Leasehold: Grant and Assignment
A lease is carved out of an existing estate; an assignment simply moves an existing lease from one hand to another. That distinction — creation versus transfer — is the spine of everything in this topic, because it determines which formalities apply, which consents are needed, and who ends up liable when something goes wrong.
Granting a lease creates a brand-new legal estate, carved out of the landlord's reversion. The landlord retains the freehold (or a superior lease) and hands the tenant a fresh, time-limited estate. Assigning a lease is entirely different: the existing tenant's estate is transferred wholesale to a new tenant. No new estate is created — the assignee simply steps into the assignor's shoes, taking the unexpired residue of the same term on the same terms.
Why does this matter to a practising solicitor? Because it changes the analysis at every subsequent stage: the formalities required to create the interest, the consents needed, the SDLT treatment, and — critically — who remains on the hook if rent goes unpaid five years later.
A grant creates a new estate out of the landlord's reversion (or, in the case of an underlease, out of the headlease). An assignment transfers an existing estate; the term itself is unchanged.
Before a lease is granted, the parties often want to lock in commercial terms while some condition — planning permission, completion of fit-out works, a superior landlord's consent — remains outstanding. That is the function of an agreement for lease: a contract under which the parties bind themselves to enter into a lease on agreed terms at a future date.
Because it is a contract for the disposition of an interest in land, an agreement for lease must satisfy section 2 of the Law of Property (Miscellaneous Provisions) Act 1989. All the terms the parties have actually agreed must appear in one document (or in each of two documents exchanged between them), and the document must be signed by or on behalf of every party. A handshake deal, or an exchange of emails that omits a term the parties genuinely intended to be bound by, will not do.
Section 2, LP(MP)A 1989: a contract for the sale or other disposition of an interest in land must be in writing, incorporate all express terms the parties have agreed, and be signed by or on behalf of each party.
An agreement for lease is frequently drafted as conditional: the obligation to grant and take the lease simply does not bite until a specified condition — satisfactory completion of pre-let works, for instance — is satisfied. This lets a developer and an anchor tenant commit early, while protecting both sides from being bound to a lease of premises that do not yet exist in the agreed form.

There is a protective wrinkle worth flagging for the exam: where the term to be granted exceeds seven years, or the agreement for lease contains an option (such as an option to renew or to break), the agreement for lease is itself treated as an estate contract. That means it can be protected by a notice on the landlord's registered title, safeguarding the tenant's contractual right against a later purchaser of the reversion.
Once the conditions in an agreement for lease are met (or where the parties go straight to grant), the lease itself must be validly created. The default rule under section 52(1) of the Law of Property Act 1925 is that a legal lease requires a deed. This is not a mere technicality — a document that purports to be a lease but fails as a deed will, at best, take effect only in equity, with all the vulnerabilities that implies against third parties.

There is a narrow but heavily examined exception. Section 54(2) of the Law of Property Act 1925 allows a lease to be created without a deed — informally, even orally — provided three conditions are all met: the lease takes effect in possession (not in the future), for a term not exceeding three years, and at the best rent reasonably obtainable without taking a premium. Miss any one of those three limbs — say, the term is for three years and one day, or a premium is charged — and the exception falls away, and a deed is required after all.
For a document to qualify as a valid deed, it must comply with section 1 of the Law of Property (Miscellaneous Provisions) Act 1989: it must be in writing, must make clear on its face that it is intended to be a deed, must be validly signed and witnessed, and must be delivered. Delivery is a distinct legal act — a signed document that has not been delivered (i.e., the signing party has not indicated an intention to be bound by it) is not yet a deed.
| Requirement | Deed needed? | Authority |
|---|---|---|
| Term > 3 years, or term ≤ 3 years but not in possession, or a premium is charged | Yes | LPA 1925, s 52(1) |
| Term ≤ 3 years, in possession, best rent, no premium | No — can be informal | LPA 1925, s 54(2) |
| Document intended as a deed | Must be in writing, stated to be a deed, signed, witnessed, and delivered | LP(MP)A 1989, s 1 |
Where a tenant under a headlease wants to grant an underlease (sublet), the tenant's solicitor's first job is to check the headlease itself for restrictions — for example, a requirement that the underlease rent match or track the headlease rent, which prevents the head tenant profiteering by underletting at a premium.
A structural rule that catches out the unwary: an underlease must expire on or before the same day as the headlease out of which it is carved. It cannot validly be granted for a term equal to, or longer than, the residue of the headlease — logically, a tenant cannot grant an interest longer than the one it holds itself.
