Planning application
W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire
Works: Demolition
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Outline application (with all matters reserved except for means of access) for the demolition of buildings on site and erection of up to 185 homes (including 50% affordable housing) alongside access, landscaping, car parking and associated works.
As published by the council, reference 26/0988/OUT
Application record
- Reference
- 26/0988/OUT
- Category
- Outline
- Status
- Awaiting decision
- Received
- 17 Jul 2026
- Validated
- 17 Jul 2026
- Ward
- Shenley
- Parish
- The Parish Council South Mimms And Ridge
Site history
Applications at this address on the Hertsmere register
This site has had 2 applications since 2022: 1 approved, 0 refused.
-
22/0876/FUL Granted
W Block Clare Hall Laboratories Blanche Lane South Mimms Hertfordshire
Erection of two new buildings within the grounds and an extension to the W-Block for research and development use (Class E), car parking, servicing, landscaping and associated works.
Timeline
Dates from the published record
-
17 Jul 2026
Received by Hertsmere
-
1 Aug 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 11 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.
Hertsmere took a median of 59 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
Newmark Gerald Eve LLP Agent, registered in London
Active · incorporated 2008 · London
181 applications on PlanIndex · across 17 councils · 91% granted
Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.
See their track recordDocuments
Plans, drawings, consultee responses and the officer's report
96 documents on file for this application
- Llfa
- Ecology
- Herts fire and rescue service
- Llfa comments
- Built heritage response
- Hp comment
- Environmental protection comments
- Hcchp comment
- Tvw comment
- Bst comment
- National highways comments
- Environment agency comment
- Ea comments
- Lvia summary table
- Arch comment
- Forestry commission comment
- Natural england comment
- Natural england comment
- South mimms and ridge parish council
- Cllr hodgson-jones response
- Growth and infrastructure response
- Met office response
- Active travel england response
- Fire and rescue (hydrants) response
- Bng metric
- Application form redacted
- Existing site levels plan
- Existing site plan
- Existing site survey plan 6
- Land use parameter plan
- Movement network plan
- Proposed site levels plan 1
- Proposed site levels plan 2
- Site location plan
- Building heights parameter plan
- Development plots parameter plan
- Existing site survey plan 1
- Existing site survey plan 2
- Existing site survey plan 3
- Existing site survey plan 4
- Existing site survey plan 5
- Open space parameter plan
- Illustrative green and blue infrastructure plan
- Drawing schedule
- Illustrative landscape masterplan
- Site access parameter plan
- Illustrative site layout plan
- Illustrative scheme unit schedule
- Commercial letter
- Air quality assessment
- Dust assessment
- Ecological impact assessment
- Biodiversity net gain assessment
- Landscape and ecological management plan
- Landscape and visual impact assessment
- Design code part 3
- Design code part 1
- Design code part 2
- Interim travel plan
- Arboricultural impact assessment drawings
- Tree survey and arboricultural impact assessment
- Agricultural land classification report
- Statement of community involvement
- Economic statement
- Transport assessment part 2
- Transport assessment part 3
- Transport assessment part 4
- Transport assessment part 5
- Transport assessment part 6
- Transport assessment part 7
- Transport assessment part 1
- Affordable housing statement
- Built heritage statement
- Outline sustainability and energy strategy
- Utilities statement
- Phase 1 preliminary risk assessment part 2
- Phase 1 preliminary risk assessment part 3
- Phase 1 preliminary risk assessment part 1
- Design and access statement including landscape strategy part 5
- Design and access statement including landscape strategy part 1
- Design and access statement including landscape strategy part 2
- Design and access statement including landscape strategy part 3
- Design and access statement including landscape strategy part 4
- Archaeological desk based assessment
- Town planning statement
- Drainage and suds strategy part 2
- Drainage and suds strategy part 3
- Drainage and suds strategy part 4
- Drainage and suds strategy part 1
- Flood risk assessment - part 1
- Flood risk assessment - part 2
- Flood risk assessment - part 3
- Residential noise assessment
- Health impact assessment
- Applicant covering letter
- Cil form 1: cil additional information
Trade members open them from here.
Open the documentsWhat happens while it is decided
This application is with Hertsmere for determination, against a statutory target of eight weeks. Over the last year Hertsmere decided outline applications in a median of 37 days. More in our guide to how long planning decisions take.
About outline applications
An outline application tests the principle of developing a site, holding back details such as appearance and landscaping as reserved matters for later approval. More in our guide to planning application types.
Other outline applications
In Hertsmere
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26/0962/EI2 Decided
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Request for a scoping opinion (Environmental Impact Assessment).
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25/1379/OUT Granted
Fields Theobald Street Radlett Hertfordshire WD7 7LS
Demolition of dwelling (Use Class C3) to provide 4x new dwellings (Use Class C3). Outline planning application (with all matters reserved except access).
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26/0838/EI1 Granted
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Request for screening opinion (Environmental Assessment - Screening).
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25/1105/OUT Granted
44 Barnet Road Potters Bar Hertfordshire EN6 2QU
Demolition of existing detached two storey mixed use building to facilitate construction of four storey mixed use building with accommodation in the roof space providing 11x flats and 2x ground floor commercial units. Associated hard and soft landscaping and bin / cycle storage. (Outline application with all matters reserved).
-
26/0723/EI1 Granted
Land To The West Of Swanland Road South Mimms Hertfordshire
Request for screening opinion (Environmental Assessment - Screening) - Proposed development of a solar farm, including associated ancillary infrastructure and development and landscape and environmental enhancements