8504 WILLIAMSON RD TX 78610
| Owner | TELLEZ SARA I & |
|---|---|
| Parcel ID | 0380110219 |
| Short ID | 363973 |
| Type | Mobile Home |
| Use Code | 12 Mobile Home — Double (PP) |
| Valuation | Cost |
| Improvement SF | 1,300 SF |
| Land SF | 437,778 SF |
| Acres | 10.050 |
| Year Built | 2008 |
| Legal | PERSONAL PROPERTY M/H SERIAL# CW2011810TXA/B LABEL# HWC0390842/843 |
| Neighborhood | — |
| Land | $575,765 |
|---|---|
| Special Use Land Market | Not Available |
| Total Land | $575,765 |
| Improvement | $187,016 |
|---|---|
| Total Improvement | $187,016 |
| Market | $846,007 |
|---|---|
| Special Use Exclusion (−) | Not Available |
| Appraised | $846,007 |
| Value Limitation Adjustment (−) (homestead cap) | −$403,180 |
| Net Appraised (assessed) | $442,827 |
| Taxable Value | $442,827 |
|---|
Appreciation: Market value has risen +1454.6% from $54,419 (2021) to $846,007 (2025), a CAGR of 98.6% over 4 years. This is strong appreciation — well above typical inflation. Most of this growth came in a single year (2024→2025), not a steady climb — worth checking what drove that reappraisal rather than assuming a smooth trend. Over the same span, the median Residential parcel countywide rose +45.8%, so this parcel has outpaced the broader residential market over the same period.
Tax Burden: The combined rate across 7 taxing entities is 2.0169% in 2025 (+0.0275% vs 2024 — rates increased ). At the current taxable value, estimated annual taxes are $8,932. Del Valle ISD is the largest single contributor, at 47.0% of the total 2025 levy.
Assessment Gap: Assessed value ($442,827) is $403,180 below market value, suggesting potential for an upward assessment in future years.
Asset Class: Single-family residential. Buyer should verify which exemptions carry and which reset at sale. This is valued using the cost approach, tied more to replacement cost and physical condition than to income performance.
Value Composition: Land carries 68% of market value ($575,765 land vs $187,016 improvements), about $1/SF of land. Land and improvements both carry meaningful weight; value is balanced between the structure and its site.
Submarket Position: At $846,007, this parcel sits in the top quartile (≥75th percentile) of Residential property in Travis County — county median $479,535 (P25 $358,633 / P75 $737,055, n=318,609). Residential here is the broad TCAD category — every residential property countywide, any size or use — not a use-code-specific peer group. See the Peer Set and the Where This Property Stands benchmark below, which narrows to this property's actual use code, for parcel-level comparables.
Forward Outlook: Holding the +98.6% Base-scenario CAGR (Based on 2021–2025 certified trend, projected forward from 2025), the model projects market value near $26,115,792 by 2030, with an estimated annual tax burden around $11,289. Estimated Forward figures are model projections, not certified — see the 6-Year Projection section for the low/base/high bands.
No delinquent taxes on record.
1 components · show ▾hide ▴
| Code | Description | SF | In Gross |
|---|---|---|---|
| 1ST | 1st Floor | 1,300 SF | ✓ |
| Unit (prop_id) | Owner | Address | Market Value | Assessed Value | Taxable Value |
|---|---|---|---|---|---|
| 363973 | VASQUEZ ROBERT & | 0.000 | $638,145 | $322,277 | $322,277 |
| 805257 | TELLEZ SARA I & | 8504 WILLIAMSON RD 78610 | $79,443 | $79,443 | $79,443 |
Market value changed by 84% in 2022, flagged as unusually large. Verify against comparable sales before using this value in underwriting.
