Planning applications in Hillingdon, July 2026

7 MAHLON AVENUE RUISLIP

Erection of single storey secondary rear extension to the rear of an existing side and rear extension. (Retrospective Planning Application).

21 RAYNTON DRIVE HAYES

Erection of a part single part two storey rear extension.

9 HARWOOD DRIVE HILLINGDON MIDDLESEX UB10 OBG

Erection of single storey rear extension (Application for a Certificate of Existing Use for an Existing Development)

124 HILLIARD ROAD NORTHWOOD

Conversion of roof space to habitable use to include a rear dormer and 1no. front roof light (Application for a Certificate of Lawful Development for a Proposed Development)

13 CHERRY GROVE UXBRIDGE

Erection of a single storey rear extension

HARTFIELD PLACE HIGH STREET NORTHWOOD

Change of use from Class E(g)(i) to Class C3 (2 x dwellinghouses and 3 x flats), which includes the demolition of the existing single storey commercial office building, and the erection of 3 new flats (1 x 3-bed and 2 x 1-bed) and two dwellinghouses (2 x 2-bed) with associated car parking, cycle and bin storage.

34 COPSE WOOD WAY NORTHWOOD

TPO 400 A1 1x Oak reduce branches up to 3m and 15% reduction over entire canopy.

94 SWAKELEYS DRIVE ICKENHAM MIDDLESEX UB10 8QG

TPO 98 A1 multi stemmed Sycamore to section dismantle to approx 4-5m poles.

LAND LYING TO THE NORTH WEST OF HAREFIELD ROAD UXBRIDGE UB8 1PW

Use of land for parking and storage (Application for a Certificate of Lawful Development for an Existing Use)

50 KINGSEND RUISLIP

Erection of a single storey rear extension, following the demolition of the existing outbuilding in the rear garden.

9 ST MARGARETS AVENUE HILLINGDON MIDDX UB8 3HH

Details pursuant to the discharge of Conditions 8 (BNG) and 13 (sustainable water management), together with partial discharge of Condition 12 (land contamination) of planning permission ref. 58841/APP/2026/547, dated 15-05-26 (Erection of 2no. dwellinghouses with associated landscaping, parking, cycle and bin storage, following the demolition of the existing bungalow.)

21 NORTH AVENUE HAYES UB3 2JE

Erection of part single storey, part double storey rear extension

23 DAYMER GARDENS EASTCOTE PINNER

Non-material amendment to planning permission ref. 45997/APP/2025/1729, dated 13-08-25 (Variation of Condition 2 (approved plans) of planning permission ref. 45997/APP/2025/335, dated 07-04-25 (Erection of a part two storey part single storey rear and side extensions, following the demolition of existing conservatory and detached garage) to install 4no. roof lights) to retain the existing ground floor window, remove the two existing first-floor windows and replace them with a single first-floor window, and remove the existing chimney from the roof.

25 NEW ROAD HARLINGTON

Details pursuant to the discharge of Conditions 4 (Landscape Scheme), 8 (BNG) and 10 (Sustainable Water Management) of planning permission ref. 5548/APP/2024/2826, dated 07-01-2026 (Erection of 9 dwellings (7no. 3-bed and 2no.2-bed) with associated hard and soft landscaping, amenity, parking and cycle stores following demolition of existing dwelling and associated buildings (amended description)).

30 GLENALLA ROAD RUISLIP

Erection of single storey side and rear extensions following demolition of the existing detached garage and rear outbuilding and associated installation of two roof lights

64 HOLLYWOOD GARDENS HAYES UB4 0DY

Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.20 metres, and for which the height of the eaves would be 2.90 metres

