COOKIES POLICY



Christie’s International Real Estate Cookies Policy (the “Policy”)


This Policy applies to the websites www.christiesrealestate.com and luxurydefined.christiesrealestate.com (the "Sites") which are run by the Christie’s group of companies (“Christie’s”), further details about which can be found at www.christies.com/about-us/corporate-entities (“we” or “us”).

This Policy seeks to explain how we use cookies and other similar technologies to collect information about the way website users visit the Sites. We use cookies across these Sites to improve its performance and therefore your experience of it. The core role of cookies is to enhance and enable usability or site processes. Cookies also ensure that the Sites are working efficiently and that they perform certain functions properly. Christie’s International Real Estate uses cookies for a number of purposes which is further explained below.

By accessing the Sites, you are agreeing to the terms of this Policy and, save to the extent that you adjust your browser settings to prevent their use, consenting to our use of cookies as explained below. Once you have given consent to our use of cookies, our cookies banner will not be displayed to you again, unless and until we change our cookies and/or this Policy. Please note that we may change the cookies we use and/or otherwise update this Policy from time to time. If we do so, we will flag this in our cookies banner so you are aware there are changes before you proceed to browse the Sites more widely.

The privacy and security of your personal information is very important to us. If you would like learn more about how we protect your privacy, please see our Privacy Policy.

Cookies – what they are, how they work and why we use them


A cookie is a simple text file that is stored on your computer or mobile device by a website's server and only that server will be able to retrieve or read the contents of that cookie. Each cookie is unique to your web browser. It will contain some anonymous information such as a unique identifier and the site name and some digits and numbers. It allows a website to remember things like your preferences or to maintain state across various webpages.

They take up virtually no space and are there so that our Sites can tell that you are the same website user as you move from page to page. These files are either stored in the memory of your computer or other device such as mobile phones or tablet devices which you use to access the Sites.

Cookies help us provide you with a better website experience by enabling us to monitor which pages you find useful and which you do not, they also help us to resolve problems if things go wrong and to understand how users use the Sites.

Session or permanent


Cookies can be “session” based (they only last as long as your visit to the Site), or permanent (they remain between your visits to the Sites, so the Sites recognise your device the next time you visit). Our sites use permanent cookies. We can then build up a better and more useful picture of how repeat visitors use our Sites and what they like and dislike.

Specific information we may collect and why


The cookies which Christie’s International Real Estate drop on your device allow us to collect details of your visits to our Sites including, but not limited to, traffic data, web logs or other communication data and the resources you access. The information you provide to us will be used for processing transactions but may also be used for internal data processing, such as compiling statistical information about your interests and the use of our Sites. As a service to you, we may also use this information to customise the content we offer on the Sites.

We may collect information personal to you about your computer, including your IP address, operating system and browser type when you visit the Sites. Your IP address is used to help identify and gather statistical or demographic information about our customers generally, for example a UK based user who may prefer English language content, and to allow for tailored advertising. We also use this information for internal system administration to help diagnose problems with our servers, to administer our website and the customer or user experience.

How is this information used?


Christie’s International Real Estate will collect, record, store and use the collected information worldwide for clearly specified purposes including but not limited to :

  • providing you with information, which we believe would interest you in a way that is targeted and relevant;

  • where possible, combining the information with your other personal data which we may hold from to time as explained in our privacy policy; and

  • ensuring that our Sites are presented in the most effective manner for you and your computer.

Tailored advertising


We also want to use our cookies to help us to better tailor information we provide to you, to try to best suit your preferences. To do so, we may use agents or contractors to help us to serve the cookies and to capture and analyse the information obtained from them on our behalf but where we do so it will be on the basis that these agents/contractors are required to keep the information confidential and secure, and will not use the information for any other purpose than to carry out the services they are performing for Christie’s International Real Estate. Our cookies do not collect information about what other websites you visit or what you browse there.

Unless you are logged in to your online Christie’s International Real Estate account when our cookies are dropped, Christie’s International Real Estate cannot identify which customer is browsing the Site from cookie information. Christie’s International Real Estate may be able identify a Site user as a specific customer where cookies information contains, or is combined with, other details, for example your IP address and/or email address and/or user account details.