If the headlease contains a qualified covenant restricting underletting, the headlease landlord's consent is required before the underlease can be granted, following the same reasonableness framework discussed below for assignments.
There is a chain-of-liability point that recurs in SQE1 scenarios: a subtenant under an underlease takes subject to the terms of the headlease. If the subtenant breaches an obligation that mirrors one in the headlease — say, a user covenant or a repairing obligation — that breach can simultaneously put the head tenant in breach of its own obligations to the head landlord, even though the head tenant did nothing wrong itself. Advising a head tenant on granting an underlease therefore always means advising on this pass-through exposure.
Whether the transaction is a grant or an assignment, the buyer's or tenant's solicitor must investigate title before committing. This means reviewing the landlord's registered (or unregistered) title, checking any superior leases in the chain, and raising pre-contract enquiries and searches — exactly as in a freehold purchase, but with the added layer of the lease itself and any superior interests.
The standard vehicle for this in commercial transactions is the Commercial Property Standard Enquiries (CPSEs) — a suite of pre-contract enquiries a tenant's or assignee's solicitor raises with the landlord or the assignor to extract information about the property, the lease, service charge, insurance, disputes, and more. Alongside CPSEs, commercial contracts and agreements for lease routinely incorporate the Standard Commercial Property Conditions by reference, standardising the conveyancing mechanics so the parties do not have to negotiate boilerplate afresh on every deal.
Virtually every commercial lease restricts what the tenant can do with its interest. These restrictions — covenants against alienation — come in a spectrum:
- Absolute covenant: assignment, underletting, charging, or parting with possession is prohibited outright. There is no mechanism to ask for consent; the tenant simply cannot do it.
- Qualified covenant: the tenant may not assign, underlet, charge, or part with possession without the landlord's consent — but the covenant is silent on the standard the landlord must apply.
- Fully qualified covenant: a qualified covenant that goes further and expressly states the landlord's consent is not to be unreasonably withheld.
Here is the point that trips up students who read the lease in isolation: section 19(1) of the Landlord and Tenant Act 1927 implies a proviso into every qualified covenant against assignment, underletting, charging, or parting with possession of the whole or any part of the demised premises — that consent is not to be unreasonably withheld — regardless of what the lease itself says. The statute does the work the "fully qualified" wording would otherwise do.
LTA 1927, s 19(1): in a lease containing a qualified covenant against assigning, underletting, charging, or parting with possession of the whole or part of the premises, a proviso is implied that the landlord's licence or consent is not to be unreasonably withheld — even though the lease is silent on the point.
The practical consequence is that, because of section 19(1), there is no meaningful difference between a qualified covenant and a fully qualified covenant for a lease of the whole or part of the premises — the statute levels them.
The 1996 dividing line: section 19(1A)
The Landlord and Tenant (Covenants) Act 1995 inserted section 19(1A) into the 1927 Act, and it applies only to new tenancies — leases granted on or after 1 January 1996. Section 19(1A) allows the landlord and tenant of a new tenancy to specify, in the lease itself (or in an agreement collateral to it), the circumstances in which the landlord may withhold consent to assign, or the conditions subject to which consent may be given.
Where the lease does specify such circumstances or conditions, the landlord is not treated as acting unreasonably by relying on them. This is a significant drafting opportunity for landlords of new tenancies: rather than relying on the open-textured "reasonableness" standard under section 19(1), they can build certainty into the lease.
The condition most commonly specified under section 19(1A) — and the one this topic keeps returning to — is a requirement that the assignee's guarantor, or the outgoing tenant itself, enter into an authorised guarantee agreement (AGA) as a precondition of consent to assign. This is the drafting hook that connects the alienation covenant to the AGA regime discussed below.
A fully qualified (or section 19(1)-qualified) covenant only protects a tenant in practice if the landlord actually deals with applications promptly. The Landlord and Tenant Act 1988 imposes a free-standing statutory duty: where a tenant applies in writing for consent to assign, underlet, charge, or part with possession under a qualified covenant, the landlord must give consent within a reasonable time, unless it is reasonable not to do so.
The Act also imposes a procedural obligation: the landlord must serve written notice on the tenant of its decision, and if consent is refused or granted subject to conditions, the notice must give reasons.
A landlord who breaches the 1988 Act duty — by unreasonably delaying, refusing, or failing to give proper reasons — can be liable to the tenant in damages for breach of statutory duty. This is a tort-like remedy sitting alongside (not instead of) any argument that consent was unreasonably withheld.
What makes withholding consent "reasonable"?
