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11800 ALTERRA PARKWAY TX 78758

Travis County, TX · Land / Vacant Appraisal: 2025 Certified Billing: 2025 Partial 2021–24 billing ✓
2025 Certified
Market Value
$135,739,330
2025 Verified
Taxable Value
$135,739,330
2025 Verified
Total Tax
~$2,670,663
2025 Partial
Effective Tax Rate (2025)
1.9700%
2025 Tax ÷ 2025 Market Value Partial
2026 Preliminary
Market Value
$146,079,496
+7.6% 2025 → 2026 Preliminary
Taxable Value
$146,079,496
2026 Preliminary
Est. 2026 Total Tax
~$2,989,495
2026 Estimated
Est. 2026 Effective Tax Rate
2.0465%
Est. 2026 Tax ÷ 2026 Market Value Estimated
Overview History Projection Position
2026 Property Tax Calendar Today: July 19, 2026
Valuation Date
Jan 1
Notices Mailed
Apr 15
Protest DeadlineYou are here
May 15
6 days to next
Roll Certified
Jul 25
This parcel's 2026 values are still Preliminary as of today.
Rates Adopted
Sep 1
Bills Mailed
Oct 1
Payment Due
Jan 31
Statutory Travis County annual property-tax calendar — Tax Code §23.01 (valuation), §41.44 (protest deadline); see TCAD's Property Tax System ↗ and the Travis County Tax Office's Truth in Taxation Summary ↗ for full citations (also on the Info page). "Notices Mailed" and "Protest Deadline" show the general statutory window — this parcel's own notice-mailed date isn't in Parcelytics' dataset, so it isn't shown as if it were.
Property Info
Owner TR DOMAIN 12 LLC
Parcel ID 0258080601
Short ID 904604
Type Real
Use Code 50 Office Hi-Rise (≥6 Stories)
Valuation Income
Improvement SF 86,269 SF
Land SF 142,441 SF
Acres 3.270
Year Built 2020
Legal LOT D12 DOMAIN LOT D12 SUBD
Neighborhood 50NWE
View this property on TCAD ↗
Current Values 2025 Certified
Land$12,107,502
Special Use Land MarketNot Available
Total Land $12,107,502
Improvement$123,631,828
Total Improvement $123,631,828
Market$135,739,330
Special Use Exclusion (−)Not Available
Appraised$135,739,330
Value Limitation Adjustment (−)—
Net Appraised (assessed) $135,739,330
Taxable Value $135,739,330
Build-up from 2025 TCAD certified values. Land and Improvement are shown as single totals — Parcelytics' loaders capture one aggregate value per year, not TCAD's Homesite / Non-Homesite split. Special Use Land Market and Special Use Exclusion (agricultural/productivity valuation) are not in the current dataset.
Satellite View Imagery: Esri
Satellite image not available
We couldn't locate this property on the map — this can happen for parcels whose address our geocoder can't confidently match.
Investor Insight Report

Appreciation: Market value has fallen -23.4% from $177,205,800 (2021) to $135,739,330 (2025), a CAGR of -6.4% over 4 years. Growth has been relatively flat for this asset class. Most of this growth came in a single year (2022→2023), not a steady climb — worth checking what drove that reappraisal rather than assuming a smooth trend. Over the same span, the median Land/Vacant parcel countywide rose +283.7%, so this parcel has lagged the broader land/vacant market over the same period.

Tax Burden: The combined rate across 5 taxing entities is 2.0465% in 2025 (+0.0647% vs 2024 — rates increased ). At the current taxable value, estimated annual taxes are $2,777,885. Austin ISD is the largest single contributor, at 45.2% of the total 2025 levy.

Asset Class: Land / Vacant. This is valued using the income approach, so changes in rent roll or occupancy move the appraisal more directly than they would for a cost-approach property.

Investment Snapshot — 2025 certified basis
Building (Main)
86,269 SF
living area
Gross Building
868,104 SF
enclosed area
Land
142,441 SF
3.270 ac
Value / Bldg SF
$1,573
all-in (incl. land)
Land $/SF
$85
land value only
Land Value Share
9%
Year Built
2020
~6 yrs old
Eff. Tax Rate
1.970%
total tax ÷ market value
Est. Annual Tax
$2,777,885
2025 taxable × rate

Value Composition: Land carries 9% of market value ($12,107,502 land vs $123,631,828 improvements), about $85/SF of land. Most value sits in the improvements, so building condition, age (~6 yrs), and rent roll drive the underwriting.

