The Real Monthly Cost Breakdown
Zillow shows you the listing price. What it doesn't show you is what you'll actually pay every month once you own the home. Here's the full picture for Westlake Hills in 2026:
| Cost Component | Monthly Amount | Annual Amount | Notes |
|---|---|---|---|
| Principal & Interest | $6,437 | $77,248 | 6.4% rate, 20% down, 30-yr fixed |
| Property Tax | $2,275 | $27,300 | 2.1% effective rate in Austin |
| Homeowners Insurance | $400 | $4,800 | Estimated for Austin market |
| HOA Fees | $400 | $4,800 | Typical for Westlake Hills area |
| Maintenance Reserve | $1,083 | $13,000 | 1% of home value annually |
| TOTAL All-In Monthly | $10,596 | $127,148 | What you actually pay |
What Salary Do You Need to Own in Westlake Hills?
Using the standard 28% front-end housing ratio, you need $407,671/year in gross income to comfortably afford the median home in Westlake Hills at current rates. That's the salary required just for housing — before food, transportation, retirement savings, or healthcare.
The median household income in Austin is approximately $224,219/year. That means the typical Austin household is $183,452 short of what's needed to buy in Westlake Hills.
What Most Buyers Miss About Westlake Hills
The listing price is only the beginning. Property taxes in Austin run approximately 2.1% of assessed value — on a $1,300,000 home, that's $2,275/month before you've paid a dollar toward the mortgage.
Homeowners insurance in this market averages $400/month — higher than national averages due to local risk factors. HOA fees in Westlake Hills typically run $400/month for common area maintenance and amenities.
Add a 1% annual maintenance reserve (the industry standard) and your true all-in monthly cost reaches $10,596 — not the $6,437 the mortgage payment calculator shows.