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Rural ResidenceResidential
$1,341,775$1,295 / 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 43How 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

3486 OLD MARBLE FALLS RD

ROUND MOUNTAIN, TX 78663
1
Baths
1,036 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.
116.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1910
Year BuiltThe year the home was originally built, according to county records.

Valuation

$1.3M
$574K low$2.1M 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.$925,775
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$740,620
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.29%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$416,000
SSBT MORTGAGE GROUP LLC · recorded Mar 27, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,108 (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.$2,737,712 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,737,712
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,795,920

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.132 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
CountyBLANCO
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2010
Lot (acres)The size of the land the home sits on, from county records.116.20
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.Shed · 160 ft²Porch · 210 ft²

Transaction History(1)

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 · 10.1 mi
H
Lyndon B. Johnson High SchoolB
High · Grades 9–12 · 14.3 mi
M
Lyndon B. Johnson Middle SchoolA-
Middle · Grades 6–8 · 14.4 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%

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

3486 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 85% of homes in Blanco County
  • Costs more per square foot than 96% of homes in Round Mountain 78663
  • Smaller than 87% of homes in Round Mountain 78663
  • Has a bigger lot than 95% of homes in Blanco County
  • Among the oldest homes in Blanco County

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
$372K$2.5M

This home is worth more than 76% 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$1,341,775
CheaperTypical $1,006,474Pricier

Pricier than 76% of homes nearby

Price per ft²$1295
CheaperTypical $424Pricier

Pricier than 96% of homes nearby

Living area1,036 ft²
SmallerTypical 2,128 ft²Bigger

Bigger than 13% of homes nearby

Lot size116.2 ac
SmallerTypical 7.58 acBigger

Bigger than 92% of homes nearby

Year built1910
OlderTypical 2008Newer

Newer than 2% of homes nearby

How 3486 Old Marble Falls Rd ranks against every home in each area.
MeasureThis homeRound Mountain 78663Blanco County
Estimated valuepricier than$1,341,77576% of homes85% of homes
Price per ft²pricier than$129596% of homes96% of homes
Living areabigger than1,036 ft²13% of homes15% of homes
Lot sizebigger than116.2 ac92% of homes95% of homes
Year builtnewer than19102% of homesalmost no homes

About 3486 Old Marble Falls Rd

How much is 3486 Old Marble Falls Rd, Round Mountain, TX worth?

The TopHap Estimate for 3486 Old Marble Falls Rd, Round Mountain, TX is $1,341,775 as of Jul 14, 2026. The likely range is $573,544 to $2,110,006. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3486 Old Marble Falls Rd, Round Mountain, TX last sell?

3486 Old Marble Falls Rd, Round Mountain, TX last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 3486 Old Marble Falls Rd, Round Mountain, TX?

3486 Old Marble Falls Rd, Round Mountain, TX has 1 bathrooms, 1,036 square feet of living space and a 116.20-acre lot.

When was 3486 Old Marble Falls Rd, Round Mountain, TX built?

3486 Old Marble Falls Rd, Round Mountain, TX was built in 1910, making it 116 years old.

What schools serve 3486 Old Marble Falls Rd, Round Mountain, TX?

3486 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 3486 Old Marble Falls Rd, Round Mountain, TX compare to other homes in Round Mountain 78663?

Among the 471 homes in Round Mountain 78663, it is worth more than 76% of them ($1,341,775 against a typical $1,006,474), its price per square foot is higher than 96% of them ($1295 against a typical $424), it is bigger than 13% of them (1,036 ft² against a typical 2,128 ft²), its lot is bigger than 92% of them (116.2 ac against a typical 7.58 ac) and it is newer than 2% of them (1910 against a typical 2008). Measured against all of Blanco County, it is worth more than 85% 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 3486 Old Marble Falls Rd, Round Mountain, TX?

The 2026 property tax bill for 3486 Old Marble Falls Rd, Round Mountain, TX was $6,108. The county assessed it at $2,737,712.

Closest homes

More homes in Round Mountain 78663

Assigned schools

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