Submarket Position: At $135,739,330, this parcel sits in the top quartile (≥75th percentile) of Land/Vacant property in Travis County — county median $84,423 (P25 $24,862 / P75 $362,804, n=35,611). Land/Vacant here is the broad TCAD category — every land/vacant 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 -3.8% Base-scenario CAGR (Based on 2021–2026 preliminary trend, projected forward from 2026), the model projects market value near $120,420,546 by 2031, with an estimated annual tax burden around $2,268,413. 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.

Property Tax & County News Travis County · live feed
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Headlines via Google News for “Travis County property tax” / Travis Central Appraisal District. Dates and sources as published; links open the original source in a new tab. Updated hourly.
Improvement Detail
Improvement Value
$123,631,828
Main Area
86,269 SF
Gross Building Area
868,104 SF
Year Built
2020
TCAD's page also shows Class CD, Exterior Wall, Number of Units, and EFF Year Built per component, plus an "Improvement Features" block (Foundation, Roof Style, Roof Covering, etc.) — not in Parcelytics' current dataset (see footer), so left out here rather than guessed.
7 components · show ▾hide ▴
Code Description SF In Gross
187 PARKING GARAGE 548,000 SF ✓
ADDL Additional Floor 167,025 SF ✓
3RD 3rd Floor 33,405 SF ✓
4TH 4th Floor 33,405 SF ✓
5TH 5th Floor 33,405 SF ✓
2ND 2nd Floor 32,847 SF ✓
1ST 1st Floor 20,017 SF ✓
Source: TCAD Improvement Detail Records. ✓ included in Gross Building Area · ✗ excluded (site improvement, SF-measured attribute, or unconfirmed "Sketch Only"). Component list is aggregated by component code across the whole parcel — TCAD's own per-improvement (imp_id) grouping and wall/roof/ foundation attribute data are not captured by Parcelytics' current loader.
Post-Acquisition Tax Estimate Estimate · Not a prediction
Property: 86,269 SF main area · 868,104 SF gross · 3.270 ac lot
$

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.

