Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
When two parties agree in principle to a commercial property deal, whether a freehold sale or a new lease, the next practical step is usually to write down what has been agreed so far. That document is commonly called heads of terms, sometimes a memorandum of understanding, and occasionally a term sheet.
It sits between the handshake and the solicitor-drafted contract, capturing the commercial shape of the deal so that lawyers on both sides know what they are working towards. Getting heads of terms right saves time, reduces legal costs, and cuts down the scope for arguments later.
Getting them wrong, or skipping them, tends to produce delays, renegotiation, and occasionally deals that collapse entirely. This guide walks through what heads of terms typically cover in a UK commercial property context, how binding they are, and what to watch out for before you sign.
Overview
Heads of terms are a written summary of the main commercial points agreed between a buyer and seller, or a landlord and tenant, before formal contracts are drafted. In commercial property, they are most often produced by the agents handling the transaction, though sometimes the parties or their solicitors prepare them.
The document records things like the property, the price or rent, the length of a lease, and any conditions that need to be satisfied before the deal can proceed. Most heads of terms in England and Wales are drafted on a 'subject to contract' basis, which means the commercial points are not legally binding until a formal contract or lease is signed.
That said, certain clauses within heads of terms, such as confidentiality, exclusivity, or who pays costs if the deal falls through, are often intended to bind the parties from the moment they are signed. Because of that mix, it pays to read them carefully and understand which parts you are actually committing to.
Key steps
Identify the parties and the property accurately. Set out the full legal names of the buyer, seller, landlord or tenant, along with company numbers where relevant. Describe the property clearly using the address, any title number, and a note of what is and is not included, such as car parking, storage, or shared areas. Ambiguity here causes problems later when solicitors start drafting.
Agree the core financial terms. For a sale, this means the purchase price, whether VAT applies, and how any deposit will be handled. For a lease, it means the annual rent, rent-free periods, rent review pattern, service charge arrangements, and any tenant incentives such as capital contributions or fit-out allowances. Spell out what the rent covers so there are no later surprises.
Set out the key dates and lease length. Record the target exchange and completion dates for a sale, or the proposed lease start date and term length for a letting. If there are break clauses, say who can operate them, when, and on what conditions. If the lease is intended to be inside or outside the Landlord and Tenant Act 1954 security of tenure provisions, state that clearly.
List the conditions and assumptions. Note anything the deal depends on, such as satisfactory surveys, planning consent, landlord consent to assignment, or board approval. Flag any assumptions each side is relying on, like the property being sold with vacant possession or a specific use being permitted under the existing planning consent.
Address costs, exclusivity, and status. Confirm that the heads of terms are 'subject to contract' and therefore not binding in relation to the commercial terms. Separately, decide whether provisions on confidentiality, exclusivity (lock-out), and legal costs should be binding, and say so in terms. Then circulate to both solicitors before anyone signs.
Generally the commercial terms are not binding when the document is marked 'subject to contract', which is standard practice in England and Wales. However, specific clauses within heads of terms, such as confidentiality, exclusivity periods, or agreements about who pays abortive costs, can be drafted to be legally binding. It is important to read the wording carefully and be clear which parts you are actually committing to before signing.
Q Who usually prepares heads of terms in a commercial property transaction?
In most cases the commercial property agent acting for the landlord or seller prepares the first draft, then circulates it to the other side for comment. Solicitors on both sides often review the draft before it is signed, particularly on larger deals or complex lettings. On smaller transactions the parties sometimes negotiate directly. Whoever drafts, it is sensible to have your solicitor look at the wording before you agree.
Q What is the difference between heads of terms and a contract?
Heads of terms summarise the commercial points the parties have agreed in principle. A contract, such as a sale contract or lease, is the formal legally binding document that transfers property rights or creates a tenancy. Heads of terms guide the solicitors when they draft the contract but do not themselves transfer property or grant a lease. You still need the formal document to complete the transaction.
Q Should heads of terms include VAT on the rent or purchase price?
Yes. Whether the seller or landlord has opted to tax the property for VAT makes a meaningful difference to the total cost, particularly for tenants who cannot recover VAT. Heads of terms should state whether figures are quoted inclusive or exclusive of VAT and whether an option to tax is in place. Leaving this unclear is one of the most common causes of disputes during the legal drafting stage.
Q What is an exclusivity or lock-out clause?
An exclusivity clause is a binding promise, usually from the seller or landlord, not to negotiate with anyone else for a set period, often four to eight weeks. It gives the buyer or tenant time to carry out due diligence and instruct solicitors without worrying that a rival will come in with a higher offer. Even when the rest of the heads of terms are not binding, an exclusivity clause can be.
Q Can heads of terms be changed once signed?
Yes, because the commercial terms in a 'subject to contract' document are not fixed. As due diligence progresses, surveys come back, or searches reveal issues, it is common for one side to ask to adjust the price, rent, or conditions. Both parties need to agree to any change. That said, repeatedly renegotiating key terms can damage trust and sometimes leads to the deal falling apart.
Q Do I need a solicitor to sign heads of terms?
You are not required to have a solicitor, but it is usually worth getting one involved before signing anything, even a 'subject to contract' document. A solicitor can check which clauses are actually binding, flag issues like security of tenure under the 1954 Act, and make sure the commercial terms are practical from a legal perspective. Catching problems at this stage is far cheaper than fixing them later.
Unsure what your heads of terms actually commit you to?
Heads of terms look informal but can lock you into exclusivity, costs, or commercial positions that are hard to walk back later. An experienced legal adviser can help you think through what the wording means based on what you describe on the call.
✓A plain-English explanation of what the terms mean for your situation
✓What to watch out for before you sign, based on what you describe
✓Practical perspective on common pitfalls in commercial property deals
✓Answers to your specific questions about binding and non-binding clauses
Personal call · For information only · Independent advisers
Written & reviewed by
Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.