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Planning application

20 West Common Grove Harpenden Hertfordshire Al5 2At

Decided St Albans 5/2026/0211 Householder

Works: Extension 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

Proposed single storey side/front extension along with internal modifications

As published by the council, reference 5/2026/0211

Application record

Reference
5/2026/0211
Type
Householder
Status
Approved
Decision
DC3 Conditional Permission
Received
5 Feb 2026
Validated
6 Feb 2026
Decided
6 Aug 2026
Ward
Harpenden South
Parish
Harpenden Town
Decision by
Delegated
Postcode
AL5 2AT

Timeline

Dates from the published record

  1. 5 Feb 2026

    Received by St Albans

  2. 6 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 6 Aug 2026

    Decision issued: DC3 Conditional Permission

  4. 7 Sep 2026

    Added to PlanIndex

Documents

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

23 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

After the decision

The process from here

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

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

  • 19 West Common Grove Harpenden Hertfordshire Al5 2At

    TP/2026/0376 Submitted 31 Jul 2026 0m away

    A large maple tree requires a reduction of c 30%

    Decided Trees 3 docs

  • 45 Barlings Road Harpenden Hertfordshire Al5 2Bj

    5/2016/1906 Submitted 19 Jun 2016 63m away

    One, five bedroom detached dwelling with basement and detached garage, associated landscaping and parking following demolition of existing dwelling

    Decided New dwelling Demolition 14 docs
    Domestic

  • 43 Barlings Road Harpenden Hertfordshire Al5 2Bj

    5/2021/1486 Submitted 18 May 2021 63m away

    Non Material Amendment - Infill ground floor bathroom window, Additional rooflight to front, Small shift to 2 no. rooflights, Amend cladding to the dormers, Amend rainwater goods, Extension of the bi-fold opening, Reconfiguration of ground floor flank doo

    Refused Amendments Extension Loft or dormer +1 14 docs

  • 12 Barlings Road Harpenden Hertfordshire Al5 2An

    5/2026/0823 Submitted 27 Apr 2026 116m away

    Certificate of Lawfulness (proposed) - The proposed alterations to the dwellinghouse, together with the single storey open fronted pergola to the rear with a maximum height of 3 metres, comply with the provisions of Class A, Part 1, Schedule 2 of the Town

    At appeal Lawful development 3 docs
    Small domestic

  • 12 West Common Grove Harpenden Hertfordshire Al5 2Ll

    5/2026/1176 Submitted 18 Jun 2026 119m away

    Single storey side extension including new garage following demolition of existing garage Alterations to front elevation of main house comprising the removal of the existing feature timbers and rendered panels and replacement with brick slips to ground fl

    Decided Householder Extension Demolition 8 docs
    Small domestic

  • 6 Maple Cottages West Common Harpenden Al5 2As

    TP/2026/0416 Submitted 26 Aug 2026 186m away

    Cherry Tree reduce back laterals by 1.5 meter approx over hanging neighbours garden number 5. All work carried out to BS3998:2010

    Decided Trees

In St Albans

  • 5/2026/1173 Decided

    6 Longacres St Albans Hertfordshire Al4 0Dr

    Demolition of existing outbuilding and construction of single storey rear extension

    18 Jun 2026 Householder
  • 5/2026/0299 Decided

    12 Rowlatt Drive St Albans Hertfordshire Al3 4Nb

    Demolition of existing side and rear extension and construction of a canopy porch, part single, part two storey front, two storey side and single storey rear extension

    17 Feb 2026 Householder
  • 5/2026/0318 Refused

    7 Ardens Way St Albans Hertfordshire Al4 9Uw

    Demolition of existing side canopy, detached garage, rear patio and garden shed and the construction of two storey front, side and rear extensions, together with part single storey rear extension and a front porch canopy and extension to driveway

    19 Feb 2026 Householder
  • 5/2026/1139 Decided

    50 Fontmell Close St Albans Hertfordshire Al3 5Hu

    Single storey rear extension and side windows with top openers over 1.7m high

    10 Jun 2026 Householder
  • 5/2026/0525 Decided

    11 Hillside Road Harpenden Hertfordshire Al5 4Bs

    Garage conversion, with part roof extension and new front porch extension

    17 Mar 2026 Householder