Moving House: A Step-by-Step Guide to a Home Moving Mortgage

10 Feb 2026 | By Gus Quigley

When you're selling your current property to buy another, you'll need what's known as a moving home mortgage. Unlike a first-time buyer mortgage, this is designed for existing homeowners moving up or down the property ladder. 

What is a moving home mortgage?

When you're selling your current property to buy another, you'll need what's known as a moving home mortgage. Unlike a first-time buyer mortgage, this is designed for existing homeowners moving up or down the property ladder.

You have two main routes:

  • porting your existing mortgage
  • arranging a brand-new deal

Getting this decision right can save you thousands. Before deciding, it's worth understanding how mortgages work, and our team at Avalon Mortgages is here to help you choose the most suitable option.

Should you port your mortgage?

Porting means transferring your current mortgage deal to your new property, keeping the same interest rate and lender. It's worth considering if you're partway through a competitive fixed-rate period.

Your lender will reassess your affordability from scratch, and if you're borrowing more for a larger home, any additional lending typically comes at a different rate. Not every mortgage is portable, so check your documents first.

Taking out a new mortgage

A fresh mortgage gives you access to current market rates, which can be a real advantage if rates have fallen since you originally borrowed.

The trade-off? If you're still inside a fixed-rate period, you may face early repayment charges for leaving early. These are typically calculated as a percentage of your outstanding balance and can be significant. Our experts will help you work out if you are better off staying with your existing lender or changing to a new one. You'll also go through a full application again, covering:

  • affordability checks
  • credit searches
  • a valuation

Key Considerations When Getting a Moving Home Mortgage

Moving home involves more than simply choosing a mortgage product. Planning ahead, making the most of your existing equity and keeping your sale and purchase on track can all make the process smoother and help you secure the right deal.

Start the process early
Getting your mortgage offer in place before exchange is essential. Talk to us before you find your property so you can find out whether or not to port your mortgage. We can also help you have your agreement in principle ready, so there’s no stress when your offer gets accepted, and no estate agents pressuring you.

Make the most of your equity
One real advantage of already owning a home is the equity you've accumulated. Put simply, that's the difference between your property's current value and your remaining mortgage balance. A larger equity-funded deposit means access to lower loan-to-value rates, which usually come with better terms.

Plan the timing carefully
Coordinating a sale and purchase simultaneously takes careful planning. Both transactions usually complete on the same day, which means your mortgage offer needs to be confirmed before you exchange contracts. Delays on either side can have knock-on consequences, so staying organised matters. Again, it’s best to talk to us before you find a house so getting the offer is easier and results in a stress-free mortgage process thereafter.

Why work with a local broker?

Whether you're porting, switching, or simply trying to make sense of your options, having the right advice from the start makes a difference. At Avalon Mortgages, we work with homeowners across Hemel Hempstead, St. Albans, and Watford, bringing detailed knowledge of local market conditions and lender requirements.

Planning a move? Speak to one of our experienced advisers so we can help you create a clear plan that aligns your moving timeline with the right mortgage strategy, allowing you to move forward with confidence.

Gus Quigley
Gus Quigley

Gus is the Director of Avalon Mortgages, which he founded to help clients achieve their property goals with confidence. With over two decades of experience in finance since 2001, he brings trusted expertise and a personal approach to every client interaction.