Commercial Rent Increase Letter Template for England and Wales

A Commercial Rent Increase Notice (often called a rent increase letter or a notice of rent increase on a commercial lease) is the formal written notice a landlord serves on a commercial tenant in England & Wales to confirm an upcoming rise in rent. It must comply with the statutory requirements that govern business tenancies and with the specific terms set out in your lease. The notice serves as official documentation of the increase and establishes the legal timeline for implementation.

What is a notice of rent increase on a commercial lease?

A notice of rent increase on a commercial lease is the written communication a landlord sends to a tenant to confirm that rent will rise, on what date, and on what basis. It is triggered by the review clause in the lease, not by the landlord's preference alone. A valid notice states the current rent, the new figure, the effective date, and the lease clause that permits the change, and it is served using the method the lease requires. The same document is sometimes titled a rent review memorandum once both sides have confirmed the agreed figure in writing.

Why does a commercial rent increase notice matter?

The purpose of the notice is to put the tenant on formal written notice of the new rental amount and the reason behind it, so there is no ambiguity about what has changed or when it takes effect. A clearly worded notice protects the landlord's income, keeps the landlord and tenant relationship healthy, and gives the tenant a fair chance to budget for the higher cost. Vague or late correspondence is the most common reason a review stalls, so the content and timing of the letter carry real weight.

Commercial rent increase notice compared with a residential section notice

Commercial and residential tenancies run on different rules, so the notice you serve depends on the type of let. A commercial rent increase notice relies on the review clause in a business lease and the Landlord and Tenant Act 1954. A residential rent increase follows a separate statutory route, often a section 13 notice for an assured tenancy, with its own prescribed form and notice period.

When do you need this document?

You need a Commercial Rent Increase Notice when your lease includes review clauses that allow for periodic increases, typically every three to five years. It is used when market rents have risen above the current rental level, when you need to adjust rent in line with the inflation index specified in the lease, or when fixed increase periods in the original agreement have been reached. The letter also applies when implementing increases following a lease renewal or when exercising upward-only review clauses common in commercial property. If your next review falls in 2026, drafting the notice early gives both parties time to agree figures before the effective date.

How much can a commercial landlord increase rent?

A commercial landlord can only increase rent to the extent the review clause in the lease allows. There is no statutory cap or fixed percentage limit in England & Wales; the ceiling is whatever method the lease sets. An open market review resets the rent to what a comparable property would command. An index-linked review moves the rent by RPI or CPI over the review period. A fixed uplift raises it by a percentage agreed at the start. Where the clause is upward-only, the rent cannot fall below the current level even if market values have dropped. A proposed figure that goes beyond what the clause permits can be challenged, so the clause is the starting point for any increase.

What does the review clause decide?

The review clause is the part of the lease that governs the increase. It sets the review dates, the valuation method, and the notice period you must give. Common methods include an open market review, an index-linked review tied to RPI or CPI, and a fixed percentage uplift agreed at the outset. The clause also states whether reviews are upward-only, and whether the tenant's consent or agreement is required to fix the figure. Read it carefully before you draft the notice, because a figure that goes beyond what the clause permits can be contested. For related property documents, see our lease agreement templates.

How the rent increase process works

A commercial rent review runs through a set order of steps, and knowing the sequence helps you serve a clean notice.

1. Check the review clause for the review date, method, and notice period.
2. Gather any valuation or comparable evidence the open market method requires.
3. Draft the notice, stating the current rent, the new figure, the effective date, and the clause relied on.
4. Serve the notice on the tenant by the method the lease specifies (registered post, personal service, or email where the lease permits it).
5. Allow time for the tenant to accept, negotiate, or refer a disputed figure to an independent surveyor.
6. Record the agreed rent and effective date in writing once both parties confirm.

What happens after you serve the notice?

Once the tenant receives the letter, a few things can happen. They may accept the new rent and continue paying at the higher rate from the effective date. They may ask questions or negotiate, especially where the open market method leaves room for different valuations. Where the lease provides for it, a disputed figure can be referred to an independent surveyor whose fee the lease usually splits or allocates between landlord and tenant. If the tenant pays the increased amount without objection, their conduct is often treated as consent to the reviewed figure. Keeping the exchange in writing protects both sides whatever the outcome.

How much notice do you have to give?

The notice period is set by the lease, and it is typically between three and six months before the increase takes effect. Serve the notice in writing and deliver it by the method the lease specifies, whether registered post, personal service, or another approved route. Give yourself enough time to include any valuation or comparable evidence the open market method requires, and to agree figures with the tenant where the lease allows negotiation. Keep a dated copy of the notice and proof of service on file, along with the tenant's contact details and any email confirmation, so the timeline is easy to evidence later.

What should a landlord-friendly rent increase letter include?

A clear, well-drafted letter protects the landlord's position while reading as fair to the tenant. Include the names of both parties and the property address, the current rent, the proposed new rent and the effective date, the lease clause that permits the increase, and the method used to calculate the figure. State the reason for the change, how the tenant can accept or raise questions, and the route for referring a disputed figure to an independent surveyor if the lease provides one. A letter that sets out each of these points leaves little room for challenge and keeps the conversation constructive.

Key points to check before you serve

The increase must be justified under the review provisions in your lease, and you cannot raise rent beyond what those terms permit. The letter must state the legal basis for the change, reference the relevant clause, and specify the new figure and effective date. If the lease requires professional valuation, ensure the proposed figure reflects current market conditions and comparable property values, and factor in any surveyor cost the review may trigger. Check whether the lease is contracted out of the Landlord and Tenant Act 1954, as this affects the tenant's renewal rights and how a review interacts with them. Where you hold tenant contact information, handle it in line with your data protection and privacy obligations under UK GDPR, including the privacy policy and cookie handling that cover any online portal you use to serve or store the notice.

Legal requirements in England & Wales

Under the Landlord and Tenant Act 1954 and supporting legislation, commercial rent increase notices must meet strict procedural requirements. The notice must be served in writing and delivered according to the service methods in your lease, whether by registered post, personal service, or another approved method. The figure must comply with the review mechanism in the lease, including open market assessments or index-linked increases. The Law of Property Act 1925 requires that notices affecting leasehold interests be properly documented and served. If a tenant disputes the increase, the lease may allow the matter to be referred to an independent surveyor, so your notice needs to be well-documented from the outset.

Where can I get help drafting the notice?

GenieAI drafts a ready-to-send notice from your lease terms, applies the correct review clause and notice period, and flags anything in the wording that could be challenged before you send it. You can review the draft, adjust the figures, and serve it directly. If you want to see how the wider tenancy fits together, start with our contract template library or the full set of lease agreement templates.