Are you planning to sell a town house, an old house or an apartment in Soissons? If the dwelling was built before the 1 January 1949The risk assessment for lead exposure (CEP) is one of the documents to be collected to inform the purchaser.
This file explains how to choose a certified diagnostician, what CREP actually measures, when it needs to be renewed, and how to react when lead-containing coatings are identified.
Practical guide · Rules as at 1 November 2026 · Real estate sales in France
Research and measurement of lead contained in paints and other coatings, with an assessment of their conservation status.
The date of construction, not the appearance of the building, determines the obligation.
The criterion is precise: the dwelling must have been built before 1 January 1949. This obligation applies to the houses and housing apartments concerned, regardless of their neighbourhood.
Soissons has old housing, particularly in the city centre and in several historic residential areas. However, the ancient character of a façade is not sufficient to prove a date of construction or the presence of lead: the documents of the property must be verified and, where prescribed, the CREP must be ordered.
If it was built before 1 January 1949, the CEP must be communicated to the purchaser in the technical diagnostic file.
The owner seller must provide a statement adapted to his housing. Information on common parts should be examined separately.
CREP is not imposed on sale solely because of the presence of old paintings. However, ad hoc suspicion may justify appropriate expertise.
The CREP obligation also exists for dwellings built before 1949, but the duration of the report is not the same as in the case of sale.
The findings are part of the Technical Diagnostic Record (TDD)attached to the promise of sale or, in the absence of a promise, to the authentic act. It is not possible to infer the absence of lead from a recent renovation: a new paint can cover an old layer containing lead.
The professional involved must be certified for lead fieldinsured in professional and independent civil liability. A firm offering DPE or asbestos does not necessarily have all the required certifications for each stakeholder.
Check the official directory, identify the person who will make the statement and check the validity of his or her certification « lead ».
Indicate the address, the nature of the dwelling, its date of construction, the number of rooms, the outbuildings and any appendices of common use.
Ask if the price includes travel, visit to all accessible rooms, measurements, report preparation, and delivery time.
Check the identity of the property and operator, controlled surfaces or units, inspection limits, results, recommendations and regulatory instructions.
CREP prices are not set by a national regulatory tariff. They vary according to the size and complexity of the housing, the number of rooms and the organisation of the intervention. A relevant comparison relates to the actual mission, not just an amount announced.
Our local directory lists professionals with a documented location in the city. It is a starting point; before ordering, check certification « lead » and the assurance of the diagnosticist who will actually intervene.
See the Soissons directoryThe official register allows to check the certificates of the professional:
The findings relate to the lead concentration in coatings and their conservation status. The diagnosticist examines, among other things, the old paintings of walls, doors, windows, huisseries, shutters and other elements within the perimeter of the control. Annexes for common use may also be concerned.
The professional uses a portable measuring device by fluorescence X. This technology is used to assess the concentration of lead in coatings, including when more recent layers cover them. The CEP is not a mere visual examination and should not be established remotely.
The diagnosticist searches the relevant parts and elements to identify the diagnostic units and their apparent condition.
It measures the concentration of lead, notes degraded units and possible degradation factors of the building.
The CREP summarizes the results, method and limitations of the intervention. A notice on the risks of lead should be attached.
The seller shall submit the report to the notary and attach it to the technical diagnostic file intended for the purchaser.
The answer depends the outcome of the report. For a sale, the absence of lead above the regulatory threshold must be distinguished from concentrations that reach or exceed this threshold. The benchmark is 1 mg/cm2.
CREP does not detect lead-containing coatings or indicates concentrations below the regulatory threshold. In principle, the report may be reused for a subsequent sale, provided that it concerns the housing concerned.
CREP highlights lead-containing coatings at the level requiring renewal. In order to sell, the finding must then have been made less than one year on the required date.
This diagram is only used to present a threshold concept. Only the ratio of a certified professional allows to know the actual concentrations and the measures to be taken.
For a rentalwhere the concentration exceeds the threshold for renewal, the validity period shall be less than six years. This period of six years should therefore not be applied to a sale.
If you already have an old CREP, send it to the notary and the diagnostic officer to verify its exact scope, date, controlled perimeter and the possible need to do so.
No, the presence of lead does not automatically make selling impossible. However, it must be made known to the purchaser. It is essential to distinguish an intact coating containing lead from a degraded paint that can expose occupants to dust or scales.
When the finding reveals degraded coatings containing lead above the regulatory threshold, obligations of work and protection of occupants may apply. The owner must act in accordance with the conclusions of the report and the provisions in force; the sale must not be used to conceal identified risks.
Lead is not synonymous with immediate exposure. The diagnosis shall specify the elements concerned and their preservation; the precautions remain appropriate to the situation.
Scraping, dust or other degradation may increase the risk. Protection measures and any work required must be reviewed.
Sanding, stripping or demolition can disperse hazardous dust. The preparation of the site is the responsibility of a specific risk assessment and competent professionals.
The report must be fully communicated. The price and timing of the sale are discussed on the basis of verified information, without minimizing the result.
Where the diagnoser identifies a risk of infant saturism, special rules for alerting and transmitting the report to the health authority may apply. They should not be confused with the usual documentary obligations of a sale.
For an apartment sold in an old building in Soissons, it is useful to separate the obligations related to the Private lot and information on common areas. The seller does not alone order the diagnosis of the entire condominium.
The seller shall cause the CREP corresponding to his apartment to be established or produced when it falls under the obligation relating to a construction prior to 1949. The report is included in the sales file.
The trustee may provide information or the existing CEP concerning the common parts. Some of the work that could significantly alter the coatings of these spaces requires a prior CREP.
Floors, stairs, guardrails, corridors and woodwork can raise different questions depending on their status and date. Prior to the sale of an old apartment, the owner has an interest in gathering his private diagnoses, useful documents of the trustee and, where applicable, information on the works voted.
CREP does not provide information on the private area of the lot. For this question, see the file on measurement law Carrez à Soissons.
Yes, in principle, since it was built before 1 January 1949. A consistent statement should be provided and its validity period checked according to the result.
No. The renovation alone does not remove the regulatory obligation related to the date of construction. The old layers of paint may remain under more recent coatings.
Lead does not automatically block a transaction. It is necessary to inform the purchaser, to examine the condition of the coatings and to meet any protection or work requirements that may be applicable.
CREP is dedicated to building coverings. The assessment of old pipes or water quality should not be confused with this diagnosis.
No. Where no surface exceeds the regulatory threshold, the finding may be of unlimited validity. The one-year rule concerns findings showing concentrations requiring this renewal for sale.
No, his certification and independence count more than the address of the headquarters. However, our directory identifies professionals based in Soissons; then check the competence « lead » the chosen speaker.
It is part of the technical diagnostic file annexed to the promise of sale or, where there is no such document, to the authentic act. Better to get it before the first serious discussions with the buyer.
The CEP concerns a specific category of housing. Other diagnoses depend in particular on the age of the building, the facilities, the condominium and its geographical location. You can consult the nine additional files below.
The links of unpublished files use the slugs prepared for your library. They will become available when articles are posted online. The URL of the energy audit file remains to be confirmed.
To identify a firm located in Soissons, go to thelocal directory of real estate diagnosticians in Soissons (02200).
General information as at 1 November 2026. The diagnostic and notary must verify the rules applicable to the accommodation and transaction.
