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1300 SOUTHPORT DR AUSTIN, TX 78704

Travis County, TX · Multi-Family Appraisal: 2025 Certified Billing: 2025 Partial 2021–24 billing ✓
2025 Certified
Market Value
$6,048,000
2025 Verified
Taxable Value
$6,048,000
2025 Verified
Total Tax
~$123,771
2025 Partial
Effective Tax Rate (2025)
2.0500%
2025 Tax ÷ 2025 Market Value Partial
2026 Preliminary
Market Value
$5,877,270
-2.8% 2025 → 2026 Preliminary
Taxable Value
$5,877,270
2026 Preliminary
Est. 2026 Total Tax
~$120,277
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 21, 2026
Valuation Date
Jan 1
Notices Mailed
Apr 15
Protest Deadline
May 15
Rates Adopted
Sep 1
Bills Mailed
Oct 1
Payment Due
Jan 31
This parcel's 2026 values are still Preliminary as of today.
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 SOUTHPORT A&G GROUP INC
Parcel ID 0407070129
Short ID 310060
Type Real
Use Code 06 Apartment 26–49 Units
Valuation Income
Improvement SF 30,240 SF
Land SF 110,381 SF
Acres 2.534
Year Built 1986
Legal LOT 1 BLK B AMENDED PLAT OF LTS 9-12 SOUTHRIDGE SEC 6
Neighborhood 06SC1
View this property on TCAD ↗
Current Values 2025 Certified
Land$3,477,002
Special Use Land MarketNot Available
Total Land $3,477,002
Improvement$2,570,998
Total Improvement $2,570,998
Market$6,048,000
Special Use Exclusion (−)Not Available
Appraised$6,048,000
Value Limitation Adjustment (−)—
Net Appraised (assessed) $6,048,000
Taxable Value $6,048,000
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 risen +14.3% from $5,292,000 (2021) to $6,048,000 (2025), a CAGR of 3.4% over 4 years. Growth has been relatively flat for this asset class. 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 Multi-Family parcel countywide rose +19.0%, so this parcel has lagged the broader multi-family 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 $123,771. Austin ISD is the largest single contributor, at 45.2% of the total 2025 levy.

Asset Class: Multi-family residential. 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)
30,240 SF
living area
Gross Building
30,542 SF
enclosed area
Land
110,381 SF
2.534 ac
Value / Bldg SF
$200
all-in (incl. land)
Land $/SF
$32
land value only
Land Value Share
57%
Year Built
1986
~40 yrs old
Eff. Tax Rate
2.050%
total tax ÷ market value
Est. Annual Tax ⓘ
$123,771
2025 taxable × rate

Value Composition: Land carries 57% of market value ($3,477,002 land vs $2,570,998 improvements), about $32/SF of land. Land and improvements both carry meaningful weight; value is balanced between the structure and its site.

