Lease Plan for a Lease Extension: What London Property Owners Should Check

A lease plan can be an important document when dealing with leasehold property. If you are considering a lease extension in London, it is worth checking your existing lease, property plans and title documents before proceeding.

A lease extension changes the terms or duration of an existing lease. The documents required will depend on your circumstances and the legal process involved. In some cases, the existing lease plan may be sufficient. In others, your solicitor or conveyancer may need additional information or an updated plan.

Understanding what to check can help you prepare for discussions with your legal adviser and identify possible issues early.

What Is a Lease Plan?

A lease plan is a drawing that identifies the property or area covered by a lease. For a flat, it may show the relevant floor, the property’s position within a building and any areas included in the agreement.

Depending on the property, the plan may also identify a parking space, storage area, garden or other associated space.

The plan should correspond with the description of the property in the relevant legal documents. If it is unclear which areas belong to the flat or form part of the lease, further clarification may be necessary.

HM Land Registry provides official guidance on preparing plans for Land Registry applications.

Does a Lease Extension Always Require a New Lease Plan?

No. A new lease plan is not automatically required for every lease extension.

The requirement depends on the existing lease, the nature of the proposed changes and the documents needed for the transaction.

For example, a lease extension that changes the lease term without changing the property extent may be different from an agreement that also changes the areas included in the lease.

Your solicitor or conveyancer can review the circumstances and advise whether the existing plan is suitable.

Before commissioning a new drawing, ask your legal adviser to confirm what is required. This can help you avoid paying for a replacement document that may not be necessary.

Why Should You Check Your Existing Lease Plan?

Reviewing your existing lease plan can help you understand how the property is currently documented.

This is particularly useful for older flats, converted houses and properties within larger residential buildings.

1. Confirm the Property Address

Check that the plan corresponds to the correct property. The address, flat number, floor and other identifying details should be consistent with the relevant documents.

2. Check the Areas Included in the Lease

Review whether the plan identifies the flat and any associated areas, such as a balcony, garden, parking space or storage unit.

Do not assume that an area belongs to the flat simply because you currently use it. Your legal adviser should check the lease and supporting documents.

3. Review the Floor Layout

For flats in multi-storey buildings, the relevant floor level and the extent of the property may need to be clear.

If the existing drawing is difficult to understand, ask your solicitor whether further documentation is needed.

4. Compare the Plan With the Lease

Check the property description in the lease against the accompanying plan.

Differences in flat numbers, marked areas or references to external spaces may need clarification before the transaction proceeds.

5. Keep the Existing Documents Together

Gather the lease, any attached plans, the title register and the title plan if available.

Keeping these documents together gives your solicitor a clearer starting point for reviewing the proposed extension.

What If the Property Layout Has Changed?

Property layouts can change over time. Owners may carry out alterations, combine rooms, convert spaces or make changes to external areas.

However, a physical change does not automatically mean the legal extent of the lease has changed.

If the property differs from the existing lease plan, explain the situation to your solicitor before arranging an updated drawing.

Your legal adviser can determine whether the changes affect the lease, whether additional permissions or documentation are needed and whether a revised plan should be prepared.

Avoid assuming that a new floor plan will resolve a legal discrepancy. A marketing floor plan and a lease plan serve different purposes.

What Information May Be Needed for an Updated Lease Plan?

If your solicitor confirms that an updated plan is required, ask which information the plan must include.

Depending on the property and intended use, relevant details may include:

• The property’s full address and flat number.
• The location of the property within the building.
• The floor level or levels covered by the lease.
• Clearly marked areas included in the lease.
• Relevant parking, storage or garden areas.
• Surrounding features that help identify the property’s location.
• An appropriate scale and other required plan details.

The precise requirements depend on the transaction. HM Land Registry’s official plan preparation guidance explains the considerations that apply to plans submitted for registration.

Your solicitor should confirm the necessary specifications before you commission the work.

Lease Plan vs Property Floor Plan

These documents may look similar, but they have different purposes.

