Home Energy Rating Preparation
A home energy rating is easier to review when the right property information is available at the start.
For an existing home, the assessment is based on the dwelling as it currently stands. That means property details, available plans, photos, renovation history and information about installed systems can all help the assessor understand the home more clearly.
You do not need to have perfect records before making an enquiry. But preparing the information you do have can make the quote and assessment pathway easier to confirm.
Quick Answer
For a home energy rating, the most useful starting information includes the property address, dwelling type, approximate age, available plans, renovation history, photos, insulation details, heating and cooling systems, hot water, solar, batteries and known comfort issues.
Original plans are helpful, but they are not always available for existing homes. If you do not have complete drawings, you can still begin the enquiry with the information you do have. The assessor can then confirm what else may be needed.
The goal is not to make the homeowner do the assessment before the assessment begins. The goal is to provide enough information for the right pathway, quote and data collection process to be reviewed.
A home energy rating is not based only on a quick visual impression. It depends on the physical features of the dwelling, the installed systems and the way the home is likely to perform in its climate.
For existing homes, the information can be less tidy than it is for a new build. Plans may be missing. Renovations may have changed the home. Insulation may have been added without clear records. Heating, cooling, hot water and solar systems may have been replaced over time.
The more clearly this information is provided, the easier it is to confirm the right existing home energy rating pathway and understand what further data collection may be needed.
The first information to prepare is simple but important. It helps identify the property, dwelling type and likely assessment context.
Useful property details include:
The reason for the rating matters. A homeowner planning upgrades may need a different review pathway from a property owner preparing for disclosure, sale, lease or program participation.
Plans are helpful because they can show the dwelling layout, room sizes, orientation, extensions and construction details. They can also make it easier to understand parts of the home that are difficult to inspect visually.
Useful documents may include:
Many existing homes do not have complete original plans. That is common. If plans are missing, the enquiry can still begin, but the assessor may need to rely more on site data, photos, observations and the assessment rules. For more detail, see Can you get a rating without original plans?
Photos do not replace a proper assessment, but they can help clarify the property before a quote or pathway review is confirmed.
Helpful photos may include:
Do not enter unsafe areas to take photos. If roof, ceiling or subfloor spaces are not safely accessible, this can be noted instead.
Renovation history can change how an existing home performs. An older dwelling may have new windows, added insulation, a renovated roof, upgraded air conditioning or an extension built to a different standard from the original home.
Useful renovation information may include:
Even informal information can be useful. If you know that the ceiling was insulated around five years ago, or that the rear extension was built in the 1990s, include that in the enquiry.
Insulation has a major influence on thermal performance, but it is often one of the least clearly documented parts of an existing home.
If known, provide information about:
It is normal not to know all of this. The assessor can advise what needs to be observed, recorded or treated as uncertain within the assessment process.
A home energy rating can consider more than the building fabric. Installed systems may also affect the home’s performance, running costs and upgrade opportunities.
Useful system information includes:
If you are unsure what system you have, photos are often enough to begin the review. The details can be clarified during the assessment process.
Comfort issues can help point the assessment toward real performance concerns. They do not replace modelling or data collection, but they provide useful context.
Useful comfort information may include:
This type of information helps connect the technical assessment to the lived experience of the home.
Most homeowners do not have every detail available at the start. This is especially true for older homes, inherited properties, investment properties or homes that have been renovated by previous owners.
Missing information does not automatically prevent an enquiry. It simply means the assessor needs to confirm what can be determined from available documents, photos, site data, observations and the assessment rules.
Start with what you have. The assessment pathway can then be reviewed and any critical gaps can be identified before the assessment proceeds.
Before requesting a quote, it is helpful to prepare a simple folder of available information.
This does not need to be perfect. A clear starting point is usually enough for the assessment pathway to be reviewed.
For a home energy rating, useful information includes the property address, dwelling type, available plans, renovation history, insulation details, heating and cooling systems, hot water, solar, batteries, photos and known comfort issues.
Original plans are helpful but not always essential. Many existing homes do not have complete documentation. The assessment process can often work with available drawings, site data, photos, observations and reasonable assumptions where permitted.
Useful photos may include external elevations, windows, shading, heating and cooling systems, hot water systems, solar equipment, insulation access points, roof or subfloor areas where safely visible, and rooms with known comfort issues.
Insulation information is useful, but many homeowners do not know the full details. If known, provide insulation type, location and upgrade history. If not known, the assessor may identify what can be observed or what needs to be treated as uncertain.
Provide details for heating and cooling systems, hot water, solar PV, batteries, major fixed appliances and any recent energy upgrades. Photos of model numbers or system labels can be helpful.
Yes. You can usually begin with the property address, available plans or photos, and the reason for the rating. The assessor can then confirm what additional information is needed before the assessment proceeds.
Quote Preparation
Prepare your available plans, photos and property details before requesting a quote. Certified Energy can then review the likely assessment pathway and confirm what else may be needed.