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Planning application

121 Thornhill Park Road Southampton SO18 5TT

Granted Southampton 21/00392/PAH Prior Approval Large Household Extension

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

Erection of a single storey rear extension (Max Depth 4 m, Max Height 3.5 m, Eaves Height 2.35m)

As published by the council, reference 21/00392/PAH

Application record

Reference
21/00392/PAH
Type
Prior Approval Large Household Extension
Status
Decided
Decision
Prior Approval Not Required
Received
9 Mar 2021
Validated
9 Mar 2021
Decided
7 Apr 2021
Ward
Harefield
Decision by
Delegated Decision
Postcode
SO18 5TT

Site history

Applications at this address on the Southampton register

This site has had 2 applications since 2021: 2 approved, 0 refused.

  • 26/00085/TPO Granted

    121 Thornhill Park Road Southampton SO18 5TT

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

    Decided 12 May 2026 Trees

Timeline

Dates from the published record

  1. 9 Mar 2021

    Received by Southampton

  2. 7 Apr 2021

    Decision issued: Prior Approval Not Required

  3. 17 Sep 2026

    Added to PlanIndex

Documents

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

5 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 this grant of permission means

Southampton granted permission on 7 April 2021, subject to any conditions on the decision notice. Work must normally begin within three years or the permission lapses. More in our guide to what happens after a planning decision.

About prior approval applications

Prior approval applies where permitted development rights already grant the principle of the work, leaving the council only the specific matters the rules name, commonly within 56 days. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 123 Thornhill Park Road Southampton SO18 5TT

    26/00557/PAH Submitted 8 Jun 2026 15m away

    89% historically approved · decision due ~3 Aug

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

    Decided Extension
    Small domestic

  • 121 Thornhill Park Road Southampton SO18 5TT

    26/00085/TPO Submitted 18 Mar 2026 16m away

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

    Granted Trees 4 docs

  • 116 Thornhill Park Road Southampton SO18 5TS

    23/00285/TPO Submitted 26 Oct 2023 105m away

    T1 Beech - Fell

    Granted Trees 3 docs

  • 92 Thornhill Park Road Southampton SO18 5TS

    24/00334/FUL Submitted 27 Mar 2024 105m away

    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).

    Granted Full applications New dwelling Demolition 16 docs
    Domestic

  • 14 Kootenay Avenue Southampton SO18 5RE

    21/00218/TPO Submitted 23 Jul 2021 109m away

    Tree Works

    Granted Trees 3 docs

  • 14 Kootenay Avenue Southampton SO18 5RE

    21/00297/TPO Submitted 25 Oct 2021 109m away

    Sweet Chestnuts, marked as T1 to T3 on the plan, remove epicormic growth on main stem and reduce and reshape canopy by 3 to 4 metres. Remove deadwood and sever ivy

    Refused Trees 4 docs

In Southampton

  • 26/00674/PLDC Granted

    6 Hanover Buildings Southampton SO14 1JW

    Prior Approval sought for change of use of the upper floors from Commercial, Business and Service (Use Class E) to a 3 bed dwelling (Use Class C3)

    30 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
  • 26/00648/PAH Granted

    27 Exford Avenue Southampton SO18 5DP

    Erection of a single storey rear extension (Max Depth 4 m, Max Height 3.6 m, Eaves Height 2.25 m

    4 Jun 2026 Prior approval
  • 26/00620/PAH Granted

    372 Bitterne Road Southampton SO18 1DR

    Erection of a single storey rear extension (Max Depth 3.9 m, Max Height 4 m, Eaves Height 2.45 m)

    3 Jun 2026 Prior approval
  • 26/00651/PAH Granted

    15 Wilton Gardens Southampton SO15 7QS

    Erection of a single storey rear extension (Max Depth 4 m, Max Height 3.5 m, Eaves Height 3 m)

    4 Jun 2026 Prior approval