Privacy statement

GriDD is part of the Witteveen+Bos group (hereinafter Witteveen+Bos). Witteveen+Bos is responsible for the processing of personal data as shown in this privacy statement.

Who are we?

We are GriDD (part of Witteveen+Bos) and we respect your privacy. We process personal data of website visitors in order to provide them with the best possible service. In this privacy statement we explain why and how we process personal data. If you have any questions about how we handle your personal data, please feel free to contact us. Our contact information is provided below:

Contact details

Witteveen+Bos (attn. GriDD)
Leeuwenbrug 8
7411 TJ Deventer

Postal address:
Postbus 233
7400 AE Deventer

E-mail address:
Telephone number: +31 570 69 79 11

GriDD is a trade name of Witteveen+Bos Raadgevende ingenieurs B.V. Wherever GriDD is mentioned, it can also be read as Witteveen+Bos.

Personal data that we process

GriDD processes your personal data because you use our services and/or because you provide this data to us yourself.

Below you will find an overview of the personal data that we process:

  • First and last name
  • Address data
  • Phone number
  • E-mail address
  • Internet browser and device type
  • Other personal data that you actively provide, for example by creating a profile on this website, in correspondence and by telephone
  • Cookies (you can read more about cookies in our cookie policy)

Special and/or sensitive personal data that we process

Our website and/or service does not intend to collect data about website visitors who are younger than 16 years old. Unless they have parental or guardian permission. However, we cannot check whether a visitor is older than 16. We therefore advise parents to be involved in the online activities of their children, in order to prevent data about children being collected without parental consent. If you are convinced that we have collected personal data about a minor without this permission, please contact us via and we will delete this information.

For what purpose and on what basis we process personal data

GriDD processes your personal data for the following purposes:

  • Handling your payment
  • To be able to call or e-mail you if this is necessary to be able to carry out our services
  • Sending our newsletter
  • Sending (automatic) emails when you download something from our site
  • Offer you the option to create an account
  • To deliver goods and services to you
  • GriDD also processes personal data if we are legally obliged to do so, such as data that we need for our tax return.

Automated decision making

GriDD does not make decisions based on automated processing on matters that can have (significant) consequences for people. This relates to decisions taken by computer programs or systems, without involving a person (for example an employee of GriDD).

How long we keep personal data

GriDD does not store your personal data longer than is strictly necessary to realize the purposes for which your data is collected. We use a retention period of 7 years for personal data, to comply with the legal business retention obligation.

Sharing personal data with third parties

GriDD uses third-party service providers to provide you with a good service. We use Email Marketing & CRM software (Brevo). When you fill in a contact form on our website, your personal data will be stored there. When you register for our newsletter, your data will also be stored in Brevo.

Cookies we use

GriDD collects cookies that are necessary for the technical operation of the website and to increase your ease of use. In addition to functional and preference cookies, we also use analytical cookies and third-party cookies. Analytical cookies allow us to analyze the use of the website so that we can measure and improve the performance of our website. Third-party cookies are used to track visitors when they visit different websites.

You can opt out of cookies by setting your internet browser so that it no longer stores cookies. In addition, you can also delete all information that was previously stored via the settings of your browser.

View our cookie policy for more information.

View, modify or delete data

You have the right to view, correct or delete your personal data. In addition, you have the right to withdraw your consent to the data processing or to object to the processing of your personal data by GriDD consultancy B.V. and you have the right to data portability. This means that you can submit a request to us to send the personal data we have about you in a computer file to you or the, by you requested, organization.

You can send a request for access, correction, deletion, data transfer of your personal data or request for withdrawal of your consent or objection to the processing of your personal data to

To ensure that the request for access has been made by you, we ask you to send a copy of your proof of identity with the request. Make your passport photo, MRZ (machine readable zone, the strip with numbers at the bottom of the passport), passport number and Citizen Service Number (BSN) black in this copy. This is to protect your privacy. We will respond to your request as soon as possible, but within four weeks.

GriDD would you also like to point out that you have the option to file a complaint with the national supervisory authority, the Dutch Data Protection Authority. You can do that via the following link: (in Dutch)

How we protect personal data

GriDD (part of the Witteveen+Bos group) takes the protection of your data seriously and takes appropriate measures to prevent misuse, loss, unauthorized access, unwanted disclosure and unauthorized modification. If you feel that your data is not properly secured or there are indications of misuse, please contact