Selling a House Under Power of Attorney: 2026 UK Guide

By Lisa Hayes · 31 July 2026

Yes, you can sell someone's house on their behalf using a power of attorney, but only if the paperwork is the right type, it is registered, and the sale is genuinely in that person's best interests. If they still have their mental faculties, they can simply instruct you. If they have lost capacity and there is no registered Lasting Power of Attorney in place, you cannot act at all until the Court of Protection appoints you as a deputy. This guide walks you through both routes, the traps that quietly kill these sales, and how to move quickly without falling foul of the law.

I have talked hundreds of families through this, usually at the worst possible moment: a parent has gone into a care home, the fees are mounting, and the empty house is bleeding money on insurance, council tax and standing charges every single week it sits there. The good news is that selling is almost always possible. The frustrating news is that the process is full of small legal potholes that most estate agents and even some solicitors handle badly. Let me save you the wasted months.

Can you actually sell a house under power of attorney?

The short answer is yes, provided you hold the correct kind of authority. In England and Wales that means a Property and Financial Affairs Lasting Power of Attorney (LPA) that has been registered, or a deputyship order from the Court of Protection. A Health and Welfare LPA does not give you any power over money or property, so if that is all you have, you cannot sell.

There is also the older Enduring Power of Attorney (EPA). These stopped being created on 1 October 2007, but existing ones are still valid. If the owner has lost capacity, an EPA must be registered with the Office of the Public Guardian before you can rely on it to sell.

Everything you do as an attorney or deputy is governed by the Mental Capacity Act 2005. The single principle that runs through all of it: you act for the person, not for yourself, and every decision must be in their best interests. Hold onto that. It answers about ninety per cent of the questions people ask me.

First question: does the owner still have mental capacity?

This is the fork in the road, and it decides everything that follows.

Mental capacity is decision-specific. Someone can lack the capacity to manage their finances but still be perfectly able to decide what to have for lunch. For a house sale, the question is whether they can understand, retain and weigh up the decision to sell and communicate it. A diagnosis of dementia does not automatically mean they have lost capacity. Early on, many people can and should make the decision themselves.

If the owner still has capacity and you hold a registered Property and Financial Affairs LPA that allows it, you can act on their instructions and with their permission. In practice, if they can sign, they usually just sign the sale documents themselves and you barely need the LPA at all.

If the owner has lost capacity, two things become true at once. First, they cannot sign anything. Second, you can only step in if you already hold a registered LPA (or EPA), or if the court appoints you. There is no shortcut. Well-meaning relatives who "just get Mum to sign with a bit of help" are storing up a mortgage fraud or void-transfer problem for later.

The two routes: registered LPA versus Court of Protection deputyship

Which path you are on comes down to timing. Did the family sort out an LPA while the owner was still well? Or has capacity already gone, with nothing in place? Here is how the two compare.

The lesson buried in that table is blunt: an LPA that costs £82 and an afternoon saves your family thousands of pounds and half a year of delay later. If your parents are still well and reading this over your shoulder, sort their LPAs out this month. It is the single best piece of admin any family can do.

You hold a registered LPA. What does selling actually involve?

Assuming you have a registered Property and Financial Affairs LPA and the owner has lost capacity, here is the real-world order of play.

1. Confirm the LPA is registered and unrestricted. Check the stamp from the Office of the Public Guardian on every page, and read the "instructions and preferences" box. Some donors added conditions that limit what you can do. Your conveyancer and the buyer's solicitor will both want to see it.
2. Prove you're the attorney. You can do this with the certified paper LPA or by giving the buyer's solicitor an "access code" through the government's Use a Lasting Power of Attorney service, which lets them view it online.
3. Talk to any Health and Welfare attorney first. Selling the home is also a decision about where the person will live. The government's own guidance says that if you decide to sell the donor's home, you should discuss where they will live with their health and welfare attorney. Do not skip this conversation.
4. Get a proper valuation. Not a Zoopla guess. A RICS "Red Book" valuation, or at the very least two or three agent appraisals in writing, so you can show the sale price was fair. This protects you if anyone ever questions the sale.
5. Instruct a conveyancer and tell them the sale is under an LPA. This matters. The transfer deed will be signed by you as attorney, worded correctly, and the solicitor needs to know from day one.
6. Keep every record. Valuations, offers, the reason you accepted a particular offer, and where the money goes. The proceeds belong to the owner and must go into their account, kept separate from yours.

