The London Borough of Hillingdon stretches from established suburban neighbourhoods in the east to villages, countryside and Green Belt land on the edge of Greater London. It also contains Heathrow Airport, major transport routes, employment areas and several locations undergoing continued redevelopment.

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This varied setting means that Hillingdon planning applications cannot all be approached in the same way. A rear extension in Ruislip may raise very different issues from a property conversion in Hayes, a replacement dwelling in Northwood or development close to Heathrow.

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The borough includes Uxbridge, Hayes, West Drayton, Yiewsley, Ruislip, Eastcote, Northwood, Ickenham, Hillingdon, Cowley, Harefield, Harmondsworth, Sipson, Harlington and parts of Yeading. Property types range from suburban houses and historic cottages to flats, commercial buildings, airport-related premises and larger development sites.

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Common Planning Projects in Hillingdon

 

Many applications in Hillingdon concern improvements or alterations to existing homes. These may include:

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• Rear, side and wraparound extensions

• Loft conversions and roof alterations

• Replacement windows and external doors

• Porches, garages and garden buildings

• Property conversions and additional flats

• New homes on infill or garden sites

• Changes of use

• Commercial alterations

• Retrospective applications

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In areas such as Ruislip, Eastcote, Ickenham, Northwood and Hillingdon, proposals are often judged against the established scale and spacing of surrounding homes. Oversized extensions, prominent roof alterations and development that appears cramped or out of character may require careful redesign.

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Hayes, West Drayton, Yiewsley and Uxbridge contain a broader mix of housing, commercial premises, transport infrastructure and redevelopment sites. Applications in these areas may involve new flats, mixed-use buildings, employment land, changes of use and larger residential schemes.

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Heathrow and Airport-Related Planning Considerations

 

Heathrow has a major influence on development in the southern part of the borough. Properties in and around Harmondsworth, Sipson, Harlington, Cranford, Heathrow Villages and West Drayton may be affected by airport safeguarding, noise, transport, air quality or building-height considerations.

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A planning proposal close to Heathrow may therefore need to address issues that would be less significant elsewhere in London.

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Depending on the development, supporting information could include noise assessments, transport details, air-quality information or consultation with airport safeguarding bodies.

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This does not mean that ordinary residential development is impossible, but the location and nature of the site must be considered from the outset.

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Green Belt, Villages and Open Land

 

Hillingdon contains extensive Green Belt, open countryside, waterways and village settings. Harefield, Ickenham, Harmondsworth and the western edges of the borough include areas where openness, landscape character and the separation of settlements can be central planning issues.

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Proposals involving new buildings, replacement homes, major extensions or changes of use in these locations may need to demonstrate that they do not cause unacceptable harm to the Green Belt or the character of the surrounding countryside.

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Trees, waterways, flood risk, agricultural land and protected habitats may also influence what can be developed and the supporting reports required.

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Conservation Areas and Heritage

 

Historic centres, listed buildings and conservation areas can be found in locations including Uxbridge, Harmondsworth, Ickenham, Ruislip and Harefield. Development affecting these areas may require a more detailed design and heritage-led approach.

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Planning controls may affect:

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• Replacement windows and doors

• Roof extensions and dormers

• Front and side extensions

• Boundary walls, railings and gates

• Demolition

• External finishes and materials

• Shopfronts and advertisements

• Changes affecting listed buildings

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Permitted development rights may also be restricted by Article 4 Directions, previous permissions or planning conditions. Work that appears minor may therefore still require formal planning permission in Hillingdon.

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Using the Hillingdon Planning Search

 

The Hillingdon planning search is a useful starting point when researching a property or preparing a new proposal.

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It can be used to:

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• Search applications by address or reference number

• Review existing and proposed drawings

• Read planning statements and supporting documents

• Check whether an application was approved or refused

• View decision notices and planning conditions

• Examine the history of a property or development site

• Review applications made by neighbouring owners

• Follow the progress of a current application

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A Hillingdon council planning search may reveal earlier extensions, conversions, refusals or planning conditions affecting the property.

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This information can help identify local planning concerns, but it should not be treated as a guarantee of approval. Two apparently similar properties may have different planning histories, site constraints, neighbouring relationships or permitted development rights.

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Planning Permission in Hillingdon

 

The correct application route depends on the type of property, the proposed work and the planning restrictions affecting the site.

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Planning permission in Hillingdon may be required for:

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• Extensions that exceed permitted development limits

• Roof alterations and additional storeys

• New homes and replacement dwellings

• Flats and property subdivisions

• Houses in multiple occupation

• Commercial changes of use

• Development in conservation areas

• Work affecting listed buildings

• Retrospective alterations

• Development on Green Belt land

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Some proposals may qualify for permitted development or prior approval instead of a full planning application. A Lawful Development Certificate can provide formal confirmation where the legal status of proposed or existing work needs to be established.

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Preparing a Hillingdon Planning Application

 

Before drawings are prepared, it is important to establish the correct application route. Depending on the project, this may include:

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• Householder planning permission

• Full planning permission

• Prior approval

• Listed building consent

• Advertisement consent

• Change-of-use permission

• Lawful Development Certificate

• Retrospective planning permission

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A complete submission may require:

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• Location and block plans

• Existing and proposed floor plans

• Existing and proposed elevations

• Roof plans and building sections

• Street-scene drawings

• Design and access information

• Heritage or conservation statements

• Daylight and sunlight assessments

• Transport and parking information

• Tree, landscaping or ecology reports

• Drainage, waste or servicing details

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Planning Application Support

 

Planning Application Services (PAS) can assist with planning advice, architectural drawings and the preparation and submission of applications for properties throughout Hillingdon.