SUSTY prepares BASIX Certificates, NatHERS Ratings and Whole of Home assessments for homes across NSW — clear reports, accurate modelling, no jargon.
SUSTY is a NSW-based energy rating consultancy built around one idea: sustainability compliance shouldn't be confusing, slow, or padded with services you don't need.
Every certificate is prepared by a HERA-accredited assessor using AAO-recognised software, checked against council and NCC requirements, and handed back with a plain-English summary of what the numbers actually mean for your build.
No bundled extras, no generic templates — just the three assessments homes in NSW actually require, done right the first time.
Whether you're lodging a DA, satisfying a complying development pathway, or need a full thermal model, SUSTY covers the assessment types that matter — nothing you don't need.
The mandatory NSW sustainability assessment for most residential development applications — covering water, thermal comfort and energy targets, lodged ready for council or a private certifier.
DA & CDC Ready →Star-rating thermal modelling of your home's design — orientation, glazing, insulation and shading assessed to show how comfortable and efficient the build will actually be to live in.
0–10 Star Modelling →The full-picture assessment combining your BASIX energy budget with appliances, hot water and any on-site power generation — for a complete household energy performance profile.
Full Energy Budget →A straight four-step path from your drawings to a lodgement-ready certificate — no back-and-forth unless we need something from you.
Send architectural plans, site details and specifications — PDF is fine, no special formatting needed.
Your design is entered into accredited NatHERS/BASIX software and checked against current NCC and council requirements.
You receive the official certificate plus a plain-English breakdown of your rating and any compliance notes.
Documents are formatted for direct lodgement with council, a private certifier, or your building surveyor.
HERA-accredited and current on NCC and NSW BASIX requirements every assessment.
Most certificates returned within 48 hours of receiving complete plans.
Every certificate comes with a summary that actually explains what it means for your build.
You deal with the assessor directly — no call centre, no account managers.
Get in touch with your plans and address — a quote and estimated turnaround will come back the same day.