Calderwood, NSW
BASIX & NatHERS assessments in Calderwood
BASIX certificates and 7-star NatHERS ratings for new homes, duplexes and granny flats in Calderwood and surrounds, Shellharbour City Council area.
BASIX & NatHERS for Calderwood homes
Calderwood is a major Lendlease master-planned community on the edge of the Illawarra, with the Calderwood Valley estate delivering thousands of new homes between Wollongong and the Macarthur region. Its milder, coastal-influenced climate shifts the focus toward balanced glazing and good insulation for a 7-star NatHERS rating.
New homes in Calderwood need a BASIX certificate and NatHERS assessment for the DA or complying development certificate. As a developer-led estate with design guidelines, Calderwood has mostly planned lots where orientation follows the masterplan, so early thermal modelling helps you meet both the guidelines and the rating.
Calderwood sits in Shellharbour City Council and enjoys a milder climate than western Sydney, with the Illawarra escarpment moderating extremes. Heating demand matters more here in winter, so insulation, draught sealing and solar access are key, balanced against summer comfort. We model each home for the correct local NatHERS climate zone.
What matters when building in Calderwood
- Insulation and draught sealing to manage cooler Illawarra winters
- North-facing living areas and glazing to capture winter sun
- Balanced glazing that avoids summer overheating on elevated lots
- Roof and wall insulation matched to the estate’s design guidelines
- Whole-of-home compliance for hot water, lighting and solar PV under NCC 2022
Read more in our guides on reaching a 7-star rating, NSW climate zones and BASIX requirements. We also cover the wider Wollongong & Illawarra region.
FAQ
Calderwood - common questions
Yes. New homes in Calderwood need a BASIX certificate and NatHERS assessment for the DA or CDC, lodged with Shellharbour City Council. We prepare both together.
Yes. Calderwood’s Illawarra climate is milder with cooler winters, so we tune the design toward winter solar access and insulation rather than only summer heat.
New homes need a minimum 7-star NatHERS rating under NCC 2022, plus the whole-of-home energy budget. We design to reach 7 stars for the local climate.
Standard turnaround is 3-4 business days, with 24-hour express available for urgent Calderwood projects.
Ready to get started?
Send us your plans and we’ll return approval-ready documentation in 3-4 days - with 24-hour express available.