Licence To Alter In The UK: What Commercial Tenants Should Know

If you’re fitting out a shop, cafe, studio or office, there’s a good chance your lease says you can’t change the premises without your landlord’s consent. That consent is usually documented in a “licence to alter”.

Getting this right matters. The wrong works (or the right works done without consent) can breach your lease, trigger reinstatement costs, delay opening and even risk forfeiture. The good news? With a clear plan and the correct legal steps, you can secure the permissions you need and get your build moving.

In this guide, we’ll explain what a licence to alter is, when you need one, the legal rules around landlord consent, and the key conditions and documents to expect. We’ll also cover useful compliance checks and how to negotiate fair terms so your project stays on time and budget.

What Is A Licence To Alter And When Do You Need One?

A licence to alter is a formal written consent (usually a deed) from your landlord allowing specific works to your leased premises. It records what you’re allowed to do, the standards to follow, and any obligations such as reinstating the space at the end of the lease.

Most commercial leases prohibit alterations unless the landlord consents. Often there’s a distinction between:

• Structural alterations – typically prohibited or heavily restricted.
• Non-structural alterations – often allowed with landlord consent.
• Minor, non-material changes (e.g. internal decorations) – sometimes allowed without consent, but many modern leases still require approval for anything beyond basic redecoration.

As a rule of thumb, assume you’ll need a licence to alter for any works that change the building fabric, services or layout (for example, new partitions, plumbing, extraction, signage, plant, or external changes). Decorative works (like repainting) might not require a licence, but check your lease wording carefully before you start.

If you’re unsure how your lease treats alterations, a quick Commercial Lease Review before you plan or instruct contractors can save costly rework later.

What Does UK Law Say About Landlord Consent?

Under the Landlord and Tenant Act 1927, where a lease requires the landlord’s consent to alterations and doesn’t absolutely prohibit them, the landlord must not unreasonably withhold consent to “improvements.” In practice, most commercial leases use “qualified covenants” (no alterations without consent), and the landlord’s decision must be reasonable and made within a reasonable time.

Reasonableness doesn’t mean the landlord has to say “yes” to everything. They can impose sensible conditions to protect the property and other tenants, such as:

• Carrying out works to a proper, safe standard and in compliance with law.
• Using competent and insured contractors.
• Paying the landlord’s reasonable legal and surveyor fees.
• Providing drawings, method statements and risk assessments up front.
• Reinstating at lease end, if required.

The exact position depends on your lease wording and the nature of your works. If consent is refused or conditions seem excessive, it’s worth getting advice quickly. In some scenarios, the law supports a challenge if the landlord’s stance isn’t reasonable, but you’ll want a pragmatic route that keeps your timeline intact.

What Will A Licence To Alter Typically Include?

Expect the licence (usually a deed signed by you and the landlord, and sometimes any superior landlord) to capture:

1) Approved Scope And Drawings

The licence will annex the approved drawings, specification and method statements, clearly defining what you can do. If you later want to change the scope, you’ll usually need further consent.

2) Conditions On How You Carry Out The Works

• Working hours, noise and neighbour protections.
• Insurance levels and evidence from you and your contractors.
• Compliance with Building Regulations, fire safety and other legal requirements.
• Any required landlord inspections or sign-offs during the works.

3) Compliance And Approvals

The licence will require you to obtain and provide copies of any third-party permissions before starting, such as planning permission, listed building consent, landlord’s mortgagee consent, freeholder/superior landlord consent or utilities approvals.

4) Reinstatement And Dilapidations

Many licences require you to reinstate the premises to their prior condition at lease end (unless the landlord elects to keep certain improvements). This is separate from general dilapidations. If you’re investing heavily in a fit-out, it’s worth negotiating the extent of any reinstatement obligation up front.

5) Fees And Security

You’ll typically cover the landlord’s reasonable legal and surveyor costs. For higher-risk works, the landlord may require a works deposit or bond as security for reinstatement or making good damage caused by the works.

