Privacy policy
Last updated: 15 September 2026
This policy explains how CÉCILE GUILLO LUXURY REAL ESTATE ("the Agency", "we"), 9 rue Chabanais, 75002 Paris, France, acting as data controller, collects, uses and protects your personal data when you use www.cecileguillo.com or our services. It applies under the EU General Data Protection Regulation (GDPR) and the French Data Protection Act.
1. Data we collect
Data you give us: identity and contact details (name, email, phone, address), information about your project (property to sell or to find, budget, size, timeline), the content of your messages.
Data collected automatically: audience-measurement data (pages viewed, time spent, device and browser type, anonymised IP address), only if you have accepted audience-measurement cookies (see section 7).
Transaction data, once a mandate or a sale is under way: identity documents, supporting documents, correspondence, contractual documents.
2. Purposes and legal bases
Answering your requests (contact, valuation, viewing, property search, application) and providing our real-estate services — legal basis: pre-contractual measures or performance of a contract.
Managing mandates, sales and professional obligations (French Hoguet law, anti-money-laundering rules, accounting) — legal basis: our legal obligations.
Sending you information about our properties and services — legal basis: your consent, which you may withdraw at any time.
Measuring and improving the site's audience — legal basis: your consent (cookies).
Keeping proof of your consents — legal basis: our legal obligation to be able to demonstrate consent.
3. Recipients and processors
Your data is processed by the Agency and, solely for the purposes above, by our service providers: Vercel Inc. (website hosting, USA), Resend Inc. (delivery of emails sent from the forms, USA), Apimo (property management software, France), Google LLC (audience measurement, USA, only if you accepted it), and, for transactions, notaires, surveyors and other necessary parties.
Transfers to the United States rely on the EU–US Data Privacy Framework, to which these providers are certified, or on the European Commission's standard contractual clauses.
We never sell or rent your data. It may be disclosed to authorities where the law requires it.
4. Retention periods
Contact and valuation requests that do not lead to a mandate: 3 years after our last exchange.
Mandate and transaction files: for the duration of the relationship, then 5 years (civil limitation period), or 10 years for accounting records.
Audience-measurement data: 13 months at most.
Proof of your cookie choices: 13 months.
After these periods, data is deleted or anonymised.
5. Security
We apply appropriate technical and organisational measures: encrypted connections (HTTPS), restricted access to data, certified hosting providers, and no storage of IP addresses in clear text in our records.
6. Your rights
You have the right to access, rectify, erase, restrict and object to the processing of your data, the right to data portability, the right to withdraw your consent at any time, and the right to set instructions about your data after your death.
To exercise them, write to contact@cecileguillo.com or to CÉCILE GUILLO LUXURY REAL ESTATE, 9 rue Chabanais, 75002 Paris, France. We reply within one month. Proof of identity may be requested if there is any doubt about your identity.
If you believe your rights are not respected, you may lodge a complaint with the French supervisory authority, the CNIL (www.cnil.fr, 3 place de Fontenoy, 75007 Paris), or with the authority of your own country.
7. Cookies and trackers
What is a cookie? A small file or piece of information stored in your browser when you visit a website. Under Article 82 of the French Data Protection Act and the CNIL's guidelines, non-essential trackers are only set with your agreement.
Strictly necessary trackers (no consent needed): the record of your cookie choice ("cg-cookies", browser local storage, 6 months). No other technical cookie is used; the site has no advertising, no tracking social-media buttons and no embedded videos.
Trackers subject to your consent: Google Analytics 4 audience measurement, provided by Google LLC (USA). Cookies "_ga" and "_ga_*", lifetime 13 months, purpose: visit statistics (pages viewed, source, device). IP addresses are anonymised and the data is not used for advertising. Until you accept, none of these cookies is set and no data is sent to Google.
Your choice: on your first visit, a banner lets you accept or refuse these cookies, with equal ease. Refusing has no effect on your access to the site. Your choice is kept for 6 months, after which the banner is shown again.
Withdrawing or changing your consent: at any time, via the "Change my choice" button below, or by clearing the site data in your browser settings. You can also install the Google Analytics opt-out add-on (tools.google.com/dlpage/gaoptout).
Proof of consent: every decision (acceptance or refusal) is recorded with its date, reference, the version of this text and a technical fingerprint, and kept for 13 months so that your choice can be demonstrated. Your decision's reference is displayed below.
8. Changes
We may update this policy, in particular if the site or the regulations change. The applicable version is the one published on this page, with its update date. If anything changes regarding cookies, your consent will be requested again.
9. Contact
For any question about your data: CÉCILE GUILLO LUXURY REAL ESTATE, 9 rue Chabanais, 75002 Paris, France — contact@cecileguillo.com.