Whether or not you need a new mortgage when you move house depends on various factors, including your financial situation, the terms of your existing mortgage, and the specifics of your new home purchase. Here are some scenarios to consider:

1. Porting Your Mortgage: Some mortgage agreements allow borrowers to transfer their existing mortgage to a new property, a process known as mortgage porting. This option allows you to keep your current mortgage terms, including the interest rate and repayment schedule, when you move to a new home. However, porting your mortgage is subject to approval by the lender and may not always be possible or advantageous depending on the terms of your mortgage and the new property.
2. Taking Out a New Mortgage: If you’re unable to port your existing mortgage or if it’s not financially advantageous to do so, you may need to take out a new mortgage when you move house. In this case, you’ll apply for a new mortgage based on the purchase price of the new property, your financial situation, and current market conditions. Taking out a new mortgage allows you to secure financing for your new home while potentially accessing better interest rates or terms.
3. Early Repayment Charges: Before deciding whether to port your existing mortgage or take out a new one, it’s essential to review the terms of your current mortgage agreement. Some lenders impose early repayment charges (ERCs) if you pay off your mortgage before the end of the agreed term. If your existing mortgage has ERCs, it’s important to factor these costs into your decision-making process and assess whether porting the mortgage or taking out a new one is more cost-effective in the long run.
4. Home Equity and Affordability: When moving house, you’ll also need to consider your existing home equity and affordability. If you’ve built up equity in your current property, you may be able to use it as a down payment for your new home or to reduce the amount of financing required for a new mortgage. Additionally, you’ll need to ensure that you can afford the monthly repayments on the new mortgage based on your current income and expenses.

Ultimately, whether you need a new mortgage when you move house depends on your individual circumstances and preferences. It’s advisable to consult with a mortgage advisor or financial expert who can assess your situation and provide personalized guidance on the best course of action for your specific needs.