6) Handover And As-Built Records

On completion, the licence may require as-built drawings, commissioning certificates, warranties, and compliance sign-offs. Keeping a neat completion pack helps when you come to assign the lease or negotiate end-of-term dilapidations.

Because the licence is usually a deed, make sure you follow correct signing formalities. If you’re not familiar with deed execution requirements, this short guide to Executing Contracts and Deeds is a helpful reference.

What Information Should You Provide To Secure Consent Quickly?

A complete, professional proposal speeds up approvals. Landlords often instruct a building surveyor to review your pack, so think like a surveyor and answer their likely questions up front. Your works pack might include:

• Scope of works summary, timings and any phasing plan.
• Scaled drawings and specifications (existing and proposed).
• Method statements and RAMS (risk assessments and method statements).
• Structural calculations for any load-bearing changes or penetrations.
• M&E details (HVAC, plumbing, extraction, electrical, fire alarm interfaces).
• Planning and Building Regulations position (including correspondence).
• Contractor competence and insurances, including public liability and professional indemnity if applicable.
• Neighbour/centre management coordination plan where relevant.

Clear documentation reduces back-and-forth and helps your landlord be comfortable that the works won’t damage the property or disrupt other occupiers.

Which Laws And Permissions Should You Check Before You Build?

Even with landlord consent, you still need to comply with public law requirements. Common checks include:

Planning Permission And Use

Alterations that materially affect the building’s external appearance usually need planning permission. Internal works might be permitted development, but don’t assume. If you’re changing use class (for example, office to cafe), planning use may also be relevant. Sector-specific fit-outs (e.g. kitchen extraction for hospitality) often trigger planning considerations. If you’re taking on a new hospitality site, this explainer on a Cafe or Restaurant Lease outlines additional points for operators.

Building Regulations

The Building Regulations 2010 address structural integrity, fire safety, accessibility, ventilation, drainage and more. Many commercial fit-outs require Building Control approval and completion certificates.

Fire Safety

Under the Regulatory Reform (Fire Safety) Order 2005 you must undertake a fire risk assessment and ensure the premises remain safe during and after works (e.g. alarm interfaces, detectors, signage, escape routes).

Listed Buildings And Conservation Areas

Listed building consent may be required for any works affecting the character of a listed building, including internal features. Conservation area status can also affect external changes like signage or shopfronts.

Party Wall Etc. Act 1996

Works affecting party walls, boundaries or adjacent structures often require notices, consents and surveyor awards. Failing to follow the process can delay you and sour relations with neighbours.

Health And Safety/CDM

The Construction (Design and Management) Regulations 2015 apply to fit-outs. You’ll need the right dutyholders, construction phase plan and health and safety file where required.

In short: the lease gives you private law permission, but public law approvals still matter. Build them into your programme and budget.

Negotiation Tips: Securing A Fair, Workable Licence To Alter

Your goal is a licence that protects the landlord’s asset without creating unnecessary cost or delay. Practical points to consider:

• Clarity beats ambiguity. Make sure the approved scope, drawings and specifications are complete, so you’re not restricted mid-project.
• Reasonable timescales. Include realistic review periods for submittals and inspections so your programme isn’t stalled by silence.
• Reinstatement. Try to limit reinstatement where improvements add value or are integral to the permitted use. Alternatively, seek a landlord’s election clause at lease end.
• Coordination. In multi-let buildings or centres, agree a clear protocol with the building manager for deliveries, hoardings and noisy works.
• Costs. Landlord legal/surveyor fees should be “reasonable” and proportionate to the scope. Ask for estimates up front and cost caps where possible.
• Security. If a works deposit or bond is required, tie release to objective completion criteria and reasonable timescales.

If your lease is light on alterations wording or you’re planning material changes to the premises layout, sometimes it’s smarter to vary the lease clause itself rather than rely on one-off consent. In those cases, a Deed of Variation may be appropriate to permanently amend the alteration regime.