The trap that quietly stops these sales: jointly owned homes

This is the one that catches people out, and I have seen sales collapse days before completion because nobody spotted it early.

Say a husband and wife own the house together, and the wife has lost capacity. The husband holds her LPA, so he assumes he can just sign for both of them and sell. He cannot, and the reason is a genuinely fiddly point of trust law.

When two people own a property together, they hold it on a "trust of land". The law requires at least two trustees to give "good receipt" for the sale money. Our husband is one trustee in his own right. He is also his wife's attorney. But he cannot sign twice, once as himself and once for her, and count as two separate people. In the eyes of the Land Registry that is one signature doing two jobs, and it does not work. If the property has a Form A restriction on the title (very common where owners hold as tenants in common), the transfer will be rejected.

The fix is straightforward once you know it. Under the Trustee Delegation Act 1999, the capable co-owner appoints a second trustee — often another trusted family member or the solicitor — purely for the purpose of the sale. The two of them then sign the transfer and give good receipt, and the sale goes through. Your conveyancer arranges this, but only if you tell them early that the co-owner has lost capacity. Spring it on them at exchange and you will lose a fortnight.

Can you buy the property yourself, or sell it to family?

Tread very carefully here. This is where good intentions turn into Court of Protection investigations.

An attorney has a legal duty to avoid conflicts of interest. Selling the owner's home to yourself, your spouse, or your children is a textbook conflict, because you are on both sides of the deal. The government guidance is explicit that you need to get legal advice if the sale is below market value, if you want to buy the property yourself, or if you are giving it to someone else.

In plain English: you cannot buy the house yourself under the LPA, even at full market value, without a specific authorisation from the Court of Protection. The court will only allow it if the evidence shows the transaction is clearly in the owner's best interests and the price is not an undervalue. Sell it cheaply to a relative and you risk being reported, having your powers stripped, being ordered to repay the shortfall, and in serious cases facing criminal charges. It is not worth it. Sell at arm's length to a genuine third party at a fair price and this entire problem disappears.

No LPA and capacity has already gone: the deputyship route

This is the harder road, and sadly the one many families find themselves on because nobody set up an LPA in time.

If the owner has lost capacity and there is no valid LPA or EPA, nobody has automatic authority. Not a spouse, not the next of kin, nobody. To sell the house, you have to apply to the Court of Protection to be appointed as a property and financial affairs deputy. Here is roughly what that involves.

• The forms. The core application is a COP1, supported by a COP1A (details of the person's property and finances), a COP3 assessment of capacity completed by a doctor or other qualified professional, and a COP4 deputy's declaration where you set out your suitability.
• The cost. The application fee is £421, with a further £259 if the court decides a hearing is needed. There is a one-off £100 assessment fee once you are appointed, then an annual Office of the Public Guardian supervision fee of £320 (general supervision) or £35 (minimal). Many deputies also have to take out a security bond, a form of insurance that protects the person's money.
• The timescale. Realistically four to six months from application to order, sometimes longer if the court asks questions or a hearing is required. Start early. The empty house costs money every week you wait.
• The power to sell. A standard deputyship covers day-to-day finances. Selling the home is a bigger step, and the court order may need to specifically authorise the sale, particularly if the deputy or their family stands to benefit. Ask your solicitor to build this into the application so you do not have to go back to court a second time.

Fees can be reduced or waived if the person is on a low income or certain benefits, so it is always worth checking whether you qualify for help before paying.

How long does the whole thing take, and what will it cost?

