Status: Approval

Erection of a part single storey, part two storey extension to the rear.

Request for agreement of a Site Restoration Scheme of land between Hillingdon Outdoor Activity Centre and Harefield Lake no.2, in proximity to the Colne Valley Viaduct and its associated construction works, in accordance with Paragraph 5(1) of Schedule 16 to the High Speed Rail (London - West Midlands) Act 2017.

Details pursuant to the discharge of Conditions 3 (Materials) and 4 (Landscape Scheme) of planning permission ref. 15348/APP/2021/615, dated 14/10/2022 (Addition of a storey to provide 5 flats with rooftop amenity space and associated works).

Details pursuant to the discharge of Conditions 10 (Details of Chiller Plant) and 11 (Details of Generator Plant) as attached to planning permission reference 18399/APP/2025/16 dated 01-09-2025 (An application submitted under Section 73 of the Town and Country Planning Act 1990 to vary Conditions 2 (Approved Drawings) and 3 (Compliance with supporting documentation) of planning permission reference 18399/APP/2022/411, dated 03-05-2023 (Installation of plant and equipment to unit DC6 including external plant equipment, external louvres and associated security fencing and landscaping, to facilitate use of the building as a data centre) to make changes to the design of the development.).

Details pursuant to the discharge of Condition 3 (Replacement Window Details) of planning permission ref. 56257/APP/2022/3336, dated 06-01-2025 (Replacement of front and rear windows and tree removal.)

Changing flat roof to pitch roof to the front extension and garage, replacing garage door with a window, creating entrance porch, insulating and rendering external walls (Amendments to Planning Permission Ref: 32191/APP/2025/347, dated 11-04-25, Erection of single storey front and rear extensions and first floor side extension)

Details pursuant to the discharge of Condition 36 (District Heating Strategy) as attached to planning permission ref. 5111/APP/2022/1007 dated 21-09-2022 (Full planning permission for site clearance and preparation, including the demolition of remaining buildings, and the redevelopment of the site to provide three energy centres, two visitor reception centres, a new footpath and cycleway link to the canal towpath, works to the highway, car parking, cycle parking, associated infrastructure, enclosures and necessary physical security systems, hard and soft landscaping, and ancillary uses, as well as associated external works).

Conversion of roof space to habitable use to include a rear dormer, 2 x front roof lights and conversion of roof from hip to gable end with new gable end window (Application for a Certificate of Lawful Development for a Proposed Development)

Erection of a part single storey, part two storey extension to the rear and side

Conversion of roof space to habitable use to include a rear dormer/outrigger side dormer, 1 x front rooflight, 1 x flat roof rear rooflight and removal of existing chimney (Application for a Certificate of Lawful Development for a Proposed Development)

Details pursuant to the discharge of Condition 41 (District Heating Strategy) as attached to planning permission ref. 75111/APP/2020/1955 dated 15-04-2021 (Site clearance and preparation, including the demolition of remaining buildings, and the redevelopment of the site to provide: a new data centre (Use Class B8), two MV Energy Centres (including stand-by generation plant and gas storage), a HV Sub-Station, a visitor reception centre, plant, the creation of a new footpath and cycleway link to the canal towpath, works to the highway, car parking, cycle parking, associated infrastructure, enclosures and necessary physical security systems, hard and soft landscaping (including works to the River Crane) and ancillary uses, as well as associated external works).

Details pursuant to the partial discharge of Conditions 28 (Contaminated Land), 30 (EA - Verification Report) and 34 (EA - Decommissioning of Boreholes) in relation to Energy Centre Blocks 2 and 3 (EC2 and EC3) and Visitor Reception Centre 2 (VRC2) only as attached to planning permission ref. 5111/APP/2022/1007 dated 21-09-2022 (Full planning permission for site clearance and preparation, including the demolition of remaining buildings, and the redevelopment of the site to provide three energy centres, two visitor reception centres, a new footpath and cycleway link to the canal towpath, works to the highway, car parking, cycle parking, associated infrastructure, enclosures and necessary physical security systems, hard and soft landscaping, and ancillary uses, as well as associated external works).

Installation of a ventilation louvre to the rear elevation to use the unit as a restaurant under Class E.

Conversion of roof space to habitable use to include rear dormer, 2x front roof lights, Juliette balcony to rear, and erection of outbuilding to rear garden (certificate of lawful development)

Details pursuant to the partial discharge of Conditions 31 (Contaminated Land), 34 (EA - Verification Report) and 38 (EA - Decommissioning of Boreholes) in relation to Data Centre Blocks 2 and 3 (UP2 and UP3) only as attached to planning permission ref. 75111/APP/2020/1955 dated 15-04-2021 (Site clearance and preparation, including the demolition of remaining buildings, and the redevelopment of the site to provide: a new data centre (Use Class B8), two MV Energy Centres (including stand-by generation plant and gas storage), a HV Sub-Station, a visitor reception centre, plant, the creation of a new footpath and cycleway link to the canal towpath, works to the highway, car parking, cycle parking, associated infrastructure, enclosures and necessary physical security systems, hard and soft landscaping (including works to the River Crane) and ancillary uses, as well as associated external works).

Conversion of integral garage to habitable accommodation, amendments to fenestration.

Erection of a single storey outbuilding including removal of existing shed

Erection of a single storey rear extension (Application for a Certificate of Lawful Development for a Proposed Development)

Details pursuant to the discharge of Conditions 5 (Landscaping), 6 (Construction Management Plan), 7 (Step Free Access), 8 (Sustainable Water Management) and 9 (Biodiversity Net Gain Plan) of planning permission ref. 79103/APP/2025/666, dated 12-05-2025 (Erection of a 2-bedroom, 3-person dwelling with private amenity space , refuse area and car parking. Erection of a first-floor extension to the rear and loft conversion including hip to gable extension, rear dormer and front rooflights to the existing dwelling (amended description)).

Installation of 1no. internally illuminated fascia sign and 1no. internally illuminated projecting sign.

Details pursuant to the discharge of Conditions 3 (Materials) and 4 (Landscaping) of planning permission ref. 6440/APP/2023/2382 dated 12-04-2024 (Erection of single storey extensions to existing changing rooms to both the side (north) and the rear (west). Erection of a pitched roof over the existing flat roof to the changing areas. Installation of an external servery hatch and 2 no. doors to the rear elevation. Fenestration changes).

Erection of outbuilding to rear garden, following the demolition of existing outbuilding (Amended Description)

Erection of a single storey extension to the rear, erection of outbuilding, following the demolition of existing outbuilding

Existing use of building as a Dwellinghouse (Use Class C3) (Application for a Certificate of Lawful Development for an Existing Use).

Conversion from a residential dwellinghouse (Class C3) to a 6-bed HMO (Class C4) (Application for a Certificate of Lawful Development for a Proposed Use)