×
Get a Quote

Roof Terrace and Rear Window Access Door Planning Permission Approved by Kensington and Chelsea Council

Development Type

Replacement of windows
Roof terrace/ balcony
Other developments

Borough

Kensington and Chelsea

Upper Maisonette, 76 Lancaster Road, W11 1QS

Before

After

Development Type

Roof terrace

 

Proposed Development

Replacement of rear window with access door to allow access onto a flat roof terrace together with privacy screening. Retrospective planning application approved by Kensington and Chelsea Council.

 

4D Planning's role

4D Planning were instructed to assist the client with securing retrospective planning permission for alterations carried out to an upper maisonette located at 76 Lancaster Road, W11, close to Portobello Road in the Royal Borough of Kensington and Chelsea. 

The development involved the replacement of an existing rear window with an access door in order to provide access onto a flat roof which was proposed to be used as a small private roof terrace. Screening was also installed around the edge of the terrace to provide privacy and security.

The works had already been completed in May 2021 following the Covid pandemic when the occupants sought to create outdoor space within the property. At the time the works were carried out, the applicant was unaware that planning permission was required, and therefore the application was submitted retrospectively. 

Our team prepared the architectural drawings and planning documentation required to support the retrospective application. A planning statement was prepared explaining the planning context and demonstrating that the terrace would not cause unacceptable harm to neighbouring amenity.

The proposed terrace area measured approximately 6.3m2, providing a modest private outdoor space for the flat. The small size of the terrace helped demonstrate that the space would be used as a quiet amenity area rather than a space likely to generate noise or disturbance. 

We also addressed privacy concerns by explaining the role of the screening installed around the terrace. The screening and planters were designed to provide privacy for both the occupants of the flat and neighbouring residents.

By presenting a clear planning justification and demonstrating that the development would not harm neighbouring amenity or the character of the area, planning permission was successfully granted by Kensington and Chelsea Council.

 

 

Roof Terrace Planning Permission in Kensington and Chelsea

Roof terraces are commonly proposed for flats and maisonettes in London where outdoor space at ground level is limited. However, planning permission is often required because roof terraces can potentially result in overlooking or privacy concerns for neighbouring properties.
Local planning authorities such as Kensington and Chelsea typically assess roof terrace proposals carefully to ensure that they do not create unacceptable impacts on neighbouring amenity or the surrounding area.

In this case the property is an end of terrace building located on Lancaster Road near Portobello Road. The application related to the upper maisonette which occupies the top two floors of the building. 

Importantly, the building is not listed and is not located within a conservation area, which simplified the planning assessment. 

The presence of other roof terraces within the surrounding terraces also helped demonstrate that the proposal was consistent with the character of the area.

 

Retrospective Planning Permission for Roof Terraces

In some cases property owners undertake works before obtaining planning permission. Where this occurs a retrospective planning application can be submitted in order to regularise the development.

A retrospective application is assessed in the same way as a normal planning application. The local authority will consider whether the development complies with planning policy and whether it causes harm to neighbouring properties or the wider area.

In this case the roof terrace works were undertaken in good faith by the applicant during the Covid period when the need for private outdoor space became particularly important for many residents living in flats.

The planning submission demonstrated that the terrace provided the only outdoor amenity space available to the occupants of the flat, which strengthened the planning justification for the proposal. 

 

Replacing a Rear Window with an Access Door

Replacing an existing rear window with an access door may appear to be a relatively minor alteration. However, planning permission can be required where the change alters the external appearance of the building or allows access to a roof terrace.

In this case the new door was designed to match the width of the existing window and was accessed from the staircase landing of the flat via a small step. This helped minimise the visual impact of the alteration while providing practical access to the terrace area.

 

Planning Considerations for Roof Terraces

When assessing roof terrace proposals, planning officers typically consider several key issues.

Overlooking and Privacy

One of the main planning concerns associated with roof terraces is the potential for overlooking neighbouring properties.
In this project the terrace was modest in size and screening was installed around the edge of the terrace to provide privacy. The applicant also indicated that additional planting or trellis screening could be installed if required by the council. 


Size of the Terrace

The terrace area measured approximately 6.3m2, which is relatively small. This helped demonstrate that the terrace would be used as a private amenity space rather than a large entertaining area likely to generate noise.


Character of the Area

There are several roof terraces along the terrace and adjoining terraces in the surrounding area. This helped demonstrate that the proposal was consistent with the established character of the neighbourhood.

 

The Importance of Outdoor Amenity Space

The Covid pandemic highlighted the importance of access to private outdoor space, particularly for residents living in flats. During lockdown periods many residents were confined to their homes without access to gardens or outdoor areas.

Providing small roof terraces for flats can significantly improve living conditions and contribute to the overall quality of residential accommodation.

Planning policy generally supports improvements to residential accommodation where they do not cause harm to neighbouring properties or the surrounding area.

 

The Value of Professional Planning Advice

Projects involving roof terraces can appear straightforward but often require planning permission due to overlooking and design considerations.

Obtaining professional planning advice at an early stage can help identify potential issues and develop a planning strategy that addresses council concerns.

A planning consultant can review the site context, prepare architectural drawings and supporting planning statements and manage the planning application process on your behalf.

With the right approach it is often possible to secure planning permission for roof terrace developments that enhance the usability of a property while protecting neighbouring amenity.

At 4D Planning, we advise our clients on the feasibility of obtaining planning permission for a roof terrace, and when feasible, we prepare professional and convincing planning applications. 4D Planning have a track record of successful projects in RBKC and would welcome the opportunity to provide a free quote for your project. Contact us today for a free quote and consultation. 

 

Frequently Asked Questions

Do roof terraces require planning permission in Kensington and Chelsea?

Roof terraces always require planning permission because councils must assess issues such as overlooking, privacy and visual impact on neighbouring properties.


Can you replace a rear window with an access door?

Replacing a window with a door can require planning permission where the alteration affects the external appearance of the building or enables access to a roof terrace.


What is retrospective planning permission?

Retrospective planning permission is an application submitted after development works have already been carried out. The council will assess whether the completed works comply with planning policy.

 

or

Let's discuss how we can help you on your next project

Get in touch today to speak to a Chartered Planning Consultant for a free no-obligation quote

 

Message Us NowMessage Us
Online