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

305 FAIRLANE DR, ROUND ROCK, TX 78664

ROUND ROCK, 78664 — williamson County

2 bed1 bath1,050 sqftBuilt 1979

Property at a Glance

This home is estimated between $145,523 and $202,893, with a best estimate of $157,920. That places the property below the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935, in a neighborhood that appreciated 0.3% over the past year.

Estimated Value Range

$145,523 $202,893
Best Estimate
$157,920
WCAD Value
$293,649
Low Confidence

Based on 5 comparable properties(1 in the same subdivision)

There are 5 comparable properties within range, but few are in R605477I - South Park, Southern Terrace, Cushing PA. The estimated range of $145,523 and $202,893 should be treated as a rough guide.

Comparable Properties (5)

2 bed 1 bath 934 sqft Built 1982
Raw Value $257,570
Adjusted Value $202,893

Adjusted +$23,788 for 116 sqft more living space and -$7,729 for being older and -$70,736 for no garage. Net adjustment: -$54,677.

2 bed 2 bath 1,040 sqft Built 1979
Raw Value $214,208
Adjusted Value $145,523

Adjusted +$2,051 for 10 sqft more living space and -$70,736 for no garage. Net adjustment: -$68,685.

1905 MONTCLAIR DR, ROUND ROCK, TX 78664
0.00 mi 95% similar Same subdivision
3 bed 1 bath 1,667 sqft Built 1975
Raw Value $341,610
Adjusted Value $154,654

Adjusted -$126,525 for 617 sqft less living space and +$10,305 for being newer and -$70,736 for no garage. Net adjustment: -$186,956.

3 bed 2 bath 1,098 sqft Built 1979
Raw Value $251,872
Adjusted Value $171,293

Adjusted -$9,843 for 48 sqft less living space and -$70,736 for no garage. Net adjustment: -$80,579.

3 bed 2 bath 1,138 sqft Built 1982
Raw Value $254,431
Adjusted Value $157,920

Adjusted -$18,046 for 88 sqft less living space and -$7,729 for being older and -$70,736 for no garage. Net adjustment: -$96,511.

The Neighborhood

This home is valued 5.9% below the R605477I - South Park, Southern Terrace, Cushing PA median of $311,935. That positions it competitively for buyers comparing within the neighborhood. The neighborhood appreciated 0.3% over the past year.

R605477I - South Park, Southern Terrace, Cushing PA

typical
125 Properties
$311,935 Median Value
+0.3% YoY Change
2% Have Pool
61% Have Garage
This Home
$293,649
Median
$311,935

This home is -5.9% below the subdivision median.

Tax Analysis

The estimated annual property tax is $5,284 across all districts. With a homestead exemption claimed, that drops to $3,979 — saving $1,305 per year. That's $332 per month a buyer should budget. The assessed value increased +9.5% vs the subdivision average of +0.3%. This above-average increase gives a protest opportunity score of 61 out of 100 — it may be worth challenging the appraisal.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$2,623
Round RockCity0.3720%$1,092
Williamson CountyCounty0.3694%$1,085
Austin Community Collegespecial0.1034%$304
Williamson County FM/RdCounty0.0443%$130
Upper Brushy Creek WCIDWater0.0170%$50
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$5,284
61 / 100

Moderate opportunity to protest.

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $157,920 would pay approximately $986 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