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Planning application

13 Mercer Road Haydock St Helens WA11 0SS

Granted St. Helens P/2026/0159/HHFP 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

Two storey side extension and single storey rear extension.

As published by the council, reference P/2026/0159/HHFP

Application record

Reference
P/2026/0159/HHFP
Type
Householder Planning Application
Status
Decided
Decision
Grant
Received
16 Mar 2026
Validated
23 Mar 2026
Decided
15 May 2026
Ward
Haydock Ward
Decision by
Delegated Decision
Postcode
WA11 0SS

Timeline

Dates from the published record

  1. 16 Mar 2026

    Received by St. Helens

  2. 23 Mar 2026

    Validated

    Checked as complete and ready for consideration.

  3. 15 May 2026

    Decision issued: Grant

  4. 24 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Agent on file, an architecture practice registered in St. Helens

21 applications on PlanIndex · across 5 councils · 100% granted

Trade members see who it is, their full track record, and every application they have filed.

See who's behind it

Documents

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

11 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.

Trade members open them from here.

Open the documents

What a grant of permission means

The process from here

Permission has been granted, usually subject to conditions listed on the decision notice, some of which must be discharged before work starts. The decision notice on the council portal sets out exactly what was approved.

Work must normally begin within three years of the decision or the permission lapses. Neighbours cannot appeal a grant; challenging one means judicial review of how the decision was made, within tight time limits.

About householder applications

How this application type works

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

Nearby applications

Within 500 metres

  • 9 Mercer Road Haydock St Helens WA11 0SS

    P/2021/0970/HHFP Submitted 3 Nov 2021 17m away

    Demolition of existing conservatory and erection of a new conservatory.

    Granted Householder Extension Demolition 11 docs
    Small domestic

  • 9 Mercer Road Haydock St Helens WA11 0SS

    P/2021/0976/HHFP Submitted 5 Nov 2021 18m away

    Part two storey, part single storey side extension.

    Granted Householder Extension 6 docs
    Small domestic

  • 7 Mercer Road Haydock St Helens WA11 0SS

    P/2026/0232/HHFP Submitted 7 May 2026 26m away

    Single storey side and rear extension.

    Granted Householder Extension 6 docs
    Small domestic

  • 10 Mercer Road Haydock St Helens WA11 0SS

    P/2023/0566/HHFP Submitted 3 Oct 2023 40m away

    Single storey rear and side wraparound extension and open front porch.

    Granted Householder Extension 7 docs
    Small domestic

  • 24 Woolston Road Haydock St Helens WA11 0FQ

    P/2026/0347/HHPA Submitted 2 Jul 2026 66m away

    94% historically approved · decision due ~31 Aug

    Prior approval for single storey rear extension, projecting 4.05m from the rear, 3.6m max height, and 2.32m at the eaves.

    Decided Extension
    Small domestic

  • 8 Poplar Grove Haydock St Helens WA11 0SR

    P/2022/0003/HHFP Submitted 24 Dec 2021 83m away

    Two storey side extension.

    Granted Householder Extension 10 docs
    Domestic

In St. Helens

  • P/2026/0446/HHFP Awaiting decision

    8 Coylton Avenue Rainhill St Helens L35 0PT

    Rear ground floor extension, first floor side extension and conversion of garage/front porch space.

    1 Sep 2026 Householder
  • P/2026/0447/HHFP Awaiting decision

    32 Oakdale Drive St Helens WA9 5TU

    Garage conversion.

    1 Sep 2026 Householder
  • P/2026/0229/HHFP Granted

    7 Festival Road Rainford St Helens WA11 8EP

    Single storey rear extension.

    2 May 2026 Householder
  • P/2026/0229/CLP Granted

    7 Festival Road Rainford St Helens WA11 8EP

    Single storey rear extension.

    2 May 2026 Householder
  • P/2026/0248/HHFP Granted

    30 High Street Newton Le Willows St Helens WA12 9SN

    Replacement windows and rebuild chimney stack.

    3 Feb 2026 Householder