Licence For Alterations: What Business Tenants Need Before Making Changes

If you’re renting business premises, it’s only natural to want to make the space work for you. Maybe you want to reconfigure the layout, add signage, install extraction for a kitchen, or fit out a treatment room. But if you jump into building work without the right permissions, you can end up in a dispute with your landlord, face reinstatement costs, or risk breaching your lease.

This is where a licence for alterations usually comes in. It’s one of the most common legal documents small business tenants need when they want to change a leased property.

Below, we’ll break down what a licence for alterations is, when you need one, what it typically includes, and how to get it agreed without derailing your timelines (or your budget).

What Is A Licence For Alterations (And Why Does It Matter)?

A licence for alterations (sometimes written as license for alterations or licence for alteration) is a formal written agreement where your landlord gives you permission to carry out specific works at the premises.

In plain English: it’s the document that turns your landlord’s “yes” into legally enforceable permission - and sets out the conditions you must follow.

Why Your Lease Usually Requires One

Most commercial leases contain an “alterations” clause that:

• prohibits alterations completely (rare, but it happens), or
• allows alterations only with the landlord’s consent (very common), often requiring that consent to be in writing.

That written consent is typically documented as a licence for alterations, especially where the works are more than minor cosmetic changes.

What Can Go Wrong If You Don’t Get A Licence?

It can be tempting to treat this as paperwork you can sort out later. But doing works without permission can create real risk, including:

• breach of lease (which could lead to enforcement action and, in more serious cases, the landlord taking steps to end the lease)
• an obligation to reinstate the premises at your cost (sometimes immediately, not just at the end of the lease)
• problems when you assign the lease or sell the business because your buyer’s solicitor will ask for evidence that alterations were authorised
• issues with insurance if unapproved works contribute to damage or safety problems

As a general rule: if the works change the property in any meaningful way, it’s safer to assume you need landlord approval and check your lease before you instruct contractors.

Do You Actually Need A Licence For Alterations? Common Examples

Whether you need a licence for alterations depends on two things:

1. what your lease says about alterations and consent; and
2. what kind of works you’re planning (minor, non-structural, structural, mechanical/electrical, external works, and so on).

If you’re unsure what your lease allows, it’s worth getting a Commercial Lease Review before you commit to a fit-out plan.

Examples Of Works That Often Need A Licence

• Structural changes (removing walls, creating openings, installing mezzanines)
• Mechanical and electrical installations (extraction systems, air conditioning, new consumer units)
• Plumbing works (new sinks, bathroom additions, drainage changes)
• External changes (new shopfront, shutters, signage, vents, satellite dishes)
• Flooring that affects the structure (for example, heavy tiling, screeding, or anything impacting load-bearing)

What About Minor Works?

Some leases let you do “non-structural” alterations with consent not to be unreasonably withheld, and might allow truly minor works without consent (for example, painting in neutral colours). Other leases are stricter and require consent even for non-structural changes.

Even if you’re only doing internal works, don’t assume you’re in the clear. For example, drilling through walls for cabling or installing heavy equipment can still matter, particularly in multi-tenant buildings where there are shared services and strict building rules.

If You’re Not On A Lease, The Rules Can Still Apply

Some small businesses occupy premises under a shorter-form arrangement, such as a licence to occupy, concession, or pop-up agreement. Alterations can still be restricted, and the owner can still require written permission.

If your occupancy is more informal, you may want to check whether you’re operating under a Licence to Occupy and what it says about changes to the premises.

How The Licence For Alterations Process Works (Step By Step)

The process can feel a bit slow the first time you do it - but once you understand the steps, it’s much easier to plan around.

