Privacy Policy

Last updated: 17 March 2026

1. Data Controller

Brane Keystone (CoC 88236374), established in Utrecht, the Netherlands, is responsible for the processing of personal data as described in this privacy policy.

Contact details:
Email: info.branetech@gmail.com

2. What data do we process?

Keystone processes the following categories of personal data:

  • Account data: name, email address, phone number
  • Company data: company name, Chamber of Commerce number, address (for real estate agencies and professionals)
  • Appraisal data: property details, valuations, reference properties, reports
  • Property data: addresses, cadastral data, year of construction, surface area
  • Transaction data: purchase agreements, status updates, notary details
  • Mortgage data: loan amounts, NHG assessments, bank products
  • Inspection data: building survey reports, photos, checklists
  • Technical data: IP address, browser type, timestamps

3. Why do we use your data?

We process your personal data for the following purposes:

  • Managing your account and access to Keystone
  • Performing appraisal services and valuations
  • Guiding real estate transactions
  • Performing mortgage calculations and NHG assessments
  • Generating and archiving reports
  • Supporting building inspections
  • Communication about your use of the service
  • Improving our services
  • Complying with legal obligations

4. Legal basis

We process your personal data based on:

  • Contract: processing is necessary for the performance of our agreement with you
  • Legal obligation: for example, administrative retention obligations (7 years for appraisal data)
  • Legitimate interest: improving our services and security

5. Retention periods

We do not retain your personal data longer than necessary:

  • Account data: up to 6 months after account deletion
  • Appraisal data: 7 years after last appraisal (legal retention obligation)
  • Transaction data: 7 years after transaction completion (legal retention obligation)
  • Mortgage data: 7 years after last calculation
  • Inspection data: 7 years after inspection
  • Technical logs: 90 days

6. Sharing with third parties

We only share your personal data with third parties when necessary:

  • AWS (Amazon Web Services): hosting in region eu-central-1 (Frankfurt)
  • Resend: for sending emails
  • Land Registry (Kadaster): for retrieving property data (where applicable)
  • NHG: for mortgage assessments (where applicable)
  • Banks: for mortgage comparison (where applicable)

All external parties are contractually obligated to protect your data in accordance with the GDPR.

7. Cookies

This marketing site (branekeystone.com) uses no cookies. The application (app.branekeystone.com) only uses functional cookies that are necessary for the operation of the platform. No consent is required for these essential cookies.

8. Your rights

You have the following rights regarding your personal data:

  • Right of access: you can request which data we process about you
  • Right to rectification: you can have incorrect data corrected
  • Right to erasure: you can request deletion of your data
  • Right to restriction: you can request restriction of processing
  • Right to data portability: you can receive your data in a structured format
  • Right to object: you can object to certain processing activities

To exercise these rights, please contact us at info.branetech@gmail.com. We will respond to your request within 4 weeks.

9. Security

We take the protection of your data seriously and implement appropriate technical and organizational measures:

  • TLS encryption (HTTPS) for all communication
  • AES-256 encryption for data at rest
  • Multi-factor authentication (MFA) for account security
  • Regular security audits and updates
  • Access control following the principle of least privilege
  • Automated encrypted backups

10. Complaints

If you have a complaint about the processing of your personal data, please first contact us at info.branetech@gmail.com. You also have the right to file a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens, autoriteitpersoonsgegevens.nl).

11. Changes

We may update this privacy policy from time to time. The most current version is always available on this page. We will notify you of significant changes.

12. Contact

For questions about this privacy policy or about the processing of your personal data, please contact us:

Email: info.branetech@gmail.com
Company: Brane Keystone
CoC (KvK): 88236374
Address: Rigastraat 76, 3541ED Utrecht, Netherlands