The lease still has three years to run, but the business no longer needs the space. Hybrid working has changed the office requirement, a merger has duplicated premises, trade has weakened, the operation is relocating or the company has simply outgrown the building.
Whatever caused the problem, the question is rarely just whether the business can leave physically. It is whether it can leave the premises without continuing to carry the financial and legal exposure behind them.
A break clause, surrender, assignment and subletting can all produce an apparent “exit”, but they do very different things. One may bring the lease to an end. Another transfers it. Another leaves the existing tenant completely responsible to the landlord while somebody else occupies the space.
That distinction should drive the strategy.
The legal discussion below principally concerns commercial leases in England and Wales. Lease law differs in Scotland and Northern Ireland, and the wording of the individual lease remains decisive.
| Route | What happens to the lease? | Does the landlord normally need to cooperate? | Can the outgoing tenant still carry liability? |
|---|---|---|---|
| Break clause | Lease ends if the break is validly exercised | Not usually as a negotiated consent, but the contractual procedure must be followed | Normally not for future rent after the effective break, although existing liabilities can remain |
| Surrender | Lease ends by agreement | Yes | Future lease liability normally ends on a valid surrender, but accrued rent, dilapidations, reinstatement and other existing liabilities depend on the surrender terms |
| Assignment | Existing lease transfers to a new tenant | Frequently yes, depending on the lease | Potentially, particularly through an authorised guarantee agreement or under older leases |
| Subletting | Head lease continues; another occupier takes an underlease | Frequently yes, depending on the lease | Yes — the original tenant remains liable to its own landlord |
That is why the cheapest-looking option and the cleanest exit are not always the same thing.
A break right is powerful only if it can actually be exercised
If the lease contains a tenant break that can be used at the right time, it may provide the cleanest route because the landlord does not have to be persuaded to release the tenant as part of a new bargain. The right already exists in the contract.
But the wording matters.
The tenant needs to know the exact break date or window, the required notice period, who must receive the notice, how it must be served and what conditions have to be satisfied before the lease will actually determine.
Break notices are not a good place for approximate compliance. RICS guidance on commercial break clauses notes that the provisions dealing with how, when, where and on whom a break notice is served need to be followed carefully. Conditions attached to the break can create a second layer of risk.
A well-drafted modern tenant break may be relatively straightforward. Older or more landlord-friendly leases can impose wider conditions involving rent, occupation, subtenants, compliance with covenants or the state in which the premises are returned.
That creates an important distinction between serving the notice and satisfying the break conditions. The notice can be served correctly and the break can still fail if a required condition is not met.
Timing therefore matters well before the notice deadline. If the premises have to be cleared, occupational arrangements unwound, rent reconciled or subtenants removed, the tenant needs enough time to establish what compliance will actually require.
The safest assumption is not that a break will work because everybody knows the tenant intends to leave. It is that the specific wording needs to be tested against the exact steps the business plans to take.
Surrender is a negotiation, not a right to hand back the keys
Where there is no usable break, a surrender can provide a genuinely clean exit because landlord and tenant agree to bring the lease to an end.
The attraction is obvious. There is no need to locate a replacement tenant and, once the surrender and associated liabilities are properly resolved, the outgoing business can usually remove the property from its future occupational commitments.
The difficulty is equally obvious: the landlord has to want to do the deal.
That makes surrender much more commercial than mechanical. If the passing rent is comfortably above what the landlord could achieve on a reletting, releasing the tenant may destroy valuable income. If the building is difficult to let, the landlord may see little reason to exchange a solvent covenant for an empty unit. In those circumstances, a tenant may need to pay a surrender premium or make some other economic concession to compensate the landlord.
The position can reverse. A landlord planning redevelopment, refurbishment or an advantageous reletting may actively want vacant possession and can have its own reasons for paying for, or otherwise incentivising, an early surrender.
The settlement also needs to deal with more than future rent. Dilapidations, reinstatement, arrears, service charge, insurance, rent deposits, guarantees and any outstanding works may all need resolving. A valid surrender can end the tenant’s liability for future performance of the lease, but it does not automatically wipe away liabilities that have already accrued or issues the parties have agreed to settle separately.
And simply returning the keys should never be treated as a reliable substitute for documenting what has happened. HM Land Registry’s current guidance on determination of leases distinguishes between surrender by deed and surrender by operation of law, and makes clear that surrender by operation of law requires conduct by both parties that is inconsistent with the lease continuing. A tenant acting alone does not simply extinguish its lease because it vacates.
