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Planning application

6/2021/1835/PN27

33 The Avenue Welwyn AL6 0PW

Granted Welwyn Hatfield Class AA - Enlargement of a dwellinghouse by construction of additional storeys - Prior Approval

Proposal

Prior approval for the construction of an additional storey to facilitate the enlargement of the dwellinghouse to a maximum of approximately 9.02m in height.

As published by the council, reference 6/2021/1835/PN27

Timeline

Dates from the published record

  1. 11 Jun 2021

    Received by Welwyn Hatfield

  2. 6 Aug 2021

    Decision issued: Prior Approval Required and Granted

  3. 30 Jul 2026

    Added to PlanIndex

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 prior approval applications

How this application type works

Prior approval applications arise where permitted development rights already grant the principle of the work, such as larger home extensions, changes of use to housing or agricultural buildings. The council may only consider the specific matters set out in the rules, for example transport, flooding or appearance, and in many classes the work may proceed if the council does not respond within the deadline, commonly 56 days.

More on prior approval applications in our guide

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Within 500 metres

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In Welwyn Hatfield

  • 6/2026/0895/PN8 Granted

    29 Roe Green Lane Hatfield AL10 0SH

    Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 2.8m to the eaves following demolition of detached garage

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  • 6/2026/1265/PN8 Awaiting decision

    1 Newstead Hatfield AL10 9DH

    Prior approval for a single storey rear extension measuring 6.00m in depth, 2.60m to the eaves and the maximum height of 3.00m

    20 Jul 2026 Prior approval
  • 6/2026/0995/PN8 Granted

    2 Corner View Welham Green Hatfield AL9 7DH

    Prior approval for a single storey rear extension measuring 4m in depth, 2.2m to the eaves and the maximum height of 3.6m

    5 Jun 2026 Prior approval
  • 6/2026/1217/PN8 Awaiting decision

    48 Great Ganett Welwyn Garden City AL7 3DE

    Prior approval for a single storey rear extension measuring 4m in depth, 3m to the eaves and the maximum height of 3m

    13 Jul 2026 Prior approval
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