True annual cost of living in Thornleigh, NSW 2120
Living in a house in Thornleigh costs about $10,257 a year: council rates, water and sewerage, commute and home insurance combined. Thornleigh sits 19.7 kilometres from Sydney CBD. Unit costs reach $10,897, with the $2,300 body corporate levy accounting for the entire difference between the two. At 19.7km from the CBD, transport mode shifts the annual total by $2,632. The gap widens as commute costs rise.
Estimated from AER residential benchmarks for Thornleigh's climate zone at 2025 rates. Get the free report for a breakdown by your exact number of occupants.
Is it cheaper to drive or take public transport from Thornleigh to the CBD?
Public transport saves Thornleigh residents $2,632 per year. Annual commute cost by car is $5,018 versus $2,386 by public transport using the Opal network.
What are the council rates in Thornleigh?
Thornleigh falls under Hornsby Council. The average residential rate for 2026-27 is $1,541 per year for an owner-occupied house, based on OLG data uplifted by the council's IPART rate peg. Individual properties pay more or less depending on land value. Unit owners in strata schemes pay $1,541 per year. These figures cover the general rate only and exclude waste and cleansing charges.
What does it cost to run a unit in Thornleigh?
Running a unit in Thornleigh costs approximately $10,897 per year by car or $8,265 by public transport. This includes council rates of $1,541, water and sewerage $1,548, estimated body corporate levy of $2,300, and contents insurance of $490. Body corporate fees vary significantly between buildings. Always confirm the actual levy before purchasing.
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Data sources: Council rates: Hornsby rates (OLG 2024-25 + IPART 2026-27 peg). Water: Sydney Water 2026-27. Commute: ATO cents per kilometre rate 2025–26 (88c/km). Insurance: AI-estimated, disclosed as estimate. Schools: ACARA ICSEA 2025. Risk: Fire: NSW RFS Bush Fire Prone Land. Flood: modelled from 30m elevation (topographic). Data updated 2026-07. Cost estimates are for comparison purposes only and do not constitute financial, insurance, or credit advice.