| Entity | 2021 Rate | 2022 Rate | 2023 Rate | 2024 Rate | 2025 Rate | YoY (2024→25) | Amt Due | Amt Paid | Balance |
|---|---|---|---|---|---|---|---|---|---|
| IDV Del Valle ISD | 1.2020% | 1.1846% | 1.0028% | 0.9969% | 0.9489% | -0.0480% | $4,201.98 | $4,201.98 | Paid |
| TCO Travis County | 0.3574% | 0.3182% | 0.3047% | 0.3444% | 0.3758% | +0.0314% | $1,664.34 | $1,664.34 | Paid |
| CMR City of Mustang Ridge | 0.3882% | 0.3112% | 0.2652% | 0.2388% | 0.2708% | +0.0320% | $1,199.07 | $1,199.07 | Paid |
| THD Travis Central Health | 0.1118% | 0.0987% | 0.1007% | 0.1080% | 0.1180% | +0.0101% | $522.64 | $522.64 | Paid |
| ACT Austin Community College | 0.1048% | 0.0987% | 0.0986% | 0.1013% | 0.1034% | +0.0021% | $457.89 | $457.89 | Paid |
| E15 Travis County ESD # 15 | 0.1000% | 0.0949% | 0.1000% | 0.1000% | 0.1000% | +0.0000% | $442.83 | $442.83 | Paid |
| E11 Travis County ESD # 11 | 0.1000% | 0.0949% | 0.1000% | 0.1000% | 0.1000% | +0.0000% | $442.83 | $442.83 | Paid |
| Combined Rate | 2.3642% | 2.2012% | 1.9719% | 1.9894% | 2.0169% | +0.0275% | $8,931.58 | $8,931.58 | Paid |
| 2026 Certified Certified | 2025 Certified Certified | Change 2025→2026 | |
|---|---|---|---|
| Market Value | $717,588 | $846,007 | -15.2% |
| Assessed Value | $401,720 | $442,827 | -9.3% |
| Land Value | $451,346 | $575,765 | -21.6% |
| Improvement Value | $186,799 | $187,016 | -0.1% |
| Taxable Value | $401,720 | $442,827 | -9.3% |
| HS Cap Loss | -$315,868 | — | |
| Total Tax 2026 = estimate |
~$8,102
Estimated
|
~$8,932
Partial
|
ⓘ |
| 2026 Preliminary Preliminary | 2026 Certified Certified | Change | |
|---|---|---|---|
| Market Value | $717,588 | $717,588 | +0 (+0.0%) |
| Taxable Value | $401,720 | $401,720 | +0 (+0.0%) |
| Year | Market Value | Land Value | Imprv Value | Value Limitation Adj (−) | Net Appraised (Assessed) | Taxable Value | Total Tax | Source |
|---|---|---|---|---|---|---|---|---|
| 2026 | $717,588 | $451,346 | $186,799 | −$315,868 | $401,720 | $401,720 | Not yet — post-cert | Certified — no billing yet |
| 2025 | $846,007 | $575,765 | $187,016 | −$403,180 | $442,827 | $442,827 | ~$8,932 | Partial |
| 2024 | $82,609 | — | — | — | — | $— | $6,787 | Verified |
| 2023 | $86,099 | — | — | — | — | $— | $6,852 | Verified |
| 2022 | $54,419 | — | — | — | — | $— | $5,440 | Verified |
| 2021 | $54,419 | — | — | — | — | $— | $4,250 | Verified |
| Year | MktVal YoY | Assessed YoY | Asmt Ratio | Eff. Tax Rate | Coverage |
|---|---|---|---|---|---|
| 2026 | -4.5% | -4.5% | ~100% | Not available | Partial |
| 2025 | -2.9% | -2.9% | ~100% | Not available | Partial |
| 2024 | +3.8% | +3.8% | ~100% | 0.8200% | Verified |
| 2023 | -4.1% | -4.1% | ~100% | 0.9400% | Verified |
| 2022 | -84.2% ! | -52.1% | ~100% | 0.7600% | Verified |
| 2021 | base year | — | 33.0% | 7.8100% | Verified |
