4018 MASON CV, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $496,198 and $640,647, with a best estimate of $527,079. That places the property above the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.
Estimated Value Range
$527,079
$493,284
Based on 5 comparable properties(4 in the same subdivision)
Based on 5 comparable properties (4 in the same subdivision, 1 nearby), the estimated range is $496,198 and $640,647. More comparables in the same subdivision would strengthen this estimate.
Comparable Properties (5)
Adjusted +$62,290 for 281 sqft more living space. Net adjustment: +$62,290.
Adjusted -$8,424 for 38 sqft less living space and +$1,826 for being newer. Net adjustment: -$6,598.
Adjusted +$46,773 for 211 sqft more living space and -$1,826 for being older. Net adjustment: +$44,947.
Adjusted -$31,034 for 140 sqft less living space and +$1,826 for being newer. Net adjustment: -$29,208.
Adjusted -$1,773 for 8 sqft less living space and +$20,087 for being newer. Net adjustment: +$18,314.
The Neighborhood
This home is valued 5.7% below the G799514C - MAYFIELD RANCH median of $523,371. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.3% over the past year.
G799514C - MAYFIELD RANCH
typicalThis home is -5.7% below the subdivision median.
Tax Analysis
The estimated annual property tax is $10,193 across all districts. With a homestead exemption claimed, that drops to $8,631 — saving $1,562 per year. That's $719 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
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Georgetown ISD | School | 1.0506% | $5,182 |
| Highlands at Mayfield Ranch MUD | MUD | 0.4850% | $2,392 |
| Williamson County | County | 0.3694% | $1,822 |
| Williamson County ESD #9 - Round Rock | ESD | 0.0999% | $493 |
| Williamson County FM/Rd | County | 0.0443% | $219 |
| Upper Brushy Creek WCID | Water | 0.0170% | $84 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.0663% | $10,193 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $527,079 would pay approximately $3,290 per month (principal and interest only, excluding taxes and insurance).