Selling a House During a Separation: Options, Agreements and Pitfalls

When you separate and jointly own a property, you will sooner or later face the same question: what do we do with the house during the separation? Selling the house during a separation is one of the three classic scenarios, alongside a buy-out by one partner and keeping the property temporarily in joint ownership. The family home is often the largest shared asset, carrying both a strong emotional weight and a complex administrative and financial reality. In this guide we walk through your options step by step, explain how the sale works in practice and highlight what to watch out for to avoid conflict and financial loss.

1. The three basic options during a separation

When you separate - whether you were married, legally cohabiting or living together informally - there are broadly three possible solutions for the shared home:

• Option 1: sell the house during the separation.
  You sell to a third party, pay off the mortgage and divide the remaining proceeds according to each partner's ownership share.
• Option 2: buy-out.
  One partner buys out the other and becomes the sole owner. The departing partner receives their share in cash or through a set-off, often combined with a refinancing arrangement with the bank.
• Option 3: maintain joint ownership.
  You remain co-owners, for example to allow the children to stay in the home temporarily, agreeing to sell or buy out at a later stage.

In this article we focus on selling the house during a separation, but that choice should always be considered in light of the other two options. A good conversation with the bank and an objective valuation sometimes reveals that a buy-out or a period of continued joint ownership is actually more advantageous.

2. Selling the house during a separation: when does it make sense?

Selling the house during a separation is often the most appropriate course of action when:

• neither partner wants or is able to stay in the property;
• the monthly costs become too heavy for one person alone;
• the relationship has broken down to the point where long-term joint ownership is no longer a realistic option;
• you deliberately want a financial and emotional fresh start, free from ongoing mutual dependency.

A sale makes it possible to:

• pay off the joint mortgage;
• divide the remaining equity (or negative equity) in a clear-cut way;
• give both partners financial breathing room for a new beginning.

The downside is that you have to let go of the property and its surroundings, and that the timing of the sale is not always ideal (market conditions, children, work).

3. Step 1: map out the ownership shares and matrimonial regime

Before selling the house during a separation, you need to know exactly who owns which share. This depends on:

• the matrimonial regime (community of property, separation of assets, with or without a marriage contract);
• the contribution made at the time of purchase (personal savings, inheritances, gifts);
• how the property is registered in the title deed (50/50, 60/40, 100/0, …).

For married couples under the legal community-of-property regime, the family home is in principle jointly owned, but deviations are possible due to personal contributions or specific clauses. For cohabiting partners, it depends on what was recorded in the notarial deed of purchase at the time.

This ownership split is crucial for dividing the sale proceeds later on. A notary can draw this up clearly, so that you know exactly what percentage of the rights each person holds.

4. Step 2: a realistic valuation of the property

You then need to know what the property is worth today. Without an objective valuation, the question of selling the house during a separation quickly gets bogged down in arguments about prices being