Skip to content
PlanIndex Get alerts
Menu

Planning application

40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

Decided Hertsmere 26/0681/CLP Lawful development

Works: Loft or dormer

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

Proposal

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

As published by the council, reference 26/0681/CLP

Application record

Reference
26/0681/CLP
Category
Lawful development
Status
Decided
Received
19 May 2026
Validated
19 May 2026
Decided
23 Jul 2026
Ward
Borehamwood Hillside
Parish
Elstree & Borehamwood Town Council
Postcode
WD6 2HA

Site history

Applications at this address on the Hertsmere register

This site has had 2 applications since 2026.

  • 26/0735/HSE Decided

    40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    Demolition of garage to form single storey side and part single part two storey rear extensions, erection of porch and internal alterations. Conversion of loft to habitable space to include rear dormer, 3x front rooflights and removal of chimney stack (amended description).

    Decided 6 Aug 2026 Householder

Timeline

Dates from the published record

  1. 19 May 2026

    Received by Hertsmere

  2. 23 Jul 2026

    Decision issued

  3. 24 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

KDB Building Designs Ltd Agent, a design practice registered in Greenford

Active · incorporated 2002 · Greenford

183 applications on PlanIndex · across 8 councils · 85% granted

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

3 documents on file for this application

  • Decision notice Decision · 24 Jul 2026
  • Applicationformredacted Application Form · 19 May 2026
  • Location / site plan, existing & proposed plans, elevations Drawing/Plans · 19 May 2026

Trade members open them 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 lawful development applications

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    26/0735/HSE Submitted 28 May 2026 0m away

    Demolition of garage to form single storey side and part single part two storey rear extensions, erection of porch and internal alterations. Conversion of loft to habitable space to include rear dormer, 3x front rooflights and removal of chimney stack (amended description).

    Decided Householder Extension Loft or dormer +1 7 docs
    Small domestic

  • 52 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    21/1142/TPO Submitted 27 May 2021 2m away

    T1 OAK. Fell.

    Granted Trees 8 docs

  • 27 Lullington Garth Borehamwood Hertfordshire WD6 2HD

    21/0329/HSE Submitted 15 Feb 2021 55m away

    Conversion of loft to habitable room with rear dormer and insertion of roof light to side elevation. Demolition of existing garage, erection of part single part two storey side and rear extension, new front porch and alterations to fenestration (revised application). (amended plans received 02/06/2021 - amendments to neighbouring property location and reduced dormer and ground floor rear extension size)

    Granted Householder Extension Loft or dormer +2 7 docs
    Small domestic

  • 23 Lullington Garth Borehamwood Hertfordshire WD6 2HD

    21/0712/HSE Submitted 31 Mar 2021 70m away

    Conversion of garage to habitable room, construction of single storey front extension, single storey rear infill extension and alterations to fenestration.

    Granted Householder Extension Windows or glazing 6 docs
    Small domestic

  • 30 Lullington Garth Borehamwood WD6 2HE

    TP/08/0205 Submitted 11 Feb 2008 100m away

    *Electronic documents only, no paper fileErection of two storey side extension and first floor rear extension.

    Granted Full applications Extension 4 docs

  • 46 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    21/1070/HSE Submitted 18 May 2021 105m away

    Two storey side extension.

    Withdrawn Householder Extension 10 docs
    Domestic

In Hertsmere

  • 26/0997/CLE Decided

    44 Kimptons Mead Potters Bar Hertfordshire EN6 3JA

    Existing use as a HMO (Class C4) Certificate of Lawful Development (Existing).

    20 Jul 2026 Lawful development
  • 26/1000/CLE Granted

    81 Sunnybank Road Potters Bar Hertfordshire EN6 2NL

    Conversion of house to 6x bed HMO (Class C4). Certificate of lawful development (Existing).

    20 Jul 2026 Lawful development
  • 26/1011/CLE Decided

    6 Brickfield Cottages Theobald Street Borehamwood Hertfordshire WD6 4SD

    Construction of a single-storey detached outbuilding within the rear garden of the existing dwellinghouse for use as a private gym incidental to the enjoyment of the main dwelling (Use Class C3). Certificate of Lawful Development (Existing).

    21 Jul 2026 Lawful development
  • 26/1007/CLP Decided

    15 Radlett Park Road Radlett Hertfordshire WD7 7BG

    Erection of single storey outbuilding to rear garden. Certificate of Lawful Development (Proposed).

    21 Jul 2026 Lawful development
  • 26/0999/CLE Decided

    87 Southgate Road Potters Bar Hertfordshire EN6 5EB

    Conversion of house to 5x bed HMO (Class C4). Certificate of lawful development (Existing).

    20 Jul 2026 Lawful development