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Planning application

57 Leycroft Way Harpenden Hertfordshire Al5 1Jp

Granted St Albans 5/2026/0192 Certificate of Lawfulness (existing)

Works: Windows or glazing Domestic

Read from the description, not a valuation. How we read the register

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of Lawfulness (existing) - The existing garage has been converted into a habitable room and the owners of the dwelling would like to obtain consent to replace the garage door with a window. As far as we are aware, Permitted Development is stil

As published by the council, reference 5/2026/0192

Application record

Reference
5/2026/0192
Type
Certificate of Lawfulness (existing)
Status
Approved
Decision
Certificate of Lawfulness Approved
Received
3 Feb 2026
Validated
4 Feb 2026
Decided
22 Apr 2026
Ward
Harpenden South
Parish
Harpenden Town
Decision by
Delegated
Postcode
AL5 1JP

Timeline

Dates from the published record

  1. 3 Feb 2026

    Received by St Albans

  2. 4 Feb 2026

    Validated

    Checked as complete and ready for consideration.

  3. 22 Apr 2026

    Decision issued: Certificate of Lawfulness Approved

  4. 7 Sep 2026

    Added to PlanIndex

Documents

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

6 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 a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About lawful development applications

How this application type works

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

Nearby applications

Within 500 metres

  • 12 Leycroft Way Harpenden Hertfordshire Al5 1Jw

    5/2026/1067 Submitted 2 Jun 2026 187m away

    First floor side extension over existing single storey side projection, with new pitched roof to match existing roof form and front elevational treatment in character with existing building. Garage conversion to habitable accommodation. Alterations to exi

    Decided Householder Extension 16 docs
    Small domestic

  • 9 Leycroft Way Harpenden Hertfordshire Al5 1Jw

    5/2025/1666 Submitted 9 Sep 2025 187m away

    Infilling of side window, enlarged the rear doors and installation of roof lights

    Decided Householder Loft or dormer Windows or glazing 10 docs
    Domestic

  • 29 Leycroft Way Harpenden Hertfordshire Al5 1Jw

    5/2016/1811 Submitted 8 Jun 2016 187m away

    Part single part two storey side extension following demolition of existing garage, alteration to ground floor roof over the entrance porch and alterations to first floor roof incorporating rooflights

    Decided Householder Extension Loft or dormer +1 15 docs
    Small domestic

  • 28 Sibley Avenue Harpenden Hertfordshire Al5 1Hf

    5/2026/0559 Submitted 20 Mar 2026 249m away

    First floor rear extension, raising of the roof height of the existing flat-roofed side extension, and construction of a new lean-to roof over the existing single-storey rear extension

    Decided Householder Extension 28 docs
    Small domestic

  • 60-66 Oakley Road Harpenden Hertfordshire Al5 1Hj

    5/2016/1870 Submitted 20 Jun 2016 337m away

    Discharge of Condition 3 (design of proposed doors) of planning permission 5/2016/0569 dated 12/04/2016 for Replacement windows and doors

    Granted Conditions Windows or glazing 4 docs

  • 26-32 Oakley Road Harpenden Hertfordshire Al5 1Hj

    5/2016/1911 Submitted 20 Jun 2016 337m away

    Discharge of Condition 3 (design of proposed doors) of Planning Permission 5/2016/0574 dated 12/04/2016 for Replacement windows and doors

    Granted Conditions Windows or glazing 4 docs

In St Albans

  • 5/2026/1607 Decided

    5 Flavian Close St Albans Hertfordshire Al3 4Jx

    Certificate of Lawfulness (proposed) - Construction of single storey rear extension with tiled lean to roof fitted with 3no. roof lights

    1 Sep 2026 Lawful development
  • 5/2026/0951 Refused

    23 Clarence Road St Albans Hertfordshire Al1 4Np

    Certificate of Lawfulness (proposed) - New single storey garden room and close boarded access gates

    15 May 2026 Lawful development
  • 5/2026/1558 Granted

    31 Highfield Avenue Harpenden Hertfordshire Al5 5Ub

    Certificate of Lawfulness ( Proposed) - Proposed rear single-storey extension, side single-storey extension and removal of rear chimney stack

    20 Aug 2026 Lawful development
  • 5/2026/0291 Refused

    66 Pondfield Crescent St Albans Hertfordshire Al4 9Pf

    Certificate of Lawfulness (proposed) - Hip to gable and new dormer

    16 Feb 2026 Lawful development
  • 5/2026/1252 Refused

    7 Palfrey Close St Albans Hertfordshire Al3 5Re

    Certificate of Lawfulness (proposed) - Single storey/ground floor extension to dining room, to extend as far as kitchen rear/outside wall across to party wall. Repositioning French windows to new rear of room, and repositioning downpipe and soak away in r

    30 Jun 2026 Lawful development