We therefore use our cookies to learn what a browser of our Sites seems to like, from what pages the user visits on our Site, for example looking at homes in a specific region. We can then arrange to serve you relevant ads about our sales items, hopefully tailored to what interests you, such as an addition to our homes in that region.

The ads we think you will like most about our sales items will be displayed when you are visiting third party websites online using the same device you used to browse the Site.

We make arrangements with third party advertising network providers (“AdServers”) to show you these ads when you visit certain websites. To do this, we have to let the AdServers know you are the user we know as user No. 1, so when you visit the third party website they show adverts on, they can show you our ads and the ones we hope are of most interest. We do not share any additional details about you with the AdServers, or the third party website providers, to do this.

In addition, Christie’s International Real Estate does not arrange for any AdServers, or third party website providers, to drop any additional cookies on their behalf. We track customer use on our Site only. If you choose to visit a third party website, it will have its own privacy and cookies policies, which may be different to ours and may mean other cookies are dropped on your device. We recommend that you read the privacy and cookies policies on such third party websites.

Overview of types of cookies used


The following categories of cookies are used on the Site:

Strictly necessary cookies


  • Strictly necessary cookies are essential in order for us to enable you to move around the Site and use its features. They do not gather information about you that could be used for marketing purposes. These cookies are “first party” cookies and originate from our own servers.

Name Cookie Purpose
Microsoft .NET ASP.NET_SessionId General purpose platform session cookie, used by sites written with Miscrosoft .NET based technologies. Usually used to maintain an anonymised user session by the server.
OneTrust OptanonConsent One Trust Opt in cookie
OneTrust OptanonAlertBoxClosed One Trust Opt in cookie

Performance/analytical cookies


  • Performance cookies collect information about how you use our Site and help us to understand what interests our users. It helps to improve the Site by identifying any problems that you may encounter during your visit, by learning how you entered the Site and which pages you visited. They do not gather information about you that could be used for marketing purposes and do not provide any information to advertisers with the purpose of targeting you with advertisements on other websites.

Name Cookie Purpose
Google Analytics __utma This is one of the four main cookies set by the Google Analytics service which enables website owners to track visitor behaviour and measure site performance. This cookie lasts for 2 years by default and distinguishes between users and sessions. It it used to calculate new and returning visitor statistics. The cookie is updated every time data is sent to Google Analytics. The lifespan of the cookie can be customised by website owners.
Google Analytics __utmz This is one of the four main cookies set by the Google Analytics service which enables website owners to track visitor behaviour measure of site performance. This cookie identifies the source of traffic to the site - so Google Analytics can tell site owners where visitors came from when arriving on the site. The cookie has a life span of 6 months and is updated every time data is sent to Google Analytics.
Google Analytics _ga This cookie name is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.
Google Analytics __hssc This cookie name is associated with websites built on the HubSpot platform. It is reported by them as being used for website analytics.
Google Analytics __utmt_a1 This is a pattern type cookie set by Google Analytics. It appears to be a variation of the __utmt cookie which is used to limit the amount of data recorded by Google on high traffic volume websites.
Google Analytics __utmb This is one of the four main cookies set by the Google Analytics service which enables website owners to track visitor behaviour and measure site performance. This cookie determines new sessions and visits and expires after 30 minutes. The cookie is updated every time data is sent to Google Analytics. Any activity by a user within the 30 minute life span will count as a single visit, even if the user leaves and then returns to the site. A return after 30 minutes will count as a new visit, but a returning visitor.
Google Analytics __hstc This cookie name is associated with websites built on the HubSpot platform. It is reported by them as being used for website analytics.
Google Analytics _gat This cookie name is associated with Google Universal Analytics, according to documentation it is used to throttle the request rate - limiting the collection of data on high traffic sites. It expires after 10 minutes.
Google Analytics __utmc This is one of the four main cookies set by the Google Analytics service which enables website owners to track visitor behaviour and measure site performance. It is not used in most sites but is set to enable interoperability with the older version of Google Analytics code known as Urchin. In this older versions this was used in combination with the __utmb cookie to identify new sessions/visits for returning visitors.
When used by Google Analytics this is always a Session cookie which is destroyed when the user closes their browser. Where it is seen as a Persistent cookie it is therefore likely to be a different technology setting the cookie.
Google Analytics __utmt This cookie is set by Google Analytics. According to their documentation it is used to throttle the request rate for the service - limiting the collection of data on high traffic sites. It expires after 10 minutes
Google Analytics __hssrc This cookie name is associated with websites built on the HubSpot platform. It is reported by them as being used for website analytics.
Google Analytics _gid This cookie name is asssociated with Google Universal Analytics. This appears to be a new cookie and as of Spring 2017 no information is available from Google. It appears to store and update a unique value for each page visited.
.listhub.net lhac This cookie is set by Listhub for purposes of tracking user behavior for Listhub clients

