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Planning application

51 Montford Road Sunbury-on-Thames TW16 6EJ

Granted Spelthorne 25/01499/CPD Cert. of Lawful Proposed Use and Dev

Works: Extension

Permission granted. Work must normally begin within three years of the decision or the permission lapses.

Proposal

Certificate of lawfulness for proposed ground floor rear extension and internal alterations

As published by the council, reference 25/01499/CPD

Application record

Reference
25/01499/CPD
Type
Cert. of Lawful Proposed Use and Dev
Status
Decided
Decision
Granted As published: Grant Cert Lawful Prop Use/Dev
Received
16 Dec 2025
Validated
16 Dec 2025
Decided
4 Feb 2026
Ward
Halliford And Sunbury West
Parish
Lower Sunbury And Halliford ED
Decision by
Delegated Decision
Postcode
TW16 6EJ

Site history

Applications at this address on the Spelthorne register

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

  • 26/00128/HOU Granted

    51 Montford Road Sunbury-on-Thames TW16 6EJ

    Erection of a front porch

    Decided 2 Apr 2026 Householder

Timeline

Dates from the published record

  1. 16 Dec 2025

    Received by Spelthorne

  2. 4 Feb 2026

    Decision issued: Grant Cert Lawful Prop Use/Dev

  3. 11 Aug 2026

    Added to PlanIndex

Who's behind it

Company information only, from the register and Companies House

Square One Architects Ltd Agent, an architecture practice registered in Covent Garden

Active · incorporated 2015 · Covent Garden

6 applications on PlanIndex · across 3 councils

Trade members see everything this firm has filed, how it was decided, and get an email the day it files again.

See their track record

Documents

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

15 documents on file for this application

  • AMENDED Plans - Block Plan · 04 Feb 2026
  • AMENDED Plans - Elevations · 04 Feb 2026
  • AMENDED Plans - Floor Plans · 04 Feb 2026
  • CPCPDZ CERT PROPOSED DEV Decision Notice · 04 Feb 2026
  • DELEGATED REPORT UPDATED 24.6.20 Officers Report · 04 Feb 2026
  • ACKCPD ACK LETTER CPD Correspondence · 22 Dec 2025
  • APPLICATIONFORMREDACTED Application Form · 16 Dec 2025
  • FEECALCULATION Other Documents · 16 Dec 2025
  • ATTACHMENTSUMMARY Other Documents · 16 Dec 2025
  • LOCATION PLAN Plans - Location Plan · 16 Dec 2025
  • EXISTING GROUND AND FIRST FLOOR PLANS Plans - Floor Plans · 16 Dec 2025
  • EXISTING REAR, FRONT AND SIDE ELEVATION PLANS Plans - Elevations · 16 Dec 2025
  • SUPERSEDED Plans - Block Plan · 16 Dec 2025
  • SUPERSEDED Plans - Floor Plans · 16 Dec 2025
  • SUPERSEDED Plans - Elevations · 16 Dec 2025

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What this grant of permission means

Spelthorne granted permission on 4 February 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.

About lawful development applications

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.

Nearby applications

Within 0.3 miles

  • 51 Montford Road Sunbury-on-Thames TW16 6EJ

    26/00128/HOU Submitted 9 Feb 2026 50 yards away

    Erection of a front porch

    Granted Householder Extension 13 docs
    Small domestic
  • 21 Anvil Road Sunbury-on-Thames TW16 6NQ

    24/01092/HOU Submitted 10 Sep 2024 50 yards away

    Erection of a single storey front extension

    Granted Householder Extension 8 docs
    Small domestic
  • 3 Forge Lane Sunbury-on-Thames TW16 6EE

    23/00272/HOU Submitted 2 Mar 2023 100 yards away

    Erection of a part two storey part single storey side extension, following demolition of existing car port. Single storey rear extension and new front porch.

    Granted Householder Extension Demolition 20 docs
    Small domestic
  • 4 Stile Path Sunbury-on-Thames TW16 6EH

    18/01324/AMD Submitted 8 Jul 2021 150 yards away

    Non-material amendment to planning application no 18/01324/HOU to make rooflight larger and the installation of a new ground floor flank window.

    Granted Amendments Loft or dormer Windows or glazing 5 docs
  • 10 Stile Path Sunbury-on-Thames TW16 6EH

    26/00459/HOU Submitted 5 May 2026 150 yards away

    Erection of a single storey front porch extension.

    Granted Householder Extension 8 docs
    Small domestic
  • 28 Halliford Road Sunbury-on-Thames TW16 6DR

    25/01060/HOU Submitted 27 Aug 2025 150 yards away

    Retrospective application for conversion of garage into utility room and retention of single storey extension attached to front elevation of the converted garage. (as shown on plan no's A101 and A102 rec'd 08.10.2025 and A100, A103, A104, A105 rec'd 27.08.2025).

    Granted Householder Extension 11 docs
    Small domestic

In Spelthorne

  • 26/00916/CPD Awaiting decision

    9 Alexandra Road Ashford TW15 1TW

    Certificate of Lawfulness for proposed conversion of roof space into habitable room, to include a rear dormer and conversion of roof from hip to gable end and 2 no roof lights on front of roof.

    Received 31 Aug, published by the council 9 Sep 2026 Lawful development
  • 26/00452/CLD Granted

    177A Feltham Road Ashford TW15 1BB

    Certificate of Lawfulness for existing use of the ground floor flat as a small HMO (Use Class C4)

    Received 4 May, published by the council 30 Jul 2026 Lawful development
  • 26/00200/CLD Granted

    73 Nursery Gardens Staines-upon-Thames TW18 1EL

    Certificate of Lawfulness to establish the lawful use of the property is as a House in Multiple Occupation (Use Class C4) for up to six occupants. As shown on site location plan and block plan no EX-1003 and Pre-Existing Floor Plans (Page 01 of 02) and Existing Floor Plans (Page 02 of 02) received 27.02.2026.

    Received 26 Feb, published by the council 30 Jul 2026 Lawful development
  • 26/00383/CPD Refused

    13 Meadow Road Ashford TW15 1PL

    Certificate of lawfulness for proposed change of use from a 6 Person HMO (Class C4) to a 7 Person HMO (Sui-Generis)

    Received 14 Apr, published by the council 30 Jul 2026 Lawful development
  • 26/00437/CLD Refused

    4 Sunmead Road Sunbury-on-Thames TW16 6PE

    Certificate of Existing Lawfulness for the conversion of a C3 dwellinghouse to a C4 small 6-person HMO.

    Received 28 Apr, published by the council 30 Jul 2026 Lawful development