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54 Coldharbour Lane Bushey Hertfordshire WD23 4NY

26/0323/CLPCertificate Proposed Lawful Use/DevApproved
Outline / PiP

Approved on 1 May 2026

Council decision: Grant Lawful Certificate (Proposed Dev)

Approximate site (title boundary)
Boundary © HM Land Registry, © Ordnance Survey · details

This information is subject to Crown copyright and database rights 2026 and is reproduced with the permission of HM Land Registry. The polygons (including the associated geometry, namely x, y co-ordinates) are subject to Crown copyright and database rights 2026 Ordnance Survey AC0000851063. Conditions of use.

Proposal

Conversion of loft to habitable space including hip to gable roof alterations with rear dormer and 2x front roof lights. Certificate of Lawful development (Proposed).

Received
10 March 2026
Ward
Bushey St James
Agent
Studio RHL
  1. Received10 Mar
  2. Validated10 Mar
  3. Consult.
  4. Target5 May
  5. Decided1 May

Decided in 52 days (council typically 56)

About this application

This is an outline application for a dormer extension at 54 Coldharbour Lane Bushey Hertfordshire WD23 4NY. Hertsmere has handled 952 applications of this type. This one was decided in 52 days, 4 days quicker than Hertsmere's typical decision time. There are no previous applications recorded at this address. In the past year there have been 76 applications across Bushey St James. We hold 1,928 applications in total for the WD23 postcode area.

81% of outline applications at Hertsmere Borough Council were approved. Across all application types, the council typically decides in about 8 weeks (median).

Based on decided applications received in the last 3 years.See what's approved near your address

Application details

Postcode
WD23 4NY
Application type
Certificate Proposed Lawful Use/Dev
Scale / size
Small
Parish
No Parish

Planning application dates

Date validated
10 March 2026
Target decision date
5 May 2026

Applicant and agent

Applicant
Private applicant
Agent
Studio RHL
Architect profile
STUDIO RHL LTD
Agent address
Suite 130 186 St Albans Road Watford WD24 4AS

Planning decision

Case officer
Brian Kam
Statutory period
56 days

Additional information

Planning Portal ID
PP-14767365
Comments
0
Documents
15
Constraints
9

Site constraints

Checking the site
2/3
Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

  • Flood zone 1: Low probability (rivers and sea)

Not published by this council, so not checked: Article 4 directions. Ask the council if these matter.

Possibly incomplete for this council: tree preservation orders.

Also checked, none recorded (22)

flood storage areas, conservation areas, listed buildings, green belt, scheduled monuments, World Heritage Sites, World Heritage Site buffer zones, registered parks and gardens, registered battlefields, Heritage at Risk entries, nutrient neutrality catchments, national parks, National Landscapes, SSSIs, Special Areas of Conservation, Special Protection Areas, Ramsar sites, ancient woodland, national nature reserves, local nature reserves, heritage coasts and brownfield registers.

A guide only, from official open data; it is not a planning search. Flood zones cover rivers and sea, not surface water.

Data © Crown copyright and others · sources and licences

Contains public sector information from planning.data.gov.uk (MHCLG and local planning authorities), licensed under the Open Government Licence v3.0. © Crown copyright and database right 2026.

© Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. The Historic England GIS Data contained in this material was obtained on 2026-11-03. The most publicly available up to date Historic England GIS Data can be obtained from HistoricEngland.org.uk.

© Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right 2026.

© Environment Agency copyright and/or database right 2026. All rights reserved. Flood Map for Planning, Open Government Licence v3.0.

Contains Ordnance Survey data © Crown copyright and database right 2026.

Source: Office for National Statistics licensed under the Open Government Licence v.3.0. Contains OS data © Crown copyright and database right 2026.

Source: Hertsmere

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