Oran Park facts that change the job
Houses, and mortgages
At the 2021 Census, 86.9% of the suburb's occupied homes were separate houses. 53.6% were owned with a mortgage and only 7.9% owned outright, against 31.5% across NSW.
Camden Council
Every part of Oran Park is in the Camden council area, so Camden Council's flood and tree rules apply.
Flood studies keep moving
Council adopted a review of the Upper South Creek Flood Study on 14 February 2023 because of ongoing development in Oran Park, Gregory Hills and Leppington. It says flood studies show the ground as it was when each study began.
Frost in the south-west
The Bureau of Meteorology's Camden Airport station, on records from 1971 to 2026, averages 39.9 days a year at or below 2°C and 16.2 at or below 0°C. Its lowest reading is -6.0°C.
Replacing a hot water system
Sydney Water says replacing a hot water system is a job for a licensed plumber, and to ask for a Certificate of Compliance when it's done. NSW also requires a tempering valve whenever a water heater is replaced, like-for-like swaps included, so showers, baths, handbasins and bidets get water no hotter than 50°C.
For system types, see hot water in Sydney. Read NSW hot water discounts before you choose a heat pump.
Frost and outside pipes
Frost is rare near the harbour but regular in Sydney's west and south-west. Before a cold snap, Sydney Water suggests wrapping above-ground pipes and the meter in foam, rubber, newspaper or a towel, or covering the meter with a bucket or box.
If a pipe freezes, let it thaw as the day warms. Never pour boiling water on it: that can crack the pipe. A split after a frosty night is a burst pipe job.
Extensions, pools and granny flats
Digging or building over Sydney Water's pipes can damage them. Sydney Water asks owners to buy the relevant diagrams, lodge plans through Sydney Water Tap in, and check with Council whether development consent is needed. A sewer service diagram shows your private wastewater pipes and where they join Sydney Water's system.
That joining point matters. You own the wastewater pipes up to and including it, and it can sit beyond your boundary. Camden's updated Nepean River Flood Study also covers all or part of Oran Park, so ask Council about flooding at your address before you plan drainage.
What we would do
Before an extension, pool or granny flat, get the sewer service diagram from Sydney Water and give it to the plumber with your plans. It shows where your private line runs, so nobody builds over it by accident. For a hot water swap, ask for the tempering valve and the Certificate of Compliance to be written into the quote. We'll match you with a plumber who specialises in that kind of work, whether drainage or hot water.