How long does it take to do a real estate diagnosis?

How long does it take to do a real estate diagnosis?

01 February 2023
How long does it take to do a real estate diagnosis?

In order to carry out a real estate diagnosis, the expertise of a generalist or specialist is necessary. This expert will then examine the condition of the building by taking into account a number of criteria or indicators.

Before a sale, the law obliges the realization of a diagnosis, the place of the good, the nature of the transaction and the date of construction will make it possible to fix the number of diagnosis to be carried out.

A property whose building permit was obtained before January 1, 1949 requires several diagnoses as:

  • The state of natural, mining and technological risks.
  • Checking for the presence of lead.
  • Control of the electrical installation.
  • Diagnosis of the presence of asbestos before sale.
  • Diagnosis of energy performance.

There are no rules regarding the rate framework. The price of the diagnosis is freely fixed by the diagnostician, criteria such as the surface and the location of the property influence the cost of the diagnosis.

The time spent on a real estate diagnosis depends on the type of expertise to be carried out, the size and the technicalities of the property.

Have you asked yourself the question: Is it possible to sell your home without real estate diagnostics?

The 3 steps of a real estate diagnosis

What are the steps in a real estate diagnostic? Paradise Real Estate
  1. The first contact

The first contact: When you request a quote, an appointment is scheduled to explain the estimate, but also in order to provide the necessary documents for the real estate diagnosis.

  1. The beginning of the intervention

The purpose of the intervention is to verify information such as the number of lots in co-ownership or the cadastral reference of the property. Energy bills, work invoices and plans are documents that will be reviewed for the start of the intervention.

  1. The first location

The purpose of this step is to get an overview of all the rooms that make up the property. A description of the property will be made listing all the elements such as walls, windows, floors or ceilings, etc. Then, the various diagnoses will be able to begin, it is necessary to count on average 1 hour to carry out a real diagnosis.

The different real estate diagnostics

  • DPE energy performance diagnosis

The purpose of the energy performance diagnosis is to measure the amount of energy used by the property, as well as the greenhouse gas emissions generated.

The validity of the DPE diagnosis is fixed at 10 years, only professionals can carry out this diagnosis. The rates are not regulated, the intervention has a cost ranging between 100 € and 250 €. On average, it takes about 1 hour of intervention for an average surface of 100 m².

  • Carrez and Boutin measurement

We hear about the Carrez law and the Boutin law when it comes to measuring the surface of a property.

The Carrez law concerns housing located in co-ownership, during a sale the Carrez law surface is a mandatory information. As for the Boutin law surface, it corresponds to the living area of a dwelling. Unlike the Carrez law, garages, cellars, verandas or attics are not taken into account. The Boutin law must therefore be indicated for residential housing.

The diagnosis costs on average between 80 € and 150 €. Calling in a professional means you won't incur civil liability in the event of a dispute, so the length of his or her intervention will depend on the surface area to be diagnosed.

  • Lead diagnosis, CREP

The lead diagnosis or lead exposure risk report is the most time consuming diagnosis. The professional who carries out the intervention must control the presence of lead on all the constituent elements of the property as well as on the external elements which can contain some like for example:

  • The paintings
  • Varnishes
  • Coatings
  • The portal
  • The shutters

In case of presence of lead, the technician will be obliged to transmit a copy of the report to the regional health agency depending on the property. The price of the diagnosis varies between €100 and €250, and the time required to carry it out can range from 30 minutes to 5 hours, depending on the surface area of the property.

  • Asbestos diagnosis, asbestos detection

This diagnosis is a document that indicates the presence or absence of products or materials containing asbestos in a property.

The price for this type of diagnosis varies between 80 € and 140 €, and the duration of the intervention is on average 1 hour 30 minutes.

The duration of validity will depend on the age of the asbestos diagnosis . If the diagnosis was made before April 1, 2013, it must be renewed before the property is put up for sale. If it was carried out from April 1, 2013, the asbestos diagnosis has an unlimited validity.

  • Electrical diagnosis

Mandatory if your property has an electrical installation older than 15 years, the electrical diagnosis allows to check the following elements:

  • Classes of electrical equipment
  • Fuses, circuit breakers and differential devices
  • Switches and disconnectors
  • Earthing and equipotential bonding

This diagnosis provides 87 checkpoints to verify the electrical standards of a property. The duration of the intervention varies between 30 minutes and 2 hours depending on the size of the property. The average cost for the intervention of a professional is between 100 € and 150 €.

It is valid for 3 years if you wish to sell and 6 years if you wish to rent.

  • Gas diagnosis

It allows us to verify the conformity of a gas installation and to highlight the existence of possible safety risks. Only a certified diagnostician can carry out this control, on average 20 to 30 minutes are necessary.

It will then assign one of the following observations:

  • Absence of danger
  • Minor risk
  • Serious and immediate danger

The gas diagnosis has a validity of 3 years for a sale and 6 years for the rent of a property. For this real estate diagnosis, it is necessary to plan between 100 € and 150 €.

  • ERP

The ERP diagnosis or State of risks and pollution is used to list the natural, mining and technological risks related to the land on which the property is located.

This diagnosis covers risks related to :

  • Avalanches
  • Forest fires
  • Nuclear Exposure
  • Seismic and mining risks
  • Industrial accidents

The ERP diagnosis is valid for 6 months. The cost to perform this diagnosis varies between 80 € and 150 €, depending on the type of construction and the location of the property.

The duration of intervention of real estate diagnostics

Each of the diagnoses can take a certain amount of time to complete, so it is difficult to give a precise time to complete a property diagnosis.

For small apartments, they can be completed in just a few hours, while for large apartments or houses it can take several hours.

It is important to specify that the duration of a diagnosis depends on several factors such as the surface area, the age, the general condition and the nature of the property. It is preferable to ask for an estimate from a real estate diagnostician in order to have a more precise estimate.

The time it takes to carry out real estate diagnostics depends on several factors:

  • The size of the dwelling,
  • The number of parts to be inspected,
  • The age of the building,
  • Access to information.

The intervention time also varies according to the number of diagnoses to be carried out. It is highly recommended to consult a professional to establish a more precise estimate of the time needed to complete the real estate diagnosis of your property.

It is important to note that the diagnoses are regulated and only certified and approved professionals can perform them.

Accelerate the real estate diagnostic process

To expedite the real estate diagnostic process, it is advisable to ensure that the necessary information is available and accessible before the diagnostic process begins.

This may include floor plans, electricity and gas certificates, and any other relevant documents.

It is also important to ensure that the diagnostics are performed by a certified and licensed professional to guarantee the quality and reliability of the results.

In addition, an experienced diagnostician will be able to perform the diagnostics quickly and efficiently.

Scheduling a diagnostic date can impact the length of the process, so it is important to arrange a date that works for all parties.

If more than one diagnosis is to be performed, it is preferable to schedule the different diagnoses at the same time to avoid unnecessary travel and additional costs.

Finally, effective communication between all parties involved can also help to speed up the property diagnostic process.

It is important to note that real estate diagnostics are governed by regulations and that it is important to respect the standards and rules in place to ensure the safety and quality of the diagnostics.

During the realization of a real estate diagnosis, different criteria such as the size and age of the building, the number of rooms to be inspected and the access to the necessary information, will intervene to fix the duration of intervention of a professional.

The rates as well as the duration of validity vary according to the type of diagnosis you wish to carry out and the type of property you wish to have diagnosed. It is strongly advised to consult a professional to establish a more precise estimate of the time required to carry out the real estate diagnosis of your property.


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