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Planning application

1 St Helens Close Southsea PO4 0NN

Granted Portsmouth 25/01273/HOU Householder Planning Application

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

Construction of single storey side extension (following removal of existing conservatory)

As published by the council, reference 25/01273/HOU

Application record

Reference
25/01273/HOU
Type
Householder Planning Application
Status
Awaiting decision
Decision
Conditional Permission
Received
3 Nov 2025
Validated
13 Nov 2025
Decided
16 Dec 2025
Ward
Eastney & Craneswater
Decision by
Fully Delegated Decision
Postcode
PO4 0NN

Site history

Applications at this address on the Portsmouth register

This site has had 2 applications since 2025: 1 approved, 0 refused.

  • 25/01172/HOU Withdrawn

    1 St Helens Close Southsea PO4 0NN

    Construction of single storey side extension

    Decided 5 Nov 2025 Householder

Timeline

Dates from the published record

  1. 3 Nov 2025

    Received by Portsmouth

  2. 13 Nov 2025

    Validated

    Checked as complete and ready for consideration.

  3. 16 Dec 2025

    Decision issued: Conditional Permission

  4. 25 Jul 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Thorns Young Ltd Agent, registered in Hampshire

Active · incorporated 2001 · Hampshire

138 applications on PlanIndex · across 6 councils · 90% granted

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Documents

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

15 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.

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What this grant of permission means

Portsmouth granted permission on 16 December 2025, 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 householder applications

Householder applications cover work to an existing house and its garden, such as extensions, lofts and outbuildings, and cannot create a separate dwelling or change what the building is used for. More in our guide to planning application types.

Nearby applications

Within 500 metres

  • 1 St Helens Close Southsea PO4 0NN

    25/01172/HOU Submitted 9 Oct 2025 0m away

    Construction of single storey side extension

    Withdrawn Householder Extension 6 docs
    Small domestic

  • Canoe Lake Nursery Eastern Parade Southsea PO4 9RF

    25/01308/FUL Submitted 6 Nov 2025 141m away

    83% historically approved · decision due ~13 Feb

    Retrospective application for construction of temporary structure to provide children's nursery

    Awaiting decision Full applications 9 docs

  • 3 Fenton Court 4 - 5 Craneswater Park Southsea PO4 0NR

    25/01231/TPO Submitted 21 Oct 2025 183m away

    Within Tree Preservation Order 237, (T16) Whitebeam (Sorbus Aria) re-pollard to previous points; (T14) Lime (Tilia x europaea) re-pollard to previous points, removal of dead wood and remove the stem epicormic growth; (T7) Sweet Chestnut (Castanea Sativa) re-pollard to previous points and reduce dead stem by up to 3m; (T6) Sycamore (Acer Pseudoplatanus) re-pollard to previous points; (T3) Lime (Tilia x europaea) re-pollard to previous points; (T11, T12) 2x Sycamore (Acer pseudoplatanus) re-pollard to previous points

    Granted Trees 2 docs

  • 9 Helena Road Southsea

    26/00141/FUL Submitted 5 Feb 2026 184m away

    Conversion from 3no. self-contained flats (Class C3) to single dwellinghouse (Class C3) including construction of single storey rear and side extension, relocation of garage and associated alterations

    Granted Full applications New dwelling Extension 9 docs
    Small domestic

  • 14 St Helens Parade Southsea PO4 0QJ

    25/01457/HOU Submitted 12 Dec 2025 220m away

    87% historically approved · decision due ~17 Feb

    Retrospective application for construction of dormer windows to front and rear roofslopes, replacement rooflights and replacement windows

    Awaiting decision Householder Loft or dormer Windows or glazing 11 docs
    Domestic

  • 14 Helena Road Southsea PO4 9RH

    25/01125/CPL Submitted 25 Sep 2025 227m away

    Application for a Lawful Development Certificate for the proposed construction of single storey gazebo to rear garden

    Granted Lawful development 8 docs
    Small domestic

In Portsmouth

  • 25/01493/HOU Granted

    77 Victoria Road South Southsea PO5 2BU

    Construction of single storey rear and side extension with terrace at first floor (following removal of existing extension and garage), alterations to fenestration and installation of heat pump

    19 Dec 2025 Householder
  • 26/00497/HOU Awaiting decision

    46 Carmarthen Avenue Portsmouth PO6 2AQ

    Construction of two storey rear extension (following removal of existing) and enlargement of front porch

    17 Apr 2026 Householder
  • 26/00095/HOU Refused

    96 Portsdown Road Portsmouth PO6 4QH

    Alterations to roof to include hip to gable buildup and construction of dormer windows to front and rear roofslopes

    29 Jan 2026 Householder
  • 25/01455/HOU Granted

    77 Station Road Portsmouth PO6 1PJ

    Alterations to roof to include hip to gable buildup, and dormer window to rear roofslopes

    11 Dec 2025 Householder
  • 26/00115/HOU Granted

    1 Court Mead Portsmouth PO6 2LT

    Construction of rear and side single storey extension

    2 Feb 2026 Householder