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Planning application

20 Mandeville Road Potters Bar Hertfordshire EN6 5LQ

Decided Hertsmere 26/0850/HSE Householder

Works: Extension Demolition Windows or glazing Small domestic

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

Decided. The decision notice on the council portal carries the outcome in full, including any conditions.

Proposal

Demolition of existing rear conservatory and detached garage, and construction of a single storey rear extension, and alterations to fenestration.

As published by the council, reference 26/0850/HSE

Application record

Reference
26/0850/HSE
Category
Householder
Status
Decided
Received
19 Jun 2026
Validated
19 Jun 2026
Decided
14 Aug 2026
Ward
Potters Bar Oakmere
Parish
No Parish
Postcode
EN6 5LQ

Timeline

Dates from the published record

  1. 19 Jun 2026

    Received by Hertsmere

  2. 24 Jul 2026

    Added to PlanIndex

  3. 14 Aug 2026

    Decision issued

  4. 30 Aug 2026

    Status changed to Decided

    Previously Awaiting decision.

Documents

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

3 documents on file for this application

  • Proposed block plan Drawing/Plans · 11 Aug 2026
  • Applicationformredacted Application Form · 19 Jun 2026
  • Existing and proposed drawings Drawing/Plans · 19 Jun 2026

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

Open the documents

After the decision

Hertsmere has decided this application; the outcome above is the register's own wording and the decision notice on the council portal carries the detail. More in our guide to what happens after a planning decision.

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

  • 61 Tempest Avenue Potters Bar Hertfordshire EN6 5LH

    21/1316/CLP Submitted 22 Jun 2021 100 yards away

    Conversion of loft to habitable room with rear dormer and 3no. rooflights. Certificate of lawfulness (Proposed).

    Granted Lawful development Loft or dormer 8 docs
  • 77 Tempest Avenue Potters Bar Hertfordshire EN6 5LD

    24/1401/PD42 Submitted 31 Oct 2024 150 yards away

    Single story rear extension. Depth: 6.0m, Height: 3.0m, Eaves: 3.0m.

    Granted Prior approval Extension 7 docs
  • 77 Tempest Avenue Potters Bar Hertfordshire EN6 5LD

    24/1212/PD42 Submitted 20 Sep 2024 150 yards away

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

    Refused Prior approval Extension 7 docs
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  • 18 The Grove Potters Bar Hertfordshire EN6 5LJ

    22/1964/FUL Submitted 24 Nov 2022 150 yards away

    Construction of a single storey rear extension and alterations to fenestration. Associated landscaping works to rear garden to include installation of new side access gate, paved steps to rear garden and removal of boundary wall and fence.

    Granted Full applications Extension Windows or glazing 8 docs
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  • 70 Highview Gardens Potters Bar Hertfordshire EN6 5PJ

    14/1387/DOC Submitted 4 Sep 2014 150 yards away

    Application for approval of details reserved by conditions 2, 3, 4, 5, 6, and 9 of planning permission reference 14/0169/FUL

    Granted Conditions 2 docs
  • 45 Tempest Avenue Potters Bar Hertfordshire EN6 5JY

    21/1279/HSE Submitted 16 Jun 2021 200 yards away

    Construction of first floor rear extension. (amended plans received 13/08/2021.)

    Granted Householder Extension 10 docs
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In Hertsmere

  • 26/1319/HSE Granted

    54 The Shrublands Potters Bar Hertfordshire EN6 2BW

    Single storey side extension and front porch.

    Received 10 Sep, published by the council 23 Sep 2026 Householder
  • 26/1324/HSE Granted

    12 Nightingale Close Radlett Hertfordshire WD7 8NT

    Partial conversion of garage to habitable space, construction of single storey rear extension and front porch extension, alterations to fenestration.

    Received 11 Sep, published by the council 21 Sep 2026 Householder
  • 26/1263/HSE Granted

    11 Juniper Gardens Shenley Radlett Hertfordshire WD7 9LA

    Single storey rear extension.

    Received 1 Sep, published by the council 23 Sep 2026 Householder
  • 26/1303/HSE Granted

    14 Hartfield Avenue Elstree Borehamwood Hertfordshire WD6 3JE

    Alterations to fenestration to include replacement of garage door with window and side elevation window changes.

    Received 8 Sep, published by the council 15 Sep 2026 Householder
  • 26/1248/HSE Granted

    24 Farm Way Bushey Hertfordshire WD23 3SS

    Single storey rear extension; single storey front extension to include porch, conversion of garage to habitable space and replacement of garage door with window; first floor side extension.

    Received 28 Aug, published by the council 4 Sep 2026 Householder