What Is a Description of Premises in Commercial Leases? A Guide for Business Tenants

Signing a commercial lease is an exciting step for your business - it’s often the moment your physical premises become a reality. But as you comb through that chunky lease document, you’ll notice a section called the “Description of Premises.”

If you’re a business tenant in the UK, understanding this isn’t just recommended - it’s crucial to protect yourself from future disputes. This guide breaks down what a description of premises means in a commercial lease, why it matters for your business, and what to look out for before you sign on the dotted line.

Ready to make sure your commercial premises are a perfect fit (and legal headache-free)? Keep reading for everything you need to know about this foundational part of your lease.

What Does “Premises” Mean in a Commercial Lease?

Before we dive into the description itself, let’s clear up this central keyword: premises. In a commercial lease, “premises” refers to the actual space you have the right to occupy and use for your business - nothing more, nothing less.

Your lease agreement will spell out what’s included as the premises (for example, “Unit 5, Business Park, Postcode X”), and often what isn’t (like communal hallways, toilets, or car parking spaces). It could be anything from a single office to an entire building, a shop front, a warehouse unit, or even a floor within a multi-tenant property.

In simple terms, the premises are your business base. But the exact boundaries can get surprisingly technical, which is why a precise description matters so much.

Why Is an Accurate Description of Premises So Important?

An accurate, detailed description of your leased premises is more than just a formality - it’s your business’s first line of defence if there’s ever a dispute over space, repairs, or rights. Here’s why getting this part right is vital:

• Clarity of rights: You need to know exactly what you’re paying for and what areas you have legal access to.
• Responsibility for repairs: The description determines which parts you’re responsible for maintaining, and which the landlord covers.
• Protection from disputes: A vague or missing premises description can lead to arguments with your landlord, surrounding tenants, or even the local council.
• Business planning: It affects how you set up, fit out, and operate your business, including placing signage, installing equipment, or meeting licensing rules.

In short: if it’s not clearly marked as part of your premises in the lease, you may not have the right to use, vary, or even access it. Uncertainty now can cause headaches and - potentially - legal costs later.

What Does a Typical Description of Premises Include?

Descriptions of premises in commercial leases in the UK usually include the following elements:

• Full postal address and any designated unit, floor, or suite numbers.
• Physical boundaries described with words (for example: “the ground floor retail unit edged red on the attached plan”).
• A plan or map, usually attached as a schedule or appendix to the lease, showing the premises outlined in colour or shading.
• Details on included/excluded areas, such as service corridors, storage spaces, toilets, shared entrances, or exterior walls.
• References to building elements like “from floor to ceiling, including interior plaster,” or “excluding windows and roof.”
• Sometimes, a description includes “airspace above” or specific rights to use the roof or external areas (for things like signage or air conditioning units).

For example, your lease might say the premises are “the retail shop known as Unit 2, High Street, as shown hatched blue on Plan A, including basement storage and rear yard, but excluding the shared loading bay.”

Always read both the wording and check the attached plans - inconsistencies can cause confusion, and what’s omitted can be as significant as what’s included.

Common Problems If the Premises Are Not Properly Defined

Here are some classic issues business tenants face if the premises definition is unclear or incomplete:

• Repair disputes: Is that leaking window sill yours or the landlord’s responsibility?
• Rights of access: Can you use the back alley for deliveries, or is it off-limits?
• Use of shared areas: Are you entitled to use the staff toilets, car parking, or a shared kitchen - or is access at the landlord’s discretion?
• Expansion and signage: Are you allowed to fix your own signboard outside, or is that space not included in your premises?
• Unexpected bills: Being held responsible for repairs or service charges for areas you didn’t intend to take on.

Many of these issues can be avoided with a well-drafted commercial lease and a watertight description of your premises. It’s smart to get legal advice before signing anything - a specialist can help you spot red flags and negotiate necessary changes.

How Can You Check If a Premises Description Is Sufficient?

Reviewing your commercial lease with a critical eye is an essential step before you move in. Here’s a checklist to help you assess whether the description is clear and complete:

• Is the address detailed enough to identify your unit, floor, or section?
• Does the written description match the accompanying plan? (Double check any boundaries, doors, or external areas shown.)
• Are shared and exclusive areas distinguished (e.g., are car parks, hallways, or corridors yours or not)?
• Is it clear which walls, floors, ceilings, fixtures, or outdoor areas are part of your premises?
• Is the plan up-to-date and accurately marked (with a scale, legend, and clear boundaries)?
• Are there any mentions of rights-of-way, roof access, exterior walls, or utilities that could affect your business?
• Are any areas specifically excluded (for example, “excluding roof space and structural walls”)?