Rate Environment
Historical Tax Rates by Entity (Travis County)
Entity 2021 Rate 2022 Rate 2023 Rate 2024 Rate 2025 Rate YoY (2024→25) Amt Due Amt Paid Balance
IAU Austin ISD 1.0617% 0.9966% 0.8595% 0.9505% 0.9252% -0.0253% $1,207,386.00 $1,207,386.00 Paid
CAT City of Austin 0.5410% 0.4627% 0.4458% 0.4776% 0.5240% +0.0464% $683,842.19 $683,842.19 Paid
TCO Travis County 0.3574% 0.3182% 0.3047% 0.3444% 0.3758% +0.0314% $490,477.73 $490,477.73 Paid
THD Travis Central Health 0.1118% 0.0987% 0.1007% 0.1080% 0.1180% +0.0101% $154,020.02 $154,020.02 Paid
ACT Austin Community College 0.1048% 0.0987% 0.0986% 0.1013% 0.1034% +0.0021% $134,937.00 $134,937.00 Paid
Combined Rate 2.1767% 1.9749% 1.8092% 1.9818% 2.0465% +0.0647% $2,670,662.94 $2,670,662.94 Paid
Rate columns (2021–2025) from Travis County tax rate records. 2025 billing from Travis County Tax Office open data. — = entity not in rate records for that year.
2025 Tax Burden — Entity Split
IAU
45.2% $1,207,386
CAT
25.6% $683,842
TCO
18.4% $490,478
THD
5.8% $154,020
ACT
5.1% $134,937
Total: $2,670,663
2025 billing by taxing entity, ranked by share of total. From Travis County Tax Office open data.
2025 Tax by Entity — Rate, Amount & Share
Entity Tax Rate Amount Due Share
IAU Austin ISD 0.9252% $1,207,386.00 45.2%
CAT City of Austin 0.5240% $683,842.19 25.6%
TCO Travis County 0.3758% $490,477.73 18.4%
THD Travis Central Health 0.1180% $154,020.02 5.8%
ACT Austin Community College 0.1034% $134,937.00 5.1%
Total 2.0465% $2,670,662.94 100.0%
Value History 2021–2026
Current & Preliminary Values
2026 Preliminary Preliminary 2025 Certified Certified Change 2025→2026
Market Value $146,079,496 $135,739,330 +7.6%
Assessed Value $146,079,496 $135,739,330 +7.6%
Land Value $12,107,502 $12,107,502 +0.0%
Improvement Value $133,971,994 $123,631,828 +8.4%
Taxable Value $146,079,496 $135,739,330 +7.6%
Total Tax 2026 = estimate
~$2,989,495
Estimated
~$2,670,663
Partial
2026 from June 9, 2026 TCAD preliminary export — subject to change; certified July 25, 2026. No 2026 tax billing until post-certification. Estimated 2026 Total Tax = 2026 preliminary taxable value × 2025 blended entity rates. Actual 2026 tax set after certification and entity budget adoption.
Value History (2021–2026)
Year Market Value Land Value Imprv Value Value Limitation Adj (−) Net Appraised (Assessed) Taxable Value Total Tax Source
2026 Pre $146,079,496 $12,107,502 $133,971,994 — $146,079,496 $146,079,496 Not yet — post-cert Preliminary
2025 $135,739,330 $12,107,502 $123,631,828 — $135,739,330 $135,739,330 ~$2,670,663 Partial
2024 $148,131,782 $12,107,502 $136,024,280 — $148,131,782 $148,131,782 $2,820,256 Verified
2023 $172,724,075 $12,107,502 $160,616,573 — $172,724,075 $172,724,075 $2,907,341 Verified
2022 $206,803,700 $9,258,678 $197,545,022 — $206,803,700 $206,803,700 $3,919,037 Verified
2021 $177,205,800 $8,546,472 $168,659,328 — $177,205,800 $177,205,800 $3,625,031 Verified
Data sources: 2025 — TCAD Certified Appraisal Export (Appraisal: Certified — this describes property value data, not tax billing; see each row's Source column above for billing confidence). 2021–2024 values — Texas Comptroller Annual Jurisdiction Roll (AJR). 2021–2024 tax — sourced directly from Travis County Tax Office billing records (Verified); this is a comprehensive countywide billing load, not a rate-based estimate or portal receipt. See the "2021–24 billing" badge above for this specific parcel's coverage. 2026 — TCAD Preliminary Export, June 9, 2026 (Preliminary — subject to change until July 25, 2026 certification). The totals above are what's Verified for 2021–2024. This page's per-entity billing breakdown (the "2025 Tax by Entity" table) is shown for 2025 only. ! = assessed value exceeds market value in source data — known AJR data quality issue. "Value Limitation Adj" is the same homestead-cap deduction shown in the Current Values panel, computed per year as Market − Assessed. TCAD's own page also shows "Special Use Land Market" and "Special Use Exclusion" — not in Parcelytics' dataset, so they're omitted here rather than shown as $0 (see Current Values panel note).
Value Trend
Year-over-Year Growth & Assessment Metrics
Year MktVal YoY Assessed YoY Asmt Ratio Eff. Tax Rate Coverage
2026 +7.6% +7.6% ~100% Not available Partial
2025 -8.4% -8.4% ~100% Not available Partial
2024 -14.2% -14.2% ~100% No billing data Verified
2023 -16.5% -16.5% ~100% No billing data Verified
2022 +16.7% +16.7% ~100% No billing data Verified
2021 base year — ~100% No billing data Verified
Cumulative market value growth (earliest valid year → 2025): -23.4%
Verified = 2025 data with real billing. Partial = 2021–2024 rows in this table reflect AJR appraisal values; billing fields in this table aren't populated for those years (see the Value & Tax History table above for verified 2021–2024 billing). YoY = year-over-year percent change. Assessment ratio = assessed ÷ market.
Annual Trends Tax billing 2025 only
12 Month Hist. Avg Forecast Avg Peak When Trough When
Market Value Growth +7.6% -3.0% -3.8% +16.7% 2022 -16.5% 2023
Assessment Ratio 100.0% 100.0% — 100.0% 2021 100.0% 2021
Effective Tax Rate (2025) 1.9700% 1.9700% — 1.9700% 2025 1.9700% 2025
Tax Amount
⚑ 2025 total is a derived or partial figure, not independently confirmed 		$2,670,663 $3,188,465 ~$2,542,376 $3,919,037 2022 $2,670,663 2025
12 Month = most recent available year-over-year figure (2025→2026 preliminary if loaded, else 2024→2025). Hist. Avg = average across available AJR 2021–2026 data. Forecast Avg = average of 5-year projection (estimated, not a recorded value). Peak / Trough = highest / lowest observed in the dataset; "When" = year it occurred.
Risk Indicators
Risk Indicators
✓
No risk indicators flagged

No large value jumps, delinquencies, or data anomalies found for this parcel.

