31 Castle Street Southampton SO14 6HE

1. 11 Aug 2026

   Received by Southampton

2. 18 Aug 2026

   Added to PlanIndex

3. Decision

   Awaiting decision

   Decision expected by 6 October 2026, 8 weeks from validation under the statutory target for most applications. Extensions of time are common and are agreed case by case.

   Southampton took a median of 55 days over the applications it decided in the last year.

This application is with Southampton for determination, against a statutory target of eight weeks. Over the last year Southampton decided lawful development applications in a median of 56 days. More in our guide to how long planning decisions take.

A lawful development certificate is a legal determination that existing or proposed works do not need planning permission; the merits of the scheme are not considered. More in our guide to planning application types.

• 40 Castle Street Southampton SO14 6HF

  23/00127/ELDC Submitted 30 Jan 2023 50 yards away

  Application for lawful development certificate for established existing use as house in multiple occupation (C4 use class).

  Granted Lawful development 6 docs

• 56 Middle Street Southampton SO14 6HD

  22/00735/FUL Submitted 13 May 2022 50 yards away

  Erection of ground floor single storey rear extension and first floor rear extension with alterations to fenestration, and associated cycle and bin storage.

  Granted Full applications Extension Windows or glazing 22 docs
  Small domestic

• 59 Bath Street Southampton SO14 6GR

  23/00060/PLDC Submitted 19 Jan 2023 50 yards away

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

  Granted Lawful development Extension 3 docs
  Small domestic

• Garage Between 70-73 Bath Street Southampton SO14 6GR

  20/01455/DIS Submitted 27 Oct 2020 100 yards away

  Application for approval of details reserved by condition 2(Details of building materials to be used) and 4(Energy & Water) of permission 19/01450/FUL for erection of 1 x two-storey three bedroom dwelling with associated works following demolition of existing garages.

  Granted Conditions Demolition 3 docs
  Domestic

• 15A Middle Street Southampton SO14 6GH

  26/01113/DIS Submitted 28 Sep 2026 100 yards away

  90% historically approved · decision due ~23 Nov

  Application for approval of details reserved by condition 4(Water & Energy) and 7(Refuse & Recycling) of permission 23/01003/FUL for erection of a two storey side extension to provide 1 x 1-bedroom dwelling

  Awaiting decision Extension
  Domestic

• 53 Middle Street Southampton SO14 6HU

  22/00657/FUL Submitted 29 Apr 2022 100 yards away

  Erection of a single storey side and rear extension

  Granted Full applications Extension 4 docs
  Small domestic

• 26/01031/PLDC Awaiting decision

  231 Winchester Road Southampton SO16 6TP

  Application for a lawful development certificate for proposed use of part of the premises for pet care and treatment facility.

  Received 8 Sep, published by the council 10 Sep 2026 Lawful development
• 26/00980/PLDC Awaiting decision

  Unit C Atlantic Works Oakley Road Southampton SO16 4LL

  Application for a lawful development certificate for proposed use as indoor sport, recreation or fitness (Class E(d)).

  Received 21 Aug, published by the council 27 Aug 2026 Lawful development
• 26/00954/ELDC Awaiting decision

  5 Windrush Road Southampton SO16 9DE

  Application for a lawful development certificate for the existing use as a house in multiple occupation (HMO, Class C4).

  Received 17 Aug, published by the council 24 Aug 2026 Lawful development
• 26/00650/PLDC Refused

  158 Millbrook Road East Southampton SO15 1JR

  Application for a lawful development certificate for proposed use as offices (use class E).

  Received 4 Jun, published by the council 25 Jul 2026 Lawful development
• 26/00626/ELDC Granted

  82 Newcombe Road Southampton SO15 2FS

  Application for a lawful development certificate for the existing use as a house in multiple occupation (HMO, Class C4).

  Received 29 May, published by the council 25 Jul 2026 Lawful development