31 Castle Street Southampton SO14 6HE

1. 11 Aug 2026

   Validated

   Checked as complete and ready for consideration.

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 54 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's median decision took 54 days. More in our guide to how long planning decisions take.

The published feed does not state which type of application this is; the register entry on Southampton's portal will say. Our guide explains the common types.

• 40 Castle Street Southampton SO14 6HF

  23/00127/ELDC Submitted 30 Jan 2023 40m 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 41m 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 50m away

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

  Granted Lawful development Extension 3 docs
  Small domestic

• 53 Middle Street Southampton SO14 6HU

  22/00657/FUL Submitted 29 Apr 2022 95m away

  Erection of a single storey side and rear extension

  Granted Full applications Extension 4 docs
  Small domestic

• 4 Castle Street Southampton SO14 6HA

  25/00989/ELDC Submitted 31 Jul 2025 98m away

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

  Granted Lawful development 7 docs

• Alberta Villa Mordaunt Road Southampton SO14 6GP

  22/01236/FUL Submitted 14 Oct 2022 100m away

  Erection of a single-storey rear extension, and roof alterations, including front and rear dormer windows, to form accommodation in the roof space.

  Granted Full applications Extension Loft or dormer +2 4 docs
  Small domestic