6-Year Projection Estimates Only
5-Year Tax Projection — Scenario Bands ⓘ Estimates Only
Show illustrative scenario:
Year ~Mkt Value ~Assessed ~Rate ~Ann. Tax Value Δ
2027 ~$140,543,747 ~$140,543,747 ~2.0139% ~$2,830,462 -3.8%
2028 ~$135,217,778 ~$135,217,778 ~1.9814% ~$2,679,189 -7.4%
2029 ~$130,093,638 ~$130,093,638 ~1.9488% ~$2,535,316 -10.9%
2030 ~$125,163,681 ~$125,163,681 ~1.9163% ~$2,398,500 -14.3%
2031 ~$120,420,546 ~$120,420,546 ~1.8837% ~$2,268,413 -17.6%
These are illustrative scenarios, not statistical confidence ranges. ¹ Based on 2021–2026 preliminary trend, projected forward from 2026. Low: CAGR −2 pp, rates flat. Base: historical CAGR + rate trend (avg YoY change, 2021–2025). High: CAGR +2 pp, rates trend ×1.5. Actual values set by TCAD appraisal and taxing budgets each year.
Formula (per year i = 1–5 years ahead of the baseline year above): Market Value = Base Market × (1 + CAGR)i. Assessed Value = min(Base Assessed × 1.10i, Market Value) if this parcel carries a homestead cap, else = Market Value. Rate = max(0%, Current Combined Rate + Avg. Annual Rate Change × band multiplier × i). Est. Tax = Assessed Value × Rate ÷ 100. Band multiplier: Low = 0 (flat rates), Base = 1.0, High = 1.5. CAGR: Base = observed value CAGR over the baseline window; Low = max(−5%, Base − 2 pp); High = Base + 2 pp.
Submarket Position
Where This Property Stands — Land/Vacant Benchmark

In 2025, this property's market value of $135,739,330 places it in the top 25% for Land/Vacant properties in Travis County (35611 comparable) — 1608× the county median of $84,423. Land/Vacant here is the broad TCAD category — every land/vacant 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 $135,739,330 $24,862 $84,423 $362,804 ↑ Top 25% +2.1%
2024 $148,131,782 $23,000 $66,000 $328,966 ↑ Top 25% +0.0%
2023 $172,724,075 $24,692 $71,500 $270,000 ↑ Top 25% +0.0%
2022 $206,803,700 $15,000 $55,000 $180,000 ↑ Top 25% +100.0%
2021 $177,205,800 $8,000 $22,000 $81,900 ↑ Top 25% base yr
Benchmark figures for the Land/Vacant group. Bottom 25% / Median / Top 25% = 25th, 50th, 75th percentiles of county market values. Use Code filter runs a live query — count shown reflects actual records for the selected group. 2021–2024 values from the Texas Comptroller Annual Jurisdiction Roll (AJR) — TCAD's own certified data (Appraisal: Verified, unless a specific year's assessed value exceeds market value, in which case that year shows Partial; see the Value & Tax History table above for any flagged years). 2025 from Certified Export (Appraisal: Certified).
Documents & Sources
Source What it provides Coverage for this parcel Confidence
TCAD Certified Appraisal Roll ↗ Market, assessed, and taxable value; land/improvement split; exemptions 2025 Certified
Texas Comptroller Annual Jurisdiction Roll (AJR) Prior-year market and taxable value 2021–2024 Verified
TCAD Preliminary Export ↗ First-look 2026 appraisal value, subject to change at certification 2026 (exported June 9, 2026; certifies July 25, 2026) Preliminary
Travis County Rates History ↗ Adopted tax rate for each of this parcel's taxing entities 1990–2025 Verified
TaxCurOpenData Current-year (2025) tax billing, by taxing entity 2025 Partial
PIR bulk billing export Prior-year tax billing, Travis County Tax Office 2021, 2022, 2023, 2024 Verified
Satellite imagery (Esri World Imagery) Aerial view of the parcel Located by geocoding this parcel's address — may not resolve for every address —
Every row above is a real source that fed this specific parcel's page — not a static list. Sources that don't apply to this parcel (e.g. no delinquency on file) are simply omitted rather than shown empty. See the About page for the site-wide summary of these same sources.