How to buy someone out of a house

At a Glance

Buying someone out of a house means taking over their share of the equity so you become the sole legal owner. The process usually involves getting a property valuation, calculating how much equity the other owner holds, arranging a new mortgage or remortgage, and completing a transfer of equity through a solicitor. In most cases, a straightforward buyout takes four to eight weeks, though divorce, disputes or affordability issues can extend the timeline considerably.

What does it mean to buy someone out of a house?

Working out how to buy someone out of a house is something many joint owners face after a separation, a change in family circumstances, or when a co-buying arrangement no longer suits everyone involved. In practical terms, it means paying the other owner for their share of the equity, removing their name from the mortgage and the title deeds, and taking on sole responsibility for the property going forward.

When two or more people buy a home together, they are usually registered as the legal owners with HM Land Registry. To become the sole owner, you need to pay the other party the value of their equity share and complete a legal process known as a transfer of equity. The mortgage lender also has to agree to release the outgoing owner from the loan, which usually means a fresh affordability assessment on the person staying.

Who is responsible for the mortgage on a jointly owned home?

When more than one person is named on a mortgage, everyone on that agreement is jointly and severally liable for the repayments. In practice, this means each borrower is responsible individually and as a group. If one person stops paying, the lender can still pursue the other for the full amount, and any missed payments can affect the credit files of everyone on the loan.

This is why buying someone out of a house is not something that can be done informally. Until the outgoing owner is removed from the mortgage and the title deeds, they remain legally liable for the debt, even if they have moved out and are no longer contributing.

Your options when one owner wants to leave

Before starting a buyout, it is worth considering whether it is the right route for your situation. There are usually three broad options:

If you decide to sell instead, comparing local agents on real sale data can help you choose one whose performance justifies their fee. You can compare estate agents in your area to see which agents have the strongest performance selling homes locally.

How to buy someone out of a house: step by step

The steps below cover a typical buyout in England and Wales. Scotland and Northern Ireland have different conveyancing systems, so speak to a solicitor qualified in the relevant jurisdiction.

Step 1: Get an up-to-date property valuation

The first step is establishing what the property is currently worth. You can get an initial estimate from an online valuation, then follow up with valuations from local estate agents or a RICS surveyor for a more accurate figure. If the two of you disagree on value, a formal valuation from a RICS-registered surveyor can provide an independent benchmark that both parties are more likely to accept.

Step 2: Request a mortgage redemption certificate

Ask your current lender for a redemption statement. This tells you exactly how much is left to repay on the mortgage, along with any early repayment charges (ERCs) or exit fees that may apply if you are inside a fixed or discounted period. Redemption figures are usually valid for a limited window, so it is worth timing the request to align with your buyout activity.

Step 3: Calculate the equity split

Once you know the value of the home and the outstanding mortgage, you can work out the equity:

Property value − outstanding mortgage = total equity

You then split that equity according to the ownership position and any agreement between the owners. If you own as joint tenants, an equal split is often the starting point unless you agree otherwise or a court decides differently. If you own as tenants in common, the split may follow the beneficial shares recorded in a declaration of trust, transfer document or other legal paperwork. Your solicitor can confirm what applies.

Worked example

In this example, the person staying would take on the £200,000 mortgage in their sole name and pay the outgoing owner £100,000 for their share.

Step 4: Agree the buyout figure and any adjustments

The headline equity figure is a starting point, not the final number. In many cases, owners agree adjustments to reflect deposits contributed unequally, home improvements paid for by one party, or, in a separation, wider financial arrangements. Independent legal advice at this stage helps make sure the agreement is fair and properly documented.

Step 5: Arrange a new mortgage or transfer of equity

Most people need to borrow more to buy someone out of a house, because the outgoing owner's share of the equity has to be paid in cash. You usually have three routes:

1. A further advance with your existing lender: a top-up loan on your current mortgage, which can help avoid ERCs if you are still inside a fixed deal.
2. A product transfer plus additional borrowing: staying with the same lender but moving to a new product with a higher loan amount.
3. A full remortgage to a new lender: moving your borrowing to a different lender, often used when better rates are available elsewhere.

Whichever route you take, the lender will typically run affordability and credit checks on you as a sole applicant. A mortgage broker can be useful here, as lenders assess sole-applicant affordability very differently. According to Citizens Advice, it is also sensible to check whether you can afford the wider running costs of the home before committing.

Step 6: Instruct a solicitor for the legal transfer

The legal side is handled through a transfer of equity. Your conveyancing solicitor will:

• Draft the TR1 transfer document
• Liaise with the mortgage lender
• Register the change of ownership with HM Land Registry
• Advise on whether Stamp Duty Land Tax (SDLT) applies

SDLT can apply to a transfer of equity if the person taking over the mortgage is assuming a share of the debt above the current threshold, though the rules depend on your circumstances. Your solicitor will advise.

Buying out a partner from a mortgage during divorce

Buying out a partner from a mortgage is often part of a wider divorce or separation settlement, which can make the equity calculation more complex. The final split may not follow the ownership shares on paper, because the courts can adjust financial arrangements to reflect the needs of both parties and any children.

Until the buyout completes and the outgoing partner is formally released, both parties remain liable for the mortgage. It is worth confirming with your lender in writing that the release has taken effect once the transfer of equity is registered.

Speaking to a family solicitor early tends to save time and cost later. The Law Society has a search tool for finding a qualified family or property solicitor in your area. GetAgent also has a related guide on who gets the house in a divorce, which covers the wider financial picture.

What if you cannot afford to buy someone out?

If a standard mortgage does not stretch far enough on a single income, there are still options worth exploring with a broker.

Each option has trade-offs on cost, flexibility and long-term risk. Independent mortgage and legal advice is worth taking before committing.

How long does it take to buy someone out of a house?

A straightforward buyout, where both parties agree on the equity split and the remaining owner passes affordability easily, tends to take around four to eight weeks. The main factors that can lengthen the timeline are:

• Disputes over the valuation or equity share
• Divorce or separation proceedings running alongside the buyout
• Affordability issues with the new mortgage
• Delays in the transfer of equity paperwork with HM Land Registry
• Managing early repayment charges or product transfer timings

Building in some flexibility on when you want the process finished usually helps reduce stress if any of these come up.

Common challenges when buying someone out of a house

Affordability on a sole income

Passing affordability on your own is often the biggest hurdle. Lenders vary considerably in how they assess income multiples, self-employed earnings, bonuses, maintenance payments and benefits. If one lender declines, another may take a very different view of the same application, which is why speaking to a whole-of-market broker can be worthwhile.

Early repayment charges

If you are inside a fixed or discounted mortgage deal, exiting early to remortgage can trigger an ERC. This is usually a percentage of the outstanding balance and can run to several thousand pounds. In some cases, a further advance or product transfer with the same lender avoids the charge, so it is worth pricing both routes.

Disagreements over value or share

Buyouts are more likely to stall when the two parties cannot agree on what the home is worth or how the equity should be divided. Independent valuations, mediation and clear legal advice on both sides usually help move things forward more quickly than informal negotiation.

Legal and mortgage fees

Solicitor fees, valuation fees, mortgage arrangement fees and any ERCs all add to the cost of the buyout. Getting a full picture of these costs up front helps you budget accurately and factor them into the equity figure you agree.

References

• Citizens Advice
• GetAgent
• HM Land Registry (house prices search)
• Stamp Duty Land Tax guidance
• The Law Society
• Royal Institution of Chartered Surveyors (RICS)