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Single Family ResidenceResidential
$450,585$179 / 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 91How 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 $489,440 on Aug 21, 2025

108 BLACK DIAMOND

PORTLAND, TX 78374
0
Baths
2,512 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
2000
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

$451K
$409K low$493K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$489,440 · Aug 21, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,809 (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.$450,653 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$138,916
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$311,737
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$471,707
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$450,653

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.5 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.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
CountySAN PATRICIO
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Brick
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.DeckPatio · 832 ft²Porch · 107 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
East Cliff Elementary SchoolA+
Elementary · Grades PK–5 · 0.9 mi
M
Gregory-Portland Middle SchoolB-
Middle · Grades 6–8 · 1.9 mi
H
Gregory-Portland High SchoolB
High · Grades 9–12 · 2.1 mi

District: Gregory-Portland Independent School District

Neighborhood · ZIP 78374These 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.84
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 100.22

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.84%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.19%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.19,125
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,027 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,664
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$105,237
Average tempThe average temperature here across a full year.72°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.61%

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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

108 Black Diamond 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 more than 93% of homes in San Patricio County
  • Costs more per square foot than 78% of homes in San Patricio County
  • Bigger than 92% of homes in San Patricio County
  • Has a bigger lot than 80% of homes in Portland 78374
  • Newer than 76% of homes in San Patricio County

What homes are worth in Portland 78374

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

This home
$144K$667K

This home is worth more than 91% of homes in Portland 78374.

How it measures up in Portland 78374

The dot is this home. The mark in the middle is the typical home in Portland 78374.

Estimated value$450,585
CheaperTypical $263,835Pricier

Pricier than 91% of homes nearby

Price per ft²$179
CheaperTypical $159Pricier

Pricier than 77% of homes nearby

Living area2,512 ft²
SmallerTypical 1,738 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.23 ac
SmallerTypical 0.18 acBigger

Bigger than 80% of homes nearby

Year built2000
OlderTypical 1980Newer

Newer than 70% of homes nearby

How 108 Black Diamond ranks against every home in each area.
MeasureThis homePortland 78374San Patricio County
Estimated valuepricier than$450,58591% of homes93% of homes
Price per ft²pricier than$17977% of homes78% of homes
Living areabigger than2,512 ft²87% of homes92% of homes
Lot sizebigger than0.23 ac80% of homes55% of homes
Year builtnewer than200070% of homes76% of homes

About 108 Black Diamond

How much is 108 Black Diamond, Portland, TX worth?

The TopHap Estimate for 108 Black Diamond, Portland, TX is $450,585 as of Sep 24, 2026. The likely range is $408,543 to $492,627. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 108 Black Diamond, Portland, TX last sell?

108 Black Diamond, Portland, TX last sold on Aug 21, 2025 for $489,440, according to the county's recorded deed.

How big is 108 Black Diamond, Portland, TX?

108 Black Diamond, Portland, TX has 2,512 square feet of living space and a 0.23-acre lot.

When was 108 Black Diamond, Portland, TX built?

108 Black Diamond, Portland, TX was built in 2000, making it 26 years old. The building has 1 story.

What schools serve 108 Black Diamond, Portland, TX?

108 Black Diamond, Portland, TX is assigned to East Cliff Elementary School (elementary), rated A+; Gregory-Portland Middle School (middle), rated B-; Gregory-Portland High School (high), rated B. All sit in Gregory-Portland Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 108 Black Diamond, Portland, TX compare to other homes in Portland 78374?

Among the 6,462 homes in Portland 78374, it is worth more than 91% of them ($450,585 against a typical $263,835), its price per square foot is higher than 77% of them ($179 against a typical $159), it is bigger than 87% of them (2,512 ft² against a typical 1,738 ft²), its lot is bigger than 80% of them (0.23 ac against a typical 0.18 ac) and it is newer than 70% of them (2000 against a typical 1980). Measured against all of San Patricio County, it is worth more than 93% 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 108 Black Diamond, Portland, TX?

The 2025 property tax bill for 108 Black Diamond, Portland, TX was $8,809. The county assessed it at $450,653.

More homes on Black Diamond

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Assigned schools

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