Planning application
P/2025/3669
Haslemere Heathrow Estate, Silver Jubilee Way, Hounslow, TW4 6NF
Proposal
Outline planning permission with all matters reserved except access. A demolition phase and phased redevelopment (each phase being an independent act of development) comprising data centre use (Use Class B8) of up to 50,000 sqm GEA, including ancillary offices, internal plant and equipment (including flues), and substation. In addition up to 4,150sqm GEA of work units (Use Class E(g)(i-iii), B2, B8); car parking; provision of external plant and equipment (including flues); creation of servicing areas and provision of associated services, including waste, refuse, cycle storage, and lighting; and for the laying out of the buildings; routes and open spaces within the development; and all associated works and operations including but not limited to: demolition; earthworks; provision of attenuation infrastructure, engineering operations. This application is for a phased development, each phase being an independent act of development, capable of coming forward in distinct and separable phase... read more
As published by the council, reference P/2025/3669
Timeline
Dates from the published record
-
10 Dec 2025
Received by Hounslow
-
26 Jul 2026
Added to PlanIndex
-
30 Jul 2026
Status changed to REGISTERED: Pending recommendation
Previously REGISTERED: Under Assessment.
-
Decision
Awaiting decision
The statutory target is eight weeks for most applications and thirteen for major development. Extensions of time are common.
What happens while it is decided
The process from here
This application is with Hounslow for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.
The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.
About outline applications
How this application type works
An outline application tests the principle of developing a site before the detail is worked up. Some or all of the particulars, such as appearance, layout, scale, access and landscaping, are held back as reserved matters for later approval. Permission at outline stage does not by itself allow building to start; the reserved matters must be approved first.
Nearby applications
Within 500 metres
-
P/2023/0130 Granted
LAND AT 150 - 152 GREAT SOUTH-WEST ROAD, HOUNSLOW, TW4 6JS
Details submitted pursuant to Condition 13 (District Heating Network) for planning permission 00504/150-152/P11 dated 16/08/2021for Erection of a self-storage unit (Class B8 use) with associated car and cycle parking and landscaping
-
P/2023/0306 Granted
LAND AT 150-152 GREAT SOUTH-WEST ROAD, HOUNSLOW, TW4 6JS
Details of condition 14 (car park management plan) submitted pursuant of planning permission 00504/150-152/P11 dated 16/08/2021 for erection of a self-storage unit (Class B8 use) with associated car and cycle parking and landscaping.
-
P/2026/2176 Awaiting decision
332 Beavers Lane, Hounslow, TW4 6HJ
Erection of a single storey rear extension.
-
PA/2026/1683 Granted
12 Byron Avenue, Hounslow, TW4 6LX
Ground floor rear extension 6.00 metres deep, maximum height 3.30 metres, 2.90 metres high to the eaves.
-
PA/2026/1798 Awaiting decision
42 Byron Avenue, Hounslow, TW4 6LX
Ground floor rear extension 6.00 metres deep, maximum height of 3.30 metres, 2.80 metres high to the eaves
-
P/2026/0419 Granted
Cranebank Training Centre Silver Jubilee Way, Hounslow, TW4 6JR
Non Material Amendment to revise the Energy Strategy for permission P/2021/2847 dated 15/03/2024 for Demolition of existing buildings and erection of two buildings for flexible industrial use (Class E(g)(iii), Class B2 and B8) with ancillary office space (Class E(g)(i)), erection of a three storey car park, boundary treatment, landscaping, service yards and associated works
Other outline applications
In Hounslow
-
SC/2026/2149 Awaiting decision
LAND AT CHISWICK ROUNDABOUT, CHISWICK, W4 5QJ
Scoping opinion for redevelopment of the site to provide 496 co-living units and 60 C3 affordable units alongside retail offering, play space and a roof level external amenity space, with a maximum height of 24 storeys
-
SRN/2026/2058 Decided
Brentford Community Stadium Lionel Road South, Brentford, TW8 0RU
Screening opinion for the use of the existing stadium for live music events.
-
PAC/2026/2008 Awaiting decision
First Floor, Vine Works, Church Street, Chiswick, London, W4 2PD
Prior Approval for change of use of the existing building's first floor office (Use Class E) to a self-contained two person, one bedroom flat (Use Class E).
-
PA/2026/1927 Awaiting decision
Thames Works, Church Street, Chiswick, London, W4 2PD
Prior approval for the installation of 14 roof mounted solar photovoltaic (PV) panels to the existing pitched roof on the buildings Northwest elevation.
-
PAC/2026/1120 Granted
Saracen House, Swan Street, Isleworth, TW7 6RJ
Prior approval for the change of use of the first and second floors only of Saracen House from office use (Use Class E) to nine self contained flats (Use Class C3)