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Planning application

21/00509/FUL

5 Blenheim Avenue Southampton SO17 1DW

Granted Southampton Full Application

Proposal

Installation of dormer window to side of main roof elevation and refurbishment of pitched roof coverings.

As published by the council, reference 21/00509/FUL

Timeline

Dates from the published record

  1. 29 Mar 2021

    Received by Southampton

  2. 14 Jul 2021

    Decision issued: Approve with Conditions

  3. 27 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 full applications applications

How this application type works

A full application seeks permission for a complete, detailed proposal in one go: siting, design, access and landscaping are all fixed at this stage. It is the standard route for new buildings, conversions and changes of use. The statutory target is eight weeks for smaller schemes and thirteen weeks for major development, though complex cases often take longer by agreement.

More on full applications applications in our guide

Nearby applications

Within 500 metres

  • 21/00514/FUL Granted

    5 Blenheim Avenue Southampton SO17 1DW

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  • 22/00054/TCA Granted

    46 Blenheim Avenue Southampton SO17 1DU

    Silver Birch Trees x3 - Crown reduction to each by 25% as shown in photo. Crown lifting to each to a height of 2.5m

    17 Aug 2022 109m away Trees
  • 26/00664/FUL Awaiting decision

    26 Blenheim Avenue Southampton SO17 1DU

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    26 Jun 2026 109m away Full applications
  • 23/00007/TCA Granted

    46 Blenheim Avenue Southampton SO17 1DU

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    12 Jan 2023 109m away Trees
  • 26/00225/FUL Granted

    6 Blenheim Avenue Southampton SO17 1DU

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    6 Mar 2026 109m away Full applications
  • 25/00052/TCA Granted

    48 Blenheim Avenue Southampton SO17 1DU

    T1 Norway Maple-Reduce and reshape by up to 3 metres. T2 Pyrus-Reduce height by 1 metre and reshape by 60 to 90cm. T3 Cherry-Reduce and reshape by 2 metres. T4 Amalanchia- Reduce height by 1 to 1.5 metres remove crossing branches and light reshaping 30 to 60 cm as required. T5 Snake Bark Maple -Reduce and reshape by 60 to 90cm.

    12 Nov 2025 109m away Trees

In Southampton

  • 26/00584/FUL Granted

    2 Russell Place Southampton SO17 1NU

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    5 Jun 2026 Full applications
  • 26/00031/FUL Granted

    42 High Street Southampton SO14 2NS

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    23 Jan 2026 Full applications
  • 26/00837/FUL Awaiting decision

    7 Leaside Way Southampton SO16 3DN

    Replacement windows.

    24 Jul 2026 Full applications
  • 26/00822/FUL Awaiting decision

    44 St Mary Street Southampton SO14 1NR

    Erection of a first-floor rear extension and addition of a second floor to create 4x studio flats.

    24 Jul 2026 Full applications
  • 26/00642/FUL Granted

    6 Emerald Close Southampton SO19 7ND

    Erection of a single-storey rear extension and installation of decking.

    3 Jun 2026 Full applications