Council planning record

Formation of new garden outbuilding.

Garden Flat 39 Onslow Road Richmond TW10 6QH

The decision has been made on the application.Reference: PA26/2350London Borough of Richmond upon Thames

Last published check: 4 Oct 2026, 00:54. Check the council record for more recent changes.

Application location

Garden Flat 39 Onslow Road Richmond TW10 6QH

This record has no verified map location.

Application summary

Status
The decision has been made on the application.
Application type
Full Application
Received
6 Jul 2026
Validated
23 Jul 2026
Determination deadline
15 Sept 2026
Local authority
London Borough of Richmond upon Thames

Application overview

Formation of new garden outbuilding.

Proposal details

Reference
PA26/2350
Alternative references
PP-14990271
Ward
South Richmond Ward [STR]
Agent
McDonnell
UPRN
10002263167

Sign in to view all collected council fields and recorded changes.

Sign in to view collected details

Documents 11 of 11

DocumentPublishedAction
Application Form - Without Personal DataApplication Form - Redacted3 Jul 2026View
Existing & Proposed Plans, Elevations, and Section 101 BSubmitted Drawing3 Jul 2026View
Location Plan 102Submitted Drawing3 Jul 2026View
Community Infrastructure Levy - Completed formCommunity Infrastructure Levy Form3 Jul 2026View
Fire Safety ReportReport3 Jul 2026View
Statement of use (Redacted)Report23 Jul 2026View
Biodiversity Net Gain StatementReport23 Jul 2026View
Heritage StatementReport23 Jul 2026View
Cert b (Redacted)Report23 Jul 2026View
Officer ReportReport2 Sept 2026View
DecisionDecision Notice2 Sept 2026View

Documents open on the council website. Browse council documents if a link has changed.

Application timeline

Council milestones and published deadlines. A deadline passing does not confirm a decision.

  1. Application date

    Published milestoneCouncil source
  2. Received date

    Published milestoneCouncil source
  3. Registration date

    Published milestoneCouncil source
  4. Valid date

    Published milestoneCouncil source
  5. Consultation expiry date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source
  6. Statutory expiry date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source
  7. Dispatch date

    Published milestoneCouncil source
  8. Decision date

    Published milestoneCouncil source
  9. Decision due date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source

Decision & conditions

Refused Permission
Decision
Planning conditions
  1. For the avoidance of doubt the Drawing(s) No(s) and Document(s) to which this decision refers are as follows: Location Plan 102 Existing & Proposed Plans, Elevations, and Section, Proposed formation of new 'garden room' Outbuilding, 101 Rev B Received 03 July 2026
  2. In accordance with DM3 of the National Planning Policy Framework, Richmond upon Thames Borough Council takes a positive and proactive approach to the delivery of sustainable development, by: * Providing a formal pre-application service * Providing written policies and guidance, all of which is available to view on the Council's website * Where appropriate, negotiating amendments to secure a positive decision * Determining applications in a timely manner. In this instance: * The applicants did not seek formal pre-application advice, and the scheme was found to be contrary to policy and guidance, and subsequently refused. The Council is ready to enter into discussions, through the Council's formal pre-application service, to advise the applicants of relevant policy and guidance; and where possible assist in the preparation of a new planning permission. More information on the pre-application service and relevant fees can be found online at www.richmond.gov.uk/pre-application_for_developers.
  3. The proposed garden building, by reason of its siting, height, scale, and bulk would fail to appear subordinate to the host dwelling and would represent an overly dominant and incongruous form of development that which will negatively impact the character and appearance of the host property and appearance of the rear garden environment. The proposal is therefore contrary to Local Plan Policies 15 and 28, 29 and 30, and the guidance contained within the House Extensions and External Alterations SPD, HE5-HE7 of the NPPF (2026), as supported by the St Matthias Richmond Conservation Area Statement and Appraisal.
  4. The development, by reason of the absence of adequate arboricultural information, such as an Arbouricultural Impact Assessment, Tree Protection Plan, and Arbouricultural Method Statement, has failed to demonstrate that the proposal would not detrimentally impact on the health and longevity of nearby trees. The proposal is contrary to the NPPF and Policy 42 of the Local Plan.
  5. The development, by reason of its siting within an area at risk of surface water flooding, and absence of a site-specific flood risk assessment, the application has failed to demonstrate that the development will be safe for its lifetime taking account of the vulnerability of its users, without increasing flood risk elsewhere. Overall, the development proposal has failed to demonstrate compliance with Local Plan policy 8 and London Plan policy SI3, the Strategic Flood Risk Assessment, and F4 (2) of the NPPF 2026.
Related records

Understand this planning record

All planning guides
  • Understanding planning · 13 min read

    Planning application documents: what to read first

    Understand planning application documents, officer reports and decision notices. Use a reading checklist, document table and worked example to inspect a case.

  • Understanding planning · 13 min read

    Planning application statuses explained

    Understand pending consideration, approved, refused and withdrawn planning applications. Compare status labels and find the documents explaining each outcome.

  • Understanding planning · 13 min read

    Planning permission drawings: how to read plans

    Read planning drawings, floor plans, elevations and sections. Use labelled diagrams, a drawing comparison table and revision checks to understand a proposal.