Functional cookies


  • Functional cookies support the use of our Site and enable enhanced and personalised features. Some of these cookies are necessary to enable you to move around the Site without encountering problems and to use certain functionality. They will not save any personal information, nor gather information that could be used for marketing purposes.

Name Cookie Purpose
.christiesrealestate.com hubspotutk This cookie name is associated with websites built on the HubSpot platform. HubSpot report that its purpose is user authentication. As a persistent rather than a session cookie it cannot be classified as Strictly Necessary.
Gabriels Technology Solutions ListingsSearchPage GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions SalesLastGoodSearchSEOQuery GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions listingsPageViewCount GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions LanguagePreference GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchListingTotal GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions DetailShowMiniResult GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchReferrerId GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchDetailShowMiniResult GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions PseudoRandomSort GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ResultsPerPage GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchReferrerQueryType GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions RentalsLastGoodSearchSEOQuery GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions listingdetailsPageViewCount GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchDetailIndex GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchSEOQuery GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchQueryType GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchPerPage GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchIsDefined GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions PersistSearchCriteria GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchPageTotal GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Gabriels Technology Solutions ListingsSearchExtraSearchParams GTS Real Estate Platform functionality cookie. Used to enhance functionality on the GTS Platform
Hubspot __cfduid Used to apply or enhance settings on Hubspot.com platform items
.vimeo.com vuid This domain is owned by Vimeo. The main business activity is: Video Hosting/Sharing

Targeting cookies


  • Targeting cookies are persistent cookies which will remain on your computer or other device until you delete them manually, or your browser deletes them based on the duration period contained within the cookie file. See the section on tailored advertising for more information on how these are used.


