A property valuation is a crucial step to successfully sell at the right price. However, its validity is not unlimited and depends on several factors such as market trends or changes made to your property. In this article, discover how long a house valuation remains valid, the factors that influence it, special cases, and our advice for obtaining a reliable valuation with Optimhome.
What is the validity period of a property valuation?
How does a house valuation work?
To estimate a house, an Optimhome real estate advisor first gathers essential information about your property: surface area, number of rooms, location, general condition, and equipment. They then carry out an on-site visit to assess the specific characteristics and the property’s environment. This analysis is completed with a comparative study of similar properties recently sold in your area. Finally, they provide you with a complete and justified valuation report based on current local and national market data.
How long is a valuation valid?
An accurate valuation is generally valid for between 3 and 6 months. This timeframe corresponds to the pace at which real estate prices evolve. No legal text sets an official duration, but beyond this period, market fluctuations may make your valuation outdated. In a context of high volatility, it is recommended to request a more frequent revaluation to ensure that your selling price remains competitive and realistic.
What factors influence the validity of a valuation?
How does the real estate market affect validity?
An increase or decrease in prices, changes in supply and demand, or interest rate trends directly impact the value of your property. In 2025, the French market is experiencing a gradual recovery with approximately 803,000 transactions over one year at the end of June, although trends remain very local. In a tight market where prices rise quickly, your valuation may lose relevance in just a few weeks. Conversely, in an area where recent transactions show stabilization, the validity period is longer. That is why it is essential to monitor developments in your area and regularly consult updated local market data.
When do renovation works require a new valuation?
Major changes made to your property necessarily require a new valuation. This includes energy renovation work, adding a veranda, an extension, or a change in energy performance rating. These changes affect both the perceived and actual value of your property. An energy renovation that improves a property from rating G to rating C can generate significant added value, while a downgraded energy rating may lead to a price reduction. The same applies to major structural or aesthetic works that change the surface area, brightness, or room layout. In all these cases, a new valuation is necessary to accurately reflect the new value of your property assets.
Signs that it is time to request a new valuation:
You have carried out renovation or extension work.
More than 6 months have passed since the last valuation.
The local market has experienced notable changes (price increase or decrease).
New regulations affect your property (rental bans, new energy standards).
What are the special cases: inheritance and valuation without selling?
Who can value a house and at what price for an inheritance?
In the context of an inheritance, a property valuation plays an essential role. It is used to establish the tax declaration with the authorities, facilitate the fair distribution between heirs, and determine the market value of the property at the date of death. This value is used as the basis for calculating inheritance tax. The notary can carry out this valuation based on their knowledge of the local market and actual sales data. A real estate agent can also provide a complete and justified valuation based on recent transactions and the property’s characteristics. The important thing is that the valuation accurately reflects the value at the time of death, not the initial purchase price or an expected value.
Can you have your house valued without selling it?
You can absolutely request a valuation without any obligation to sell. A valuation may also be required for calculating property tax, or to serve as collateral for a loan with banks and financial institutions. Starting with an online valuation on the Optimhome website allows you to quickly obtain an indicative price range. You can then contact an Optimhome real estate advisor for an in-depth market analysis, who will provide you with a detailed valuation report, free of charge and without commitment.
Why have your house valued by an Optimhome real estate agent?
To obtain a reliable property valuation, start with a free online valuation on the Optimhome website. An Optimhome real estate advisor will then visit the property to carry out a detailed valuation. This in-depth market analysis is based on current local and national market data. Your advisor will provide you with a complete, justified, and fully personalized valuation report. The expertise of a professional guarantees the right price to sell under the best conditions. This valuation is free and without commitment, allowing you to move forward confidently with your selling project.
Frequently asked questions about house valuation
What is the legal value of a property valuation?
A property valuation does not have binding legal value for the parties. Unlike a judicial appraisal carried out by a certified expert, it is an indicative opinion intended to guide the seller in their marketing strategy. In the event of a dispute or official procedure (inheritance, divorce, asset division), a formal appraisal will be required to obtain a legally binding document.
How much does a house valuation by a real estate agency cost?
Most real estate agents, including Optimhome, offer valuations free of charge. This service is part of their support services and is usually provided within the framework of a potential sales mandate. Only a notarial appraisal or one carried out by a certified expert may be paid, with fees generally ranging between 200 and 300 euros depending on the complexity of the property.
Can you challenge a poor valuation carried out by a notary?
Yes, it is possible to challenge a valuation that you consider incorrect. You can request a second opinion from another real estate professional to compare valuations. In case of persistent disagreement, you can refer the matter to the Chamber of Notaries for free mediation, or consult a lawyer specialized in real estate law if significant financial damage is identified.
Is there a property valuation simulator on gouv.fr?
Yes, the tax administration provides several public valuation tools. The Patrim service, accessible via impots.gouv.fr in your personal tax account, and the Demande de Valeurs Foncières (DVF) tool allow you to consult recent property transactions. These tools provide an approximate valuation based on past sales but do not replace the expertise of a professional who analyzes the specific characteristics of your property.
How can you lower a property valuation?
You do not lower a valuation as such, but certain elements may justify a downward revision. Defects identified during the visit, poor overall condition, an old construction year, or an unfavorable energy performance diagnosis may influence the value. The valuation reflects market reality and the objective characteristics of the property at the time of the assessment.
Author :
Fabrice DOBROWOLSKI - Optimhome Network Development Director
Optimhome offers you personalized support for your real estate project. Benefit from all my advice, based on several years of experience, to ensure the success of your project.
