Licence to alter
It is often necessary for leaseholders to alter premises they occupy, either before they first move in, or because of a need to refurbish the premises or change their operations.
Depending on the conditions of the lease and the nature of the alterations it is likely that a licence to alter will be required from the landlord giving the leaseholder permission to carry out the alterations.
Typically, works that require a licence might include altering; the structure, building services, internal walls or doors, external windows and so on. Minor changes that might be permitted without the permission of the landlord could include; putting up shelves, redecorating, laying new carpets, and so on. Alterations to leasehold premises are a common cause of dispute, and if there is any doubt about whether works require a licence to alter, the landlord should be consulted. Failure to obtain permission could constitute a serious breach of the lease.
Obtaining permission can be time consuming, particularly if it coincides with agreeing the lease itself, and this can present the leaseholder with the difficulty of having to appointing designers and even contractors at risk to carry out works that might not in the end be permitted. It is important therefore that the landlord should be consulted as soon as possible to determine; whether a licence is necessary, the likelihood of permission being granted, the timescale for obtaining a licence and the form of application required.
An application for a licence to alter might include:
- A description of the works.
- The programme for the works.
- Drawings showing the existing and proposed layout.
- Structural drawings and calculations.
- Building services drawings.
- Specifications.
- Risk assessments and method statements.
- A copy of the F10 notification.
- Evidence of insurances. NB Insurance of the works can be expensive to obtain relative to the value of the works because of the risk to other parts of the premises, and can sometimes be dealt with by adding the leaseholder and contractor to the landlord's insurance.
- Evidence of necessary planning permission, buildings regulations permission and other statutory approvals.
- Evidence of compliance with the Party Wall Act.
The Landlord and Tenant Acts require that permission is not unreasonably withheld, and in some situations, alterations which are necessary to comply with statutory requirements, cannot be withheld.
The licence itself records the agreed changes and the conditions under which those changes must be carried out:
- The agreed works.
- The conditions for the works (such as working hours, noise nuisance, cleanliness and waste handling).
- Requirement to comply with statutory obligations.
- Insurance requirements.
- Allocation of costs. Costs incurred by the landlord in having proposals assessed and preparing the licence to alter may be chargeable to the leaseholder as may additional insurance premiums and work that the landlord wishes to carry out themselves, for example work to security and alarm systems.
- The provision of as-built drawings and specifications.
- Requirement to reinstate the works at the end of the lease (see dilapidations for more information).
The timing of works associated with a licence to alter can be complicated, particularly when they are associated with the initial move into the premises, and a need to synchronise this with:
- The agreement of the lease.
- Relocation and removals.
- Purchase of new equipment, furniture, fixtures and fittings.
- Reinstatement works to the premises that are being vacated.
- Termination of the lease for the premises that are being vacated.
Failure to synchronise these activities can result in significant additional costs, or the need for temporary accommodation.
The landlord may wish to inspect the works at commencement, during the construction period and on completion.
[edit] Related articles on Designing Buildings
- Agent of change.
- Betterment.
- Building an extension.
- Commonhold
- Conversion.
- Dilapidations protocol.
- Dilapidations.
- F10 notification.
- Freehold.
- How to build a porch.
- Land law.
- Lease Negotiations - Tenants Checklist.
- Leasehold.
- Licence for Alterations for Apartment.
- Property disrepair and landlord liabilities.
- Quantified demand.
- Renovation.
- Rent-free period.
- Repairs and optional improvements.
- Restoration.
- Reversion.
- Sample retail lease.
- Schedule of dilapidations.
- Scott schedule.
Featured articles and news
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.






















