Why Commercial Property Investors Should Understand Licence to Alter Before Approving Tenant Works

A tenant improving your building can be good news — until the alterations create a problem

Commercial tenants rarely occupy buildings exactly as they find them.

A growing business may want to install a mezzanine floor. A warehouse operator might require additional offices. A manufacturer may need extraction, machinery or upgraded electrical infrastructure. A retailer might want new signage and a complete internal fit-out.

Many of these improvements can make commercial premises more useful.

But landlords need to retain control over what is being changed.

This is where a Licence to Alter can become important.

For commercial property investors across Bury, North Manchester and the wider North West, properly managing tenant alterations can help protect the building, preserve future flexibility and reduce disputes when the lease eventually ends.

What is a Licence to Alter?

A Licence to Alter is a legal document used to formally record a landlord’s consent to certain works proposed by a tenant.

The precise requirements depend on the lease and the alterations involved.

The licence may address matters such as:

The approved works
Drawings and specifications
Contractors
Professional approvals
Reinstatement
Compliance with legislation
Costs

The tenant should not assume that because it occupies the building, it is automatically entitled to make whatever changes it wishes.

Start with the lease

Before considering any proposed alteration, the first question is:

What does the lease say?

Commercial leases commonly distinguish between different types of works.

Depending on the wording, alterations may be:

Permitted
Permitted with landlord consent
Prohibited

Structural alterations are often treated differently from minor internal works.

The actual lease wording needs to be reviewed by the parties’ legal advisers.

Why landlords should control alterations

A tenant naturally designs premises around its own operational requirements.

The landlord needs to think beyond the current occupier.

What happens when that tenant leaves?

An alteration that works perfectly for one company could make the building less suitable for the next.

Landlords therefore need to consider both:

the tenant’s requirements today

and

the property’s long-term investment value.

Mezzanine floors are a common example

Industrial tenants frequently want additional floor space without moving premises.

A mezzanine can potentially provide:

Storage
Offices
Production space

This may help retain a growing tenant.

But the landlord should consider matters including:

Structural loading
Fire safety
Access
Building Regulations
Future marketability

A professionally designed mezzanine may add useful functionality.

A poorly installed one can create substantial problems.

Additional offices can change warehouse flexibility

Tenants sometimes build extensive office accommodation inside industrial units.

For their business, this may be essential.

But future occupiers might prefer maximum warehouse space.

Landlords should therefore consider whether the proposed office content is proportionate and whether it can eventually be removed economically.

Machinery installations require careful review

Manufacturing businesses may need to install heavy equipment.

Works could involve:

Floor fixings
Machinery bases
Electrical supplies
Extraction
Compressed-air systems

These installations can affect the physical fabric of the property.

The landlord should understand exactly what is proposed before granting consent.

Extraction systems can affect several parts of a building

A commercial kitchen, manufacturing process or workshop may require extraction.

Installing it can involve penetrations through:

Walls
Roofs
External elevations

There may also be:

Planning considerations
Noise implications
Odour issues
Maintenance requirements

A seemingly simple tenant request can therefore require input from several professionals.

Roof penetrations deserve particular caution

Industrial roofs are expensive building components.

Poorly installed penetrations for:

Flues
Ducting
Cabling
Plant

can potentially create water-ingress problems.

Landlords should ensure proposed roof works are appropriately designed and installed.

The cost of correcting a badly altered roof can considerably exceed the value of the original tenant improvement.

Electrical upgrades can benefit the property

Not every tenant alteration represents a risk.

A tenant might fund a substantial electrical upgrade that improves the building’s future appeal.

For example:

Increased three-phase capacity
Improved distribution
Additional infrastructure

could potentially benefit future industrial occupiers.

The landlord should understand what will remain when the tenant eventually leaves.

EV charging is becoming a more common request

Businesses increasingly want to install electric vehicle charging points.

This can be beneficial to both tenant and landlord.

However, the installation may involve:

Electrical capacity
Cabling
Parking layouts
Groundworks

The landlord should consider whether the infrastructure should remain at lease expiry.

Future-proof improvements may be worth retaining.

Signage needs control

Businesses naturally want customers to find them.

But commercial landlords also need to protect the appearance of their properties and estates.