Submarket Position: At $6,048,000, this parcel sits in the top quartile (≥75th percentile) of Multi-Family property in Travis County — county median $519,086 (P25 $438,150 / P75 $747,031, n=12,570). Multi-Family here is the broad TCAD category — every multi-family 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 +2.1% Base-scenario CAGR (Based on 2021–2026 preliminary trend, projected forward from 2026), the model projects market value near $6,527,268 by 2031, with an estimated annual tax burden around $122,957. 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
$2,570,998
Main Area
30,240 SF
Gross Building Area
30,542 SF
Year Built
1986
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.
11 components · show ▾hide ▴
Code Description SF In Gross
SO Sketch Only 39,007 SF ✗
551 PAVED AREA 30,000 SF ✗
1ST 1st Floor 15,120 SF ✓
2ND 2nd Floor 15,120 SF ✓
591 MASONRY TRIM SF 4,746 SF ✗
011C PORCH OPEN 1ST COMM 4,446 SF ✗
012C PORCH OPEN 2 COMM 4,321 SF ✗
541 FENCE COMM LF 800 SF ✗
581C STORAGE ATT COMM 300 SF ✓
132 PLBG 5-FIXT AVG 1 SF ✓
242 OBS OVEN/BURN 1 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: 30,240 SF main area · 30,542 SF gross · 2.534 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% $55,956.10 $55,956.10 Paid
CAT City of Austin 0.5410% 0.4627% 0.4458% 0.4776% 0.5240% +0.0464% $31,692.55 $31,692.55 Paid
TCO Travis County 0.3574% 0.3182% 0.3047% 0.3444% 0.3758% +0.0314% $22,731.11 $22,731.11 Paid
THD Travis Central Health 0.1118% 0.0987% 0.1007% 0.1080% 0.1180% +0.0101% $7,138.03 $7,138.03 Paid
ACT Austin Community College 0.1048% 0.0987% 0.0986% 0.1013% 0.1034% +0.0021% $6,253.63 $6,253.63 Paid
Combined Rate 2.1767% 1.9749% 1.8092% 1.9818% 2.0465% +0.0647% $123,771.42 $123,771.42 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% $55,956
CAT
25.6% $31,693
TCO
18.4% $22,731
THD
5.8% $7,138
ACT
5.1% $6,254
Total: $123,771
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% $55,956.10 45.2%
CAT City of Austin 0.5240% $31,692.55 25.6%
TCO Travis County 0.3758% $22,731.11 18.4%
THD Travis Central Health 0.1180% $7,138.03 5.8%
ACT Austin Community College 0.1034% $6,253.63 5.1%
Total 2.0465% $123,771.42 100.0%
Value History 2021–2026
Current & Preliminary Values
2026 Preliminary Preliminary 2025 Certified Certified Change 2025→2026
Market Value $5,877,270 $6,048,000 -2.8%
Assessed Value $5,877,270 $6,048,000 -2.8%
Land Value $3,477,002 $3,477,002 +0.0%
Improvement Value $2,400,268 $2,570,998 -6.6%
Taxable Value $5,877,270 $6,048,000 -2.8%
Total Tax 2026 = estimate
~$120,277
Estimated
~$123,771
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 $5,877,270 $3,477,002 $2,400,268 — $5,877,270 $5,877,270 Not yet — post-cert Preliminary
2025 $6,048,000 $3,477,002 $2,570,998 — $6,048,000 $6,048,000 ~$123,771 Partial
2024 $5,292,000 $3,477,002 $1,814,998 — $5,292,000 $5,292,000 $104,878 Verified
2023 $5,745,600 $3,477,002 $2,268,598 — $5,745,600 $5,745,600 $103,952 Verified
2022 $5,309,000 $3,477,002 $1,831,998 — $5,309,000 $5,309,000 $104,849 Verified
2021 $5,292,000 $3,477,002 $1,814,998 — $5,292,000 $5,292,000 $115,190 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 -2.8% -2.8% ~100% Not available Partial
2025 +14.3% +14.3% ~100% Not available Partial
2024 -7.9% -7.9% ~100% No billing data Verified
2023 +8.2% +8.2% ~100% No billing data Verified
2022 +0.3% +0.3% ~100% No billing data Verified
2021 base year — ~100% No billing data Verified
Cumulative market value growth (earliest valid year → 2025): +14.3%
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 -2.8% +2.4% +2.1% +14.3% 2025 -7.9% 2024
Assessment Ratio 100.0% 100.0% — 100.0% 2021 100.0% 2021
Effective Tax Rate (2025) 2.0500% 2.0500% — 2.0500% 2025 2.0500% 2025
Tax Amount
⚑ 2025 total is a derived or partial figure, not independently confirmed 		$123,771 $110,528 ~$121,947 $123,771 2025 $103,952 2023
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 ~$6,001,873 ~$6,001,873 ~2.0139% ~$120,874 +2.1%
2028 ~$6,129,118 ~$6,129,118 ~1.9814% ~$121,442 +4.3%
2029 ~$6,259,060 ~$6,259,060 ~1.9488% ~$121,979 +6.5%
2030 ~$6,391,757 ~$6,391,757 ~1.9163% ~$122,485 +8.8%
2031 ~$6,527,268 ~$6,527,268 ~1.8837% ~$122,957 +11.1%
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 — Multi-Family Benchmark

In 2025, this property's market value of $6,048,000 places it in the top 25% for Multi-Family properties in Travis County (12570 comparable) — 12× the county median of $519,086. Multi-Family here is the broad TCAD category — every multi-family 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 $6,048,000 $438,150 $519,086 $747,031 ↑ Top 25% -7.5%
2024 $5,292,000 $467,312 $564,206 $847,583 ↑ Top 25% -6.3%
2023 $5,745,600 $503,694 $616,727 $918,308 ↑ Top 25% +0.9%
2022 $5,309,000 $506,269 $614,560 $904,074 ↑ Top 25% +39.0%
2021 $5,292,000 $353,349 $436,046 $657,886 ↑ Top 25% base yr
Benchmark figures for the Multi-Family 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.