Planning application
Grove House 21 Shenley Hill Radlett Hertfordshire WD7 7AT
Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.
Proposal
Construction of single storey outbuilding.
As published by the council, reference 26/0774/HSE
Application record
- Reference
- 26/0774/HSE
- Category
- Householder
- Status
- Awaiting decision
- Received
- 4 Jun 2026
- Validated
- 4 Jun 2026
- Ward
- Aldenham East
- Parish
- Aldenham Parish
- Postcode
- WD7 7AT
Site history
Applications at this address on the Hertsmere register
This site has had 2 applications since 2026.
-
26/0398/HSE Withdrawn
Grove House 21 Shenley Hill Radlett Hertfordshire WD7 7AT
Construction of a single-storey detached garden room to the rear of the existing dwelling. The building has been designed to provide flexible ancillary accommodation to serve the main dwelling, incorporating a golf simulator, pilates studio, kitchen, living/dining area, bedroom, en-suite bathroom, WC, and store.
Timeline
Dates from the published record
-
4 Jun 2026
Received by Hertsmere
-
24 Jul 2026
Added to PlanIndex
-
Decision
Awaiting decision
Decision expected by 30 July 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 58 days over the applications it decided in the last year.
Who's behind it
Company information only, from the register and Companies House
CMI Architecture Limited Agent, an architecture practice registered in Milton Keynes
Active · incorporated 2013 · Milton Keynes
44 applications on PlanIndex · across 8 councils · 94% 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
16 documents on file for this application
- Psear response
- Consultee comment submitted online
- Applicationformredacted
- Attachmentsummary
- Existing site plan
- Location plan
- Proposed site plan
- Proposed floor plan
- Proposed elevations colour
- Street scene elevation
- Arboricultural method statement
- Tree protection plan
- Exceedence routes
- Drainage strategy may 2026 full
- Drainage principles
- Design statement
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 householder applications in a median of 64 days. More in our guide to how long planning decisions take.
About householder applications
Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.
Nearby applications
Within 500 metres
-
Grove House 21 Shenley Hill Radlett Hertfordshire WD7 7AT
Construction of a single-storey detached garden room to the rear of the existing dwelling. The building has been designed to provide flexible ancillary accommodation to serve the main dwelling, incorporating a golf simulator, pilates studio, kitchen, living/dining area, bedroom, en-suite bathroom, WC, and store.
Withdrawn Householder 25 docsSmall domestic -
2 Hillside Road Radlett Hertfordshire WD7 7BH
Construction of single storey side extension (retrospective application).
Granted Householder Extension 11 docsSmall domestic -
2A Aldenham Grove Radlett Hertfordshire WD7 7BN
84% historically approved · decision due ~7 Apr
Demolition of dwelling at 2a and garage at 4 with plot alterations to allow for construction of replacement 6x bed dwelling basement level garage and swimming pool in rear garden. Associated landscaping to include front boundary works and new vehicle access (as amended by plans and documents received on 04.06.2026)
Awaiting decision Full applications Demolition 36 docsDomestic -
-
Hightrees Aldenham Grove Radlett Hertfordshire WD7 7BN
T16 MOUNTAIN ASH. Fell. T2 BEECH. Reduce to previous points by 1.5m. From 17m to 15.5m height and 6m to 4.5m spread. T18 MAPLE. Reduce back to previous pointsapprox 2m. from 10m to 8m height and 4m to 2m spread.
Refused Trees 8 docs -
4 - 6 Aldenham Grove Radlett Hertfordshire
87% historically approved · decision due ~7 Apr
Demolition of existing dwellings, boundary alterations and erection of two replacement dwellings (as amended by plans and documents received on 04.06.2026) (Outline application with all matters reserved)
Awaiting decision Outline Demolition 26 docs
Other householder applications
In Hertsmere
-
26/0157/HSE Decided
8 The Drive Radlett Hertfordshire WD7 7DA
Demolition of existing garage; construction of part single, part two storey side and rear extensions and front porch; alterations to levels and hard landscaping to front and rear; alterations to fenestration. (ADDITIONAL DOCUMENT RECEIVED: 18/08/2026 - Tree Report and Tree Protection Plan & secondary dropped kerb removed).
-
26/0653/HSE Decided
45 Highview Gardens Potters Bar Hertfordshire EN6 5PN
Construction of part single, part two storey side and rear extension with associated roof works.
-
26/0928/HSE Decided
5 Dellfield Close Radlett Hertfordshire WD7 8LS
Construction of two storey side and part single part two storey rear extension. Erection of detached double garage with ancillary utility space following the demolition of the existing garage. Conversion of loft to habitable room to include roof alterations and front, side and rear roof lights. Front porch extension.
-
26/0885/HSE Granted
89 Hatfield Road Potters Bar Hertfordshire EN6 1HZ
Demolition of existing detached garage and construction of part single, part two storey front, side and rear extension.
-
26/0985/HSE Decided
3 Bentley Place Bentley Heath Barnet Hertfordshire EN5 4BF
Part single, part two-storey rear extension, 2x new rear dormers, conversion of existing garage into habitable room, and alterations to fenestration.