What Are Apportionments When Buying a Leasehold Property?
If your solicitor is calculating apportionments, this is a good sign that you are reaching the end of your conveyancing process. The question of how much you have to pay can be confusing, as you may not have budgeted for paying the whole year's service charges and ground rent on completion.
Understanding what these charges are, how they are calculated, and why they matter is vital to ensuring your completion day runs smoothly and without unexpected costs. In this article, we'll explain how to calculate your apportionments, what leasehold costs get apportioned, what happens when the costs haven't yet been paid, how the seller gives you an allowance, and how to protect yourself when the service charge accounts have yet to be finalised.
Understanding apportionments in UK conveyancing
In UK property law, an apportionment is the mathematical division of ongoing property expenses between the buyer and the seller. The golden rule of property completion is simple:
The seller is financially responsible for the property up to the day before completion. The buyer becomes financially responsible from the exact day of completion onwards.
Because leasehold expenses like ground rent and service charges are almost always demanded by the freeholder or management company in advance (often quarterly, half-yearly, or annually), the seller will usually have paid for a block of time that extends past the moving date. Through **what are apportionments in conveyancing**, the buyer compensates the seller for the days the buyer will live in the property during that prepaid period.
Common outgoings are split on a leasehold completion statement
Your final leasehold completion statement will generally split these advanced payments into distinct categories:
Service Charge Apportionments
Service charges cover the day-to-day running of the building, including communal cleaning, lift maintenance, buildings insurance, and contributions to a reserve fund. If the seller paid a £1,200 annual service charge in January, and you complete the purchase on 1 July, they have paid for 6 months of upkeep that you will benefit from. You must reimburse them for those 6 months.
Ground Rent Apportionments
Ground rent is the regular fee paid to the freeholder for the lease of the land. While the Leasehold Reform (Ground Rent) Act 2022 banned ground rents on entirely new residential leases, millions of existing leasehold properties still carry historical ground rent terms. These are typically paid in advance, annually or biannually, and must be apportioned exactly like service charges.
Building Insurance Apportionments
Not all freeholders include the building insurance within the service charges. Where they don't, this will be a separate line on the leasehold completion statement.
Maintenance Apportionments
On a freehold with an Estate Management Company, you'll pay apportionments for the maintenance of the estate.
How a Conveyancing Solicitor Calculates Apportionments
Your solicitor will liaise with the seller’s legal team to look at the invoices and receipts provided by the managing agent. They calculate the precise financial split down to the single day using a standard daily rate formula:
A Quick Working Example:
To see this in action, imagine a half-yearly service charge of £600 that covers a 181-day period, where you complete your purchase with 61 days left of that period:
- Step 1: £600 divided by 181 days = £3.31 per day
- Step 2: £3.31 times 61 days = £201.91
Expert Tip: Where does the seller get the apportionment accounts from?
The seller will get up-to-date service charge and ground rent accounts from the freeholder or managing agent. Even though the accounts are included in the Leasehold Management Pack, once the seller and buyer agree on a completion date, the seller's solicitor will request up-to-date accounts.
This avoids the potential for missing payments made in between by the seller, but it can also lead to a mad rush in the build-up to the completion day. It is not uncommon for the buyer to find out the apportionments to pay the day before, or even on completion day, which can dampen what is otherwise a very exciting time, as they need to make a bank transfer of the balance to their solicitor.
Andrew Boast FMAAT
CEO of SAM Conveyancing
Beware of the Deficit: What are Leasehold Retentions?
Service charge payments are set in a budget by the freeholder at the start of the year, and it is very common for a freeholder to underestimate the leasehold costs. Whether it was spending more on cleaning or maintenance, these costs were passed on to the block's leaseholders.
For a buyer, this poses a serious risk. Imagine buying a property in March, and the previous year's accounts up to December aren't finalised until June. If you don't have any money held back from the seller, you are liable to pay for the shortfall, even though you weren't the owner at the time. This is why the buyer's solicitor should ask for a retention to cover a potential shortfall once the service charge accounts have been finalised.
A retention can either be written into the contract as a rider, or it'll be handled via agreement. It should have a date for when the retention should be released, even if the service charge accounts haven't been finalised. The retention will usually be held within the seller's client account until the service charge accounts are finalised, and any sums due are paid from it.
Expert Tip: Solicitors charge extra for managing retentions
A solicitor will normally levy an administration fee for handling a retention. This fee covers the work in liaising with the freeholder and or seller's solicitor in the future, and settling any sums due.
Andrew Boast FMAAT
CEO of SAM Conveyancing
Summary: What to Look Out For Before Completion
Before you finalise your purchase and transfer your funds, ensure you take the following steps:
- Check the Leasehold Pack: Check the seller's leasehold management pack for the service charge and ground rent costs, check the frequency of the payments, and ensure the seller is up to date.
- Check the Dates: Verify that the service charge and ground rent periods match the invoices provided by the freeholder.
- Confirm Retentions: Ensure your solicitor has successfully negotiated a retention clause if the management company’s accounts for the current or previous financial year have not yet been finalised.
Andrew Boast FMAAT is a qualified accountant, conveyancing specialist and author with over 25 years of experience in the UK property sector. Since beginning his career in 2000 within established SRA and CLC-regulated conveyancing solicitor firms, Andrew has overseen the legal journeys of more than 75,000 clients.
He is the self-published author of the first-time buyer guide: How to Buy a House Without Killing Anyone, and a frequent contributor to mainstream UK media on legislative updates, property law, first-time buyer guides, conveyancing best practices, and stamp duty changes. Andrew specialises in resolving complex title issues, property conflict disputes, and property tax options, streamlining the enquiry process to reduce transaction times and maintaining a client-friendly focus.
Amanda Ambler is a highly accomplished conveyancing specialist with over 15 years of dedicated experience across residential property law, legal compliance, and practice management. Having held senior roles, including Head of Legal Practice and Head of Conveyancing at established UK law firms, Amanda possesses a profound, hands-on understanding of the technical intricacies of the property market.
As the designated Legal Content Reviewer for SAM Conveyancing, Amanda ensures that every guide, legal update, and resource published meets the absolute highest standards of accuracy, regulatory compliance, and factual integrity. Her rigorous review process guarantees that complex property legislation and industry processes are communicated clearly, transparently, and safely for home buyers and sellers alike.



