Services
Everything compliant. Nothing gated.
Every service below is delivered under a HERA membership, backed by professional indemnity insurance, and priced fixed-fee within 24 hours of us seeing your plans. No hourly billing. No hedged estimates.
NatHERS Assessments
Residential thermal performance rating — new builds, renovations, extensions.
The Nationwide House Energy Rating Scheme has been the primary vehicle for rating Australian home energy performance since 1993. Since NCC 2022 the minimum for new homes is 7 stars, plus a Whole-of-Home score that captures fixed appliances and on-site renewables on top of the thermal envelope.
- NatHERS Certificate (star rating + Whole-of-Home score)
- AccuRate or FirstRate5 model files
- Plain-English summary of what drives the rating
- Recommendations to lift stars without cost blowouts
- Up to two revisions included if plans change
BASIX Certificates
NSW Building Sustainability Index — energy, water, thermal comfort.
BASIX runs in parallel with NatHERS in NSW and is mandatory for most new residential DAs and renovations over certain thresholds. We issue compliant certificates covering the three mandatory categories (energy, water, thermal comfort) and align them with your NatHERS rating so certifiers sign off cleanly the first time.
- Signed BASIX Certificate for DA lodgement
- Alignment between BASIX + NatHERS (no conflicting numbers)
- Commitments schedule for the builder
- Pre-submission review with your certifier on request
Section J & JV3
NCC 2022 Part J for Class 2–9 commercial and multi-residential.
Energy efficiency provisions for commercial and multi-residential buildings — fabric, glazing, HVAC, lighting power density, sealing. We run Deemed-to-Satisfy first; where the design wants more glazing or a different fabric, we take the JV3 verification pathway and model the alternative against a reference building.
- Section J compliance report (DTS or JV3)
- J1V3 / JV3 thermal modelling where required
- Lighting Power Density calculations
- Glazing calculator output (U-value, SHGC)
- Targeted recommendations for non-compliant elements
Renovations & Extensions
Rating the existing envelope + the additions, together.
Renovations are rarely a straightforward star-rating exercise. We rate the whole dwelling (existing + proposed) and show where adding insulation, a different glazing spec, or a shading solution lifts the whole-home rating — rather than just modelling the new bit in isolation and hoping for the best.
- NatHERS rating for existing + proposed combined
- Retrofit advice on insulation, glazing, shading
- Before/after star comparison on request
- BASIX alteration/addition certificate (NSW)
Existing Homes Ratings
For green home loans, mandatory disclosure, and informed retrofit.
The NatHERS Existing Homes protocol now allows accredited assessors to rate finished dwellings — unlocking green home loan products, supporting ACT mandatory disclosure, and letting homeowners make retrofit decisions backed by actual thermal data instead of guesswork.
- Certified existing-home NatHERS rating
- Retrofit uplift roadmap (1-star, 2-star incremental upgrades)
- Compatible with major bank green mortgage programs
- ACT mandatory disclosure compliant
Next step
Unsure which one applies?
Send your plans and we'll tell you exactly what the state, council, and NCC require for your specific build. Advice in the same email as the quote.