Signage requests might involve:

Fascia signs
Illuminated signs
Totem signs
Window graphics
Building-mounted branding

Planning or advertisement consent may also be required depending on the circumstances.

General information is available through the Planning Portal.

External alterations can affect investment appearance

One tenant may want bright corporate branding across the entire elevation.

Another may want large external equipment.

Individually these changes might suit the occupiers.

Across a multi-let estate, however, uncontrolled alterations can make the site appear inconsistent and poorly managed.

Landlords should maintain sensible design standards.

Planning permission and landlord consent are separate

A tenant obtaining planning permission does not automatically give it permission to alter the landlord’s building.

Likewise, landlord consent does not replace any planning permission that may be required.

Both issues need to be addressed independently.

This distinction should be made clear during the alteration process.

Building Regulations may also apply

Depending on the works, Building Regulations approval may be required.

Relevant matters can include:

Structure
Fire safety
Accessibility
Electrical works

Official guidance is available through GOV.UK – Building Regulations approval.

Tenants should use appropriately qualified professionals and obtain the necessary approvals.

Fire safety needs to be considered

Alterations can affect existing fire-safety arrangements.

For example, a new partition could change:

Escape routes
Travel distances
Fire compartmentation

A mezzanine could increase occupancy on an additional level.

Alterations should therefore be assessed as part of the building’s wider safety strategy rather than treated as isolated construction works.

Structural alterations require professional input

Removing walls, creating openings or adding significant loads can affect the building’s structure.

Landlords should not rely solely on a tenant or contractor saying:

“It’ll be fine.”

Structural engineers and other appropriate professionals should be involved where required.

Protecting the physical asset must remain a priority.

Alterations can affect insurance

Material changes to a commercial building may need to be considered from an insurance perspective.

The landlord should understand whether proposed works affect:

Building risk
Reinstatement
Fire exposure
Policy conditions

Tenants should not undertake significant works without the appropriate parties being informed.

The landlord may require professional costs to be covered

Processing a significant alteration request can involve:

Solicitors
Surveyors
Engineers
Other consultants

Depending on the lease and agreed arrangements, the tenant may be responsible for reasonable professional costs associated with considering and documenting its request.

This should be established early so neither party is surprised later.

Drawings should clearly identify the approved works

A good alteration process should make it clear exactly what the landlord has authorised.

Drawings and specifications can help prevent disputes.

Without clear documentation, the parties may later disagree about:

What was approved
What was actually installed
What needs to be removed

Good records protect everyone.

Before photographs can be useful

Recording the property before substantial works begin can provide a useful baseline.

Photographs may show:

Walls
Floors
Ceilings
External elevations
Services

This can become particularly valuable when reinstatement is considered years later.

What is reinstatement?

Reinstatement generally involves returning altered premises towards their previous condition at the end of the tenancy where the relevant contractual arrangements require it.

For example, a tenant may need to remove:

Partitions
Mezzanines
Machinery
Signage
Specialist installations

and repair resulting damage.

The exact obligation depends on the lease, licence and circumstances.

Landlords shouldn’t automatically require everything to be removed

This is an important commercial point.

Suppose a tenant has installed:

High-quality offices
EV chargers
Upgraded electrical infrastructure

Would removing those improvements genuinely benefit the property?

Possibly not.

The landlord should assess the building at lease expiry and decide which alterations improve future lettability.

But specialist alterations can become a liability

The opposite can also happen.

A tenant might install highly specialised equipment useful only to its particular operation.

When it leaves, the landlord could face significant costs returning the property to a standard specification.

This is why reinstatement should be considered before the alteration is approved, not after the tenant has gone.

Tenant alterations connect directly with dilapidations

At lease expiry, alterations often become part of the wider dilapidations discussion.

Questions may arise around:

Repair
Reinstatement
Decoration
Removal of additions

A well-documented Licence to Alter can make the position much clearer.

Poor records can create unnecessary disputes.

Alterations can influence rent reviews

Tenant improvements can sometimes create questions during future rent reviews.

Depending on the lease and applicable valuation assumptions, certain tenant-funded improvements may need to be treated in a particular way.

This is a specialist landlord-and-tenant valuation issue.

