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Planning application

1 Avenue St Nicholas Harpenden Hertfordshire Al5 2De

Decided St Albans 5/2025/2330 Householder

Works: Extension Loft or dormer 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

Construction of part single, part two storey rear extension, new end of garden outbuilding, new external hard landscaping and associated alterations to the existing house. First floor side elevation openings. Enlargement to rear dormer. Materials changes.

As published by the council, reference 5/2025/2330

Application record

Reference
5/2025/2330
Type
Householder
Status
Under Consideration
Decision
PENDING
Received
22 Dec 2025
Validated
23 Dec 2025
Ward
Harpenden West
Parish
Harpenden Town
Postcode
AL5 2DE

Site history

Applications at this address on the St Albans register

This site has had 2 applications since 2017: 1 approved, 0 refused.

  • 5/2017/2729 Granted

    1 Avenue St Nicholas Harpenden Hertfordshire Al5 2De

    Discharge of Condition 7 (protection of trees) to planning permission 5/2017/0570 dated 27/04/2017 for Single storey side extension , part single part two storey rear extension with rooflights, rooflights to the loft and alterations to openings following

    Decided 23 Nov 2017 Conditions

Timeline

Dates from the published record

  1. 22 Dec 2025

    Received by St Albans

  2. 23 Dec 2025

    Validated

    Checked as complete and ready for consideration.

  3. 24 Jul 2026

    Added to PlanIndex

Documents

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

30 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

St Albans 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 500 metres

  • 1 Avenue St Nicholas Harpenden Hertfordshire Al5 2De

    5/2017/2729 Submitted 27 Sep 2017 0m away

    Discharge of Condition 7 (protection of trees) to planning permission 5/2017/0570 dated 27/04/2017 for Single storey side extension , part single part two storey rear extension with rooflights, rooflights to the loft and alterations to openings following

    Granted Conditions Extension Loft or dormer +1 4 docs
    Small domestic

  • 4 The Drive Harpenden Hertfordshire Al5 2El

    TP/2026/0308 Submitted 23 Jun 2026 74m away

    T3 Cherry - Fell G2 Sycamore & Ash - Crown reduction by 3-4m approx Lawson Cypress Group - Reduction in height by 3-4m approx T1 Lawson Cypress (suffering)

    Granted Trees 5 docs

  • 11 Rothamsted Avenue Harpenden Hertfordshire Al5 2Dd

    TP/2025/0614 Submitted 23 Nov 2025 78m away

    T2 Sycamore - Crown reduction by. 3-4m approx (primary cuts) and crown clean T1 Oak - Crown reduction by 3-4m approx (primary cuts) & crown clean. Removal of basil growth and crown lift south side to balance.

    Decided Trees 4 docs

  • 15A Rothamsted Avenue Harpenden Al5 2Dd

    TP/2017/0539 Submitted 18 Oct 2017 78m away

    Reduce Laurel hedge to 4m height. Fell dead Hawthorn (exempt work for latter tree).

    Granted Trees 3 docs

  • 11 Rothamsted Avenue Harpenden Hertfordshire Al5 2Dd

    TP/2021/0098 Submitted 1 Mar 2021 78m away

    Rear garden trees. T1 Sycamore - Crown reduction by 4-6m approx. T2 Oak - Crown reduction by 3-4m approx.

    Granted Trees 2 docs

  • 4 Rothamsted Avenue Harpenden Hertfordshire Al5 2Db

    5/2026/0519 Submitted 16 Mar 2026 119m away

    Lantern rooflight over existing flat roof, insertion of rooflights into existing pitched roof slope, conversion of attached external storage outbuilding to habitable accommodation, minor alterations to windows and doors to suit internal reconfiguration

    Granted Householder Loft or dormer Windows or glazing 10 docs
    Small domestic

In St Albans

  • 5/2026/1089 Granted

    25 High Firs Crescent Harpenden Hertfordshire Al5 1Nb

    Removal of the existing flat roof and construction of a pitched roof to the front elevation

    5 Jun 2026 Householder
  • 5/2026/0989 Granted

    Mabel 30 Faircross Way St Albans Hertfordshire Al1 4Sd

    Construction of single storey garden golf studio

    18 May 2026 Householder
  • 5/2026/0631 Granted

    28 Wroxham Way Harpenden Hertfordshire Al5 4Pp

    Proposed two storey side and rear extension and single storey rear extension, alterations to patio, boundary treatments and landscaping.

    27 Mar 2026 Householder
  • 5/2026/1265 Granted

    43 Granby Avenue Harpenden Hertfordshire Al5 5Qp

    Following demolition of store rooms etc, proposed two-storey side and rear extensions, single-storey side and rear extensions along with internal and external alterations, new openings and chimney removal

    30 Jun 2026 Householder
  • 5/2026/1152 Granted

    43A Moreton End Lane Harpenden Hertfordshire Al5 2Ha

    Addition of flat roof dormers to the first-floor ensuite bathroom on both the front and rear elevations. New utility room added to the rear of the garage space.

    15 Jun 2026 Householder