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3920 CREST LN, ROUND ROCK, TX 78681

ROUND ROCK, 78681 — williamson County

4 bed3 bath1,993 sqftBuilt 2008

Property at a Glance

This home is estimated between $568,194 and $816,256, with a best estimate of $612,425. That places the property below the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673, in a neighborhood that declined 8.0% over the past year.

Estimated Value Range

$568,194 $816,256
Best Estimate
$612,425
WCAD Value
$638,835
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 $568,194 and $816,256. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

4 bed 3 bath 2,173 sqft Built 2005
Raw Value $865,428
Adjusted Value $816,256

Adjusted -$55,164 for 180 sqft less living space and +$5,992 for being newer. Net adjustment: -$49,172.

4 bed 2,136 sqft Built 2005
Raw Value $610,720
Adjusted Value $572,887

Adjusted -$43,825 for 143 sqft less living space and +$5,992 for being newer. Net adjustment: -$37,833.

4007 CREST CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
5 bed 4 bath 2,477 sqft Built 2007
Raw Value $758,759
Adjusted Value $612,425

Adjusted -$148,331 for 484 sqft less living space and +$1,997 for being newer. Net adjustment: -$146,334.

4008 CREST CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 2,353 sqft Built 2006
Raw Value $674,528
Adjusted Value $568,194

Adjusted -$110,329 for 360 sqft less living space and +$3,995 for being newer. Net adjustment: -$106,334.

4012 CREST CV, ROUND ROCK, TX 78681
0.00 mi 100% similar Same subdivision
4 bed 3 bath 1,972 sqft Built 2006
Raw Value $660,826
Adjusted Value $671,257

Adjusted +$6,436 for 21 sqft more living space and +$3,995 for being newer. Net adjustment: +$10,431.

The Neighborhood

This home is valued 2.4% above the L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP median of $623,673. With 427 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 8.0% over the past year.

L495414C - BORHO/MAYFIELD RANCH/SAPPHIRE LOOP

typical
427 Properties
$623,673 Median Value
-8.0% YoY Change
1% Have Pool
100% Have Garage
This Home
$638,835
Median
$623,673

This home is +2.4% above the subdivision median.

Tax Analysis

The estimated annual property tax is $12,732 across all districts. With a homestead exemption claimed, that drops to $11,093 — saving $1,639 per year. That's $924 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
Leander ISDSchool1.0869%$6,943
Round RockCity0.3720%$2,376
Williamson CountyCounty0.3694%$2,360
Austin Community Collegespecial0.1034%$661
Williamson County FM/RdCounty0.0443%$283
Upper Brushy Creek WCIDWater0.0170%$109
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9931%$12,732

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $612,425 would pay approximately $3,823 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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