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Planning application

145 Mutton Lane Potters Bar Hertfordshire EN6 2HD

Awaiting decision Hertsmere 26/1241/HSE Householder Application

Works: Extension Small domestic

Read from the description, not a valuation. How we read the register

Still open. Anyone can comment while the consultation period runs, and comments go to the council rather than to us.

Proposal

Single storey side and rear extension.

As published by the council, reference 26/1241/HSE

Application record

Reference
26/1241/HSE
Type
Householder Application
Status
Awaiting decision
Received
27 Aug 2026
Validated
2 Sep 2026
Ward
Potters Bar Parkfield
Parish
No Parish
Postcode
EN6 2HD

Timeline

Dates from the published record

  1. 27 Aug 2026

    Received by Hertsmere

  2. 2 Sep 2026

    Validated

    Checked as complete and ready for consideration.

  3. 4 Sep 2026

    Added to PlanIndex

  4. Decision

    Awaiting decision

    Decision expected by 28 October 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 57 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

JMB Design and build Ltd Agent, a design practice registered in Harrow

Active · incorporated 2015 · Harrow

8 applications on PlanIndex · across 2 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

9 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.

Watch members (£5 a month) open the document list from here.

Open the documents

What 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 65 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 0.3 miles

  • 143 Mutton Lane Potters Bar Hertfordshire EN6 2HD

    24/1050/CLP Submitted 13 Aug 2024 50 yards away

    Conversion of loft to habitable space to include raising of ridge height, insertion of 3x front rooflights, construction of rear dormer and removal of rear chimney stack. Certificate of Lawful Development (Proposed).

    Refused Lawful development Loft or dormer Roofing 6 docs

  • 147 Mutton Lane Potters Bar Hertfordshire EN6 2HD

    26/0600/HSE Submitted 4 May 2026 50 yards away

    Construction of single storey rear infill extension, and alterations to rear patio.

    Decided Householder Extension 14 docs
    Small domestic

  • 157 Mutton Lane Potters Bar Hertfordshire EN6 2HD

    24/1328/HSE Submitted 15 Oct 2024 50 yards away

    Demolition of existing detached garage followed by construction of part single, part two storey side, front and rear extension with pitched roof and insertion of 1x rear rooflight at loft level.

    Granted Householder Extension Loft or dormer +1 10 docs
    Domestic

  • 163 Mutton Lane Potters Bar Hertfordshire EN6 2HD

    21/1423/HSE Submitted 9 Jul 2021 100 yards away

    Single storey front and rear extension.

    Granted Householder Extension 8 docs
    Small domestic

  • Telecommunications Equipment On Land Adjacent To 163 Mutton Lane Potters Bar Hertfordshire

    21/1443/FUL Submitted 12 Jul 2021 100 yards away

    Replacement of existing 15m monopole with a new 20m high monopole accommodating new antennas with wrap-around cabinet at base, installation of 2 x additional cabinets and associated ancillary works.

    Granted Full applications Extension 13 docs

  • 59 Strafford Gate Potters Bar Hertfordshire EN6 1PW

    24/0941/PD42 Submitted 19 Jul 2024 150 yards away

    Single storey rear extension. Depth: 6.00m, Height: 3.15m, Eaves: 3.00m.

    Refused Prior approval Extension 5 docs
    Small domestic

In Hertsmere

  • 26/0805/HSE Granted

    Rydal Mount Lodge Baker Street Potters Bar Hertfordshire EN6 2BP

    Demolition of existing conservatory to facilitate construction of single storey rear extension and front porch extension.

    Received 10 Jun, published by the council 24 Jul 2026 Householder
  • 26/1218/HSE Refused

    22 The Grove Radlett Hertfordshire WD7 7NF

    Conversion of garage to habitable space with window to replace garage door and new pitched roof, construction of first floor side extension and part single, part two storey rear extension with insertion of 1x side rooflight, alterations to fenestration and front hard landscaping.

    Received 24 Aug, published by the council 1 Sep 2026 Householder
  • 26/1253/HSE Granted

    159 Arundel Drive Borehamwood Hertfordshire WD6 2LZ

    Construction of single storey rear extension with pitched roof and 3x rooflights, and alterations to fenestration.

    Received 28 Aug, published by the council 4 Sep 2026 Householder
  • 26/1250/HSE Granted

    3 The Walk Potters Bar Hertfordshire EN6 1QL

    Single storey side extension following demolition of existing detached garage and shed.

    Received 28 Aug, published by the council 4 Sep 2026 Householder
  • 26/1075/HSE Granted

    7 Belmor Elstree Borehamwood Hertfordshire WD6 3JX

    Proposed boundary treatments to the rear of the property including replacement fence.

    Received 31 Jul, published by the council 12 Aug 2026 Householder