Cedar House 73 Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PA

23/0921/LBCListed Building ConsentApproved

Approved on 20 September 2023

Council decision: Grants ConsentDelegated (officer decision)

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

Amendments to approved side extension (under application reference 22/1631/LBC). Minor internal alterations to openings and minor external alterations to paved areas. (Application for Listed Building Consent. Accompanying householder application under reference 23/0920/HSE.)

Received: 27 June 2023
Decision level: Delegated (officer decision)
Council: Hertsmere Borough Council
Ward: Shenley
Agent: PBARC LTD

ReceivedReceived27 Jun
ValidatedValidated29 Jun
Consult.Consultation25 Jul
TargetTarget Date20 Sep
DecidedDecided20 Sep

Decided in 83 days (council typically 56)

About this application

This is a heritage application for a side extension at Cedar House 73 Blanche Lane South Mimms Potters Bar Hertfordshire EN6 3PA. Hertsmere has handled 105 applications of this type. This one was decided in 85 days, 4 weeks longer than Hertsmere's typical decision time. The site is in the South Mimms conservation area, with 1 listed building nearby. There have been 11 other applications at this address. In the past year there have been 124 applications across Shenley. We hold 3,350 applications in total for the EN6 postcode area.

86% of heritage 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: EN6 3PA
Application type: Listed Building Consent
Scale / size: Medium
Parish: The Parish Council South Mimms And Ridge

Planning application dates

Date validated: 29 June 2023
Consultation expiry: 9 August 2023
Consultation start: 20 September 2023
Consultation end: 25 July 2023
Neighbour consultation start: 6 July 2023
Neighbour consultation end: 27 July 2023
Last date for comments: 9 August 2023
Target decision date: 20 September 2023
Permission expires: 20 September 2026

Applicant and agent

Agent: PBARC LTD
Architect profile: PBARC LTD
Agent address: 25 Albany Gate Potters Bar Potters Bar EN6 1DN

Planning decision

Statutory period: 83 days

Publicity

Last advertised: 19 July 2023
Advertisement expiry: 9 August 2023

Additional information

Planning Portal ID: PP-12266210
Comments: 0
Documents: 27
Constraints: 11

Site constraints

Checking the site

2/3

Council recordsAppealsFlood risk

Designations that overlap or adjoin the site outline.

Conservation area: South Mimms
Listed building: Grade II: Cedar HouseOn this site
Green belt: Hertsmere
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 (19)

flood storage areas, 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.

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.

Associated applications

2023
27 Jun
Amendments to approved side extension (under application reference 22/1631/LBC
This applicationApprovedListed building consent23/0921/LBC
2023
26 Jun
Amendments to approved side extension (under application reference 22/1630/HSE
ApprovedListed building consentPart of23/0920/HSE
2022
22 Sep
Single storey side extension with green roof, alterations to fenestration at all elevations. Installation of…
ApprovedHouseholderFiled alongside22/1630/HSE
2022
22 Sep
Single storey side extension with green roof, alterations to fenestration at all elevations. Installation of…
ApprovedListed building consentPart of22/1631/LBC

Planning history at this site

10 other applications at this property, newest first.

Source: Hertsmere

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