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Rural ResidenceResidential
$819,076$641 / 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 49How 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 $374,100 on Oct 26, 2021

634 OLD MARBLE FALLS RD

ROUND MOUNTAIN, TX 78663
1
Baths
1,278 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.
3 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.

Valuation

$819K
$405K low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$374,100 · Oct 26, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,034 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$224,350 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$90,420
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$133,930
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$224,350
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$224,350

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyBLANCO
Lot (acres)The size of the land the home sits on, from county records.3.00
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 112 ft²Patio · 112 ft²Porch · 150 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
Lyndon B. Johnson Elementary School
Elementary · Grades PK–5 · 7.4 mi
H
Lyndon B. Johnson High SchoolB
High · Grades 9–12 · 11.6 mi
M
Lyndon B. Johnson Middle SchoolA-
Middle · Grades 6–8 · 11.7 mi

District: Johnson City Independent School District

Neighborhood · ZIP 78663These 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.58
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.17

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.78%
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.2.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.1,238
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.10 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,216
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$136,274
Average tempThe average temperature here across a full year.66°F
Annual precipHow much rain and melted snow falls here in a typical year.33 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

634 Old Marble Falls Rd 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 65% of homes in Blanco County
  • Costs more per square foot than 84% of homes in Round Mountain 78663
  • Smaller than 81% of homes in Round Mountain 78663
  • Has a smaller lot than 85% of homes in Round Mountain 78663
  • Older than 85% of homes in Round Mountain 78663

What homes are worth in Round Mountain 78663

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

This home
$389K$2.6M

This home is worth more than 41% of homes in Round Mountain 78663.

How it measures up in Round Mountain 78663

The dot is this home. The mark in the middle is the typical home in Round Mountain 78663.

Estimated value$819,076
CheaperTypical $899,650Pricier

Pricier than 41% of homes nearby

Price per ft²$641
CheaperTypical $403Pricier

Pricier than 84% of homes nearby

Living area1,278 ft²
SmallerTypical 2,128 ft²Bigger

Bigger than 19% of homes nearby

Lot size3 ac
SmallerTypical 7.51 acBigger

Bigger than 15% of homes nearby

Year built1990
OlderTypical 2008Newer

Newer than 15% of homes nearby

How 634 Old Marble Falls Rd ranks against every home in each area.
MeasureThis homeRound Mountain 78663Blanco County
Estimated valuepricier than$819,07641% of homes65% of homes
Price per ft²pricier than$64184% of homes84% of homes
Living areabigger than1,278 ft²19% of homes25% of homes
Lot sizebigger than3 ac15% of homes43% of homes
Year builtnewer than199015% of homes23% of homes

About 634 Old Marble Falls Rd

How much is 634 Old Marble Falls Rd, Round Mountain, TX worth?

The TopHap Estimate for 634 Old Marble Falls Rd, Round Mountain, TX is $819,076 as of Sep 24, 2026. The likely range is $404,530 to $1,233,622. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 634 Old Marble Falls Rd, Round Mountain, TX last sell?

634 Old Marble Falls Rd, Round Mountain, TX last sold on Oct 26, 2021 for $374,100, according to the county's recorded deed.

How big is 634 Old Marble Falls Rd, Round Mountain, TX?

634 Old Marble Falls Rd, Round Mountain, TX has 1 bathrooms, 1,278 square feet of living space and a 3.00-acre lot.

When was 634 Old Marble Falls Rd, Round Mountain, TX built?

634 Old Marble Falls Rd, Round Mountain, TX was built in 1990, making it 36 years old.

What schools serve 634 Old Marble Falls Rd, Round Mountain, TX?

634 Old Marble Falls Rd, Round Mountain, TX is assigned to Lyndon B. Johnson Elementary School (elementary); Lyndon B. Johnson High School (high), rated B; Lyndon B. Johnson Middle School (middle), rated A-. All sit in Johnson City Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 634 Old Marble Falls Rd, Round Mountain, TX compare to other homes in Round Mountain 78663?

Among the 469 homes in Round Mountain 78663, it is worth more than 41% of them ($819,076 against a typical $899,650), its price per square foot is higher than 84% of them ($641 against a typical $403), it is bigger than 19% of them (1,278 ft² against a typical 2,128 ft²), its lot is bigger than 15% of them (3 ac against a typical 7.51 ac) and it is newer than 15% of them (1990 against a typical 2008). Measured against all of Blanco County, it is worth more than 65% 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 634 Old Marble Falls Rd, Round Mountain, TX?

The 2026 property tax bill for 634 Old Marble Falls Rd, Round Mountain, TX was $3,034. The county assessed it at $224,350.

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