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Planning application

26/00557/PAH

123 Thornhill Park Road Southampton SO18 5TT

Granted Southampton Prior Approval Large Household Extension

Proposal

Erection of a single storey rear extension (Max Depth 6 m, Max Height 4 m, Eaves Height 3 m)

As published by the council, reference 26/00557/PAH

Timeline

Dates from the published record

  1. 8 Jun 2026

    Received by Southampton

  2. 15 Jul 2026

    Decision issued: Prior Approval Not Required

  3. 25 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

Nearby applications

Within 500 metres

  • 26/00085/TPO Granted

    121 Thornhill Park Road Southampton SO18 5TT

    T1 Sweetchestnut ( Castanea sativa) pollard to 5 to 6m

    18 Mar 2026 0m away Trees
  • 24/00334/FUL Granted

    92 Thornhill Park Road Southampton SO18 5TS

    Redevelopment of site for erection of a two-storey building comprising 4 x flats (1 x 3-bedroom, 2 x 1-bedroom, 1 x 2-bedroom) with associated amenities following demolition of existing dwelling house (resubmission of: 23/01228/FUL).

    27 Mar 2024 93m away Full applications
  • 22/00209/TPO Refused

    20 Woodland Close Southampton SO18 5RD

    T1 - Sweet chestnut. Fell for the reasons shown in the attached report.

    11 Sep 2022 120m away Trees
  • 26/00376/FUL Granted

    25 Hinkler Road Southampton SO19 6FR

    Erection of single-storey rear extension.

    31 Mar 2026 152m away Full applications
  • 21/00685/FUL Granted

    8 Moorhill Gardens Southampton SO18 5BR

    Erection of single-storey rear extension, following demolition of existing conservatory

    30 Apr 2021 153m away Full applications
  • 22/01154/PLDC Granted

    45 Browning Avenue Southampton City Of Southampton SO19 6QB

    Application for a lawful development certificate for a proposed single storey rear extension.

    12 Aug 2022 176m away Lawful development

In Southampton

  • 26/00718/PAH Granted

    45 Shirley Avenue Southampton SO15 5NH

    Erection of a single storey rear extension (Max Depth 6m, Max Height 4m, Eaves Height 3m)

    18 Jun 2026 Prior approval
  • 26/00568/PA56 Granted

    105 - 107 Bitterne Road West Southampton SO18 1AU

    Permitted Development Assessment - Prior Approval sought for a change of use of the ground floor from office to 2 x 2 bed flats (Use Class C3)

    18 May 2026 Prior approval
  • 26/00805/PAH Awaiting decision

    8 Medina Road Southampton SO15 5QQ

    Erection of a single storey rear extension (Max Depth 3.5m, Max Height 3.7m, Eaves Height 2.5m)

    17 Jul 2026 Prior approval
  • 26/00678/PAH Granted

    8 Lansdowne Road Southampton SO15 4HB

    Erection of a single storey rear extension (Max Depth 5 m, Max Height 3.4 m, Eaves Height 3 m)

    9 Jun 2026 Prior approval
  • 26/00812/PAH Awaiting decision

    99 Maybush Road Southampton SO16 9FH

    Erection of a single storey rear extension (Max Depth 3.5m, Max Height 3m, Eaves Height 2.95m)

    15 Jul 2026 Prior approval