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1288 JOHNSON LN, ROUND ROCK, TX 78665

ROUND ROCK, 78665 — williamson County

4 bed2 bath2,269 sqftBuilt 2000

Property at a Glance

This home is estimated between $371,756 and $1,300,949, with a best estimate of $1,026,244. That places the property above the R002D78G - East Round Rock Williamson Co Abstracts lt 20 Acs median of $594,322, in a neighborhood that declined 11.1% over the past year.

Estimated Value Range

$371,756 $1,300,949
Best Estimate
$1,026,244
WCAD Value
$844,785
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 $371,756 and $1,300,949. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

1294 JOHNSON LN, ROUND ROCK, TX 78665
0.00 mi 100% similar Same subdivision
3 bed 2 bath 2,142 sqft Built 1982
Raw Value $1,090,019
Adjusted Value $1,300,949

Adjusted +$41,762 for 127 sqft more living space and +$69,115 for being newer and +$100,053 for having a garage. Net adjustment: +$210,930.

1290 JOHNSON LN, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 2,068 sqft Built 1978
Raw Value $775,621
Adjusted Value $1,026,244

Adjusted +$66,096 for 201 sqft more living space and +$84,474 for being newer and +$100,053 for having a garage. Net adjustment: +$250,623.

1296 JOHNSON LN, ROUND ROCK, TX 78665
0.00 mi 99% similar Same subdivision
3 bed 2 bath 2,007 sqft Built 1980
Raw Value $945,188
Adjusted Value $1,108,137

Adjusted +$86,155 for 262 sqft more living space and +$76,794 for being newer. Net adjustment: +$162,949.

3 bed 2 bath 2,254 sqft Built 2006
Raw Value $389,861
Adjusted Value $371,756

Adjusted +$4,933 for 15 sqft more living space and -$23,038 for being older. Net adjustment: -$18,105.

4 bed 2 bath 1,947 sqft Built 2005
Raw Value $496,454
Adjusted Value $583,140

Adjusted +$105,885 for 322 sqft more living space and -$19,199 for being older. Net adjustment: +$86,686.

The Neighborhood

This home is valued 42.1% above the R002D78G - East Round Rock Williamson Co Abstracts lt 20 Acs median of $594,322. With 82 homes in the subdivision, the property sits in the upper tier. Note that values in this subdivision declined 11.1% over the past year.

R002D78G - East Round Rock Williamson Co Abstracts lt 20 Acs

above average
82 Properties
$594,322 Median Value
-11.1% YoY Change
1% Have Pool
43% Have Garage
This Home
$844,785
Median
$594,322

This home is +42.1% above the subdivision median.

Tax Analysis

The estimated annual property tax is $13,208 across all districts. With a homestead exemption claimed, that drops to $11,822 — saving $1,386 per year. That's $985 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%$6,556
Round RockCity0.3720%$2,731
Williamson CountyCounty0.3694%$2,712
Austin Community Collegespecial0.1034%$759
Williamson County FM/RdCounty0.0443%$325
Upper Brushy Creek WCIDWater0.0170%$125
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.7993%$13,208

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $1,026,244 would pay approximately $6,406 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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