For an occupier seeking certainty, the commercial objective is not merely to get the landlord to take the premises back. It is to know exactly what has ended and what, if anything, survives.
Assignment can remove the premises without necessarily removing every exposure
Assignment takes a different approach. Instead of ending the lease, the tenant transfers it to an incoming occupier who becomes the tenant for the remainder of the term.
Where the property is marketable and the existing lease terms remain attractive, that can be a more realistic route than paying the landlord to accept a surrender. It may also suit a landlord that is willing to change tenant but has no reason to give up the existing lease structure.
The starting point is the alienation clause in the lease. Some leases prohibit assignment altogether; many permit assignment of the whole with landlord’s consent; the circumstances and conditions under which consent may be given or refused depend on the drafting and the relevant statutory framework.
Where a covenant against assignment or underletting is qualified so that consent is not to be unreasonably withheld, the Landlord and Tenant Act 1988 can impose duties concerning the landlord’s handling of an application for consent. That does not mean every proposed assignee must be accepted. Covenant strength, compliance with agreed lease conditions and other relevant circumstances can still matter.
The outgoing tenant also needs to understand what happens to its liability after completion of the assignment.
For many leases granted on or after 1 January 1996, the Landlord and Tenant (Covenants) Act 1995 fundamentally changed the old position by providing for tenants to be released from relevant tenant covenants on assignment. But that release can be accompanied by an authorised guarantee agreement, or AGA, under which the outgoing tenant guarantees the immediate assignee’s performance in circumstances permitted by the legislation.
The practical consequence is important. Assignment may remove the business from occupation and transfer the lease, while still leaving a contingent exposure if the assignee later defaults.
Older leases require particular care because the liability regime for leases predating the 1995 Act can differ materially. Nobody considering an assignment should therefore assume that “the lease has been transferred” necessarily means “our liability has disappeared”.
Subletting solves an occupation problem more readily than a liability problem
Subletting is often described alongside assignment, but commercially it is a very different solution.
The original tenant remains the tenant under the head lease. It continues to owe rent and comply with the lease covenants. A subtenant then occupies all or part of the property under a separate underlease and pays rent to the original tenant.
That can be useful where the problem is surplus space rather than a desire to sever every connection with the property. An office occupier that still needs one floor but no longer needs three may have little interest in assigning the entire lease. Underletting two floors could reduce the net occupational cost while preserving the premises the business still needs.
But the head tenant remains between the landlord and the subtenant.
If the subtenant stops paying, the landlord still expects the head tenant to pay the head rent. If the subtenant breaches its underlease, the head tenant has to manage that relationship while still complying with its own obligations upstairs. There can also be mismatches between the rent and liabilities under the two leases.
Whether underletting is permitted, whether it can involve part of the premises and what terms the underlease must contain will depend on the head lease. Landlord consent may also be required.
Subletting can therefore be an effective cost-recovery strategy without being a true release from the property commitment. That is not a weakness if the business understands what it is buying. It becomes a problem only when underletting is treated as though somebody else taking occupation has transferred the original tenant’s liability as well.
Releasing part of the premises can require a different solution altogether
Not every property problem is an exit problem.
A business may still want its location but need much less space. In that situation, the question becomes whether the lease and physical layout allow the occupational commitment to be reduced rather than terminated.
Underletting part is one possibility where the lease allows it and the space can function independently. A negotiated surrender of part can be cleaner because the landlord takes the unwanted area back and the tenant’s demise and rent are formally reduced. In other circumstances, landlord and tenant may negotiate a wider lease variation.
Those options depend heavily on the building.
Splitting an office floor may require separate access, fire arrangements, services, metering and security. Dividing an industrial unit may interfere with yards, loading, power supply or circulation. A subdivision that appears commercially straightforward can therefore require physical works and legal rights before it becomes lettable.
This is another reason to avoid beginning with the label of the transaction. The business should define the operational outcome it needs first — complete exit, partial reduction, short-term cost recovery or permanent release — and then determine which legal structure can actually achieve it.
Selling the business and exiting the lease are separate transactions
Selling the trading business does not automatically dispose of its lease.
A purchaser may buy the company’s assets, goodwill, stock, contracts and trading operation without automatically becoming the tenant under the commercial lease. The property arrangements need to be dealt with separately through whatever structure the lease and wider transaction require.
