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1555 HAYNIE BND, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

3 bed2 bath1,864 sqftBuilt 2006

Property at a Glance

This home is estimated between $262,684 and $535,397, with a best estimate of $380,691. That places the property above the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056, in a neighborhood that declined 4.7% over the past year.

Estimated Value Range

$262,684 $535,397
Best Estimate
$380,691
WCAD Value
$324,540
High Confidence

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

Based on 5 comparable properties in R409599G - STONEY BROOK - ALL SECTIONS, this home's estimated market value is between $262,684 and $535,397. All 5 comparables are in the same subdivision, giving this estimate high confidence.

Comparable Properties (5)

1551 HAYNIE BND, ROUND ROCK, TX 78665
0.01 mi 100% similar Same subdivision
3 bed 2 bath 1,260 sqft Built 2009
Raw Value $383,209
Adjusted Value $535,397

Adjusted +$139,854 for 604 sqft more living space and +$12,334 for being newer. Net adjustment: +$152,188.

1547 HAYNIE BND, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,493 sqft Built 2009
Raw Value $282,453
Adjusted Value $380,691

Adjusted +$85,904 for 371 sqft more living space and +$12,334 for being newer. Net adjustment: +$98,238.

3636 SANDY BROOK DR, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 2,006 sqft Built 2006
Raw Value $295,564
Adjusted Value $262,684

Adjusted -$32,880 for 142 sqft less living space. Net adjustment: -$32,880.

1563 HAYNIE BND, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 2 bath 1,887 sqft Built 2007
Raw Value $321,532
Adjusted Value $320,317

Adjusted -$5,326 for 23 sqft less living space and +$4,111 for being newer. Net adjustment: -$1,215.

3644 SANDY BROOK DR, ROUND ROCK, TX 78665
0.02 mi 100% similar Same subdivision
3 bed 1,416 sqft Built 2006
Raw Value $326,193
Adjusted Value $429,926

Adjusted +$103,733 for 448 sqft more living space. Net adjustment: +$103,733.

The Neighborhood

This home is valued 1.1% below the R409599G - STONEY BROOK - ALL SECTIONS median of $328,056. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 4.7% over the past year.

R409599G - STONEY BROOK - ALL SECTIONS

typical
197 Properties
$328,056 Median Value
-4.7% YoY Change
0% Have Pool
100% Have Garage
This Home
$324,540
Median
$328,056

This home is -1.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,839 across all districts. With a homestead exemption claimed, that drops to $4,529 — saving $1,310 per year. That's $377 per month a buyer should budget. The assessed value increased +1.3% vs the subdivision average of -4.7%. This above-average increase gives a protest opportunity score of 30 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$2,898
Round RockCity0.3720%$1,207
Williamson CountyCounty0.3694%$1,199
Austin Community Collegespecial0.1034%$336
Williamson County FM/RdCounty0.0443%$144
Upper Brushy Creek WCIDWater0.0170%$55
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,839
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $380,691 would pay approximately $2,376 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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