Reviewed by Clayton Ayling BSc (Hons) MRICS MPTS, Chartered Building Surveyor — Updated 4 August 2026
Landlord Approval of a Tenant Fit-Out
Approving a tenant fit-out on outline drawings costs a landlord the reinstatement claim at lease expiry, because the argument becomes about what was consented rather than what is owed. Landlord approval is a technical assessment as much as a legal one. It decides what may be built, how it is built, and what must be removed a decade later.
The assessment protects two positions. The first is the building itself — structure, fire strategy, services, and the interests of other occupiers. The second is the reversion, through a licence to alter that can actually be enforced at the end of the term.
Assess
Review the drawings and specification against the lease, the structure, the fire strategy, and the landlord services before consent is given.
Condition
Set the conditions the works are carried out under, and define the reinstatement obligation precisely enough to be enforced.
Monitor
Confirm during the works that what is built matches what was approved, and record the position at completion.
The key point
The value of a reinstatement obligation depends entirely on the quality of the documents that create it. A precise description of the permitted works, accurate drawings attached to the licence, and a record of what was actually built produce a claim that can be evidenced. Anything less produces a negotiation.
What the application should contain
Before any assessment begins, the application needs to be complete. An incomplete application generates rounds of queries, delays the tenant fit-out programme, and increases the fees the tenant pays.
- General arrangement drawings showing the proposed layout, at a scale that can be assessed.
- A specification covering finishes, partitioning systems, joinery, and services.
- Mechanical and electrical drawings where the works alter cooling, ventilation, small power, or lighting.
- Details of any works affecting sprinkler coverage, fire detection, or compartmentation.
- Structural details and calculations where loading is altered or openings are formed.
- The identity of the contractor and the proposed contract route.
- A programme, including working hours and access requirements.
- Confirmation of insurance cover and the arrangements under the Construction (Design and Management) Regulations.
The technical review
The assessment is carried out by Clayton Ayling, a chartered building surveyor regulated by RICS, and covers the matters that affect the building rather than the commercial terms.
Structure and fabric
Whether the proposals alter loading on the floor plate, form openings in walls or slabs, fix into structure, or affect the envelope. Whether any element requires structural design or building control approval.
Fire and life safety
Whether partitioning affects compartmentation or means of escape, whether sprinkler and detection coverage remain compliant with the enclosed layout, and whether travel distances and final exits still work.
- Effect on landlord plant and primary services, including whether terminal units, risers, and distribution remain accessible for maintenance.
- Supplementary cooling — condenser locations, condensate drainage, acoustic effect on other occupiers, and whether the roof or riser capacity supports it.
- Acoustic separation where enclosed rooms adjoin the demise of another occupier.
- Effect on the common parts during delivery, including access routes, lift use, and waste removal.
- Whether the specification is deliverable within the demise as it exists, rather than as the drawings assume.
- Whether the works alter anything that would need to be handed back in a defined state at lease end.
Setting the conditions
Consent is given subject to conditions governing how the works are carried out. These protect the building and the other occupiers during the fit-out.
- Working hours, and which operations must be carried out outside normal occupancy.
- Access routes, lift use, loading arrangements, and protection to common parts.
- Insurance requirements for the tenant and the contractor.
- Notification and isolation procedures for work affecting fire alarm and sprinkler systems.
- Standards of workmanship and materials, and compliance with the base-build specification where relevant.
- Statutory approvals to be obtained before the relevant works begin.
- Documents to be provided on completion — as-built drawings, commissioning records, warranties, and the health and safety file.
Conditions should be capable of being met. A condition the fit-out programme cannot deliver will be breached rather than followed, and it weakens the position on the conditions that matter.
Monitoring the works
On anything beyond minor works, monitoring during the fit-out is worth the cost. It confirms the works follow the approved drawings, identifies departures at a point where they can still be corrected, and produces a contemporaneous record.
Departures from approved drawings are common and are usually not deliberate. Layouts change as the tenant requirement develops, services are rerouted around site conditions, and specifications are substituted. Each departure sits outside the consent unless the licence is varied, and each one becomes an argument at lease end.
Monitoring visits also confirm that conditions are being observed — protection to common parts, isolation procedures for fire systems, and access arrangements. At completion, the record of what was actually built becomes part of the evidence supporting any future reinstatement claim.
Protecting the reinstatement position
The reinstatement clause is the part of the licence with lasting financial effect. Drafting it precisely at the point of consent is what makes it enforceable later.
- Define the permitted works by reference to drawings the works will actually be built to, not to an outline layout.
- State clearly whether reinstatement is automatic or arises only on notice, and set a notice period that is workable for both parties.
- Identify the standard the premises must be returned to, rather than referring loosely to the original condition.
- Record the condition of the demise before the works begin, through a schedule of condition. This protects both parties.
- Require as-built drawings on completion, and keep them with the licence.
- Vary the licence where the design changes materially during the works.
Where the intention is to refurbish the floor between lettings in any event, that should inform the approach. Works the landlord was always going to carry out are superseded and are not recoverable at expiry. The principle is set out in supersession.
Acting reasonably and within a reasonable time
Where the lease qualifies consent so that it is not to be unreasonably withheld, the landlord carries obligations of its own. Consent must not be withheld unreasonably, a decision must be reached within a reasonable time, and reasons should be given where consent is refused.
Delay is a practical risk as well as a legal one. A tenant fit-out programme is normally committed against a rent-free period, and a slow consent process pushes the occupier into paying rent on space that cannot be used. That damages the relationship at the start of a term that may run for ten years or more.
A prompt, structured assessment with clear conditions serves the landlord better than a slow one. It protects the building, produces an enforceable licence, and keeps the letting on programme.
Reviewing a tenant fit-out application?
The assessment given at the point of consent determines both what happens to the building during the fit-out and what can be recovered at the end of the term. Both are decided before the licence completes.
See the office fit-out surveyor service, the commercial building surveyor service, and the guide to the licence to alter.
Related knowledge
Compare this article with the nearest matching pages if you want to follow the topic into related surveying questions.
Guide to the licence to alter for commercial and leasehold property — what the consent covers, when the lease requires it, the cost, the reinstatement obligation it creates at lease expiry, and what a chartered building surveyor assesses that a solicitor does not.
What CAT A and CAT B fit-out cover, how they differ from shell and core and CAT A plus, who pays for each, and why the distinction determines the reinstatement obligation at lease expiry.
Guide to office fit-out reinstatement at lease expiry — what CAT B strip-out involves, where the obligation comes from, what it costs, and how the claim is tested against the licences, section 18, and supersession.
Practical guide to the schedule of condition for office premises — how lease-start evidence can manage repair and reinstatement liability, the CAT A and CAT B fit-out context, photographic evidence, licences to alter, and lease expiry dilapidations.
Key Services
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