A property floor plan typically illustrates the internal layout of a home. Estate agents use floor plans to help buyers and tenants understand room arrangements and the overall layout.

A lease plan identifies the area covered by a lease. Its purpose is connected to the legal documentation for the property.

A standard marketing floor plan may not meet the requirements for a lease or registration application.

If you are preparing a property listing, you can explore our property floor plan services.

If you need a plan for a lease extension, first ask your solicitor or conveyancer to confirm the required format and level of detail.

How to Prepare for a Lease Extension

Preparing your documents before speaking to your legal adviser can make the initial review more straightforward.

Follow these steps:

Step 1: Find your current lease.

Locate the original lease or an available copy, including any plans attached to it.

Step 2: Check your property documents.

Gather the title register, title plan and other relevant documents that you already have.

Step 3: Identify any discrepancies.

Check for differences in the property address, flat number, floor level or areas shown on the plan.

Step 4: Explain any alterations.

Tell your solicitor about changes to the property that might affect its layout or the areas included in the lease.

Step 5: Confirm whether a new plan is needed.

Ask your solicitor to confirm the requirements before commissioning an updated drawing.

Step 6: Check the final document.

If a new plan is prepared, review it with your legal adviser to make sure it accurately reflects the intended property extent and meets the relevant requirements.

Other Documents to Prepare When Dealing With a London Property

A lease extension is a legal matter, but property owners may also need to organise other documents when preparing a property for sale or rental.

For example, an Energy Performance Certificate may be relevant when marketing a property, subject to the applicable requirements and exemptions.

Our recent guide, EPC Documents You Need When Selling or Renting in London, explains how to check and prepare the relevant energy certificate information.

If you are preparing a rental property for the market, read our Rental Property Listing Checklist London for advice on EPCs, photography, floor plans and property listing information.

You can also read How to Improve Your EPC Rating Before Selling or Letting to learn about energy-efficiency recommendations and property preparation.

These guides cover separate aspects of property ownership and marketing. They do not replace legal advice about a lease extension.

Common Mistakes to Avoid

When reviewing a lease plan, avoid these common mistakes:

Assuming every lease extension needs a new plan. The requirement depends on the circumstances and the documents involved.

Using a marketing floor plan as a legal plan. The documents serve different purposes and may have different specifications.

Ignoring differences between documents. An unclear property description or apparent mismatch should be referred to your solicitor.

Changing the plan without legal advice. An amended drawing should accurately reflect the relevant property extent and meet the requirements of the transaction.

Commissioning a plan before confirming the specifications. Check what your solicitor needs before paying for a new drawing.

Addressing these points early can help you prepare the correct information for your legal adviser.

Frequently Asked Questions

Do I need a new lease plan for a lease extension?

Not necessarily. The requirement depends on the existing lease, the proposed changes and the documents needed for the transaction. Your solicitor can advise whether the current plan is sufficient.

Can I use my existing lease plan?

Possibly. If the existing plan accurately identifies the property and meets the requirements of the transaction, it may be suitable. Your solicitor should confirm this.

What happens if my lease plan is incorrect?

If the plan appears inconsistent with the lease or the property’s extent, ask your solicitor to investigate. The appropriate next step will depend on the nature of the discrepancy.

Can an estate agent prepare a lease plan?

A standard estate agency floor plan is generally intended for marketing. If you need a plan for a lease extension or registration, confirm the requirements with your solicitor before commissioning one.

Where can I find official guidance on lease plans?

HM Land Registry publishes guidance about preparing plans for registration applications. You can read its official guidance for preparing plans.

Final Thoughts

A lease plan can help identify the property covered by a lease, but a new drawing is not automatically required whenever a lease is extended.

Start by reviewing your existing lease and property documents. Check that the plan identifies the correct property and note any differences that may need investigation.

Before commissioning an updated plan, ask your solicitor or conveyancer to confirm the requirements for your specific transaction.

If you are also preparing a London property for sale or rental, EPC Rate London offers EPC assessment services and property floor plans.

For legal and registration requirements, always refer to your conveyancer and the latest official HM Land Registry guidance.