worth more than 37% 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 303 Mammoth Springs Ln, Dickinson, TX?

The 2025 property tax bill for 303 Mammoth Springs Ln, Dickinson, TX was $6,195. The county assessed it at $317,222.

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