Planning application
51 Montford Road Sunbury-on-Thames TW16 6EJ
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
Timeline
Dates from the published record
-
16 Dec 2025
Received by Spelthorne
-
4 Feb 2026
Decision issued: Grant Cert Lawful Prop Use/Dev
-
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 recordDocuments
Plans, drawings, consultee responses and the officer's report
15 documents on file for this application
- AMENDED
- AMENDED
- AMENDED
- CPCPDZ CERT PROPOSED DEV
- DELEGATED REPORT UPDATED 24.6.20
- ACKCPD ACK LETTER CPD
- APPLICATIONFORMREDACTED
- FEECALCULATION
- ATTACHMENTSUMMARY
- LOCATION PLAN
- EXISTING GROUND AND FIRST FLOOR PLANS
- EXISTING REAR, FRONT AND SIDE ELEVATION PLANS
- SUPERSEDED
- SUPERSEDED
- SUPERSEDED
Watch members (£5 a month) open the document list from here.
Open the documentsWhat 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
Erection of a front porch
Granted Householder Extension 13 docsSmall domestic -
21 Anvil Road Sunbury-on-Thames TW16 6NQ
Erection of a single storey front extension
Granted Householder Extension 8 docsSmall domestic -
3 Forge Lane Sunbury-on-Thames TW16 6EE
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 docsSmall domestic -
4 Stile Path Sunbury-on-Thames TW16 6EH
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
Erection of a single storey front porch extension.
Granted Householder Extension 8 docsSmall domestic -
28 Halliford Road Sunbury-on-Thames TW16 6DR
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 docsSmall domestic
Other lawful development applications
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.
-
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)
-
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.
-
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)
-
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.