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Planning application

20 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw

Awaiting decision St Albans 5/2026/1375 Householder

Works: Extension Windows or glazing 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

Proposed first floor side extension with new solar panels, new front two-storey extension, part external cladding, replacement rear bay window, along with internal and external alterations and replacement windows

As published by the council, reference 5/2026/1375

Application record

Reference
5/2026/1375
Type
Householder
Status
Under Consultation
Received
17 Jul 2026
Validated
20 Jul 2026
Ward
Harpenden West
Parish
Harpenden Town
Postcode
AL5 2RW

Comment by 19 November 2026

The council is taking comments on this application until then. Comments go to St Albans through their own planning portal.

Timeline

Dates from the published record

  1. 17 Jul 2026

    Received by St Albans

  2. 20 Jul 2026

    Validated

    Checked as complete and ready for consideration.

  3. 2 Aug 2026

    Added to PlanIndex

  4. 23 Sep 2026

    Status changed to Under Consideration

    Previously Under Consultation.

  5. 11 Oct 2026

    Status changed to Under Consultation

    Previously Under Consideration.

  6. Decision

    Awaiting decision

    Decision expected by 14 September 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

    St Albans took a median of 76 days over the applications it decided in the last year.

Documents

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

14 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.

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

Open the documents

What happens while it is decided

This application is with St Albans for determination, against a statutory target of eight weeks. Over the last year St Albans decided householder applications in a median of 110 days. More in our guide to how long planning decisions take.

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

  • 13 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw

    5/2021/1614 Submitted 27 May 2021 50 yards away

    First floor front extension with rooflights, installation of solar panels on the rear roof slope, alterations to openings (resubmission following approval 5/2021/0522 dated 16/04/2021)

    Granted Householder Extension Loft or dormer 10 docs
    Domestic

  • 12 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw

    TP/2025/0558 Submitted 23 Oct 2025 50 yards away

    T14 Oak - Reduction by 3-4m approx (primary cuts) This tree has been previously been trimmed to prevent it out growing its location T15 Oak - Crown reduction by 2-3m approx. Same as above a control in tree spread is required.

    Granted Trees 4 docs

  • 12 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw

    5/2026/0433 Submitted 6 Mar 2026 50 yards away

    First floor front extension with roof lights and single storey side/rear extension with roof lights and internal alterations

    Granted Householder Extension Loft or dormer 11 docs
    Small domestic

  • 24 Hartwell Gardens Harpenden Al5 2Rw

    TP/2017/0455 Submitted 7 Sep 2017 50 yards away

    Reduce crown of Lime tree in rear garden back 2-3m below previous reduction points. Remove Diseased limb. Reduce Holly hedge by 1m. Reason - Lime has suffered limb failure. Holly hedge - To improve appearance - previously reduced. All in area A5.

    Granted Trees 5 docs

  • 12 Hartwell Gardens Harpenden Hertfordshire Al5 2Rw

    TP/2021/0147 Submitted 15 Mar 2021 50 yards away

    Oak (T4 TPO 1047) - lift crown by 5m to remove low lying branches crown thin 20% branches have broken off during high wind .

    Granted Trees 2 docs

  • 86 Townsend Lane Harpenden Hertfordshire Al5 2Rq

    5/2025/1061 Submitted 2 Jun 2025 150 yards away

    Demolition of existing 4 bedroom house and construction of replacement 5 bedroom dwelling with attic accommodation and landscaping works, including air source heat pump and air conditioning units and solar panels

    Granted Demolition 40 docs
    Domestic

In St Albans

  • 5/2026/0517 Granted

    28 White Hedge Drive St Albans Hertfordshire Al3 5Tt

    Proposed two-storey rear extension, loft conversion, and alterations to the existing front entrance porch

    Received 16 Mar, published by the council 31 Aug 2026 Householder
  • 5/2026/1055 Granted

    39 Oakwood Drive St Albans Hertfordshire Al4 0Ul

    Erection of a part single-storey, part two-storey wraparound extension, loft conversion including a rear dormer and rooflights, and construction of a front porch

    Received 1 Jun, published by the council 24 Jul 2026 Householder
  • 5/2026/1278 Granted

    39 Foxcroft St Albans Hertfordshire Al1 5Ss

    Proposed C3 residential extension including two storey front and single storey front and side with internal alterations

    Received 1 Jul, published by the council 24 Jul 2026 Householder
  • 5/2026/1170 Granted

    20 Nimrod Close St Albans Hertfordshire Al4 9Xy

    Extension of existing raised rear terrace with privacy screening and associated alterations to rear fenestration

    Received 17 Jun, published by the council 24 Jul 2026 Householder
  • 5/2026/1338 Granted

    16 Hunters Ride Bricket Wood Hertfordshire Al2 3Lx

    Proposed front porch

    Received 11 Jul, published by the council 9 Aug 2026 Householder