If the existing corporate tenant itself is being sold through a share sale, the legal tenant may technically remain the same company, although change-of-control provisions, guarantees, financing arrangements and landlord concerns can still need consideration. If the business or assets are being transferred to a different legal entity, an assignment, new lease or another agreed property arrangement may be needed.
Personal guarantees require particular attention. A director who guaranteed the existing lease should not assume that selling the trading business automatically releases that guarantee.
For anyone buying or selling an operating business, the premises therefore belong in the transaction planning from the beginning. The property cannot safely be treated as something that will simply follow the commercial deal.
The landlord’s economics often determine which exit becomes realistic
Before approaching the landlord, it is worth understanding what the landlord is being asked to give up — and what it might gain.
Suppose the tenant is paying £120,000 a year for a unit that would probably relet today for £90,000. A surrender asks the landlord to exchange £120,000 of contracted income for an empty building and the costs and uncertainty of reletting it at potentially less rent. Unless there is another strategic reason for wanting possession, the tenant should expect resistance or a meaningful price for that release.
Reverse the numbers and the conversation changes. If the existing rent is £90,000 but comparable premises are letting at £120,000, an early surrender could create an opportunity for the landlord rather than simply a loss.
Lease length matters. So does the financial standing of the existing tenant, the quality of a proposed assignee, current occupational demand, forthcoming capex and any redevelopment ambitions.
That does not mean every landlord will behave exactly according to a spreadsheet. It means the tenant improves its negotiating position by understanding the landlord’s alternative.
The question is not merely “will the landlord let us out?” It is “what economic outcome does the landlord get if it does?”
Compare the full cost of each route, not just the obvious payment
Early exit usually has a price even where there is no surrender premium.
A break may require reinstatement works, dilapidations expenditure and professional advice before it can safely be exercised. A surrender may involve a negotiated payment, repair settlement and legal costs. An assignment can require marketing, agency fees, consent documentation and potentially an AGA. A subletting strategy can introduce incentives, fit-out expenditure, management costs and the ongoing risk of a rent shortfall between the underlease and the head lease.
Timing has a cost too.
A nominally cheaper assignment that takes nine months to complete while the business pays rent on two buildings may prove more expensive than a surrender requiring an upfront payment but delivering immediate certainty. Equally, paying a large surrender premium makes little sense if a strong assignee is likely to take the lease on acceptable terms within a short period.
The right comparison is therefore not simply “which route has the smallest fee?” It is the total cost and residual liability of reaching the desired position.
Start before the premises become urgent
A business that expects to need an exit in twelve months is in a much stronger position than one discovering the problem six weeks before the new premises complete.
Break notices may have long lead times. An assignment requires a credible incoming tenant. Underletting requires marketing and documentation. A surrender usually requires a negotiation in which neither party is obliged to accept the other’s opening position.
Starting early also preserves competition between the options.
A tenant can explore surrender while marketing an assignment. It can investigate partial underletting while checking whether the landlord would accept a regear or surrender of part. The mere existence of another workable route can improve a negotiation because the business is not dependent on a single outcome.
Waiting until the property becomes an emergency removes exactly that leverage.
The best exit is the one that removes the problem the business actually has
There is no universal order in which every tenant should pursue these routes.
A usable break can be extremely valuable because it offers a contractual route to determination without negotiating a fresh release. But if the next break date is two years away, it may not solve today’s problem.
A surrender can deliver the cleanest negotiated exit, but only if the landlord is willing and the price of release makes commercial sense.
Assignment may preserve more value where the premises and lease remain attractive to another occupier, but the outgoing tenant needs to understand any continuing guarantee exposure.
Subletting can turn surplus space into income and may be particularly useful where only part of the premises is redundant, but it leaves the head-lease liability where it was.
The decision therefore begins with a different question from “which legal option is best?” Is the business trying to remove occupation, reduce cost, eliminate future liability, dispose of only part of the space, or achieve certainty by a particular date? Once that is clear, the lease, the property market and the landlord’s own economics determine which route is genuinely available.
The mistake is not choosing surrender instead of assignment, or subletting instead of waiting for a break. It is confusing physical departure from the premises with legal and financial release from the lease.
This article provides general commercial-property information and does not constitute legal, valuation, tax, surveying or financial advice. The legal discussion principally concerns England and Wales; commercial lease law differs in Scotland and Northern Ireland. Break rights, surrender, assignment, underletting, guarantees and continuing lease liabilities depend on the particular lease, its date and the circumstances of the transaction. Appropriate professional advice should be obtained before an exit strategy or formal notice is pursued.