Investors should obtain advice from appropriately qualified surveyors where relevant.

The Royal Institution of Chartered Surveyors (RICS) provides information on professional property standards and qualified surveyors.

Alterations can influence future saleability

When an investor eventually sells the property, the buyer’s solicitor may request information about alterations.

The purchaser may want to see:

Licences
Planning approvals
Building Regulations documentation
Drawings

Missing paperwork can slow transactions.

Good asset management today makes future disposal easier.

Unauthorised alterations need to be identified

When acquiring a tenanted investment, investors should consider whether existing alterations have been properly documented.

A survey may reveal:

Mezzanines
Extensions
New openings
Extraction
Significant internal alterations

The legal due diligence should establish whether appropriate landlord consents and statutory approvals exist.

Don’t assume longstanding works were authorised

An alteration may have existed for fifteen years.

That doesn’t automatically mean the paperwork exists.

Historic undocumented works can create uncertainty for an incoming investor.

The issue should be investigated during acquisition rather than inherited without question.

Regular inspections can identify unauthorised works early

Landlords who never inspect their properties may discover substantial alterations only when the tenant leaves.

Appropriate periodic inspections, in accordance with the lease and required notice arrangements, can help identify changes sooner.

Early intervention is generally easier than dealing with years of accumulated issues.

Good landlords don’t automatically say no

Commercial tenants need buildings that work for their businesses.

A landlord who refuses every alteration request may eventually lose good occupiers to more flexible competitors.

The objective should be:

controlled flexibility.

Allow sensible improvements while protecting the long-term value and functionality of the property.

Alterations can support tenant retention

A growing tenant might otherwise need to relocate.

If the landlord allows a mezzanine, upgraded power supply or additional office accommodation, the business may be able to remain for another five or ten years.

Supporting appropriate tenant investment can therefore strengthen landlord and tenant relationships.

Multi-let estates need consistency

On a multi-let estate, alteration requests should be considered in the context of the wider site.

One tenant’s works should not negatively affect:

Neighbouring businesses
Shared access
Parking
Fire routes
Estate appearance

Good estate management considers both the individual unit and the overall investment.

Create a clear alterations procedure

Landlords with multiple commercial properties may benefit from having a consistent process.

For example:

Tenant submits proposed works.
Plans and specifications are provided.
Landlord’s surveyor reviews them.
Legal documentation is agreed where required.
Statutory approvals are obtained.
Works are completed.
Final documentation is retained.

This makes alteration requests easier to manage.

Keep a permanent property file

Commercial property ownership generates significant documentation.

For alterations, landlords should retain relevant:

Drawings
Licences
Certificates
Approvals
Photographs
Correspondence

These records may remain relevant long after the original tenant has left.

North Manchester’s SME market makes flexibility valuable

Businesses across Bury and North Manchester include manufacturers, engineers, trade suppliers, automotive companies, e-commerce operators and many other growing SMEs.

These occupiers often need to adapt premises as their businesses develop.

Commercial landlords who can accommodate sensible change while protecting their assets may be better positioned to retain successful tenants.

Citrus Commercial Circle’s market insight

At Citrus Commercial Circle, we believe the question shouldn’t simply be:

“Should I let the tenant alter the property?”

The better questions are:

What exactly do they want to change?

Will it improve or damage the long-term asset?

What approvals are required?

What happens when the lease ends?

A well-managed alteration can benefit both landlord and tenant.

An undocumented one can create years of problems.

Final thoughts

Tenant alterations are a normal part of commercial property ownership.

Businesses evolve, and their premises often need to evolve with them.

The key for investors is maintaining appropriate control.

Clear lease provisions, professional review, formal documentation and proper record keeping can allow tenants to improve premises while protecting the landlord’s long-term investment.

At Citrus Commercial Circle, we are proud to help landlords and investors across Bury and North Manchester manage commercial properties in a way that supports occupier growth while protecting long-term asset value.

Based in Bury. Active across North Manchester. Always on your side.

Call us today: 0161 383 1806

Email: info@citruscommercialcircle.co.uk

Visit: citruscommercialcircle.co.uk

Let’s unlock the full potential together.

Citrus Commercial Circle – Where standards meet success.