Beta Williamson County, TX only — data and coverage are limited during early access.

6253 MANTALCINO LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath929 sqftBuilt 2019

Property at a Glance

This home is estimated between $184,853 and $378,685, with a best estimate of $276,377. That places the property below the H121413C - SIENA median of $406,354, in a neighborhood that declined 5.4% over the past year.

Estimated Value Range

$184,853 $378,685
Best Estimate
$276,377
WCAD Value
$366,060
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $184,853 and $378,685. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

6293 MANTALCINO LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 897 sqft Built 2018
Raw Value $367,277
Adjusted Value $376,271

Adjusted +$6,765 for 32 sqft more living space and +$2,229 for being newer. Net adjustment: +$8,994.

3 bed 2 bath 910 sqft Built 2022
Raw Value $279,046
Adjusted Value $276,377

Adjusted +$4,017 for 19 sqft more living space and -$6,686 for being older. Net adjustment: -$2,669.

5810 LUCCA LN, ROUND ROCK, TX 78665
0.00 mi 97% similar Same subdivision
3 bed 2 bath 1,528 sqft Built 2018
Raw Value $334,847
Adjusted Value $210,442

Adjusted -$126,634 for 599 sqft less living space and +$2,229 for being newer. Net adjustment: -$124,405.

5715 ARBIA LN, ROUND ROCK, TX 78665
0.00 mi 92% similar Same subdivision
3 bed 2 bath 1,887 sqft Built 2016
Raw Value $380,697
Adjusted Value $184,853

Adjusted -$202,530 for 958 sqft less living space and +$6,686 for being newer. Net adjustment: -$195,844.

3 bed 2 bath 1,288 sqft Built 2020
Raw Value $456,810
Adjusted Value $378,685

Adjusted -$75,896 for 359 sqft less living space and -$2,229 for being older. Net adjustment: -$78,125.

The Neighborhood

This home is valued 9.9% below the H121413C - SIENA median of $406,354. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 5.4% over the past year.

H121413C - SIENA

typical
1,611 Properties
$406,354 Median Value
-5.4% YoY Change
1% Have Pool
100% Have Garage
This Home
$366,060
Median
$406,354

This home is -9.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $8,426 across all districts. With a homestead exemption claimed, that drops to $6,671 — saving $1,755 per year. That's $556 per month a buyer should budget. The assessed value increased +0.6% vs the subdivision average of -5.4%. 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
Hutto ISDSchool1.2052%$4,412
Siena MUD #1MUD0.5250%$1,922
Williamson CountyCounty0.3694%$1,352
Williamson County ESD #3 - HuttoESD0.1000%$366
Williamson County FM/RdCounty0.0443%$162
EWC Higher Ed Centerspecial0.0409%$150
Upper Brushy Creek WCIDWater0.0170%$62
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax2.3018%$8,426
30 / 100

Some opportunity.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $276,377 would pay approximately $1,725 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.

View full property details