Not sure about any aspect of this? Don’t settle for a vague answer or a promise to “sort it later.” Getting legal advice at this stage can help protect your interests and avoid unexpected liabilities down the track. If you’re new to lease agreements, you can learn more about commercial lease law for business tenants here.

What Legal Documents and Clauses Should You Look For?

Besides the lease’s premises description and plan, there are other areas in a commercial lease that tie directly back to the definition of the premises. Watch for the following:

• Repair and maintenance clauses - these set out your obligations over the premises versus the landlord’s duties (often called “demised premises” in the lease wording).
• Service charge clauses - your contribution should only be for the parts of the building you actually use.
• Insurance clauses - check whether you’re responsible for insuring any parts of the building beyond your defined premises.
• Access rights and permitted use - these may reference the boundary of your premises or shared areas.
• Plans and maps attached - these should accurately and clearly show your premises and any included/excluded spaces.

If the legal language is heavy on jargon like “demised premises,” “retained parts,” or “landlord’s fixtures,” don’t hesitate to seek clarification. Contract review services can explain these in plain English and highlight any risks for your business.

What If the Premises Need Altering, Expanding, or Redefining?

Your business might expand, need extra storage, or change its operations over time. What then?

If you ever need to alter the premises (such as knocking through to an adjacent unit, adding signage outside, or using more of a communal space), you’ll need:

• Landlord’s written consent - typically set out in a formal licence for alterations, not automatically granted.
• A lease variation or addendum - to update the formal description of your premises.
• Updated plans, contracts, or insurance - to reflect your new responsibilities and rights.

Always get any expansion or change in writing, and keep your legal advisers in the loop before you take action.

How Does Premises Description Affect Your Other Legal Obligations?

The premises you lease don’t exist in a vacuum - they’re at the heart of multiple regulatory and compliance requirements. Here are just a few areas affected by how your premises are defined:

• Business Rates and Council Tax: Your rates bill will be based on the exact area you occupy.
• Health and Safety: Your responsibilities over fire exits, access, and safety equipment depend on the boundaries of your premises.
• Licensing (e.g., alcohol or food): The address and plan of your premises will form part of your licensing application.
• Data Protection and Security: If you’re storing or processing customer data on the premises, the area’s access points and structural layout may affect your compliance requirements under the Data Protection Act 2018 and UK GDPR.
• Insurance: Insurers may require a copy of the exact lease description and plan to assess your cover.

If you want a more in-depth breakdown of legal compliance for UK business premises, you might find our retail compliance guide helpful - it covers key premises-related regulations for business owners.

Can You Negotiate the Description of Premises?

Yes - and you shouldn’t hesitate to do so. Lease terms are often drafted to favour the landlord, so if the description is inaccurate, unclear, or doesn’t fit your intended use, ask for it to be updated before you sign.

Areas you may wish to negotiate:

• Adding exclusive use of external spaces (like a frontage, yard, or parking space).
• Clarifying responsibility for repairs on doors, windows, interior walls, etc.
• Securing access rights to essential shared services, corridors, or loading bays.
• Requesting improved accuracy - a newly drawn plan, more detail in the boundaries, or clearer exclusions.

Remember, once you sign, you’re committed. If you need help striking a fair deal, our guide on negotiating commercial contracts offers practical tips to protect your position.

What Other Legal Documents Should Commercial Tenants Have?

Getting your premises description right is just the beginning. Solid legal foundations for your business should also include:

• A professionally drafted commercial lease agreement tailored to your needs.
• Insurance policy documents that reflect the exact premises you’re leasing - never assume you’re covered for more (or less) than you should be.
• Licensing and permits for your operations (for more, see our guide to UK liquor and business licences).
• Records of fire safety, health, and safety compliance for your premises.
• Fit-out and improvement licences, if required by your landlord.

Avoid using off-the-shelf templates or relying on promises - every business situation is unique, and your contracts should protect your specific interests.

Key Takeaways: Premises Description in Commercial Leases

• Your “premises” in a commercial lease are the physical spaces you have exclusive rights to - don’t assume more or less than is written and drawn in the lease.
• A clear, detailed description (with an accurate plan) protects you from disputes over repairs, access, and use of shared areas.
• Check that the premises definition matches your business needs, and negotiate changes upfront if needed.
• Poorly defined premises can leave you exposed to unexpected costs, inconvenience, or legal battles in the future.
• Always seek expert legal help when reviewing or negotiating a commercial lease - a solid description now is the best risk management for your business growth.

If you’d like tailored advice about your commercial lease, or need help reviewing the description of your premises, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat. We’re here to make sure your legal foundations are solid from day one.