#1 Austin Board of Realtors Team 2024#1 Austin Board of Realtors Team 2024This property has sold on March 24, 2013. Looking for something similar? Contact us or browse available homes.
5109 Portmarnock CT
Austin, TX, 78747
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$329,500
last listedWhy you're seeing this property: Unlike major portals that hide off-market listings, we maintain the most comprehensive Austin property database. View market history, neighborhood data, and discover similar homes currently for sale. #1 Austin Realtor Team 2024.
Nicest home in Onion Creek! This immaculate home has been remodeled to the fullest and in like new condition. This home has been updated with a new roof, hard wood flooring, travertine bathrooms, granite counter tops, and SS appliances. Gorgeous open floor plan located at the end of a quiet cul-de-sac. This home is perfect for a family or someone looking to retire. Act fast this one will not last!!! FEMA - Unknown Restrictions: Yes Sprinkler Sys:Yes
Property Type
Residential
Year Built
1999
Lot Size
0.27 acres
$/Sq Ft
$136
HOA
$121/mo
Listed by Networth Realty of Austin
Property Details
Features
Appliances
Flooring
Features
Construction
Lot Features
Fencing
Foundation
Patio / Porch
Parking
Waterfront
Verified property facts
5109 Portmarnock CT is listed at $329,500 with 4 bedrooms, 2 full bathrooms, 2,417 square feet, 0.27-acre lot.
5109 Portmarnock CT is zoned for Austin ISD with assigned schools: Blazier (8/10) (elementary), Paredes (2/10) (middle), Akins (6/10) (high). School assignments should be verified directly with the district.
5109 Portmarnock CT is a Residential built in 1999 featuring 4 bedrooms, 2 full bathrooms, 2,417 square feet, 0.27-acre lot.
5109 Portmarnock CT is presented by the Keenan Group at Compass Real Estate, the #1 Austin Board of Realtors Team (2024) with 1,000+ career transactions and $1B+ in career volume across Austin's luxury market.
The most recent annual property tax for 5109 Portmarnock CT is $6,195. Texas has no state income tax, so property taxes are a primary revenue source. Rates vary by jurisdiction and exemptions. Verify current amounts with the county appraisal district.
#1 Austin Board of Realtors Team. Over 1,000 successful transactions with high-end expertise.
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Best Match
Balanced against price, location, and layout so nearby lookalikes rise first. Similar properties in Onion Crk Add
Listing timeline with current price, original ask, and market time.
Public record data from county appraisal records. Market value can differ from assessed value.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-6.3% | — | $589,276 | — | — |
2024+2.7% | — | $628,887 | $66,000 | $426,148 |
2023+53.5% | — | $612,412 | $66,000 | $562,887 |
2022 | — | $398,937 | $66,000 | $546,412 |
Zoned assignments come from the property school fields available to us. District context schools are shown only when an assigned tier is missing. Contact the school district directly to verify current boundaries and enrollment eligibility. Ratings from GreatSchools.org.
20% ($66K)
$329,500
Luxury property intelligence
A sourced read on Onion Crk Add pricing, timing, and property scale. No automated valuation claim.
List price
$329,500
Price per sqft
$136/sqft
Vs. Onion Crk Add median
Not available
Days on market
4,863 days
Original to current
No verified reduction
$329.5K original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of Apr 25, 2026.
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#1 ABOR Team 2024 with $1B+ career sales volume
With 20% down ($65,900) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 5109 Portmarnock CT is around $2,226 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
At $329,500, 5109 Portmarnock CT is in the Onion Crk Add market where there are currently 166 active listings in 78747.
5109 Portmarnock CT includes verified waterfront access: None. Buyers should confirm shoreline, dock rights, and floodplain status during due diligence.
5109 Portmarnock CT is part of a managed community with HOA dues of $121 quarterly. HOA-managed communities in Austin's luxury market typically provide amenities such as common areas, security, and exterior maintenance. Verify current dues and rules with the HOA directly.
Answers use visible listing facts, school context, and neighborhood data available on this page. Verify time-sensitive details before making decisions.
9 events on record
Current Price
$329,500
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-6.3% | — | $589,276 | — | — |
2024+2.7% | — | $628,887 | $66,000 | $426,148 |
2023+53.5% | — | $612,412 | $66,000 | $562,887 |
2022 | — | $398,937 | $66,000 | $546,412 |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
Recent sales for market context