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Planning application

40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

Decided Hertsmere 26/0735/HSE Householder

Works: Extension Loft or dormer Demolition 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 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).

As published by the council, reference 26/0735/HSE

Application record

Reference
26/0735/HSE
Category
Householder
Status
Decided
Received
28 May 2026
Validated
28 May 2026
Decided
6 Aug 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.

  • 26/0681/CLP Decided

    40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

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

    Decided 23 Jul 2026 Lawful development

Timeline

Dates from the published record

  1. 28 May 2026

    Received by Hertsmere

  2. 24 Jul 2026

    Added to PlanIndex

  3. 6 Aug 2026

    Decision issued

  4. 8 Aug 2026

    Status changed to Decided

    Previously Awaiting decision.

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

200 applications on PlanIndex · across 9 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

7 documents on file for this application

  • Delegated report Delegated Report · 07 Aug 2026
  • Decision Decision · 07 Aug 2026
  • Proposed floor plans and elevations Amended Plan · 05 Aug 2026
  • Existing floor plans, elevations and site plan Amended Plan · 05 Aug 2026
  • Applicationformredacted Application Form · 28 May 2026
  • Proposed plans and elevations Superseded plan · 28 May 2026
  • Existing plans and elevations Superseded plan · 28 May 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

  • 52 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    26/1315/CLP Submitted 10 Sep 2026 50 yards away

    Replacement rear dormer and alterations to front roof lights. Certificate of lawful development (Proposed).

    Granted Lawful development Loft or dormer 6 docs

  • 40 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    26/0681/CLP Submitted 19 May 2026 50 yards away

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

    Decided Lawful development Loft or dormer 3 docs

  • 52 Carrington Avenue Borehamwood Hertfordshire WD6 2HA

    21/1142/TPO Submitted 27 May 2021 50 yards away

    T1 OAK. Fell.

    Granted Trees 5 docs

  • 27 Lullington Garth Borehamwood Hertfordshire WD6 2HD

    21/0329/HSE Submitted 15 Feb 2021 50 yards 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 100 yards 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 100 yards away

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

    Granted Full applications Extension 4 docs

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
  • 26/1263/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
  • 26/1241/HSE Granted

    145 Mutton Lane Potters Bar Hertfordshire EN6 2HD

    Single storey side and rear extension, and front porch.

    Received 27 Aug, published by the council 4 Sep 2026 Householder