🏢 Lease Assignment Solicitor – Assigning a Commercial Lease

Assigning a commercial lease allows a tenant to transfer their lease to a new occupier, providing an alternative to remaining tied into a long-term commitment.

However, lease assignment is a legally complex process involving landlord consent, strict lease terms, and ongoing risk if not handled correctly.

We provide specialist advice on lease assignments for tenants, landlords, and incoming tenants across England and Wales.

What Is a Lease Assignment?

A lease assignment is the legal transfer of a tenant’s interest in a lease to a third party (the “assignee”).

After assignment:

The new tenant takes over occupation of the property
The lease continues on the same terms
The outgoing tenant may still retain certain liabilities

Why Assign a Lease?

Tenants may assign a lease where:

The business is relocating
The premises are no longer suitable
The tenant wants to reduce costs
The lease term still has significant time remaining

👉 Assignment is often a practical alternative to:

Exercising a break clause
Negotiating a surrender

⚠️ Key Risk: Ongoing Liability After Assignment

One of the most important issues in lease assignment is that the outgoing tenant may remain liable.

In many cases:

The landlord will require an Authorised Guarantee Agreement (AGA)
The outgoing tenant guarantees the performance of the new tenant

👉 This can expose the outgoing tenant to future financial risk if the new tenant defaults.

Our Lease Assignment Services

We provide comprehensive advice on all aspects of lease assignment, including:

✅ For Tenants (Assignors)

Reviewing lease provisions
Advising on assignment rights and restrictions
Negotiating with landlords
Minimising ongoing liability
Drafting or reviewing assignment documentation

✅ For Incoming Tenants (Assignees)

Reviewing the lease terms before taking assignment
Identifying risks and obligations
Advising on repair, rent and compliance issues
Negotiating assignment terms

✅ For Landlords

Reviewing applications for assignment
Drafting licences to assign
Ensuring tenant quality and covenant strength
Protecting long-term property interests

Landlord Consent – A Critical Step

Most commercial leases require the landlord’s consent before assignment.

Key points:

Consent cannot be unreasonably withheld (in most cases)
The landlord can impose reasonable conditions
Delays can occur if applications are not properly prepared

👉 Proper legal advice ensures the process runs smoothly.

Licence to Assign

Before assignment can proceed, landlords usually require a Licence to Assign, which is a formal legal document setting out consent and conditions.

This may include:

References for the incoming tenant
Financial checks
Requirement for an Authorised Guarantee Agreement
Payment of landlord’s legal costs

Authorised Guarantee Agreements (AGAs)

AGAs are a key feature of many assignments.

Under an AGA:

The outgoing tenant guarantees the new tenant’s performance
Liability continues until the lease ends or is reassigned again

👉 This is one of the most significant legal risks for tenants and must be carefully considered.

Due Diligence for Incoming Tenants

Before taking an assignment, incoming tenants should carefully review:

Rent obligations
Repair liabilities
Lease length and break clauses
Existing breaches or disputes

👉 Taking on a lease without proper advice can result in unexpected liabilities.

Common Issues in Lease Assignments

We regularly advise on:

Landlord refusal of consent
Delays in obtaining licences to assign
Disputes over conditions
Ongoing liability of outgoing tenants
Defects in lease documentation

Lease Assignment vs Subletting

Tenants sometimes consider subletting instead of assignment.

Key differences:

Assignment:

Full transfer of lease
Original tenant may remain liable

Subletting:

Tenant remains in control
Creates a new lease with a subtenant

👉 The best option depends on your commercial objectives and lease terms.

How the Lease Assignment Process Works

1. Review the Lease

Check whether assignment is permitted and on what terms.

2. Find an Incoming Tenant

Agree commercial terms with the new tenant.

3. Apply for Landlord Consent

Provide required information, including financial references.

4. Negotiate Licence to Assign

Agree conditions with the landlord.

5. Complete Legal Documentation

Execute assignment agreement and related documents.

6. Completion

Lease is formally transferred to the new tenant.

Do You Need a Lease Assignment Solicitor?

Yes — lease assignment involves multiple legal, financial, and strategic considerations.

Mistakes can result in:

Ongoing liability
Unfavourable lease terms
Delays or failed transactions

A specialist solicitor ensures:

Legal compliance
Strong negotiation position
Protection of your financial interests

FAQs

Can a landlord refuse a lease assignment?

A landlord cannot usually unreasonably withhold consent, but they can impose reasonable conditions.

What is an Authorised Guarantee Agreement?

An agreement where the outgoing tenant guarantees the obligations of the incoming tenant.

How long does a lease assignment take?

Typically 3–8 weeks, depending on complexity and landlord responsiveness.

Can I assign a lease without consent?

No — this will usually be a breach of the lease and can have serious legal consequences.

What costs are involved?

Costs typically include legal fees, landlord’s legal costs, and potential administrative charges.

Get Expert Lease Assignment Advice

Whether you are assigning a lease, taking one on, or acting as a landlord, we provide clear, commercially focused advice to ensure the transaction proceeds smoothly and your interests are fully protected.