How to analyze the "Energy" section?

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Introduction

In this article, you will learn how to use the Energy section in your Property Advisor tool.

The Energy section allows you to assess a property’s energy performance as well as the potential renovation costs required to improve its efficiency. This information is useful to anticipate future expenses, identify opportunities to increase the property’s value, and meet new environmental requirements.

Table of contents

1. How does our energy performance prediction model work?
2. How can I estimate the Energy rating of my property?

3. How should I interpret the results of my valuation and the renovation costs?

4. How accurate is our model?

1. How does our energy performance prediction model work?

In France, the estimation of the Energy Performance Certificate (EPC or DPE in French: Diagnostic de Performance Énergétique) is based on a machine learning model trained using selected features from the French DPE database, in order to predict the consumption and emissions of a property according to its characteristics.

This database contains approximately 7.3 million EPCs and is provided by the French Ministry of Ecology through ADEME (Agence de la Transition Écologique).

Since July 2021, the EPC in France has been based on the 3CL method.

2. How can I estimate the Energy rating of my property?

If all the energy-related characteristics of a property were not completed during the file creation, you will directly obtain an estimate of the renovation costs in this tab.

However, these will not be detailed: you will only receive a range of average renovation costs required to move up each energy label.

Example: If my property is rated D, the available cost ranges will cover upgrades from D to C, from D to B, and from D to A.

• Step 1:
  Click Edit property details (Modifier les détails du bien) to fill in the missing characteristics.

• Step 2:
  Then, select an option for each of the ten characteristics, and click Save.

Energy-related property characteristics:

• Number of windows

• Number of exterior walls

• Age of thermal insulation

• Heating system (individual / collective)

• Energy source for heating (fuel oil, gas, wood, etc.)

• Type of windows (single, double, triple glazing)

• Hot water system (individual / collective)

• Energy source for hot water (fuel oil, gas, wood, etc.)

• Ventilation system (natural, single flow, or double flow)

• Floor level of the property

3. How should I interpret the results of my valuation and the renovation costs?

First, there is an estimation of the EPC on the left and an estimation of CO₂ emissions on the right, both rated from A to G.

Below, renovation scenarios are suggested based on the information you previously entered.

You can modify the property’s characteristics to observe how they impact the proposed renovation costs.

It is possible to filter by different scenarios:

• Optimized / reduced costs: corresponds to the least expensive scenario

• Optimized energy efficiency: scenario proposing works to reach the lowest possible energy label

• Optimized CO₂ emissions: scenario proposing works that have the greatest impact on reducing the property’s final CO₂ emissions

For each scenario, details of the different energy renovation works are suggested, along with the potential impact these works would have on the property’s selling price.

These represent average costs observed on the French market and are not professional quotes.

4. How accurate is our model?

Our model achieves an exact prediction accuracy of 44.2% for houses and 49.5% for apartments. Allowing for a margin of error of just one label, accuracy increases to 90.9% for houses and 93.8% for apartments.