St Marys
Investment Score
74
/100
AI Intelligence Summary
St Marys is an affordable, multicultural suburb in Western Sydney, approximately 50km from the CBD. Known for its diverse community with significant Pacific Islander, Middle Eastern, and Asian populations, it offers excellent transport connectivity via the T1 Western Line and Great Western Highway. The suburb features predominantly detached housing with some townhouses and units, making it popular with first home buyers and investors seeking competitive rental yields. St Marys benefits from established infrastructure including St Marys Senior High School, local primary schools, the St Marys Rugby League Club as a community hub, and growing amenities along Queen Street. With planned infrastructure improvements as part of the Western Sydney growth corridor and proximity to the future Western Sydney Airport, the suburb presents strong growth potential while maintaining its family-friendly character and affordability compared to Greater Sydney.
Strengths
- •Excellent transport connectivity with direct train access to Sydney CBD
- •Affordable property prices below Sydney median
- •Strong multicultural community with established amenities
- •Competitive rental yields attractive to investors
Opportunities
- •Western Sydney Airport development boosting connectivity
- •Infrastructure upgrades planned for the region
- •Growing cafe and restaurant scene along Queen Street
- •Potential for property value growth as Western Sydney develops
Considerations
- •Lower median household income compared to Greater Sydney
- •Distance from Sydney CBD may limit employment options
- •Limited premium dining and entertainment options
- •Traffic congestion on major arterial roads
Property Market
$720K
+4.2% 1yr
$485K
+3.8% 1yr
$620K
$580/wk
$475/wk
42
2.1%
68.0%
Price Growth
| Type | 1 Year | 3 Year | 5 Year |
|---|---|---|---|
| House | +4.2% | +18.5% | +32.8% |
| Unit | +3.8% | +16.2% | +28.5% |
Rental Yields
House Yield
4.2%
Unit Yield
5.1%
Townhouse Yield
4.4%
Investment Scorecard
Demand/Supply Ratio: 1.40
Demand exceeds supply — favourable for sellers
Tax & Financial Intelligence
CPA-grade analysis for St Marys at median house price
Save $26,930
+8% surcharge
$580/wk
Negatively geared
Reduces taxable income
~$297/week
Based on 6.6% p.a. growth (from 5-year trend), 50% CGT discount, 39% MTR
5-Year Hold
10-Year Hold
Investor Quick Summary
Entry cost (stamp duty)
$26,930
After-tax yield
2.56%
Weekly holding cost
$297/wk
10yr CGT (est.)
$118,685
Estimates based on FY2025 NSW rates at median house price. Assumes 80% LVR, 6.5% interest rate, 39% marginal tax rate ($135K-$190K bracket). Individual circumstances vary. This is general information only and not personal financial advice. Consult your CPA before making investment decisions. Local Knowledge Pty Ltd — Registered Tax Agent.
Demographics
11,500
32
$52K
per annum
58.0%
28.0%
22.0%
6.8%
48.0%
Dwelling Mix
Lifestyle & Community
25
8
1
50.0 km
Nearest Station: St Marys Station
Family-focused lifestyle with local sporting clubs, parks, growing dining scene, and community events. Good access to Penrith CBD for major shopping and entertainment.
Interested in St Marys?
Get a personalised buyer brief with AI-powered property intelligence for this suburb.
Data sourced from multiple sources. Last updated 29 March 2026.