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900 MANDELL ST, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath1,112 sqftBuilt 1940

Property at a Glance

This home is estimated between $-13,592 and $445,783, with a best estimate of $64,775. That places the property below the R701575F - OLD TOWN ROUND ROCK median of $319,256, in a neighborhood that appreciated 4.3% over the past year.

Estimated Value Range

$-13,592 $445,783
Best Estimate
$64,775
WCAD Value
$218,228
Low Confidence

Based on 5 comparable properties(2 in the same subdivision)

There are 5 comparable properties within range, but few are in R701575F - OLD TOWN ROUND ROCK. The estimated range of $-13,592 and $445,783 should be treated as a rough guide.

Comparable Properties (5)

2 bed 1 bath 944 sqft Built 1955
Raw Value $449,032
Adjusted Value $445,783

Adjusted +$43,136 for 168 sqft more living space and -$46,385 for being older. Net adjustment: -$3,249.

902 MANDELL ST S, ROUND ROCK, TX 78664
0.00 mi 72% similar Same subdivision
3 bed 2 bath 1,583 sqft Built 1980
Raw Value $433,823
Adjusted Value $64,775

Adjusted -$120,934 for 471 sqft less living space and -$123,694 for being older and -$124,420 for no garage. Net adjustment: -$369,048.

712 MANDELL ST, ROUND ROCK, TX 78664
0.00 mi 69% similar Same subdivision
3 bed 2 bath 1,047 sqft Built 2018
Raw Value $587,339
Adjusted Value $238,406

Adjusted +$16,689 for 65 sqft more living space and -$241,202 for being older and -$124,420 for no garage. Net adjustment: -$348,933.

2 bed 1 bath 826 sqft Built 1984
Raw Value $229,600
Adjusted Value $42,551

Adjusted +$73,434 for 286 sqft more living space and -$136,063 for being older and -$124,420 for no garage. Net adjustment: -$187,049.

3 bed 2 bath 1,158 sqft Built 1984
Raw Value $258,702
Adjusted Value $-13,592

Adjusted -$11,811 for 46 sqft less living space and -$136,063 for being older and -$124,420 for no garage. Net adjustment: -$272,294.

The Neighborhood

This home is valued 31.6% below the R701575F - OLD TOWN ROUND ROCK median of $319,256. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 4.3% over the past year.

R701575F - OLD TOWN ROUND ROCK

below average
360 Properties
$319,256 Median Value
+4.3% YoY Change
5% Have Pool
24% Have Garage
This Home
$218,228
Median
$319,256

This home is -31.6% below the subdivision median.

Tax Analysis

The estimated annual property tax is $3,243 across all districts. With a homestead exemption claimed, that drops to $1,959 — saving $1,284 per year. That's $163 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$1,610
Round RockCity0.3720%$670
Williamson CountyCounty0.3694%$666
Austin Community Collegespecial0.1034%$186
Williamson County FM/RdCounty0.0443%$80
Upper Brushy Creek WCIDWater0.0170%$31
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$3,243

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $64,775 would pay approximately $404 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

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