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Single familyLake Austin, The Island at Mount Bonnell Shores4400 Island AveNo photo yet
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4400 Island Ave

Lake Austin, The Island at Mount Bonnell Shores · Austin, TX 78731
Market listingDesk analysisSingle family
Asking$6,250,000
I'm interested

This property is being displayed for real-estate discovery and analysis. It is not currently an investment offering through Realtix.

Overview

Beds
5
Baths
6
Square feet
7,219
Year built
1996
Lot
1.60 acres

A gated 1996 waterfront estate on about 1.6 acres in The Island on Lake Austin, with a separate one-bedroom guest house and a private two-slip dock. The listing reports 7,219 sq ft from public records.

Financials

From the listing

Asking price$6,250,000Reported · MLS reported
Price per sq ft$866Calculated
Reported rentNot disclosed by the listing
HOA (monthly)$250Reported · MLS reported

The pro forma appears once there is a price and a rent figure.

Realtix plan

Desk analysis complete, based on the listing and market data. Figures not confirmed by documents are marked as estimates. This is Realtix's own view, not investment advice.

Strategy: Lake Austin waterfront estate

Strengths

  • Lake Austin waterfront with a private two-slip dock
  • Gated enclave about 1.6 acres in size
  • Separate guest house adds flexibility

Risks

  • Very high price point with a thin buyer pool
  • Property taxes are large; the page shows an estimate that must be verified
  • 1996 systems and finishes may need updating

Catalysts

  • Renovation or modernization of a 1990s estate
  • Guest house could support multi-generational use

Due diligence still needed

  • Confirm shoreline frontage, dock permits and bulkhead condition
  • Get the current tax bill from Travis CAD
  • Inspect roof, HVAC and seawall
  • Review the HOA documents

Realtix screening score

Not scored yet. A score appears once there is a price, size, year built and an income figure.

Realtix preliminary screening score. Not investment advice, and it does not predict returns.

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Media

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Sources

Listing source
SearchAustinHomes (Austin MLS feed) · MLS #9276221
Listing brokerage
Moreland Properties
Last verified
2026-10-09

HOA (monthly): MLS reported, as of 2026-10-08

Updates

  • 2026-10-09 Listing checked against the source.
  • Listing 99 days on market as of the last check.