1) Check Your Lease And Any Building Rules

Start with the alterations clause in your lease. Key things to look for include:

• whether alterations are allowed at all
• whether landlord consent is required
• if consent must be in writing
• any conditions (for example, needing drawings, contractor qualifications, or compliance certificates)
• reinstatement obligations at the end of the lease

2) Prepare A Clear Works Proposal

Your landlord (and their surveyor) will usually want enough detail to understand what you’re doing and how it affects the building. In practice, that may include:

• plans or drawings
• a specification of works
• a programme/timeline
• details of contractors (and sometimes proof of competence)
• method statements or risk assessments (common in managed buildings)

The clearer your proposal is, the faster the legal and surveyor review tends to be.

3) Landlord Review (Often With A Surveyor)

Landlords frequently instruct a surveyor to assess whether the alterations are acceptable and what conditions should apply. This is especially true for:

• structural works
• works affecting services (electricity, water, ventilation)
• any works that may affect other tenants

It’s also common for the landlord to require you to use insured contractors and to provide evidence of public liability insurance.

4) Agree The Draft Licence For Alterations

Once the landlord is satisfied in principle, a solicitor typically prepares the licence for alterations. Your solicitor reviews it, negotiates (where needed), and makes sure it ties in properly with your lease.

At this stage, it’s smart to treat the licence like any other commercial agreement: it creates obligations that can cost you real money later if they’re too broad or unclear. This is where a Contract Review can save you a lot of headaches.

5) Sign, Complete, Then Start Work

Only begin work once the licence is signed and dated by the parties (and any other required consents are in place).

Depending on the lease and the nature of the works, you may also need to consider:

• planning permission
• building regulations approval
• listed building consent (if applicable)
• party wall matters (more common where works affect a shared wall/structure, and less common for straightforward internal fit-outs)

These are separate from the licence for alterations - and you may need more than one approval to proceed safely.

What Should A Licence For Alterations Include? Key Clauses To Watch

A well-drafted licence for alterations does more than say “yes”. It sets the ground rules for your works, and it can shift risk onto you if you’re not careful.

While every licence is different, here are the terms small business tenants should pay close attention to.

1) Scope Of Works (Be Precise)

The licence should clearly define what you are allowed to do - often by reference to drawings and a specification.

If it’s vague, you risk:

• being accused of going beyond consent; or
• ending up with conditions that don’t match what you actually need to build.

2) Standard Of Work And Compliance

Most licences require works to be carried out:

• in a “good and workmanlike manner”
• in compliance with law (including building regulations and health and safety requirements)
• using suitably qualified contractors

These obligations aren’t unusual - but you should make sure you can practically comply (for example, if the landlord requires a specific type of contractor or certain working hours).

3) Reinstatement Obligations (At The End Of The Lease Or On Demand)

Reinstatement is one of the biggest financial issues for tenants.

Some licences (and leases) require you to remove alterations and return the premises to its original condition at the end of the lease. Others allow the landlord to decide at lease end whether you must reinstate.

Common reinstatement-related points include:

• what “original condition” means in practice
• whether reinstatement is automatic or at the landlord’s option
• how much notice the landlord must give you
• who pays for making good damage caused by removal

If you’re fitting out something expensive (like extraction, plumbing or specialist wiring), it’s worth negotiating this carefully upfront.

4) Landlord’s Costs (Yes, You Often Pay Them)

It’s very common for the tenant to pay the landlord’s reasonable legal and surveyor costs for dealing with the licence for alterations.

As a small business, the practical takeaway is: budget for this. Even if your works are modest, costs can add up if negotiations drag on or drawings keep changing.

5) Indemnities And Liability (Don’t Take On Unlimited Risk)

Licences for alterations usually include tenant indemnities. This means you agree to cover losses the landlord suffers as a result of the works - for example, damage to the property or claims by other occupiers.

Indemnities aren’t automatically “bad”, but you should watch for clauses that are:

• too broad (covering things beyond your control)
• uncapped, where a cap might be reasonable in the context
• not aligned with your insurance coverage

6) Evidence, Certificates And Sign-Off

Many landlords require you to provide completion evidence, such as:

• electrical certificates
• gas safety documentation (if relevant)
• building control sign-off
• as-built drawings

This is often manageable - but only if you know about it early and ensure your contractor can provide what’s needed.

