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Planning application

23 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

Granted Three Rivers 21/2860/RSP Retrospective application

Works: Extension Loft or dormer Windows or glazing

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Part-retrospective: Ground and lower ground floor side and rear extension, loft conversion including insertion of rear dormer window, front rooflights, alterations to fenestration, rendering of property and extensions to softcast render, alterations to existing rear terrace, new external rear stairs to garden level and new raised planters

As published by the council, reference 21/2860/RSP

Application record

Reference
21/2860/RSP
Type
Retrospective application
Status
Decided
Decision
approved
Received
16 Dec 2021
Validated
4 Jan 2022
Decided
28 Mar 2022
Ward
Dickinsons
Parish
Croxley Green Parish Council
Decision by
Committee Decision
Postcode
WD3 4AB

Timeline

Dates from the published record

  1. 16 Dec 2021

    Received by Three Rivers

  2. 4 Jan 2022

    Validated

    Checked as complete and ready for consideration.

  3. 28 Mar 2022

    Decision issued: approved

  4. 19 Aug 2026

    Added to PlanIndex

Documents

Plans, drawings, consultee responses and the officer's report

20 documents on file for this application

A planning file usually holds the application form, drawings and site plans, consultee responses, the officer's report and the decision notice.

Trade members open them from here.

Open the documents

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

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.

More on amendments applications in our guide

Nearby applications

Within 500 metres

  • 23 Copthorne Road Croxley Green WD3 4AB

    20/1896/FUL Submitted 14 Sep 2020 10m away

    Ground and lower ground floor side and rear extension, loft conversion including insertion of rear dormer window, alterations to fenestration and alterations to existing rear terrace.

    Granted Full applications Extension Loft or dormer +1 17 docs
  • 13 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

    26/0763/FUL Submitted 12 May 2026 31m away

    90% historically approved · decision due ~16 Jul

    Construction of outbuilding with veranda to rear garden.

    Decided Full applications
  • 43 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

    26/1243/FUL Submitted 3 Aug 2026 31m away

    90% historically approved · decision due ~30 Sep

    Demolition of existing dwelling; construction of two storey detached dwelling with accommodation in the roof space served by front and rear dormer windows; solar panels, alterations to the driveway and creation of new vehicular access with dropped kerb; alterations to front boundary including construction of brick wall with piers, metal railings and gates; associated landscaping including creation of a swimming pool and ancillary works

    Awaiting decision Full applications New dwelling Loft or dormer +2
    Small domestic
  • 27 Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AB

    24/0007/TPO Submitted 3 Jan 2024 32m away

    Cypress (T90). This tree has grown to such an extent that it poses a risk to the property Flat 27a. In the recent high winds the tree has continually hit Flat 27a and this has dislodged the haunching of the concrete tiled roof. The tree is of such a height and spread that it could cause further significant damage should it deflect sufficiently or part of it fall. Proposed work: Whole crown reduction to 13m above ground level, to provide sufficient clearance to property.

    Granted Trees 4 docs
  • Chellow Dene Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AE

    25/1845/TPO Submitted 24 Oct 2025 36m away

    T1 - Reduce Beech in front garden by approx 2-3m all over to create a smaller, balanced crown.

    Refused Trees 6 docs
  • Highwood Copthorne Road Croxley Green Rickmansworth Hertfordshire WD3 4AE

    25/1844/TPO Submitted 24 Oct 2025 36m away

    T1: Reduce Beech on R/h of front garden by approx 1-2m all over to create a smaller, balanced crown. T2: Removal to approx 10cm from ground level of 1x diseased Beech in front garden. Access to neighbouring garden will be required to complete these works.

    Refused Trees 7 docs

In Three Rivers

  • 26/1353/NMA Awaiting decision

    Langleybury House And Film Center Langleybury Lane Langleybury Hertfordshire WD4 8RW

    Non Material Amendment to planning permission 22/1945/FUL to vary the wording of Condition 69 (Phasing)

    21 Aug 2026 Amendments
  • 26/0704/RSP Granted

    48 Oakleigh Drive Croxley Green Rickmansworth Hertfordshire WD3 3EF

    Part Retrospective: Erection of rear dormer window and raised patio including privacy screen

    29 Apr 2026 Amendments
  • 26/1230/NMA Awaiting decision

    Beaufort Court Egg Farm Lane Kings Langley Hertfordshire WD4 8LR

    Non Material Amendments to planning permission 24/1751/RSP to allow separate work on the coach house and crop store (Condition 4)

    31 Jul 2026 Amendments
  • 25/0488/RSP Granted

    Scotsbridge House Scots Hill Croxley Green Rickmansworth Hertfordshire WD3 3BB

    Part Retrospective: Demolition of offices and erection of new development of 59 flats with associated parking and external landscaping

    19 Mar 2025 Amendments
  • 25/1831/RSP Refused

    Little Lily Toms Lane Kings Langley Hertfordshire WD4 8NJ

    Part Retrospective: Change of use of land for the stationing of caravans for residential purposes for 5 no. gypsy pitches (10 statics) including formation of hardstanding and landscaping

    22 Oct 2025 Amendments