Why energy planning matters during renovations
Renovation
projects are one of the best opportunities to improve how a home
performs — but energy efficiency is often considered too late. Decisions
around layouts, finishes or extensions are sometimes made without
understanding how they affect heat loss, ventilation or future upgrade
options.
A
Home Energy Assessment helps bring energy performance
into the conversation early, when changes are easier and more
cost-effective to make.
Before you finalise renovation plans
Booking
a
Home Energy Assessment before plans are locked in allows you to
understand how your home performs and where improvements would have the
biggest impact.
At this stage, the assessment can help identify:- Where heat is currently being lost
- Whether insulation upgrades should be included
- How renovations might affect ventilation or airtightness
- Opportunities to future-proof the home
This can prevent design choices that limit energy upgrades later.
Before opening up walls, roofs or floors
Renovations
often involve opening parts of the building fabric. This is an ideal
time to consider insulation or airtightness improvements, as access is
already available.
A
Home Energy Assessment can highlight which
areas are worth addressing while works are underway, helping avoid
situations where finished spaces need to be reopened in the future.
Before upgrading heating systems
Many
renovations include changes to heating or hot water systems. However,
upgrading heating before understanding insulation and heat loss can lead
to poor performance.
An assessment helps ensure heating
decisions are made in the right order, based on how well the home can
retain heat once renovations are complete.
During phased or long-term renovations
Not all renovations happen at once. Some projects are spread over months or years, depending on budget and priorities.
A
Home Energy Assessment supports phased planning by:- Setting a clear starting point
- Helping prioritise upgrades over time
- Reducing reliance on guesswork
- Supporting better long-term decisions
This is especially useful if you want to improve comfort gradually without rushing.
After renovation plans change
Renovation plans often evolve. Extensions are added, layouts change, or budgets shift. If plans change significantly, revisiting energy performance can help ensure new decisions still make sense.
In some cases, an updated assessment may be appropriate to reflect changes to the home.
A Home Energy Assessment doesn’t replace an architect or builder — it complements them. It focuses on how the home performs as a system, helping you understand the energy impact of renovation decisions.
This reduces the risk of missed opportunities and helps ensure renovations improve comfort, efficiency and long-term performance.
What happens next
After your
Home Energy Assessment, you receive a clear report explaining how your home performs and which improvements may suit your renovation plans.
You can use this information to inform discussions with designers or contractors, adjust plans if needed, and move forward knowing energy efficiency has been considered properly — not added as an afterthought.
Booking the assessment at the right time helps ensure your renovation delivers lasting benefits, not just a visual upgrade.