121 St Mary Street Southampton SO14 1PG

This site has had 2 applications since 2026: 1 approved, 1 refused.

• 26/00903/PA2A Refused

  121 St Mary Street Southampton SO14 1PG

  Permitted Development Assessment - Prior Approval sought for an additional 1 storey to provide 1 x two bed flat

  Decided 28 Sep 2026

1. 20 Jan 2026

   Received by Southampton

2. 16 Mar 2026

   Decision issued: Approve with Conditions

3. 25 Jul 2026

   Added to PlanIndex

Southampton granted permission on 16 March 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.

A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.

• 120 St Mary Street Southampton City Of Southampton SO14 1PG

  22/01026/FUL Submitted 8 Aug 2022 50 yards away

  Conversion of existing 1st and 2nd floor 2 bedroom dwelling in to 2 dwellings (2x1 bed flats) with associated storage - and the retention of ground floor shop with bedsit above. No external changes

  Granted Full applications New dwelling 17 docs
  Several homes

• 126 St Mary Street Southampton SO14 1PG

  22/00882/DIS Submitted 15 Jun 2022 50 yards away

  Application for approval of details reserved by condition 2(Refuse & Recycling) and 3(Bicycle storage) of permission 20/01288/PAC3 for prior approval for a change of use of part of the ground floor from shop (use class A1) to residential (use class C3)

  Granted Conditions 6 docs

• 120 St Mary Street Southampton SO14 1PG

  26/00802/FUL Submitted 9 Jul 2026 50 yards away

  91% historically approved · decision due ~3 Sep

  Conversion of 1st and 2nd floor dwelling into 2x1 bed flats, with ground floor storage.

  Awaiting decision Full applications New dwelling 13 docs
  Domestic

• 121 St Mary Street Southampton SO14 1PG

  26/00903/PA2A Submitted 3 Aug 2026 50 yards away

  Permitted Development Assessment - Prior Approval sought for an additional 1 storey to provide 1 x two bed flat

  Refused

• 126 St Mary Street Southampton SO14 1PG

  20/01288/PAC3 Submitted 22 Sep 2020 50 yards away

  Prior approval for a change of use of part of the ground floor from shop (use class A1) to residential (use class C3)

  Granted Prior approval 12 docs

• 126 St Mary Street Southampton SO14 1PG

  20/00833/PLDC Submitted 30 Jun 2020 50 yards away

  Application for a lawful development certificate for 2 x proposed first floor dwellings (1 x 1 bed and 1 x studio [Class C3]).

  Granted Lawful development 8 docs

• 26/01148/FUL Awaiting decision

  135 Bellemoor Road Southampton SO15 7QW

  Erection of a two-storey detached three-bedroom dwelling.

  Full applications
• 26/01192/FUL Awaiting decision

  35 High Road Southampton SO16 2JE

  Retrospective application for conversion of 2 flats to form 4 flats (2 x 1 bed 2 x bedsits)

  Full applications
• 26/01100/FUL Awaiting decision

  21-25 Northam Road Southampton SO14 0NZ

  Alterations and reconfiguration of site from two commercial units (Use Class E) 2x1-bedroom flats and a dwelling to provide 3x1-bedroom flats, 1 x 2-bedroom flat and one ground floor commercial unit (Use Class E), together with replacement bay window to front elevation

  Full applications
• 26/01227/FUL Awaiting decision

  37 Portswood Road Southampton SO17 2ET

  Formation of vehicular access with dropped kerb.

  Full applications
• 26/01226/FUL Awaiting decision

  15 Boldrewood Road Southampton SO16 7BW

  Erection of single storey rear extension with balcony above and roof alterations including dormer windows to facilitate loft conversion.

  Full applications