Free Energy-Efficient House Plans in Australia (2026)
A curated list of free, government-backed and open-source house plans that are 7-star capable and BASIX-ready — plus exactly what you still need to pay for before you build.
Read this before you download
A free plan is a starting point, not a permit. Under NCC 2022, every new home in Australia needs a 7-star NatHERS rating and a Whole of Home score of 60. The plans below are engineered to hit those numbers when they're oriented and built correctly for your climate zone.
To actually build one you still need: council-ready drawings from a registered designer, a NatHERS assessment ($300–$600), and — in NSW — a BASIX certificate.
The five best free-plan sources in Australia
Design for Place (yourhome.gov.au)
FreeAustralian Government — Department of Climate Change, Energy, the Environment and Water
The flagship free plan suite. Nine designs covering small, medium and large footprints, each engineered for good orientation and cross-ventilation. Includes narrow-lot and sloping-site variants.
Your Home Technical Manual
FreeAustralian Government — Your Home
The definitive Australian guide to passive-solar design, insulation, glazing, hot water and materials. Not a plan itself, but the reference your architect will already own.
Nightingale Housing (open-source floorplans)
Free (open source floorplans)Nightingale Housing (not-for-profit)
Fossil-fuel-free, single-corridor apartment typologies with published floorplates. Popular with community-titles groups and small developers.
Sustainability Victoria — Zero Net Carbon Homes
Free case studies + specification listsSustainability Victoria
Real-world case studies of Victorian 7.5-star+ homes with published floorplans, HVAC and glazing specs. Not a stock plan you build directly, but excellent inputs for your designer.
Renew (Sanctuary magazine) sample plans
Free article archiveRenew (formerly ATA)
Hundreds of published homes with floorplans, orientation notes and NatHERS ratings. Best for inspiration and briefing rather than direct construction.
What a free plan does not include
- Council-ready construction drawings (you still need a draftsperson or architect to detail the plan for your block).
- A NatHERS certificate — required for building approval under NCC 2022.
- A Whole of Home score for hot water, HVAC, cooking and PV.
- A BASIX certificate (NSW only) or state-equivalent thermal compliance.
- Structural engineering, bushfire assessment (BAL), or energy modelling for non-standard sites.
- Site-specific orientation adjustments — the same plan can score anywhere from 5 to 8 stars depending on which way north is.
How to turn a free plan into a permit-ready 7-star home
- Download the plan and check it fits your block orientation — living areas should face north (±20°).
- Confirm your climate zone and adjust insulation/glazing to match.
- Engage a registered building designer or architect to produce construction drawings.
- Book a NatHERS accredited assessor to model the design and confirm 7 stars.
- For NSW builds, generate a BASIX certificate. For QLD, check your disclosure requirements.
- Submit for building approval and start construction.
FAQ
Are there really free energy-efficient house plans in Australia?
Yes. The federal government's Your Home program publishes the Design for Place plans free of charge, and several state governments and universities have released BASIX-ready and 7-star capable concept plans. They are free to download but you still need a NatHERS assessment and a registered building designer or architect to adapt them to your block, climate zone and council requirements.
Will a free plan automatically get a 7-star NatHERS rating?
No plan is guaranteed to hit 7 stars everywhere. Star rating depends on your climate zone, block orientation, and the exact glazing/insulation you build with. Design for Place plans are engineered to be 7-star capable in most zones when built to spec and oriented correctly, but a NatHERS accredited assessor still needs to model your specific build.
What's the catch with free house plans?
There isn't a catch — they're published to raise the baseline of Australian housing. The trade-offs are: limited layouts (usually 1–4 bedroom rectangular footprints), no council-ready documentation, and you still pay a designer or draftsperson to produce construction drawings, plus a NatHERS assessment ($300–$600) for permit approval.
Can I use a free plan for BASIX in NSW?
Yes. BASIX-ready plans are designed with the NSW BASIX targets in mind, so a designer can adapt them into a compliant submission with minimal changes. You'll still need a BASIX certificate and, from October 2023, a NatHERS assessment for the thermal component.
Do free plans work for the NCC 2022 7-star minimum?
The current Design for Place suite was updated to reflect the NCC 2022 7-star and Whole of Home 60 benchmarks. Older archived plans (pre-2023) usually need upgraded glazing, added insulation and updated hot-water/HVAC specs to comply — a NatHERS assessor will tell you exactly what to change.