If you already hold a registered LPA, the answer is refreshingly simple: about as long as any normal house sale. On the open market that is commonly two to four months from listing to completion, sometimes more if the chain is slow. The LPA itself adds very little delay once solicitors have seen it.

If you are going through deputyship, add the four to six months for the court order on top of the sale itself. That is the real cost of not having an LPA in place, and it is why care fees can eat through savings while an empty house sits unsold and unsellable in legal limbo.

For families under time pressure, this is often the moment to weigh up a guaranteed cash sale against the open market. More on that next.

Selling the house: open market or a fast cash sale?

Once you have the authority to sell, you face the same choice any seller does, but with an extra duty layered on top: you must be able to justify your decision as being in the owner's best interests. That cuts both ways. A higher price is not automatically "best interests" if the owner is haemorrhaging £1,400 a month in care fees and the open-market sale might take six months and still fall through.

My honest steer: if there is no urgency, list on the open market, get the best price, and document it. If care fees or mounting debts are burning through the owner's money every month, a fast, certain sale at a fair figure can genuinely be the more caring decision, not the lazy one. Just make sure the price is defensible with a proper valuation behind it, and that the buyer has nothing to do with you. If you want to understand what a quick sale really nets versus the open market, our guides on cash house buyers and how to sell your house fast lay out the real numbers.

Common mistakes I see families make

After years of these conversations, the same avoidable errors come up again and again.

• Assuming next of kin have automatic power. Being someone's child or spouse gives you no legal authority over their property. Without an LPA or deputyship, you cannot sell, full stop.
• Trying to use an unregistered LPA or EPA. If capacity has gone, it must be registered first. Buyers' solicitors will check.
• Forgetting the two-trustee rule on jointly owned homes. This one derails completions. Flag joint ownership to your conveyancer on day one.
• Selling to a relative cheaply "to keep it in the family". Well-meant, and a fast track to a Court of Protection investigation. Don't.
• Mixing the money. Sale proceeds go into the owner's account, not yours. Keep everything separate and recorded.
• Waiting to apply for deputyship. Every month you delay is another month of care fees and empty-house costs. Start the application the moment you realise there is no LPA.

What if the owner dies during the sale?

It is a hard thing to plan for, but it happens, especially when the owner is elderly and in care. You need to know the rule in advance.

An LPA and a deputyship both end automatically the moment the person dies. Your authority to sell dies with them. From that point the property forms part of their estate, and control passes to the executors named in their will, or to administrators if there is no will. The sale usually has to pause while a grant of probate or letters of administration are obtained, and then it continues under the estate rather than the LPA. If you find yourself in that situation, our guide to selling an inherited property and whether you can sell inherited property before probate will pick up the thread.

One related point that trips people up: as an attorney or deputy you cannot change or write the owner's will. If they need a will and can no longer make one, the only route is to apply to the Court of Protection for a statutory will. It is a separate application and worth taking advice on.

A quick word on the rest of the UK

Everything above is the law for England and Wales. Scotland and Northern Ireland run their own systems. In Scotland the equivalent is a Continuing Power of Attorney, overseen by the Office of the Public Guardian (Scotland), with a guardianship order from the sheriff court where none exists. Northern Ireland uses Enduring Powers of Attorney and its own Office of Care and Protection. The principles are similar, but the forms and bodies differ, so get local advice if the property is not in England or Wales.

Where to start

If you are staring at an empty house, care fees ticking up, and a stack of forms you did not ask for, take it one step at a time. Establish which route you are on: registered LPA or deputyship. Get a proper valuation so any sale is defensible. Tell your conveyancer about the power of attorney and any joint ownership from the very first phone call. And keep records of everything.

When you are ready to understand what the property is actually worth and what a fair, fast sale would look like, you can compare offers through Ready Steady Sell with no pressure and no obligation. It costs nothing to see your options, and it might be the difference between months of care-fee worry and a clean, certain sale. If you would rather talk it through first, our overview of how much your house is worth and a free, no-obligation valuation are a sensible first step.