Before any renovation work in the house, have a audit of the existing is an important first step. Indeed, an independent diagnosis makes it possible to check the state of health of the house. Here are the main advantages of a work audit in an individual house.
What is a renovation work audit?
Un works audit is carried out by a competent or independent agent who checks and controls the condition of various equipment in the house. Electricity, gas, roofing, carpentry, plumbing, heating, energy consumption, etc., the audit assesses the current state of the house, identifies problems that may exist, identifies defects, damage, and areas requiring urgent repairs.
Real estate diagnostics a tool for renovation work?
During the'buying a house, the seller must give you a file of real estate diagnostics. These diagnoses, even if they are not complete, are important for the buyer who thus has a first estimate of work to undertake in his home.
This tool can thus be used outside of the sale, by a home owner who wants a working basis to identify the work that he must carry out as a priority.
What are the different real estate diagnostics?
- the energy performance (EPD)
– the risk of exposure to lead
– the presence or absence of asbestos
- L 'condition of the electrical installation if she is over 15 years old
– the condition of the gas installation if it is more than 15 years old
– the state of natural and technological risks. (natural, mining, technological, seismic, radon, etc.)
– the presence or absence of termites
– the state of the non-collective sanitation installation for individual houses
– since June 1, 2020, noise must also be assessed for properties located in noise zones around aerodromes
– make a Energetic audience if the accommodation is classified F or G on the ECD
– The risk of dry rot (fungus) in the construction of the house. This risk of dry rot concerns geographical areas identified by a decree.
Why carry out an energy audit of your home?
A new house built under the aegis of the RE2020, is very efficient and consumes very little energy for heating and hot water production. It is therefore classified A on theenergy label. Older homes can significantly reduce their energy bills.
What are the tools for the home energy audit?
The DPE: energy performance diagnosis
The DPE is a measurement tool that evaluates the energy consumption of a home and its greenhouse gas emissions. To do this, he checks the condition of the windows (single or double glazing), the year of construction, the thickness of the insulation, the type of heating (electric, gas, fuel, etc.) and domestic hot water production… It then classifies the house with a label ranging from “A” (high-performance housing) to “G” (particularly energy-intensive housing).
Renovation work: energy audit, a complete diagnosis
Since April 1, 2023, the most energy-intensive housing, classified F or G on the DPE, must be subject to a energetic audience in case of sale. This detailed inventory identifies heat loss from housing and proposes work to have a efficient housing, healthy and comfortable.
This obligation will gradually be extended to homes classified E (January 2025) and classified D (2034).
Thermal study in renovation
Made by a thermal design office,thermal study is generally carried out in new construction to ensure that the work will achieve the energy performance required by regulations RE2020. In renovation, it helps to find the best technical solutions to achieve the required requirements and ensure energy savings. Ventilation, waterproofing, isolation, heating system, etc., the house is considered as a whole, which guarantees long-term results.
Is a thermal study obligatory during renovation?
THEthermal study is mandatory in the event of adding an extension to check that this new part complies with the energy standards imposed by the RE2020. It ensures that the extension will comply with RE2020 standards, will consume little energy to ensure summer comfort and winter comfort, and will emit few greenhouse gases.
To go further, read the article “ What energy standard for a house extension ».
What is a renovation work audit for?
The Audit serves to plan the work renovation, to save money, to have a more aesthetic, durable and efficient result.
An audit to plan the renovation work
The information provided by the audit makes it possible to prioritize interventions according to their urgency and the budget. Thus, once a precise budget has been established, you can define objectives such as energy savings, improving comfort, aesthetics, bringing up to standards, enlarging… Knowledge of the house and work to be carried out over the long term thus makes it possible to create a work schedule over time to be as efficient as possible and optimize the budget.
To go further, see the article: “ How to plan your home renovation? ».
Save on long-term work
Having an idea of the work to be done in a home allows you to save money. For example, we can group together all the work that requires scaffolding (roofing, renovation of facades, installation of solar panels…), because the cost is not negligible. We can also make the plumbing andElectricity supply before making finishing work (paints, floor and wall coverings, etc.).
Likewise, building a house extension is an opportunity to revisit the layout of the rooms in the house, its decoration, etc. You might as well anticipate for optimal results.
Aim for energy performance
Undertaking energy saving work cannot be improvised. Redoing the insulation of the house therefore has consequences on the power of a heat pump, for example. There is therefore no need to change your boiler before insulation work or to undertake the construction of a house extension. In order to avoid redoing the work twice, you must first and foremost size your equipment (ventilation, heating, plumbing).
Anticipate breakdowns
It's better to change a boiler before it breaks down. Anticipating future work avoids acting in a hurry. An aging boiler is also an opportunity to question its energy consumption and possible renovation work.
Prevent risks
Certain equipment may represent potential risks to the safety of occupants. Outdated electrical installations, damaged structure, aging gas boiler, etc., maintenance and regular check of these installations helps to avoid accidents. Detection of problems related to the indoor air quality, humidity, or the presence of dangerous substances (asbestos, lead)..., a house audit can also be an opportunity to preserve the health of the occupants.
A works audit to enhance your property
A well-conducted audit also makes it possible to calculate the return on investment. We can thus analyze the potential savings and the time required to make new equipment profitable.
Then a consistent renovation can increase the value of the house. Housing renovated to modern standards is more attractive on the real estate market.
To go further, read the article “ How to increase the value of your home with an extension/renovation? ».
The audit before renovation work is an essential step which allows you to maximize the benefits of the interventions. It provides an accurate and detailed overview of the condition of the building, facilitates informed decision-making, optimizes investments and ensures compliance with safety and energy efficiency standards. Hiring a professional to carry out this audit is therefore a highly recommended approach.
