
Rare space, flexibility, and lifestyle await in sought-after Onion Creek, featuring a highly desirable FHA assumable loan at just 2.875%. Set on an expansive .316-acre corner lot within one of South Austin’s most established communities, this thoughtfully updated home offers the perfect blend of everyday comfort, entertaining space, and modern functionality. Mature trees, abundant parking, and exceptional outdoor amenities create a property that stands apart from the competition. The side-entry garage, extended paved parking area, and oversized lot provide room for up to five off-street vehicles, offering flexibility for guests, hobbies, or multi-driver households. Outdoors, enjoy a true backyard retreat featuring an expansive covered aggregate patio with lighting, a greenhouse with electricity, storage shed, dedicated dog run, and beautifully landscaped spaces designed for entertaining, gardening, and relaxing year-round. Inside, soaring vaulted ceilings and a floor-to-ceiling fireplace anchor the spacious living room, while the adjacent dining area is bathed in natural light from a dramatic wall of windows and French doors that seamlessly connect indoor and outdoor living. A wet bar adds convenience and charm for hosting family and friends. The updated kitchen combines style and functionality with quartz countertops, tile backsplash, updated sink, Delta Touch2O faucet, abundant cabinetry, and a sunny breakfast area. A dedicated executive office and CAT 6 wiring throughout provide the connectivity today's buyers need. The private downstairs primary suite serves as a peaceful retreat, complete with dual vanities, two closets including a walk-in closet, and a Jacuzzi soaking tub overlooking a private garden area. Upstairs, two secondary bedrooms share a Jack-and-Jill bath with separate vanities, creating an ideal layout for family or guests. Residents of Onion Creek enjoy 24-hour security, a golf-cart-friendly atmosphere, and optional membership at Onion Creek Club.
Property Type
Residential
Year Built
1981
Lot Size
0.32 acres
$/Sq Ft
$226
HOA
$110/mo
Garage
2 spaces
Listed by Bramlett Partners
Verified property facts
10400 La Costa DR is listed at $509,000 with 3 bedrooms, 2 full, 1 half bathrooms, 2,256 square feet, 0.32-acre lot. This places it above the 78747 median of $369,990.
10400 La Costa DR 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.
10400 La Costa DR is a Residential built in 1981 featuring 3 bedrooms, 2 full, 1 half bathrooms, 2,256 square feet, 0.32-acre lot.
10400 La Costa DR 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 10400 La Costa DR is $7,439. 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.
25+ years advising buyers and sellers in this community
Property Details
Features
Appliances
Flooring
Features
Construction
Lot Features
Fencing
Foundation
Patio / Porch
Parking
Waterfront
Price Change 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 |
|---|---|---|---|---|
2025-16.5% | — | $474,201 | — | — |
2024-3.3% | — | $568,006 | $72,000 | $437,995 |
2023+65.0% | — | $587,613 | $60,000 | $508,006 |
2022 | — | $356,200 | $60,000 | $527,613 |

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% ($102K)
$509,000
Luxury property intelligence
A sourced read on Onion Creek Sec 03 pricing, timing, and property scale. No automated valuation claim.
List price
$509,000
Price per sqft
$226/sqft
Vs. Onion Creek Sec 03 median
Not available
Days on market
163 days
Original to current
$63.5K reduction
$572.5K original
Active inventory context
Ask for current inventory
Source: MLS Grid / Unlock MLS and Keenan Group review as of Jul 25, 2026.
Request Private Market AnalysisZIP-level neighborhoods, schools, lifestyle, and Austin market context
District guide, nearby schools, and homes by attendance area
Private Austin CMA, TCAD context, and pricing strategy
Pricing, prep, launch timing, and Compass marketing strategy
#1 ABOR Team 2024 with $1B+ career sales volume
With 20% down ($101,800) on a 30-year fixed mortgage at approximately 6.75%, the estimated monthly payment for 10400 La Costa DR is around $3,261 including principal, interest, and estimated taxes. Actual payment varies by rate, down payment, insurance, and HOA fees.
At $509,000, 10400 La Costa DR is in the Onion Creek Sec 03 market where there are currently 162 active listings in 78747.
10400 La Costa DR was built in 1981 (45 years ago). Buyers should budget for potential updates to major systems.
10400 La Costa DR includes verified waterfront access: None. Buyers should confirm shoreline, dock rights, and floodplain status during due diligence.
10400 La Costa DR is part of a managed community with HOA dues of $110 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.
11 events on record
Current Price
$509,000
Timeline data compiled from MLS records and public records. Information deemed reliable but not guaranteed.
| Year | Taxes | Total Assessment | Land | Additions |
|---|---|---|---|---|
2025-16.5% | — | $474,201 | — | — |
2024-3.3% | — | $568,006 | $72,000 | $437,995 |
2023+65.0% | — | $587,613 | $60,000 | $508,006 |
2022 | — | $356,200 | $60,000 | $527,613 |
Timeline merges MLS activity (when permitted) with public records. Some details may be restricted to registered VOW clients.
Best Match
Balanced against price, location, and layout so nearby lookalikes rise first. Similar properties in Onion Creek Sec 03
Active listings near 10400 La Costa DR
Recent sales for market context