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Planning application

90 Napsbury Avenue London Colney Hertfordshire Al2 1Ls

Granted St Albans 5/2016/1830 Certificate of Lawfulness - (proposed)

Works: Extension Small 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 (Proposed) - Single storey rear extension 6m depth x 3.95m height x 3m in height to the eaves

As published by the council, reference 5/2016/1830

Application record

Reference
5/2016/1830
Type
Certificate of Lawfulness - (proposed)
Status
Approved
Decision
Certificate of Lawfulness Approved
Received
13 Jun 2016
Validated
14 Jun 2016
Decided
4 Aug 2016
Ward
London Colney
Parish
London Colney
Decision by
Delegated
Postcode
AL2 1LS

Timeline

Dates from the published record

  1. 13 Jun 2016

    Received by St Albans

  2. 14 Jun 2016

    Validated

    Checked as complete and ready for consideration.

  3. 4 Aug 2016

    Decision issued: Certificate of Lawfulness Approved

  4. 21 Aug 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

  • 52 Napsbury Avenue London Colney Hertfordshire Al2 1Ls

    5/2026/1277 Submitted 1 Jul 2026 0m away

    Certificate of Lawfulness (proposed) - The proposed development comprises building operations associated with the loft conversion of the existing roof space to provide additional habitable accommodation. The works include the construction of a rear dormer

    Decided Lawful development Loft or dormer 3 docs

  • 90 Napsbury Avenue London Colney Hertfordshire Al2 1Ls

    5/2017/1743 Submitted 18 Jun 2017 0m away

    Part single, part two storey rear extension with alterations to openings following removal of conservatory (retrospective)

    Decided Householder Extension 9 docs
    Small domestic

  • 62 Napsbury Avenue London Colney Hertfordshire Al2 1Ls

    5/2026/1396 Submitted 21 Jul 2026 0m away

    Conversion of a four-bedroom dwelling to one three-bedroom house and one two-bedroom house following part single and part two storey rear extension and roof alterations to front elevation

    Decided Extension Roofing 12 docs
    Domestic

  • 80 Kings Road London Colney Hertfordshire Al2 1Ep

    5/2026/0655 Submitted 30 Mar 2026 43m away

    Certificate of Lawfulness (proposed) - Single storey rear extension

    Granted Lawful development Extension 5 docs
    Small domestic

  • 132 & 132A Kings Road London Colney Hertfordshire Al2 1Ep

    5/2017/2602 Submitted 18 Sep 2017 43m away

    Loft conversion to incorporate the conversion to four, one bedroom flats

    Decided New dwelling Loft or dormer 12 docs

  • 139 Kings Road London Colney Hertfordshire Al2 1Er

    5/2016/2999 Submitted 3 Oct 2016 74m away

    Demolition of garage and construction of two, attached, two bedroom dwellings with associated landscaping, parking and new extended vehicle crossover. Single storey rear extension and replacement porch to existing property.

    Decided Extension Demolition 17 docs
    Small domestic

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