The touchstone, developed through case law, is whether the landlord's decision (a) relates to the landlord and tenant relationship and the protection of a legitimate interest connected to the property or the lease, and (b) is not disproportionate to the detriment the refusal causes the tenant. A landlord cannot refuse consent to extract some unrelated commercial advantage, such as forcing a rent renegotiation.
Two recurring, exam-favourite examples of reasonable refusal and reasonable conditions:
- A landlord may reasonably refuse consent where the proposed assignee's financial standing or references raise a genuine concern about its ability to pay rent or perform the tenant covenants. Poor accounts, no trading history, or an unsatisfactory bank reference are classic triggers.
- A landlord may reasonably impose conditions on granting consent — for example, requiring the tenant to pay the landlord's reasonable legal and surveyor's costs incurred in dealing with the application. This is standard practice and rarely itself objectionable.
Where consent is given, it is typically recorded in a licence to assign — usually executed as a deed — which documents the landlord's consent and, critically, usually contains direct covenants by the assignee to the landlord to observe and perform the tenant covenants in the lease. This direct covenant supplements (it does not replace) whatever covenants pass to the assignee automatically by operation of the assignment itself, giving the landlord a clean, express contractual claim against the incoming tenant.
This is the conceptual heart of the topic, and the exam consistently tests the 1996 dividing line.
Before 1 January 1996 (an "old" tenancy), the common law doctrine of privity of contract governs. The original tenant who signed the lease remains contractually liable for the performance of the tenant covenants for the whole of the contractual term — even after assigning the lease away, and even though it is now a stranger to the property. If a later assignee defaults on rent, the landlord can go back and sue the original tenant (or any intermediate assignee who gave a direct covenant), subject to that tenant's own right of indemnity against whoever is actually in breach.
On or after 1 January 1996, a lease is a "new tenancy" governed by the Landlord and Tenant (Covenants) Act 1995. The privity-of-contract regime is replaced by a statutory release-and-transfer scheme:
- Section 5, LTCA 1995: on a lawful assignment of a new tenancy, the assigning tenant is automatically released from the tenant covenants of the lease, from the date of the assignment — privity of contract simply stops biting.
- Section 3, LTCA 1995: the benefit and burden of the landlord and tenant covenants pass automatically to the assignee on assignment, under the doctrine of privity of estate — the assignee becomes the party bound going forward.
Old tenancy (pre-1996): original tenant stays liable for the whole term under privity of contract, however many times the lease is assigned on. New tenancy (1996 onward): the assigning tenant is automatically released under s 5 LTCA 1995; liability passes to the assignee under s 3 LTCA 1995 (privity of estate) — unless an AGA is in play.
Automatic release sounds like good news for outgoing tenants of new tenancies — and it is, subject to one major qualification landlords routinely insist upon: the authorised guarantee agreement.
An AGA is an agreement under which an outgoing tenant of a new tenancy guarantees the performance of the tenant covenants by the person to whom it is assigning the lease — in effect, the departing tenant underwrites its immediate successor even though the general statutory scheme would otherwise release it entirely.
Section 16, LTCA 1995 permits a tenant of a new tenancy to enter into an AGA, but only where the landlord's requirement for one is lawfully imposed as a condition of consent to assign. A requirement is lawfully imposed if it is either required by a condition written into the lease itself, or satisfies an agreement between landlord and tenant under section 19(1A) of the LTA 1927 discussed above — which is precisely why that provision and the AGA regime are taught together.
Three features of the AGA regime are consistently tested:
- Single-link guarantee. An AGA can only guarantee performance by the immediate assignee — it cannot reach forward to guarantee any subsequent assignee further down the chain. The outgoing tenant's exposure is capped at one assignment's worth of risk.
- Self-terminating on onward assignment. The AGA ceases to have effect once the immediate assignee to whom it relates itself assigns the lease onward — other than by an "excluded assignment," such as an assignment by operation of law (e.g., on death or insolvency, where the estate or trustee automatically becomes the tenant). At that point, liability shifts to a fresh AGA (if the landlord requires one from the next assigning tenant) rather than reaching back to the original AGA guarantor.
- Guarantor-like liability, including "new lease" obligations. The outgoing tenant's liability under an AGA is treated broadly like that of a guarantor, and commonly includes an obligation to take a new lease of the premises if the assigned lease is subsequently disclaimed (for example, following the assignee's insolvency and a liquidator's disclaimer). This protects the landlord from being left with a disclaimed lease and no one liable for it.
