NatHERS Assessments
Accredited thermal performance modelling with a focus on achieving the minimum 7-star requirement through practical, buildable solutions.
Click here to Explore NatHERS ↗NATHERS · BASIX · WHOLE OF HOME
Compliance is the goal.
How you get there matters.
Clear, cost-effective energy rating advice for builders who need certainty before construction begins.
25+years of
industry experience
industry experience
NSW · ACT · VIC · QLD
ENERGY RATINGS, DONE DIFFERENTLY
We see more than
a star rating.
We see the design decisions, specification impacts and construction costs behind every result.
ERA works alongside builders and design teams to find practical pathways to compliance—without unnecessary upgrades, delays or surprises.
Meet the team →WHAT WE DO
Technical expertise.
Practical outcomes.
Assessment support from early design through to revisions and certifications.
We provide complete NatHERS and BASIX assessments, including Whole of Home, for residential projects of every scale.
Project HomesCustom BuildsRenovations & AdditionsMulti-Dwelling DevelopmentsUnits & ApartmentsDisplay Homes
BASIX Certificates
Complete NSW sustainability assessments covering water, energy, thermal comfort and materials for DA and CDC submissions.
Click here to Explore BASIX ↗Whole of Home
Clear analysis of fixed appliances, heating and cooling, hot water, lighting and onsite energy so the whole home target is understood.
Click here to Explore Whole of Home ↗WHY BUILDERS CHOOSE ERA
The assessment fee is only one part of the cost.
Our focus is protecting costs across the entire build.
Cost-effective pathways
We test the variables that matter—orientation, glazing, insulation and shading—to avoid unnecessary specification upgrades.
Builder knowledge
We understand repeat designs, construction systems and the commercial reality of making changes across a housing portfolio.
Direct accountability
You have access to experienced assessors who can explain results, review options and resolve issues at the source.
Consistent delivery
Reliable communication, clear reporting and a structured workflow help keep projects moving within the expected timeframe.
✓
REAL PROJECT OUTCOME
“A better assessment pathway can save far more than it costs.”
ERA has helped clients avoid significant window upgrade costs by reassessing the design and finding a compliant 7-star solution.
HOW WE WORK
Clear from plans
to certification.
One accountable team, a transparent process and advice you can act on.
- 01
Send your plans
We review drawings, specifications and the information needed to begin.
- 02
Assess and optimise
We assess the home’s performance, test practical design and specification options, and recommend the most cost-effective pathway to achieve the required result.
- 03
Certify with confidence
Final documentation is prepared for your project submission.
BE READY TO STARTWhat documents do we need?+
Clear information helps us model the home accurately, reduce back-and-forth and keep the assessed outcome aligned with what will actually be built.
Still designing? Send what you have. We can begin with preliminary information and confirm the final details later.
Architectural plans
Site plan, floor plans, elevations and sections show the layout, orientation, levels, roof form and building geometry.
Windows and doors
Schedules and glazing details confirm sizes, frame types and performance—the elements that can strongly influence the rating.
Construction specifications
Wall, floor, ceiling and roof details, insulation values, roof colour and floor coverings tell us how the thermal envelope will be built.
Shading and site details
Eaves, awnings, balconies and relevant surrounding obstructions help us model how sun and shade affect the home.
25+YEARS
EXPERIENCE
EXPERIENCE
ABOUT ERA
Experience that
works with you.
Energy Ratings Australia is a family-owned consultancy built on technical experience, strong builder relationships and dependable service.
Led by founder and senior assessor Fadi Sweis, with Diala Sweis managing operations and client relationships, ERA brings together a dedicated team of assessors who combine hands-on technical expertise with responsive, personal support.
Our team works across project homes, custom builds, renovations and additions, display homes, repeat designs, units, apartments and multi-dwelling developments throughout NSW, ACT, VIC and QLD.
Fadi SweisFounder · Senior AssessorDiala SweisOperations · Client Relationships
FOLLOW ERA ON INSTAGRAM
Ideas, insights
and industry updates.
See our latest work and updates on Instagram @era.services ↗
REQUEST A QUOTE
Tell us about
your project.
Share a few project details and we’ll review what’s required. For general enquiries, you can also email us directly.
SERVICINGNSW · ACT · VIC · QLD