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Planning application

18 Kemprow Aldenham Watford Hertfordshire WD25 8BP

Awaiting decision Hertsmere 26/1077/HSE Householder

Works: Extension Loft or dormer 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 story rear extension, erection of a new porch, new raised roof incorporating conversion of loft to habitable space with front dormer and 5x roof lights,and associated external works.

As published by the council, reference 26/1077/HSE

Application record

Reference
26/1077/HSE
Category
Householder
Status
Awaiting decision
Received
31 Jul 2026
Validated
31 Jul 2026
Ward
Aldenham West
Parish
Aldenham Parish
Postcode
WD25 8BP

Timeline

Dates from the published record

  1. 31 Jul 2026

    Received by Hertsmere

  2. 12 Aug 2026

    Added to PlanIndex

  3. Decision

    Awaiting decision

    Decision expected by 25 September 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 65 days over the applications it decided in the last year.

Who's behind it

Company information only, from the register and Companies House

Agent on file, a design practice registered in Harrow

59 applications on PlanIndex · across 12 councils · 78% granted

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

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

13 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.

Trade members open them from here.

Open the documents

What happens while it is decided

The process from here

This application is with Hertsmere for determination. The council publicises it, consults neighbours and technical bodies where required, and weighs the responses against local and national planning policy.

The statutory target is eight weeks for most applications and thirteen for major development, though extensions of time are common. Comments carry most weight while the case is undecided, so check the council portal for the deadline if you want to respond.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 18 Kemprow Aldenham Watford Hertfordshire WD25 8BP

    26/0861/CLP Submitted 22 Jun 2026 0m away

    78% historically approved · decision due ~17 Aug

    Construction of single storey outbuilding. Certificate of Lawful Development (Proposed).

    Awaiting decision Lawful development 4 docs
    Small domestic

  • High Point Kemprow Aldenham Watford WD25 8BP

    TP/11/1624 Submitted 23 Aug 2011 93m away

    Erection of single storey kitchen extension; Single storey extension to sitting room with external terrace; New doors, new and replacement windows and construction of Juliet balustrade; Loft conversion and extensions to include insertion of a rooflight to principal elevation; Installation of a swimming pool with bridge over; Single storey arbor enclosure; New South elevation chimney; Demolition of existing flue in brick chimney; Extension of existing soil vent pipe; Ground source heat pump boreholes and insertion of 8 no. solar panels on South West roof of existing garage (Certificate of Lawful Development - Proposed).

    Refused Lawful development Extension Loft or dormer +2 20 docs
    Small domestic

In Hertsmere

  • 26/1262/HSE Awaiting decision

    Roundbush House Round Bush Lane Aldenham Watford Hertfordshire WD25 8BG

    Construction of attached double garage with pitched roof.

    1 Sep 2026 Householder
  • 26/1260/HSE Awaiting decision

    26 Caishowe Road Borehamwood Hertfordshire WD6 5JA

    Demolition of existing outbuilding to facilitate construction of single storey side and rear extension.

    1 Sep 2026 Householder
  • 26/1255/HSE Awaiting decision

    33 Coldharbour Lane Bushey Hertfordshire WD23 4NU

    Demolition of rear conservatory and existing two storey side extension; construction of part single, part two storey side and rear extension and two storey front extension with relocation of front entrance; conversion of loft to habitable space with associated hip to gable roof extensions, rear dormer with 2x Juliette balconies and insertion of 2x front and 4x side rooflights; 3x rear Juliette balconies at first floor level, alterations to side bay extension, alterations to fenestration and removal of 2x chimney stacks.

    28 Aug 2026 Householder
  • 26/1253/HSE Awaiting decision

    159 Arundel Drive Borehamwood Hertfordshire WD6 2LZ

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

    28 Aug 2026 Householder
  • 26/1250/HSE Awaiting decision

    3 The Walk Potters Bar Hertfordshire EN6 1QL

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

    28 Aug 2026 Householder