Thornhill Park vs Rockbank.
Comparing two suburbs with median house prices of $600,700 and $620,800.
Thornhill Park (median $600,700) is roughly 3% cheaper to buy into than Rockbank ($620,800).
On school quality, the average ICSEA across schools serving Rockbank (1031) sits above Thornhill Park (1006).
For buyers
Thornhill Park is the lower entry point at $600,700 median, 3% below the other suburb. For first home buyers, that translates to a smaller deposit and lower stamp duty bill.
For investors
Thornhill Park offers the higher gross rental yield (3.21% vs 3.11%), favouring cash-flow investors.
For families
Rockbank edges out on average school ICSEA (1031 vs 1006). Thornhill Park also has a higher family-household share (83% vs 71%), so the catchment community skews family-heavy.
Common questions
Is Thornhill Park or Rockbank cheaper to buy in?
Thornhill Park has the lower median house price at $600,700, roughly 3% below Rockbank ($620,800). The gap on units is usually similar but worth checking on the full suburb profiles.
Does Thornhill Park or Rockbank have better schools?
On average school ICSEA (the ACARA index that benchmarks educational advantage), Rockbank scores 1031 vs 1006 in Thornhill Park. ICSEA is a school-community indicator, not a quality rating, so always check NAPLAN results and catchment boundaries for the specific address you're considering.
Which suburb has higher rental yield, Thornhill Park or Rockbank?
Gross rental yield on houses is 3.21% in Thornhill Park vs 3.11% in Rockbank. Gross yield equals annual rent divided by purchase price. Net yield (after strata, rates, insurance, agent fees and maintenance) typically runs 1.5-2 percentage points lower.
The numbers behind the take
Price & Market
Rental
Lifestyle & Demographics
Risk & Hazard
Schools
Climate
Green dot = better on that metric (lower price, higher growth, higher walkability, lower risk).
Compare Thornhill Park against another suburb