| Cumulative market value growth (earliest valid year → 2025): -84.7% | |||||
| 12 Month | Hist. Avg | Forecast Avg | Peak | When | Trough | When | |
|---|---|---|---|---|---|---|---|
| Market Value Growth | -15.2% | +192.6% | +105.7% | +924.1% | 2025 | -15.2% | 2026 |
| Assessment Ratio | 56.0% | 54.1% | — | 56.0% | 2026 | 52.3% | 2025 |
| Effective Tax Rate (2025) | 2.0200% | 2.0200% | — | 2.0200% | 2025 | 2.0200% | 2025 |
|
Tax Amount
⚑ 2025 total is a derived or partial figure, not independently confirmed |
$8,932 | $6,452 | ~$10,349 | $8,932 | 2025 | $4,250 | 2021 |
| Year | ~Mkt Value | ~Assessed | ~Rate | ~Ann. Tax | Value Δ |
|---|---|---|---|---|---|
| 2026 | ~$1,679,886 | ~$487,110 | ~1.9301% | ~$9,402 | +98.6% |
| 2027 | ~$3,335,690 | ~$535,821 | ~1.8433% | ~$9,877 | +294.3% |
| 2028 | ~$6,623,560 | ~$589,403 | ~1.7565% | ~$10,353 | +682.9% |
| 2029 | ~$13,152,168 | ~$648,343 | ~1.6697% | ~$10,825 | +1454.6% |
| 2030 | ~$26,115,792 | ~$713,177 | ~1.5829% | ~$11,289 | +2986.9% |
| 2026 | ~$1,662,966 | ~$487,110 | ~2.0169% | ~$9,825 | +96.6% |
| 2027 | ~$3,268,833 | ~$535,821 | ~2.0169% | ~$10,807 | +286.4% |
| 2028 | ~$6,425,428 | ~$589,403 | ~2.0169% | ~$11,888 | +659.5% |
| 2029 | ~$12,630,235 | ~$648,343 | ~2.0169% | ~$13,077 | +1392.9% |
| 2030 | ~$24,826,804 | ~$713,177 | ~2.0169% | ~$14,384 | +2834.6% |
| 2026 | ~$1,696,806 | ~$487,110 | ~1.8867% | ~$9,190 | +100.6% |
| 2027 | ~$3,403,224 | ~$535,821 | ~1.7565% | ~$9,412 | +302.3% |
| 2028 | ~$6,825,724 | ~$589,403 | ~1.6263% | ~$9,585 | +706.8% |
| 2029 | ~$13,690,113 | ~$648,343 | ~1.4961% | ~$9,700 | +1518.2% |
| 2030 | ~$27,457,772 | ~$713,177 | ~1.3659% | ~$9,741 | +3145.6% |
In 2025, this property's market value of $846,007 places it in the top 25% for Residential properties in Travis County (318609 comparable) — +76% above the county median of $479,535. Residential here is the broad TCAD category — every residential property countywide, any size or use — not a use-code-specific peer group. Use the Use Code filter above to narrow to this property's actual type.
| Year | This Property | Bottom 25% | Median | Top 25% | Position | Group YoY |
|---|---|---|---|---|---|---|
| 2025 | $846,007 | $358,633 | $479,535 | $737,055 | ↑ Top 25% | -6.4% |
| 2024 | $82,609 | $384,868 | $512,735 | $786,167 | ↓ Bottom 25% | -8.7% |
| 2023 | $86,099 | $424,496 | $565,716 | $845,447 | ↓ Bottom 25% | -2.1% |
| 2022 | $54,419 | $435,080 | $581,770 | $864,060 | ↓ Bottom 25% | +53.2% |
| 2021 | $54,419 | $239,232 | $328,865 | $488,922 | ↓ Bottom 25% | base yr |
Estimate only. The appraisal district sets value as of Jan 1 (not at sale price). A sale is strong evidence of market value and is typically reflected in the next Jan 1 valuation. Taxing units set rates annually. Modeled from government data — not a legal or tax opinion.