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How to Remortgage a Co-Owned Buy-to-Let Property

Learn how to navigate remortgaging a co-owned buy-to-let property, especially when one owner lives abroad.

By David Sampson
19 May 2026
3 min read
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TL;DR

  • Co-owners of a buy-to-let property may face unique challenges when remortgaging.
  • it’s important to determine if the mortgage is classified as buy-to-let or residential.

Remortgaging a co-owned property that is being let can be complex, especially when one owner lives abroad. Understanding the implications of buy-to-let mortgages and tax considerations is essential for all parties involved.

What Should You Consider When Remortgaging?

When remortgaging a co-owned property, the first step is to identify whether the mortgage is classified as a buy-to-let or a residential mortgage. If your co-owner lives in the property and it serves as their main residence, lenders may still treat it as a residential mortgage. This distinction is important because it affects the terms and conditions of the remortgage.

How Does Living Abroad Impact Your Remortgage Options?

If you are a non-resident, like the co-owner living in Canada, your options may be limited. UK lenders typically conduct credit checks based on UK credit scoring, which may not fully reflect your financial situation if you have been living abroad. It’s advisable to consult with a mortgage broker who understands the nuances of remortgaging for non-residents.

What Tax Implications Should You Be Aware Of?

For co-owners considering a buy-to-let mortgage, it’s important to note that payments made by the co-owner’s partner covering your share of the mortgage may be viewed as rental income by HMRC. As a non-UK resident, you could fall under the Non-Resident Landlord Scheme, which has specific tax obligations. Consulting a UK tax adviser is highly recommended to navigate these complexities.

What This Means for Co-Owners and Landlords

For co-owners and landlords, understanding the classification of your mortgage is vital to ensure you meet lender requirements and tax obligations. If the property is primarily a residential home for one co-owner, remortgaging may be simpler. However, if it is classified as buy-to-let, this could lead to additional financial and tax considerations. Being well-informed can help you make strategic decisions regarding your property investments.

Frequently Asked Questions

Can I remortgage a property if I live abroad?

Yes, but your options may be limited. UK lenders often require UK credit checks, which may not accurately reflect your financial status if you are living overseas.

What are the tax implications of renting out my share of the property?

If your co-owner’s partner pays rent that covers your mortgage share, HMRC may consider this rental income. You should consult a UK tax adviser to understand your obligations under the Non-Resident Landlord Scheme.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.

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How to Remortgage a Co-Owned Buy-to-Let Property | Mortgage118