Helping people own their home whatever their circumstances
Our Joint Mortgage Sole Proprietor (JMSP) proposition is available up to 80% LTV and can support a wide range of borrower's circumstances including first time buyers, home movers resulting from a change in personal circumstances or later life lending (with support from children).
These products can increase borrowing capacity by adding a family member* onto the mortgage and taking their income into consideration for affordability. Importantly, this family member isn't named on the deed of the property.
Key features
- Competitive 2 and 5 year products available
- Free standard valuation on properties up to £500k
- No product fees and £500 cashback on these products
- 10% overpayment allowed per annum
- Available on loans from £25,000 and up to a maximum of £1,000,000
- Affordability will be calculated using combined income from the occupying and non-occupying borrower
- Maximum age is 80 years at the end of the mortgage term based on the oldest applicant
*A family member is defined as a close family relative, normally a parent or step parent
Further information can be found on our website.
Contact us
We will be delighted to discuss any new enquiries or any other queries you might have about existing applications. Call our Intermediary Support team on 0345 602 2338 or email us at intermediary.lending@newcastle.co.uk. Alternatively, you can contact your dedicated Business Development Manager.

Call for Nominations – What Mortgage Awards!
Nominations are now open for the 2021 What Mortgage Awards. With your support, we have won Best Regional Building Society for the last four years running. We would love your support, once again, to make this 5 years in a row; please nominate here.