Hayes Bridge Retail Park and Heathrow Interchange UXBRIDGE ROAD HAYES UB4 0RH

Approval of Reserved Matters (Access, Appearance, Landscaping, Layout and Scale) pursuant to Condition 2 for Phase 2 (Innovation Hub) only, details pursuant to the partial discharge of Conditions 47 (i) (Phase 2: Innovation Hub - Contaminated Land), 53 (i) (Phase 2: Innovation Hub - Public Art) and details pursuant to the full discharge of Conditions 48 (Phase 2: Innovation Hub - Written Scheme of Investigation), 50 (Phase 2: Innovation Hub - Water Infrastructure Details), 59 (Phase 2: Innovation Hub - Biodiversity Net Gain), 64 (Phase 2: Innovation Hub - Generator and Fuel Technology), 65 (Phase 2: Innovation Hub - Selective Catalytic Reduction), 66 (Phase 2: Innovation Hub - Generator Operating Regime), 67 (Phase 2: Innovation Hub - Emission Reduction and Management Plan), 68 (Phase 2: Innovation Hub - Emissions Monitoring Plan) and 76 (Phase 2: Innovation Hub - Generator Emission Evidence) as attached to planning permission ref. 78343/APP/2025/719, dated 20-05-2026 (Hybrid planning application for a four-phased redevelopment to deliver a data centre campus comprising of: Phase 1 - Full planning permission for (a) a data centre building; (b) energy, power, and water infrastructure; (c) site access and internal roads including a vehicular and pedestrian link between Uxbridge Road and Bullsbrook Road; (d) site security arrangements and security fencing; (e) hard and soft, green and blue, infrastructure; and (f) other ancillary and auxiliary forms of development; Phase 2 - Outline planning permission for (a) an Innovation Hub; (b) hard and soft, green and blue, infrastructure; and (c) other ancillary and auxiliary forms of development (all matters reserved); Phase 3 - Outline planning permission for (a) a data centre building; (b) energy, power, and water infrastructure; (c) internal roads; (d) site security arrangements and security fencing; (e) hard and soft, green and blue, infrastructure; and (f) other ancillary and auxiliary forms of development (all matters reserved); and Phase 4 - Outline planning permission for (a) a data centre building; (b) energy, power, and water infrastructure; (c) internal roads; (d) site security arrangements and security fencing; (e) hard and soft, green and blue, infrastructure; and (f) other ancillary and auxiliary forms of development (all matters reserved).) This is a subsequent application for development subject to an Environment Impact Assessment.

4 LINSLADE CLOSE PINNER HA5 2BJ

Conversion of roof space to habitable use to include a rear dormer extension and front facing roof lights (Application for a Certificate of Lawful Development for a Proposed Development)

59 MARVELL AVENUE HAYES

Erection of a single storey rear extension

45 THE GREENWAY UXBRIDGE

Erection of a single storey side/rear extension, and part first floor extension

62 STATION ROAD HAYES UB3 4DF

A change of use of the first floor from Class E (Financial Services) to Class C3 (Residential) to create 6 residential units, together with alterations to the access arrangements, fenestration, cycle parking and waste storage.

29 CLAMMAS WAY COWLEY UB8 3AN

Details pursuant to the discharge of Condition 7 (step free access) of planning permission ref. 77795/APP/2025/2979, dated 27-04-26 (Erection of 2x two storey, 3 bed dwelling with associated parking, amenity space, cycle and refuse stores, following the demolition of existing bungalow)

5 IVY CLOSE EASTCOTE MIDDLESEX HA5 1PU

Erection of a single storey rear extension

18 NORTHWOOD WAY NORTHWOOD

Erection of a single storey rear/side wraparound extension and conversion of garage into habitable space with a rear patio towards the garden.

75 HARTLAND DRIVE RUISLIP

Conversion of roof space to habitable use to include a rear dormer with Juliette balcony and 2no. front roof lights (Application for a Certificate of Lawful Development for a Proposed Development)

168 GROSVENOR CRESCENT UXBRIDGE UB10 9EZ

Erection of a Single Storey Rear Extension

201 ASH GROVE HAREFIELD MIDDLESEX UB9 6HA

Erection of a single-storey rear infill extension following demolition / alteration of the existing rear projection arrangement, together with associated internal alterations

14 CAMPDEN ROAD ICKENHAM

Conversion of roof space to habitable use to include a rear dormer, 3x front roof lights, conversion of roof from hip to gable end. (Application for a Certificate of Lawful Development for a Proposed Development)

60 LAUREL LANE WEST DRAYTON

Erection of a part double storey, part single storey side and part rear extension

UNIT B Prologis Park STOCKLEY ROAD WEST DRAYTON UB7 9FN

Non-material amendment to planning permission ref. 18399/APP/2026/586, dated 05-06-2026 (Additional access into the site at the front, with widening of the existing access road with fencing; erection of a canopy and welfare unit to the front; lowered concrete yard area with 3 x dock doors and wheel guides; 1 x level loading door; installation of fencing and bollards, and an additional waste area) to amend the height of the approved canopy, removal of ramp and installation of stairs, and the installation of a new arm barrier.

