This site is for use by mortgage intermediaries and other professionals only
Newcastle IS
Call:    0345 602 2338


Welcome to the Newcastle Building Society Intermediary Services Secure Login.

In here you will be able to:

  • Complete the Affordability Calculator.
  • Submit new Decision in Principle requests and manage existing ones.
  • Proceed to Full Application Submission once a Decision in Principle has been Accepted.
  • View your personal details.
  • View your Administrators and their access rights.
  • Change your password and memorable details.

You must be registered with us to be able to log in. If you have not already registered, please complete our online registration form.

If you have queries regarding the login area, or any other part of our service, please call our Intermediary Services Team on 0345 602 2338 (lines are open 8am to 6pm Monday to Friday).

Our login area is compatible with browsers IE11, Edge, Chrome, Firefox and Safari. You will need to ensure your operating system has Windows 7 or above, IOS 7 or above or macOS.

Newcastle Building Society registered office 1 Cobalt Park Way, Wallsend, NE28 9EJ.
Tel: 0345 602 2338. e-mail:
Newcastle Building Society is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority.
Newcastle Building Society is registered on the Financial Services Register under the firm reference number 156058.
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