A further wrinkle worth knowing: a guarantor of the original tenant may itself be asked to guarantee that tenant's obligations under an AGA — sometimes described as a "guarantee of an AGA." This layers a second guarantor behind the outgoing tenant's own guarantee obligation.
Finally, the statutory scheme is protected against contractual erosion: section 25, LTCA 1995 voids any agreement that purports to exclude or modify the effect of the tenant release provisions (principally section 5), except to the extent expressly permitted for AGAs under section 16. Landlords cannot draft around automatic release by some other mechanism; the AGA route is the only sanctioned carve-out.
Before an assignment completes, the assignor's solicitor deduces title to the lease — supplying the assignee with a copy of the lease, any headlease, and any relevant licences to assign, so the assignee's solicitor can confirm the chain of title is sound. The assignee's solicitor then carries out due diligence: raising CPSEs, running the usual property searches, and reviewing what consent requirements will need to be satisfied.
An assignment of a lease is completed by execution of a deed — the transfer of an existing legal estate is itself a disposition caught by the section 52 deed requirement, just as much as the original grant was. For an assignment of a registered leasehold estate, this is achieved using the appropriate Land Registry transfer form — typically form TR1 for a transfer of the whole of a registered title.

Registration is not a mere administrative afterthought — it is what makes the legal transfer effective. Under section 27 of the Land Registration Act 2002, a transfer of a registered leasehold estate does not operate at law until the transfer is completed by registration at HM Land Registry. Until registration happens, the assignee holds only an equitable interest, while the assignor remains the registered proprietor and, on paper, the legal owner.

The same seven-year threshold that governs whether a lease needs its own title recurs here on the grant side:
- Section 4, LRA 2002: the grant of a lease for a term of more than seven years requires first registration at HM Land Registry.
- Section 27, LRA 2002: the grant, out of an already-registered title, of a lease for a term of more than seven years must be completed by registration to take effect at law.
- A lease granted for seven years or less generally does not need its own registered title — subject to exceptions, such as a lease granted to take effect in possession more than three months after the date of grant, which triggers registration regardless of the term length.
Stamp Duty Land Tax treats grant and assignment differently, which follows logically from the grant-versus-assignment distinction at the start of this note:
- On the grant of a lease, SDLT is charged by reference to any premium paid and the net present value (NPV) of the rent payable over the term — because the rent itself, as a new economic burden, is being created for the first time.
- On the assignment of an existing lease, SDLT is charged on the consideration paid for the assignment, not on the rent — because the rent element was already charged to SDLT at the original grant, and taxing it again would be double-counting.
A land transaction return must generally be filed with HMRC — with any SDLT due paid at the same time — within fourteen days of the effective date of a notifiable land transaction, which includes the grant or assignment of a lease.

In Wales, the equivalent tax is Land Transaction Tax (LTT), which applies instead of SDLT to the grant or assignment of a lease of land situated in Wales — a jurisdictional point worth flagging in any scenario involving Welsh property.

Several practical points recur in SQE1 client scenarios and reward careful sequencing:
- A tenant seeking to assign should apply for the landlord's consent before exchanging contracts to sell the lease. If consent has not yet been obtained, the sale contract is typically drafted conditional on the landlord's consent to assign being obtained before completion — protecting the seller-tenant from being contractually bound to complete a sale it cannot lawfully carry out.
- Where the lease requires a rent deposit deed, the landlord may reasonably require the incoming assignee to enter into a new rent deposit deed as a condition of granting consent — the landlord is entitled to the same security from the new tenant that it had from the old one.
- Where a lease contains a break clause, any condition attached to it — such as giving vacant possession, or having paid all rent up to the break date — must be strictly complied with for the break to operate. Courts do not apply a "substantial compliance" standard here: a tenant one day late on rent, or leaving a chattel behind, can lose the right to break altogether. This is a trap that recurs across property and dispute-resolution scenarios alike.
A grant/assignment scenario question is really testing whether you can correctly sequence four layers: (1) is this a grant or an assignment, and does it satisfy the relevant formalities (deed, or the narrow section 54(2) exception)? (2) does the lease restrict alienation, and if so, is the covenant absolute, qualified, or fully qualified, remembering section 19(1) collapses that last distinction? (3) is this an old tenancy or a new tenancy, because that single date — 1 January 1996 — determines whether privity of contract or the LTCA 1995 release-and-AGA regime applies; and (4) have the mechanics — CPSEs, licence to assign, deed of transfer, registration, and SDLT — actually been completed in the right order, with consent secured before completion is allowed to bite. Master that sequencing, and the dense statutory detail in this topic becomes a checklist rather than a memory test.