How to check service charge history before buying a flat

When you're buying a flat, the headline purchase price gets all the attention. But service charges are the bill that never stops. They cover everything from cleaning the communal hallway to replacing the roof, and in some buildings they run into thousands of pounds a year per flat.

The problem is that charges can look perfectly reasonable in year one and then quietly balloon. A new managing agent, a deferred maintenance programme finally catching up, or a big-ticket repair that the reserve fund can't cover, any of these can send your annual bill sharply upward after you've moved in. You want to know about that before you exchange, not after.

Checking the history isn't complicated, but you do need to know which documents to ask for and what to look for inside them.

There are four documents you should request as a matter of course. Your solicitor will chase most of them through the seller's solicitor as part of the standard enquiries, but it's worth knowing what they are so you can push if anything is missing.

First, the last three years of certified service charge accounts. These are the audited or certified annual accounts prepared for the whole building, not just the one flat you're buying. They show total income, total expenditure broken down by category, and the balance of the reserve or sinking fund. Three years gives you a trend, not just a snapshot.

Second, the service charge budget for the current year. This is the managing agent's forecast of what they expect to spend. Compare it against the actual accounts from previous years and you'll quickly see whether estimates have historically been accurate or whether actuals always overshoot.

Third, the most recent reserve fund statement. This tells you how much money is sitting in the pot set aside for major works. A healthy reserve fund means the building can absorb a new roof or a lift replacement without hitting leaseholders with a sudden large demand. A depleted one is a warning sign.

Fourth, any Section 20 notices issued in the last two years. Under the Landlord and Tenant Act 1985, freeholders must consult leaseholders before carrying out qualifying works that will cost any one leaseholder more than two hundred and fifty pounds. If a Section 20 notice has gone out recently, it means significant works are either planned or already under way, and you could be buying into a bill that's about to land. Always confirm the current position on Section 20 law with your solicitor, as the consultation thresholds can change.

Once you have three years of accounts, lay them side by side. You're looking for a few specific things.

Look at the total charge per flat, or the total building expenditure if per-flat figures aren't broken out. Is it rising every year? A small increase in line with general inflation is normal. Charges jumping well above that, year on year, suggests either the building has been neglected and is now catching up, or the managing agent isn't keeping costs under control.

Drill into the categories. Insurance is one to watch closely, because building insurance costs have risen significantly across the UK in recent years, particularly for blocks with cladding issues or in flood-risk areas. If insurance is eating an ever-larger share of the budget, ask why.

Look at the reserve fund balance over time. If it's been falling rather than growing, the building is spending more on major works than it's putting aside. That's not automatically a crisis, but it warrants a conversation.

Check whether there are any one-off items in any of the three years. A large repair in year two might explain a spike that year without being a recurring problem. But if the accounts show a different large one-off every year, that suggests a building with ongoing maintenance issues rather than a single unlucky event.

Finally, compare the budget against the actuals for each year. If the managing agent consistently underestimates costs, the current year's budget may be flattering the picture.

Your solicitor will raise formal enquiries, but you or your solicitor can also write directly to the managing agent with specific questions. Here's what's worth asking.

Ask what the estimated service charge will be for the next twelve months per the current budget, and whether any unbudgeted works are anticipated. You want them on record.

Ask about the current reserve fund balance and what the target balance is. A managing agent who has no target figure in mind for a building of that age and size is not managing it particularly carefully.

Ask whether any Section 20 consultation notices are planned or in progress. This is separate from asking for copies of past notices. You want to know what's coming, not just what's already happened.

Ask whether there are any known defects or planned major works in the next three to five years. Roofs, lifts, windows, cladding remediation, external decoration cycles. A good managing agent will be able to give you a rough schedule. Vague or evasive answers here are themselves informative.

Ask about any ongoing disputes between the freeholder and leaseholders, or any tribunal applications. Disputes over service charges are not uncommon, and an active one can complicate your purchase and your future life in the building.

Ask whether the building has a valid EWS1 form if it's a multi-storey block. Cladding and fire safety issues have affected mortgage availability on many flats, and you need to know the position before your lender does their valuation.

A good conveyancing solicitor will raise a standard set of leasehold enquiries with the seller's solicitor, and the responses should cover much of the above. But solicitors vary in how proactively they chase incomplete answers, so it pays to be an engaged client.

Make sure your solicitor has actually received and reviewed the last three years of certified accounts, not just been told they exist. Ask them to flag any year where actual expenditure exceeded the budget by a meaningful amount, and to confirm whether the reserve fund looks adequate for the age and type of building.

If the seller can't or won't provide three years of accounts, that's a red flag in itself. It may mean the building has changed managing agents and records are incomplete, or it may mean something less innocent. Either way, push for an explanation.

Your solicitor should also check the lease itself to understand how the service charge is calculated and what it can and can't include. Some leases contain caps or restrictions that protect you. Others are drafted very broadly in the freeholder's favour. Knowing which you're dealing with matters.

While you're doing your service charge due diligence, it's worth checking a couple of other things about the lease at the same time.

For leases granted from 30 June 2022 onwards, ground rent is capped at a peppercorn under the Leasehold Reform (Ground Rent) Act 2022, which effectively means zero. But older leases can still carry a ground rent that rises over time, and some older leases have ground rent review clauses that can cause problems with mortgage lenders. Check what your lease says.

You can download the title register for the property from HM Land Registry for seven pounds. It'll show you the title number, confirm whether the property is leasehold or freehold, and often include details of the lease length and any registered charges. It won't show you service charge history, but it's a useful starting point and very cheap for what it tells you.

If the lease has fewer than eighty years remaining, you should take advice on lease extension before proceeding. Lenders commonly want around seventy to eighty-five years left on a lease at the time you apply, and thirty to forty years remaining when the mortgage ends, though each lender sets its own requirements. If the lease has fewer than eighty years left, extending it will trigger a payment called marriage value on top of the standard premium, and that can be significant. The Leasehold and Freehold Reform Act 2024 includes a provision to abolish marriage value, but as of September 2026 that part of the Act is not yet in force and has no confirmed start date, so marriage value still applies. Confirm the current position with your solicitor.

Service charge history isn't the most glamorous part of buying a flat, but it's one of the most financially important. A building with rising charges, a depleted reserve fund, and a managing agent who can't answer basic questions about upcoming works is a building that could cost you significantly more than you budgeted for, every year.

The good news is that the information is available if you ask for it. Three years of certified accounts, the current budget, the reserve fund balance, and clear answers from the managing agent will give you a genuinely informed view of what you're buying into.

If anything you find raises concerns, talk to your solicitor before you exchange. You might be able to negotiate a retention from the purchase price to cover anticipated works, or you might decide the building simply isn't the right one. Either outcome is better than finding out after you've moved in.