A real estate listing spotted a few weeks ago has disappeared from the portal where you viewed it. You were interested in the property, you had mentally noted its price, its area, and perhaps even saved the link in your favorites. Finding an old real estate listing online is a common reflex, but effective methods depend on the portal used and the time elapsed since the removal.
Local copies and traces in your browser: the first reflex
Before looking for an external tool, check what your own computer or phone has retained. Three places deserve a quick inspection.
- The browser history keeps track of visited pages for several weeks, sometimes several months. Type the name of the portal (leboncoin, seloger, bienici) in the search bar of the history to filter the results.
- Your real estate alert emails often contain a summary of the listing (price, area, location) and a direct link. Even if the link no longer works, the body of the email retains the main data.
- The favorites or integrated backups on the portals themselves: most sites offer a tracking or favorites list accessible from your user account.
On Le Bon Coin, for example, saved listings remain viewable in your personal space as long as your account is active. To view the followed listings on Le Bon Coin, simply log in and access the section dedicated to saved searches.
These local copies have an obvious limitation: they only work if you have already visited or saved the listing. To find a property you have never opened, you need to turn to third-party tools.
Real estate listing tracking tools: Castorus, Lybox, and web archives
Several services specialize in preserving listings after their removal from portals. Their operation is based on a simple logic: they continuously scan listing sites and keep a copy of each detected listing.
Castorus: browser extension and search engine
Castorus is an extension for Firefox and Chrome that displays the price history of each listing directly on the portal page. When you view a property on SeLoger or Leboncoin, the extension indicates how long the listing has been online and whether the price has changed.
The tool also offers a search engine that aggregates listings from several portals. Recent price drops are highlighted, making it a useful monitoring tool for negotiation.
Lybox: profitability analysis and detection of drops
Lybox takes an investment-oriented approach. The platform detects deletions, modifications, and relistings of properties. It also calculates indicators such as the estimated gross yield or the price per square meter compared to the municipality.
An old listing whose price has dropped is easier to negotiate. This is the main argument of these tools: to make visible what portals do not spontaneously show.
Wayback Machine: the safety net
The Wayback Machine (archive.org) captures snapshots of web pages at irregular intervals. If the listing was on a page indexed at the right time, you can find a complete copy with photos, description, and price. Coverage remains random, but it is a free option that sometimes works where specialized tools have captured nothing.
DVF data: finding the real price of a past transaction
Are you not looking for the listing itself, but the price at which a property was sold? The Demande de Valeur Foncière (DVF) database, published by the administration on data.gouv.fr, lists actual real estate transactions.
DVF indicates the actual sale price, not the price displayed in the listing. This is a crucial distinction. The asking price and the price signed at the notary can differ significantly, especially in a market where negotiations are common.
The database is regularly updated and covers almost the entire territory, except for Alsace, Moselle, and Mayotte. Several visualization portals allow you to consult it on an interactive map without handling raw files.
Prospecting and contact data: what changed in August 2026
Finding an old listing can also aim to recontact the seller. On this point, the legal framework has tightened. Since August 11, 2026, a professional can no longer call an individual without explicit prior consent. This rule directly concerns real estate prospecting, meaning the practice of agents contacting sellers spotted on portals.
Consent must be retained and provable. A phone number visible on an old listing no longer constitutes permission to contact. For an individual simply looking to recontact a seller, the approach remains possible by written message, but unsolicited phone calls expose one to sanctions.
This evolution makes retaining previous exchanges even more useful: if you have already corresponded with the seller via integrated messaging on the portal, this trace constitutes a legitimate contact channel.
Concrete limits of searching for deleted listings
No tool guarantees finding any listing. Castorus and Lybox only cover the portals they scan, and only listings published after the start of their indexing. A listing removed before being detected by these services remains undiscoverable.
Google’s cache, long used as a fallback solution, is no longer available in its historical form. The temporary copies that Google kept are no longer accessible directly from search results.
To increase your chances, the most reliable approach is to act proactively: activate email alerts on several portals, systematically save listings that interest you, and install a tracking extension at the beginning of your search. Finding a listing retrospectively will always be more uncertain than having archived it yourself at the right time.
