Planning application
Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Non Material Amendment to planning permission 25/00893/FPM for additional Substation 3 within the Detailed Area, amendments to extent of Detailed / Outline Areas and landscaping, additional Meanwhile Use / Landscape Areas and amendments to conditions
As published by the council, reference 26/00578/NMA
Application record
- Reference
- 26/00578/NMA
- Category
- Amendments
- Status
- Awaiting decision
- Received
- 3 Aug 2026
- Validated
- 3 Aug 2026
- Postcode
- SG1 2FX
Timeline
Dates from the published record
-
3 Aug 2026
Received by Stevenage
-
7 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 28 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
What happens while it is decided
The process from here
This application is with Stevenage 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 amendments applications
How this application type works
An amendment application changes a permission that already exists. Non-material amendments cover small adjustments with no wider effect, while minor material amendments, usually made by varying a condition, allow modest design changes without a fresh application. Anything beyond that needs a new permission, so the scope here is deliberately narrow.
Nearby applications
Within 500 metres
-
Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX
92% historically approved · decision due ~9 Feb
Installation of freestanding internally illuminated sign on concrete plinth
Decided -
Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX
100% historically approved · decision due ~9 Feb
Installation of freestanding internally illuminated sign on concrete plinth
Decided Full applications -
Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX
92% historically approved · decision due ~12 Oct
Request to modify the S106 Legal Agreement dated 30 May 2024 in relation to obligations (2.1.1 & 2.1.2) in relation to highways matters approved under planning permission 23/00293/FPM & 25/00893/FPM
Awaiting decision -
Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX
92% historically approved · decision due ~30 Dec
Non-material amendment to planning permission 23/00293/FPM comprising changes to description of development and amendments to wording of conditions 8, 10, 49, 50 and 51.
Decided Amendments -
Glaxo SmithKline Research And Development Ltd Gunnels Wood Road Stevenage Herts SG1 2FX
92% historically approved · decision due ~3 Aug
Non-material amendment to planning approval 23/00249/FP for minor revisions to the roof and parking layout of the security lodge
Decided Amendments -
Land Adjacent To GSK Campus Gunnels Wood Road Stevenage Herts SG1 2FX
92% historically approved · decision due ~13 Feb
Application for Planning Permission for Development without Compliance with Conditions 1, 2, 3, 4, 8, 10, 13, 16, 19, 20, 21, 22, 23, 24, 25, 31, 32, 38, 40, 41, 42, 43, 45, 46, 49, 50, 51, 52, 53, attached to planning permission reference number 23/00293/FPM for Hybrid Planning Application for a new Life Sciences Campus comprising of Full planning permission for the demolition of existing ancillary buildings, structures, erection of employment floorspace (Classes E(g)(ii) and (iii), B2 and B8, with provision for Class E uses at ground, lower ground and upper ground/mezzanine floors) revised junction arrangement (A602 and Gunnels Wood Road) and alterations to the site layout to include new car parking (including a multi storey car park), internal access and associated works (such as new utilities (including new substations), drainage and infrastructure hard and soft landscaping and introduction of sustainable transport facilities) and Outline planning permission for the demolition of existing ancillary buildings/structures, erection of employment floorspace (Classes E(g)(i) to (iii), B2 and B8, with provision for an ancillary auditorium, and Class E uses at ground floor) and Amenity Hub (Classes E and B2), provision of car parking (including multi storey car park(s)) and associated works (such as new access, utilities, drainage, infrastructure and hard and soft landscaping), with all matters reserved for subsequent approval.
Decided Demolition
Other amendments applications
In Stevenage
-
26/00615/NMA Decided
Maxwell Road Stevenage Herts SG1 2EW
Non-Material amendment to planning approval 25/00400/FPM to Condition 9 (External Lighting)
-
26/00611/NMA Decided
44 Haycroft Road Stevenage Herts SG1 3JJ
Non-Material Amendment to planning permission reference 18/00038/FPH to amend the approved external materials, with consequential amendments to conditions 3 and 4.
-
26/00489/NMA Decided
The Oval Stevenage Herts SG1 5LW
Non material amendment to planning approval 23/00954/FPM relating to landscaping, elevational alterations and car park access for Parcel E.
-
26/00459/NMA Decided
10 Hillside Stevenage Herts SG1 1PX
Non-material amendment to planning approval 24/00609/FPH in relation to Condition 3 (Matching Materials)
-
26/00451/NMA Decided
58 - 90 Queensway And Forum Chambers Town Centre Stevenage Herts SG1 1EE
Non-material amendment to planning approval 23/00502/FPM to Condition 16 (Noise Assessment 1); Condition 17 (Noise Assessment 2) and Condition 18 (Noise Assessment 3)