Potentially, yes, until your finances are formally settled.
In England and Wales, the divorce itself does not automatically end financial claims between spouses. If you do not have a court-approved financial order, including a clean break where appropriate, claims can remain open even after the divorce is finalised.
That matters because a property you buy after separation can still be taken into account in a financial settlement, depending on the overall facts, the needs of both parties, and the children’s arrangements.
What usually happens in practice
If you buy a new home using your own income and savings after separation, you would normally argue that it should not be treated the same way as an asset built up during the marriage.
But the court’s starting point is fairness, and where there are children, the needs of housing and stability can carry significant weight. So while your ex-wife may not have an automatic “right” to half of a new property, it is not as simple as “she has no claim”. The safer framing is that it depends on the financial order you end up with.
The joint mortgage you already have is the bigger immediate issue
From a lender’s perspective, your existing joint mortgage remains a joint commitment until it is repaid or one party is formally removed. Divorce does not change that.
When you apply for a new mortgage, lenders will factor in two things.
They will look at any maintenance payments you make, because these are ongoing commitments. They will also take a view on the existing mortgage, either as a monthly commitment or, with some lenders, more conservatively as a full ongoing liability. That can reduce what you can borrow.
How to reduce the risk before you buy
If you want clarity and protection, the cleanest route is to get the financial arrangements agreed and made legally binding through a consent order, ideally with clean break wording where appropriate. This is the step that closes off future financial claims.
It is also sensible to update your will as part of separation and divorce planning, because separation does not automatically tidy up inheritance intentions, and you want your wishes to be clear.
Next step
If you are planning to buy before the divorce finances are settled, speak to a family solicitor first, because the timing can materially change the risk.