25 SIPSON ROAD WEST DRAYTON MIDDX UB7 9DQ

Erection of a single storey extension to the rear

32 HILLCROFT CRESCENT RUISLIP

Conversion of roof space to habitable use including a rear dormer and 1no. front facing roof light.

395 FIELD END ROAD RUISLIP

Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.40 metres, and for which the height of the eaves would be 3.00 metres.

FOUR WINDS PARK ROAD UXBRIDGE

Erection of a two storey side extension, erection of a two storey front extension, conversion of roof space to habitable use to include roof lights, following the demolition of existing garage

47 CASTLE AVENUE YIEWSLEY

Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 3.90 metres, for which the maximum height would be 3.00 metres, and for which the height of the eaves would be 3.00 metres

22 CRANBORNE WAYE HAYES

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

28 BREAKSPEAR ROAD RUISLIP

Conversion of roof space to habitable use to include a rear dormer, roof lights, and conversion of roof from hip to gable end, and the erection of a single storey side extension (Application for a Certificate of Lawful Development for a Proposed Development)

31 MANOR ROAD HAYES

Erection of 1 x 1 bedroom dwelling with associated parking, amenity space on land adjacent to the existing dwelling and the erection of a part single storey, part double storey rear extension, followed by the demolition of existing conservatory and garage.

197 WOODROW AVENUE HAYES

Erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 4.00 metres, for which the maximum height would be 3.20 metres, and for which the height of the eaves would be 2.95 metres.

71 GLAMIS CRESCENT HAYES

Erection of outbuilding (Application for a Certificate of Lawful Development for a Proposed Development)

197 WOODROW AVENUE HAYES

Single storey detached outbuilding at rear of the garden (Application for a certificate of lawful development for a proposed development)

22 CLEMENT GARDENS HAYES

Erection of outbuilding

63 ELM AVENUE RUISLIP HA4 8PG

Conversion of roof space to habitable use to include a rear dormer, roof lights, conversion of roof from hip to gable end, erection of a single storey side extension, erection of outbuilding to the rear garden (Application for a Certificate of Lawful Development for a Proposed Development).

2 HEATHERFOLD WAY PINNER HA5 2LG

Erection of a single storey extension to the rear, erection of a two storey extension to the side, conversion of roof space to habitable use to include a rear dormer, and front roof lights

26 GREAT CENTRAL AVENUE RUISLIP HA4 6UE

Conversion of garage to habitable space including a raised flat roof and the replacement of garage door with window (Application for a Certificate of Lawful Development for a Proposed Development)

27 TO 42 PHILPOTS CLOSE YIEWSLEY UB7 7RX

TPO 226 T15 1x Sycamore Tree to reduce the crown by 2 metres and drop crotch in the heavily extended limb towards the property and remove all major deadwood. Previous App: 6775/TRE/2026/74

150 DORCHESTER WAYE HAYES

Retention of Class C4 dwelling (Application for a Certificate of Lawful Development for an Existing Use)

6 SQUIRRELS TRADING ESTATE VIVEASH CLOSE HAYES UB3 4RZ

Change of use from Class B8 to Class E retail

THE HAREFIELD ACADEMY, LORD ADONIS HOUSE NORTHWOOD WAY HAREFIELD UB9 6ET

Details pursuant to the discharge of Conditions 16 (Road safety audit), 23 (Verification Suds), 26 (Parking Design and Management Plan), 27 (Delivery servicing plan) and 28 (Drop Off Collection Points) of planning permission ref. 17709/APP/2023/2673, dated 08-02-2024 (Demolition of former residential school and erection of academic building (Use Class F1) and ancillary structures including heat pump and substation enclosures, construction of a multi-use games area, revised vehicular access, landscaping, car and cycle parking and associated works.)

148 WEST END ROAD RUISLIP

Installation of a dropped kerb to the front