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Commercial Lease End: A Tenant's Guide to Dilapidations

What to expect from a terminal schedule, how to negotiate effectively, the diminution valuation defence and strategies to reduce your dilapidations liability.

Guidance NoteApril 2026Dilapidations
Overview

Understanding dilapidations

As a commercial lease approaches expiry, tenants in Westminster, the City of London and across the capital face the prospect of a dilapidations claim from their landlord. These claims can be substantial, but with proper preparation and professional advice, tenants can significantly reduce their exposure.

What is a terminal schedule?

A terminal schedule of dilapidations is served by the landlord at or shortly after the lease end. It lists every alleged breach of the tenant's repairing, decorating and reinstatement covenants, describes the remedial work required, and is costed to produce a total claim. The claim is a negotiating position, not an established liability. Many items in a typical schedule can be legitimately challenged on technical, lease interpretation or legal grounds.

The section 18 cap

Section 18(1) of the Landlord and Tenant Act 1927 provides that a landlord's dilapidations damages cannot exceed the diminution in value of the reversion caused by the breaches. This is a crucial protection for tenants. If the landlord intends to demolish, substantially refurbish or redevelop the property, the diminution may be nil or far below the cost of repair. A diminution valuation by a qualified surveyor or valuer can be the most powerful weapon in a tenant's arsenal.

Negotiation strategy

Effective negotiation requires a detailed response to the schedule, challenging items that are not genuine breaches, disputing inflated costings, raising the diminution cap where applicable, and identifying works that the landlord would carry out regardless of the tenant's breaches (supersession). Early engagement with a chartered building surveyor experienced in dilapidations is essential to develop a robust negotiating position.

FAQ

Frequently asked questions

What is a terminal schedule of dilapidations?

A document listing alleged breaches of the tenant's repairing, decorating and reinstatement obligations, with costed remedial works. It is a negotiating document, not a court judgment.

What is the diminution valuation defence?

Section 18(1) of the Landlord and Tenant Act 1927 caps damages at the diminution in value caused by the breaches. If the landlord intends to demolish or refurbish, the cap may be nil or significantly below the cost of repair.

When should a tenant start preparing for dilapidations?

At least 18 to 24 months before lease end. This allows time to review lease obligations, assess exposure, carry out cost-effective in-situ works and negotiate exit terms.

How much do dilapidations claims typically cost tenants?

Claims range from £10,000 for a small office to over £1 million for large commercial properties. With professional advice, reductions of 30 to 60 percent on the initial claim are commonly achieved.

Next Steps

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