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Single Family ResidenceResidential
$323,186$160 / 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 94How 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 $198,156 on Oct 27, 2020

18707 PORTHAVEN ROSE LN

TOMBALL, TX 77377
3
Beds
2
Baths
2,026 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.
2020
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$323K
$303K low$343K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$198,156 · Oct 27, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,084 (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.$326,309 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$62,360
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$263,949
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$319,090
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$326,309

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.13 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.''

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
CountyHARRIS
Lot (acres)The size of the land the home sits on, from county records.0.13
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.

M
Grand Lakes Junior High SchoolA
Middle · Grades 7–8 · 0.9 mi
E
Grand Oaks Elementary SchoolB+
Elementary · Grades PK–4 · 1.1 mi
H
Tomball High SchoolB+
High · Grades 9–12 · 5.9 mi

District: Tomball Independent School District

Neighborhood · ZIP 77377These 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.37
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.42,020
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,095 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,135
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$144,540
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.48 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

18707 Porthaven Rose 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.

  • Worth less than 83% of homes in Tomball 77377
  • Smaller than 71% of homes in Tomball 77377
  • Has a smaller lot than 88% of homes in Tomball 77377
  • Newer than 93% of homes in Harris County

What homes are worth in Tomball 77377

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

This home
$223K$1.7M

This home is worth more than 17% of homes in Tomball 77377.

How it measures up in Tomball 77377

The dot is this home. The mark in the middle is the typical home in Tomball 77377.

Estimated value$323,186
CheaperTypical $425,106Pricier

Pricier than 17% of homes nearby

Price per ft²$160
CheaperTypical $163Pricier

Pricier than 45% of homes nearby

Living area2,026 ft²
SmallerTypical 2,525 ft²Bigger

Bigger than 29% of homes nearby

Lot size0.13 ac
SmallerTypical 0.19 acBigger

Bigger than 12% of homes nearby

Year built2020
OlderTypical 2005Newer

Newer than 82% of homes nearby

How 18707 Porthaven Rose Ln ranks against every home in each area.
MeasureThis homeTomball 77377Harris County
Estimated valuepricier than$323,18617% of homes60% of homes
Price per ft²pricier than$16045% of homes58% of homes
Living areabigger than2,026 ft²29% of homes55% of homes
Lot sizebigger than0.13 ac12% of homes25% of homes
Year builtnewer than202082% of homes93% of homes

About 18707 Porthaven Rose Ln

How much is 18707 Porthaven Rose Ln, Tomball, TX worth?

The TopHap Estimate for 18707 Porthaven Rose Ln, Tomball, TX is $323,186 as of Jul 14, 2026. The likely range is $303,120 to $343,252. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18707 Porthaven Rose Ln, Tomball, TX last sell?

18707 Porthaven Rose Ln, Tomball, TX last sold on Oct 27, 2020 for $198,156, according to the county's recorded deed.

How big is 18707 Porthaven Rose Ln, Tomball, TX?

18707 Porthaven Rose Ln, Tomball, TX has 3 bedrooms, 2 bathrooms, 2,026 square feet of living space and a 0.13-acre lot.

When was 18707 Porthaven Rose Ln, Tomball, TX built?

18707 Porthaven Rose Ln, Tomball, TX was built in 2020, making it 6 years old. The building has 1 story.

What schools serve 18707 Porthaven Rose Ln, Tomball, TX?

18707 Porthaven Rose Ln, Tomball, TX is assigned to Grand Lakes Junior High School (middle), rated A; Grand Oaks Elementary School (elementary), rated B+; Tomball High School (high), rated B+. All sit in Tomball Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18707 Porthaven Rose Ln, Tomball, TX compare to other homes in Tomball 77377?

Among the 16,186 homes in Tomball 77377, it is worth more than 17% of them ($323,186 against a typical $425,106), its price per square foot is higher than 45% of them ($160 against a typical $163), it is bigger than 29% of them (2,026 ft² against a typical 2,525 ft²), its lot is bigger than 12% of them (0.13 ac against a typical 0.19 ac) and it is newer than 82% of them (2020 against a typical 2005). Measured against all of Harris County, it is worth more than 60% 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 18707 Porthaven Rose Ln, Tomball, TX?

The 2025 property tax bill for 18707 Porthaven Rose Ln, Tomball, TX was $8,084. The county assessed it at $326,309.

More homes on Porthaven Rose Ln

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Assigned schools

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