NSW 2026 Pricing Guide
BASIX Certificate Cost in NSW 2026 — Full Price Breakdown
A BASIX certificate costs $80–$250 in NSW for 2026 — $80 is the Planning Portal lodgement fee and $100–$200 is the consultant fee. Bundle BASIX with a NatHERS assessment to save $50–$150.
BASIX certificate price by project type (2026)
| Project type | Lodgement fee | Consultant fee | Total |
|---|---|---|---|
| New single dwelling | $80 | $120–$220 | $200–$300 |
| Alterations & additions ($50k+) | $45 | $150–$300 | $195–$345 |
| Dual occupancy | $160 | $250–$450 | $410–$610 |
| Multi-dwelling (per unit) | $80 | $90–$180 | $170–$260 |
| Pool / spa only (40,000L+) | $45 | $80–$150 | $125–$195 |
Note: NSW Planning Portal lodgement fees are reviewed annually. Always confirm the current fee on the Planning Portal before lodging.
Bundle BASIX + NatHERS to save
Most NSW homeowners need both certificates. Ordering them together from one accredited assessor saves $50–$150 versus separate jobs because thermal modelling only runs once.
Separate
$500–$950
Bundled (recommended)
$450–$800
You save
$50–$150
What's included
- • Plans & specifications review
- • Data entry into the NSW BASIX tool
- • Thermal-performance modelling
- • Official BASIX certificate (lodgement-ready)
- • One round of minor revisions
- • Commitment schedule for builder
Hidden extras to watch
- • Re-issue fee if you change plans: $100–$200
- • Rush turnaround (under 48h): +30–50%
- • Plans markup (no CAD): $150–$400
- • NatHERS thermal report add-on: $200–$400
- • Council resubmission fee (if rejected): $45–$80
Who needs a BASIX certificate?
- All new residential builds in NSW
- Alterations and additions valued at $50,000 or more
- New swimming pools or spas over 40,000 litres
- Conversions of non-residential buildings to residential
Get BASIX quotes from NSW assessors
Tell us your postcode and project type. We'll match you with accredited BASIX assessors near you — free, no obligation.