Common Pitfalls That Delay Fit-Outs (And How To Avoid Them)

• Starting works without consent. This can create an immediate breach and damage trust. Always secure the signed licence before works commence on site.
• Incomplete documentation. Missing drawings, RAMS or insurance details slow down approvals. Submit a complete, professional pack at the outset.
• Skipping approvals. Planning, Building Control and party wall requirements can’t be solved retrospectively. Confirm what’s needed early.
• Underestimating landlord/surveyor fees. Factor these into your budget and get estimates up front.
• Open-ended reinstatement obligations. Nail down what must be removed at lease end and document it clearly.
• Poor contractor coordination. Agree delivery routes, hours and permits with centre management to avoid stoppages and fines.

If you’re negotiating a new lease, build in a sensible alterations clause from day one. It’s much easier to fit out quickly when the lease already sets out a clear, reasonable consent process. If you’re reviewing heads of terms or a draft, consider a dedicated Commercial Lease Review or, for consumer-facing spaces, a targeted Retail Lease Review.

Practical Steps: From Idea To Signed Licence To Alter

1) Check Your Lease

Identify if alterations are allowed, what requires consent, any absolute prohibitions, timescales, required documents and whether superior landlord consent is needed. If the lease is silent or unclear, get advice early.

2) Assemble Your Works Pack

Prepare drawings, specs, RAMS, programme, insurances and a summary scope. Flag any planning/Building Regulations position and party wall issues.

3) Engage With The Landlord

Submit your pack and request formal consent. Expect the landlord to instruct a surveyor and lawyer. Ask for estimated fees and a target timetable.

4) Agree The Licence

Work through conditions and ensure the licence reflects the agreed scope, standards and realistic programme. Ensure correct execution since the licence will usually be a deed.

5) Deliver The Works

Follow the approved plans and licence conditions, coordinate inspections, and keep records of changes. On completion, provide as-built drawings and compliance certificates.

6) Keep Future Exits In Mind

Well-documented alterations make it easier to sell your business or Assigning a Lease to an incoming tenant. Buyers and their lenders will want to see that key works were lawfully approved and certified.

What If You Don’t Have A Formal Lease Or You’re On A Rolling Arrangement?

Sometimes small businesses occupy under informal arrangements or a “holding over” tenancy after the original term ends. Your position and rights differ if you don’t have a current, written lease. Before committing to works, check your commercial tenant rights and consider whether it’s sensible to invest in fit-out without a clear term.

If you’re on a periodic tenancy, alterations may be risky unless the landlord agrees and extends the term. Timings also matter for notice and negotiations, so it’s worth understanding rolling contract notice periods before you spend on irreversible changes.

DIY Templates Vs Tailored Documents

It’s tempting to “borrow” a licence to alter template and tweak it. The risk is that a generic document won’t reflect your specific lease, building rules, scope of work or compliance context. Worse, it could miss key protections (for example, limiting reinstatement or tying landlord approvals to clear timescales).

Given the licence will usually be a deed, the approval package often interacts with Building Regulations, planning and sometimes party wall matters, and the conditions can affect your operational fit-out, it’s wise to have it tailored. If your landlord proposes a deed that goes beyond reasonable protections, a calm redraft can get things back to the commercial middle ground.

Key Takeaways

• A licence to alter is the landlord’s formal consent to your fit-out or changes; most commercial leases require it for anything beyond basic redecoration.
• Under UK law, landlords generally can’t unreasonably withhold consent to qualified alteration requests, but they can impose reasonable conditions to protect the building.
• Provide a complete works pack (drawings, specs, RAMS, insurances and programme) to speed up approvals and keep landlord costs proportionate.
• Don’t forget public law approvals: planning, Building Regulations, fire safety and party wall processes may all apply to commercial fit-outs.
• Negotiate practical conditions on reinstatement, review timescales, landlord fees and security, and ensure the licence is correctly executed as a deed.
• If your lease terms are unclear or you’re on a rolling tenancy, sense-check your position before investing in irreversible works.
• Getting your lease and licence documents reviewed up front will protect your timeline, budget and exit options when you later assign or renew.

If you’d like help reviewing your lease or negotiating a licence to alter, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.