7) Signing Formalities (Including Deeds)

Some licences for alterations are completed as a deed, particularly where they vary or supplement lease obligations in a more formal way. If it’s a deed, signing requirements can be stricter (including how signatures are witnessed).

It’s worth understanding Legal Signature Requirements before you try to execute the document quickly on the day you’re due to start works.

If witnessing is required, it also helps to know Who Can Witness A Signature so you don’t end up with an invalidly signed document that causes delays.

How Long Does A Licence For Alterations Take (And How Much Does It Cost)?

This is one of the first questions business owners ask, because timings affect your launch date, recruitment plans, and cashflow.

There’s no single answer, but here’s a realistic guide.

Typical Timeframes

• Minor non-structural works: sometimes 1–3 weeks, if your landlord is responsive and the document is straightforward.
• Standard fit-outs: often 3–6 weeks, especially if the landlord uses a surveyor and requires detailed plans.
• Complex or structural works: can be 6–10+ weeks, particularly if there are planning/building control elements or repeated design changes.

Common Costs To Budget For

• Your legal costs (reviewing and negotiating the licence)
• Your contractor and professional fees (drawings, specs, engineering input)
• Landlord legal costs (often payable by you)
• Landlord surveyor costs (often payable by you)

If you want to keep costs under control, one of the best things you can do is provide clear drawings and a stable scope of work from the start, rather than changing plans mid-negotiation.

Common Mistakes Tenants Make (And How To Avoid Them)

Most issues we see are avoidable - they happen because the business is moving fast (which is understandable), but the legal side hasn’t been lined up early enough.

Starting Work Too Early

Even if the landlord has said “we’re fine with it”, you typically want written consent in place before you begin. If things later change (or the landlord’s surveyor objects), you may be stuck halfway through a build with a legal dispute on your hands.

Assuming The Lease Allows “Reasonable” Alterations

Leases are contracts, and the wording matters. If your lease says “no alterations without consent” then consent is your starting point - not your fallback plan.

Not Thinking About Exit (Assignment, Sale, Lease End)

Imagine your business does really well and you want to sell it in two years. Due diligence questions will come up, including whether your fit-out was authorised and whether there are reinstatement obligations that affect the value of the deal.

Getting the licence for alterations done properly helps keep your options open.

Accidentally “Varying” The Lease Without Realising

Sometimes the wording of a licence for alterations effectively changes your lease obligations (for example, by adding extra reinstatement duties, new repair obligations, or extra compliance responsibilities).

In those situations, you might be looking at something closer to a formal lease variation. Depending on the structure, you may need a Deed of Variation or more careful drafting to ensure it all works legally and doesn’t create unintended consequences.

Using The Wrong Signing Process

If you sign incorrectly (for example, without valid witnessing where required), you can end up with an unenforceable document - which can derail your works and lead to uncomfortable disputes about what was actually agreed.

This is also why it’s important to understand Executing Contracts properly, particularly where deeds and companies are involved.

Key Takeaways

• A licence for alterations is the standard legal document that records your landlord’s written consent for works to your leased premises and sets conditions you must follow.
• Whether you need a licence depends on your lease and the type of works, but most commercial leases require consent for anything beyond minor cosmetic changes.
• Starting works without consent can put you in breach of lease, trigger reinstatement obligations, and create problems when you sell your business or assign the lease.
• A licence for alterations should clearly define the scope of works, address compliance, manage indemnities, and deal with reinstatement so you’re not surprised later.
• Timeframes and costs vary, but you should usually budget for both your own legal costs and the landlord’s legal/surveyor costs.
• Signing formalities matter - particularly if the licence is executed as a deed or requires witnessing - so it’s worth getting legal support before you’re up against a build deadline.

If you’d like help reviewing your lease, negotiating a licence for alterations, or making sure your documents are signed correctly, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.