Williamson County · Round Rock
ZIP 78681 property tax overassessment report
14.6% of homes in Round Rock ZIP 78681 (2,549 of 17,495 parcels) are assessed more than 10% above what comparable-size homes in the same ZIP typically pay per square foot. Combined annual overpayment: $3,548,973.
Williamson County · over-assessed homes overpay year-round
Next: WCAD 2027 values mail late March-April. Protest deadline: May 15, 2027.
Top 25 most overassessed homes in 78681
Addresses anonymized. Pulled directly from HCAD public records. Each home pays significantly more than what a comparable-size home in this ZIP typically pays.
| Address | Sq ft | Year | Market val | Expected | Overage | % over | $/yr |
|---|---|---|---|---|---|---|---|
| 4XXX SPANISH OAK DR | 6,995 | 2022 | $3,023,320 | $1,510,920 | $1,512,400 | 100.1% | $30,097 |
| 4XXX OAK RIDGE DR | 4,291 | 2020 | $2,280,617 | $926,856 | $1,353,761 | 146.1% | $26,940 |
| 2XXX CAMINO DEL VERDES PL | 6,798 | 2006 | $2,714,071 | $1,468,368 | $1,245,703 | 84.8% | $24,789 |
| 5XXX OAK RIDGE DR | 4,213 | 2019 | $2,148,420 | $910,008 | $1,238,412 | 136.1% | $24,644 |
| 4XXX OAK RIDGE DR | 4,380 | 2019 | $2,152,879 | $946,080 | $1,206,799 | 127.6% | $24,015 |
| 4XXX OAK RIDGE DR | 4,252 | 2019 | $2,082,221 | $918,432 | $1,163,789 | 126.7% | $23,159 |
| 2XXX CASA LINDA CV | 5,704 | 2006 | $2,364,210 | $1,232,064 | $1,132,146 | 91.9% | $22,530 |
| 2XXX MAYFIELD DR | 7,044 | 2015 | $2,648,026 | $1,521,504 | $1,126,522 | 74% | $22,418 |
| 2XXX SAM BASS RD | 5,478 | 2015 | $2,267,884 | $1,183,248 | $1,084,636 | 91.7% | $21,584 |
| 2XXX CASA LINDA CV | 5,245 | 2005 | $2,193,945 | $1,132,920 | $1,061,025 | 93.7% | $21,114 |
| 2XXX CAMINO DEL VERDES PL | 8,037 | 2002 | $2,786,995 | $1,735,992 | $1,051,003 | 60.5% | $20,915 |
| 2XXX CASA LINDA CV | 6,519 | 2012 | $2,456,933 | $1,408,104 | $1,048,829 | 74.5% | $20,872 |
| 4XXX OAK RIDGE DR | 4,062 | 2020 | $1,910,353 | $877,392 | $1,032,961 | 117.7% | $20,556 |
| 2XXX WALSH DR | 5,557 | 2016 | $2,203,940 | $1,200,312 | $1,003,628 | 83.6% | $19,972 |
| 4XXX SAM BASS RD | 4,269 | 2006 | $1,921,369 | $922,104 | $999,265 | 108.4% | $19,885 |
| 1XXX GREAT OAKS DR | 3,656 | 1976 | $1,768,792 | $789,696 | $979,096 | 124% | $19,484 |
| 3XXX OAK MEADOW DR | 5,842 | 1979 | $2,210,004 | $1,261,872 | $948,132 | 75.1% | $18,868 |
| 3XXX OAK RIDGE DR | 1,813 | 1999 | $1,329,608 | $391,608 | $938,000 | 239.5% | $18,666 |
| 1XXX HIDDEN RIDGE CT | 5,067 | 2014 | $2,018,879 | $1,094,472 | $924,407 | 84.5% | $18,396 |
| 1XXX OAK FOREST DR | 4,192 | 2012 | $1,828,003 | $905,472 | $922,531 | 101.9% | $18,358 |
| 2XXX COURT DEL REY | 4,998 | 2001 | $1,970,716 | $1,079,568 | $891,148 | 82.5% | $17,734 |
| 1XXX HIDDEN RIDGE CT | 4,325 | 2015 | $1,818,075 | $934,200 | $883,875 | 94.6% | $17,589 |
| 4XXX KNOLLWOOD CIR | 2,929 | 1984 | $1,502,998 | $632,664 | $870,334 | 137.6% | $17,320 |
| 3XXX SAM BASS RD | 4,725 | 1984 | $1,872,653 | $1,020,600 | $852,053 | 83.5% | $16,956 |
| 2XXX SAM BASS RD | 2,172 | 1992 | $1,320,756 | $469,152 | $851,604 | 181.5% | $16,947 |
Is yours one of them?
Past the regular May 15 date, late protests may still be accepted for good cause until the ARB approves the records (typically mid-July), and Williamson County publishes fresh 2027 values next April. Check your address free now, see if you can still file this year, and when new values drop your $49 iFile-ready protest kit is 30 seconds away.
Check your address free →Free check, no signup · $49 flat protest kit, one time, you keep 100%