Why similar homes don’t perform the same
It’s common to assume that homes on the same street will perform similarly. In reality, energy performance depends on many hidden details. A
Home Energy Assessment looks beyond appearances to understand how heat moves through your specific home.
Even small differences can add up to very different results.
Construction type and build details
Homes may look alike but be built years apart or to different standards. Wall construction, roof structure, floor type and materials all affect heat loss. Changes made over time — such as extensions or renovations — also influence performance.
These construction details form the baseline for your assessment.
Insulation levels and quality
Insulation varies more than most people expect. One home may have upgraded
attic insulation, while another has thin, uneven or compressed coverage. Wall insulation can also differ greatly depending on the age and structure of the property.
The assessment identifies what insulation is present, how effective it is, and where improvements would have the biggest impact.
How the home is lived in
A
Home Energy Assessment
reflects real-life use. Heating patterns, hot water demand and
ventilation habits all help build an accurate picture of performance.
The goal is not comparison or judgement — it’s understanding how your home works day to day.
What the assessment is designed to do
A
Home Energy Assessment
is not about matching another home’s result. It is about giving you
clear, tailored guidance based on your home’s condition today.
This is why two similar homes can receive:- Different BER results
- Different upgrade priorities
- Different improvement pathways
All of this helps remove guesswork.
What happens next
After your assessment, you receive a clear report explaining:
- How your home is performing
- Where energy is being lost
- Which upgrades make sense now or later
There is no obligation to proceed. The assessment gives you clarity first, so you can make informed decisions when the time is right.
Understanding why results differ helps set realistic expectations — and ensures any future upgrades are based on what your home actually needs