Service charge arrears when buying a flat, what buyers need to know

Here is the thing nobody tells you at the start. When you buy a leasehold flat, you are not just buying bricks and a view. You are stepping into a legal relationship with the freeholder or their managing agent. And that relationship comes with history.

Service charges are what leaseholders pay towards the upkeep of the building. Things like cleaning the communal areas, insuring the block, repairing the roof. If the seller has not paid them, those debts do not simply vanish when they hand over the keys. In many cases the managing agent or freeholder can pursue the new owner for arrears, because the debt attaches to the lease itself rather than to the individual who ran it up.

That is the bit that catches first time buyers off guard. You could complete on a Friday, move in on Saturday, and receive a letter on Monday chasing money you never owed. So understanding how this works before you exchange is genuinely important.

A good conveyancing solicitor will raise enquiries with the seller's solicitor asking for a full account of service charges. This includes current year charges, any historic arrears, and whether there are any anticipated major works that have been billed or are about to be.

The managing agent usually provides a formal statement showing what is owed. Your solicitor should also ask for receipts or evidence of payment if the seller claims they are up to date. Do not assume that because the seller says everything is paid, it is. Agents sometimes take weeks to update their records, and a payment made in June might not show as cleared until August.

You want to see a clear nil balance, or a specific figure for what is outstanding. Vague assurances are not good enough at this stage.

If there are unpaid service charges, the standard approach is a retention. Your solicitor holds back a sum of money from the completion funds. That money sits in their client account after the sale goes through, and it is only released to the seller once the arrears are cleared and evidence of payment is provided to your solicitor.

So say the seller owes two thousand pounds in service charges. Your solicitor might retain that exact amount, or a slightly higher figure to cover any interest or admin fees the managing agent adds on. The seller gets their sale proceeds minus the retention. Once they have settled the debt and your solicitor has confirmation from the managing agent, the retained sum is released.

This is clean, it is common, and it is the right way to handle it. If your solicitor is not suggesting a retention where arrears exist, ask them directly why not.

Some sellers push back on retentions because they need every penny of their sale proceeds to fund their onward purchase. That is understandable, but it is their problem to solve, not yours. Do not let anyone pressure you into waiving the retention.

Never agree to buy a property subject to existing service charge arrears without a retention or an equivalent financial protection in place. Full stop.

Some sellers, or their solicitors, will suggest you simply take on the arrears and deduct them from the purchase price. On paper that sounds logical. In practice it can be messy. You might find the managing agent adds interest or legal costs on top of the original debt, pushing the figure higher than the deduction you agreed. And you are now the one fielding letters and chasing resolution.

You should also never sign anything that expressly acknowledges you are accepting liability for the seller's arrears. That kind of wording can appear in a deed of covenant or a transfer document if someone is not paying attention. Your solicitor should be checking this, but it is worth asking them to confirm.

There is another scenario worth knowing about. If a managing agent has already obtained a County Court judgment against the seller for unpaid charges, that is a more serious situation. A judgment against the lease itself can affect your title. Your solicitor needs to see that judgment satisfied and vacated before you complete, not promised to be sorted afterwards.

Arrears are one thing. Anticipated costs are another, and they can be just as significant.

Leasehold properties often have major works planned or underway. A new roof, external redecoration, lift replacement. If the works have been formally notified to leaseholders under a Section 20 consultation process, the costs can be substantial and they will fall on whoever owns the flat when the bill lands.

Your solicitor should be asking whether any Section 20 notices have been served and whether there are any known major works on the horizon. The managing agent's enquiry pack should cover this. If major works are planned and the likely cost is significant, you need to factor that into your purchase price negotiation, not discover it six months after you move in.

This is one area where the law can shift quickly, so if anything in the replies to enquiries looks vague or incomplete, ask your solicitor to press for more detail and confirm with them what your position would be.

The seller usually pays for the managing agent to provide a formal information pack as part of the sale process. This pack should include the current service charge account, the most recent accounts for the building, details of the reserve or sinking fund, insurance details, and information about any pending works or disputes.

If you want to look at the title register yourself before instructing a solicitor, you can download it from HM Land Registry for seven pounds per document on gov.uk. That will tell you the title number, whether the property is leasehold, and who the registered proprietor is. It will not tell you about service charge arrears, that information only comes through the conveyancing enquiries process.

Do read the managing agent pack when your solicitor shares it with you. It is not the most gripping document, but the reserve fund balance matters. A building with a healthy sinking fund is much less likely to hit leaseholders with a surprise special levy for emergency repairs.

While you are thinking about ongoing costs, it is worth knowing where ground rent sits in all of this. For new long residential leases granted from the thirtieth of June 2022, the Leasehold Reform (Ground Rent) Act 2022 means ground rent is capped at a peppercorn, which effectively means zero. So if you are buying a newly built flat with a new lease, ground rent should not be a concern.

If you are buying an older flat with a pre-2022 lease, check what the ground rent is and whether it escalates. A ground rent that doubles every ten or twenty years can cause serious problems with mortgage lenders and resale value further down the line.

And if the lease has fewer than eighty years remaining, marriage value applies when calculating the cost of a statutory lease extension. That can make extending significantly more expensive. The Leasehold and Freehold Reform Act 2024 includes a provision to abolish marriage value, but that part is not yet in force and has no confirmed start date as of September 2026. So for now, marriage value still applies. Confirm the current position with your solicitor before making any assumptions about extension costs.

The good news is that the two year ownership rule for claiming a statutory lease extension was abolished from the thirty first of January 2025. So if you buy a flat and immediately want to extend the lease, you no longer have to wait two years before making a statutory claim.