20 Hillside Avenue Southampton SO18 1JY

1. 9 Jan 2026

   Received by Southampton

2. 17 Feb 2026

   Decision issued: Prior Approval Not Required

3. 25 Jul 2026

   Added to PlanIndex

Southampton granted permission on 17 February 2026, 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.

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.

• 14 Hillside Avenue Southampton SO18 1JY

  22/00752/FUL Submitted 19 May 2022 0m away

  Erection of a single-storey rear extension

  Granted Full applications Extension 6 docs
  Small domestic

• 72 Hillside Avenue Southampton SO18 1JY

  22/01036/FUL Submitted 17 Aug 2022 0m away

  Erection of an external first floor platform and stairs to the side of the dwelling.

  Refused Full applications 10 docs
  Domestic

• 12 Hillside Avenue Southampton SO18 1JY

  22/01708/FUL Submitted 23 Dec 2022 0m away

  Erection of an outbuilding to front for storage, with parking area above and associated excavation works

  Granted Full applications 4 docs

• 107 Hillside Avenue Southampton SO18 1JZ

  26/00510/FUL Submitted 4 May 2026 40m away

  Loft conversion with roof alterations and dormer on rear elevation and alterations to side elevation fenestration.

  Granted Full applications Loft or dormer Roofing +1 4 docs

• 91 Hillside Avenue Southampton City Of Southampton SO18 1JZ

  22/00237/FUL Submitted 15 Feb 2022 40m away

  Erection of a single-storey side extension

  Granted Full applications Extension 5 docs
  Small domestic

• 15 Newton Road Southampton SO18 1NJ

  22/00831/PLDC Submitted 1 Jun 2022 89m away

  Application for a lawful development certificate for a proposed loft conversion

  Granted Lawful development Loft or dormer 5 docs

• 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