Name Cookie Purpose
.facebook.com datr This domain is owned by Facebook, which is the world's largest social networking service. As a third party host provider, it mostly collects data on the interests of users via widgets such as the 'Like' button found on many websites. This is used to serve targeted advertising to its users when logged into its services. In 2014 it also started serving up behaviourally targeted advertising on other websites, similar to most dedicated online marketing companies. This cookie identifies the browser connecting to Facebook. It is not directly tied to individual Facebook the user. Facebook reports that it is used to help with security and suspicious login activity, especially around detection of bots trying to access the service. Facebook also say the behavioural profile associated with each datr cookie is deleted after 10 days. This cookie is also read via Like and other Facebook buttons and tags placed on many different websites.
.youtube.com SID YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites. This cookie is used by Google in combination with HSID to verify a Google user account and most recent login time.
.youtube.com HSID YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites. Used by Google in combination with SID to verify Google user account and most recent login time
.facebook.com fr This domain is owned by Facebook, which is the world's largest social networking service. As a third party host provider, it mostly collects data on the interests of users via widgets such as the 'Like' button found on many websites. This is used to serve targeted advertising to its users when logged into its services. In 2014 it also started serving up behaviourally targeted advertising on other websites, similar to most dedicated online marketing companies. Contains browser and user unique ID combinaton, used for targeted advertising.
.twitter.com auth_token This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
.youtube.com demographics YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites. Most likely used for demographic profiling and targeting for advertising
.google.com APISID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear.
.google.com SSID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear.
.facebook.com lu This domain is owned by Facebook, which is the world's largest social networking service. As a third party host provider, it mostly collects data on the interests of users via widgets such as the 'Like' button found on many websites. This is used to serve targeted advertising to its users when logged into its services. In 2014 it also started serving up behaviourally targeted advertising on other websites, similar to most dedicated online marketing companies. Used to manage the login process, remembers user on return visit if they choose to stay logged in.
.youtube.com VISITOR_INFO1_LIVE YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites. This cookie is used as a unique identifier to track viewing of videos
.youtube.com PREF YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites. This is a common Google cookie, used across several of their services. Stores user preference, can be used to personalise ads on google searches
.pinterest.com __utma This domain is owned by Pinterest. The main business activity is: Social Content Sharing platform
.youtube.com APISID YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites.
cdn.syndication.twimg.com lang This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
.google.com NID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear.
.google.com PREF This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear. This is a common Google cookie, used across several of their services. Stores user preference and can be used to personalise ads on google searches
.twitter.com twll This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
syndication.twitter.com lang This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting.
.twitter.com secure_session This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
.twitter.com guest_id This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
.youtube.com SSID YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites.
.twitter.com __utma This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting.
.youtube.com LOGIN_INFO YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites.
.google.com SID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear. This cookie is used by Google in combination with HSID to verify a Google user account and most recent login time.
.google.com SAPISID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear.
.youtube.com YSC YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites.
.twitter.com remember_checked This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting. Twitter does not currently provide information on the use of specific cookies.
.twitter.com remember_checked_on This domain is owned by Twitter. The main business activity is: Social Networking Services. Where twitter acts as a third party host, it collects data through a range of plug-ins and integrations, that is primarily used for tracking and targeting.
.doubleclick.net id This domain is owned by Doubleclick (Google). The main business activity is: Doubleclick is Googles real time bidding advertising exchange
.pinterest.com _pinterest_sess This domain is owned by Pinterest. The main business activity is: Social Content Sharing platform
.google.com HSID This domain is owned by Google Inc. Although Google is primarily known as a search engine, the company provides a diverse range of products and services. Its main source of revenue however is advertising. Google tracks users extensively both through its own products and sites, and the numerous technologies embedded into many millions of websites around the world. It uses the data gathered from most of these services to profile the interests of web users and sell advertising space to organisations based on such interest profiles as well as aligning adverts to the content on the pages where its customer's adverts appear. Used by Google in combination with SID to verify Google user account and most recent login time
.youtube.com SAPISID YouTube is a Google owned platform for hosting and sharing videos. YouTube collects user data through videos embedded in websites, which is aggregated with profile data from other Google services in order to display targeted advertising to web visitors across a broad range of their own and other websites.
.quantserve.com mc This domain is owned by Quantcast. The main business activity is: Market and Audience Segmentation, Targeted advertising services
.pinterest.com __utmv This domain is owned by Pinterest. The main business activity is: Social Content Sharing platform
Quantcast __qca This is a cookie usually associated with Quantcast, a digital advertising company. They provide website rankings, and the data they collect is also used for audience segmentation and targeted advertising.

Targeting or Advertising: We sometimes partner with third parties to deliver more relevant advertisements and to compile web statistics. These third parties may use cookies, web beacons and other tracking technology to monitor your visits to both Christie’s and other websites. They monitor your online behaviour and identify website usage, helping advertisers show you advertising and content that is more relevant to you. Some examples of what Targeting and Advertising Cookies do:

  • Provide advertisers with information about your visit to our websites so they can show you advertising that is relevant to you;

  • Limit the number of times you see an advertisement; and

  • Help measure the effectiveness of an advertising campaign.

Don't worry - none of these cookies store personally identifiable information like your name and address and we only use trusted advertising partners. Just so you know, these third parties will have their own privacy policies and they may be different from ours.


Controlling Cookies and changing your mind


You can control the use and placing of any cookies on your computer through the settings you select on your internet browser.

You can change your [browser settings] to accept or refuse all cookies, choose which cookies you want or don’t want, or ask to be notified when a cookie is set. You can use the help feature in your browser to see how.

However, if you use your browser settings to block all cookies you may not be able to access all or parts of our site, or you may experience reduced functionality when accessing certain services.

Useful information about controlling cookies can be found at http://www.aboutcookies.org/ or at http://www.allaboutcookies.org.