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Planning application

23/1991/RSP

59 Chestnut Avenue Rickmansworth Hertfordshire WD3 4HA

Granted Three Rivers Retrospective application

Proposal

Retrospective: Demolition of front porch and construction of part single, part two storey rear extension including raised rear patio; garage conversion and loft conversion including increase in ridge height with front, side and rear rooflights, new entrance door; alterations to external materials including render and cladding; internal alterations and alterations to fenestration.

As published by the council, reference 23/1991/RSP

Timeline

Dates from the published record

  1. 23 Nov 2023

    Received by Three Rivers

  2. 1 Dec 2023

    Validated

    Checked as complete and ready for consideration.

  3. 18 Jan 2024

    Decision issued: approved

  4. 24 Jul 2026

    Added to PlanIndex

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

  • 22/0199/FUL Refused

    59 Chestnut Avenue Rickmansworth Hertfordshire WD3 4HA

    Two-storey side and rear extension and loft conversion including insertion of rooflights and alterations to external materials

    9 Feb 2022 2m away Full applications
  • 26/0283/RSP Granted

    37 Chestnut Avenue Rickmansworth Hertfordshire WD3 4HA

    Retrospective: Installation of entrance gates and brick pillars

    20 Feb 2026 197m away Amendments
  • 24/0057/TPO Refused

    Merrilee Park Avenue Chorleywood Rickmansworth Hertfordshire WD3 5DU

    T116 and T117 are extremely tall and need to be reduced in height to prevent them from falling down in a storm. In fact last May on a calm day whilst I was cutting the grass a large tree in the group at G28 at the bottom of the garden suddenly snapped and came crashing down almost hitting me and could have seriously injured me or even killed me. T118 is standing above and close to the house next door (Red Court) and if it falls in a storm will do serious damage to the house - it needs to be reduced in height and made safe.

    16 Jan 2024 200m away Trees
  • 26/0783/FUL Granted

    12 Parkfield Chorleywood Rickmansworth Hertfordshire WD3 5AY

    Demolition of existing conservatory and partial conversion of existing garage to habitable accommodation, construction of single storey rear extension, alterations to fenestration including relocation of front door

    14 May 2026 211m away Full applications
  • 20/2076/TPO Granted

    Land Opposite 10 Haywood Park Chorleywood Rickmansworth Hertfordshire WD3 5DR

    Beech x 10 Reduce all over back to previous - 2.5 metres from height 1.5 from side to allow more light in Silver Birch x 5 - to reduce height by 1.2 metres and 0.5 metres from side Beech x 1 - cut back to previous 1.5 metres Oak x 3 - cut back to previous 1.5 metres Cherry - To reduce all over back to previous 1.5 metres Sycamore - To reduce height by 2 metres and sides by 1.5 metres

    1 Oct 2020 216m away Trees
  • 21/2393/TPO Granted

    Pentlands 55 Chestnut Avenue Rickmansworth WD3 4HA

    T1 T2 T3 & T4 - Beech reduce by 3.5m crown clean by 20% Client is worried about the tree in striking distance of the house in high winds etc. light into garden is an issue too.

    13 Oct 2021 217m away Trees

In Three Rivers

  • 26/1089/NMA Granted

    Warner Bros. Studios Leavesden Warner Drive Watford Hertfordshire WD25 7LP

    Non-material amendment pursuant to planning permission 25/1308/FUL to allow alterations to Building 18 including alterations to fenestration detail, new canopy element and provision of a mezzanine level.

    7 Jul 2026 Amendments
  • 26/1062/NMA Granted

    24 Lynwood Heights Rickmansworth Hertfordshire WD3 4ED

    Non Material Amendments to planning permission 24/1799/RSP to allow alterations to the fenestration and render including change in exterior colour.

    1 Jul 2026 Amendments
  • 26/0845/RSP Granted

    Keepers Cottage Solesbridge Lane Chorleywood Rickmansworth Hertfordshire WD3 5SU

    Part-Retrospective: Change of use of land for the stationing of caravans for residential purposes.

    26 May 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
  • 26/1189/RSP Awaiting decision

    30 Hillcroft Crescent Oxhey Hall Watford Hertfordshire WD19 4NY

    Retrospective Application: single storey rear extension

    23 Jul 2026 Amendments