If you own a leasehold flat or house, you'll likely pay two separate charges on top of your mortgage: ground rent and service charges. They're often confused, but they cover completely different things, and they work under different rules.

Ground rent: what it actually is

Ground rent is a payment to the freeholder simply for owning the land your property sits on — it isn't linked to any service you receive. Historically, leases were written so ground rent doubled every 10 or 25 years, which could turn a modest £50-a-year charge into thousands of pounds within a couple of decades. This practice caused serious problems for leaseholders trying to sell or remortgage, because lenders became wary of "escalating" ground rent clauses.

Reforms in recent years have restricted ground rent on most new long residential leases to a peppercorn (effectively zero), and further leasehold reform has aimed to make it easier and cheaper for existing leaseholders to challenge or buy out onerous ground rent terms. If you're unsure what your lease says, the ground rent amount and any review dates should be set out clearly in the lease document itself.

Service charges: what you're paying for

Service charges cover the actual cost of maintaining shared parts of a building or estate — things like:

  • Buildings insurance for the block
  • Cleaning, gardening and lighting of communal areas
  • Lift maintenance and repairs
  • A reserve or "sinking fund" for large future works, such as re-roofing or external redecoration
  • Management agent fees

Unlike ground rent, service charges are meant to reflect real costs. Freeholders or managing agents usually estimate costs for the year ahead, bill leaseholders (often quarterly or annually), and then reconcile the estimate against actual spending — meaning you could owe a top-up or receive money back.

Why charges rise over time

Service charges tend to increase because of general inflation in labour and materials, ageing buildings needing more maintenance, and large one-off works such as major repairs that get charged separately as a "Section 20" cost for bigger projects in England and Wales. A sudden spike is often linked to a specific project rather than ordinary running costs, so it's worth asking for an itemised breakdown whenever a bill jumps.

Your rights if a charge seems unreasonable

Leaseholders have some real protections here:

  • Charges must be reasonable. Costs have to be reasonably incurred, and any work has to be of a reasonable standard.
  • You can request evidence. You're entitled to ask for a summary of costs and, in many cases, to inspect receipts and invoices behind the charges.
  • Consultation for major works. For larger projects, landlords generally have to consult leaseholders before the work goes ahead, or the amount they can recover may be capped.
  • You can challenge charges. If informal queries don't resolve things, leaseholders can apply to the appropriate property tribunal to have the reasonableness of a service charge decided.

A worked example

Say your annual service charge estimate is £1,800, split across four quarterly payments of £450. At year-end, the managing agent reconciles actual spending at £2,000 due to an unexpected repair, meaning you owe a further £200. The following year, if no major works are planned, the estimate might drop back toward £1,800. This up-and-down pattern is normal — what matters is whether the underlying costs are justified.

Common mistakes

  • Assuming ground rent and service charge are the same thing when budgeting for a leasehold purchase
  • Not reading the lease's ground rent review clauses before buying
  • Ignoring service charge demands rather than querying them, which can lead to added legal costs and even risk to the lease itself
  • Not checking whether a reserve fund exists for major works, which can mean unexpectedly large one-off bills later

What to do next

Before buying a leasehold property, ask your conveyancer to explain the ground rent terms and review the last few years of service charge accounts. If you already own one and a charge looks wrong, request an itemised breakdown in writing first — many disputes are resolved without ever reaching a tribunal.