The Royal Marsden Hospital, East Wing, Downs Road, SM2 5PT

What is being proposed

Application to vary condition 1 (approved drawings), 5 (fire safety strategy), 6 (solar PV array details) and 7 (acoustic assessment) of planning permission Ref: DM2024/01127 for the 'Erection of a part one, part two storey upwards extension from the original single storey building to provide plant rooms/enclosures housing extraction ducts/flues and rooftop ventilation, provision of external access stairs, solar panels to new flat roof and alterations to the existing ground floor internal layout' to allow for reduction to the first floor footprint of the building, altered fire escape plan and route with alterations to external staircases, alterations to number of PV panels and locations of flue enclosures, relocation of chiller plants and installation of acoustic attenuators to chiller units.

Description as published by Sutton.

What this could mean for you

These are the effects a proposal like this most often raises. Each one is a material planning consideration, so each can form the basis of a comment.

• Daylight and overshadowing
• Noise and disturbance
• Overlooking and loss of privacy
• Parking pressure
• Traffic and access

Derived automatically from the proposal wording. Read the full application before relying on it.

Timeline

1. Received

   30 Jul 2026 · Submitted to the council

2. Validated

   30 Jul 2026 · Checked and published

3. Comments close

   28 Aug 2026 · Last day to have your say

4. Decision due

   24 Sept 2026 · Target date, often slips

5. Decided

   21 Sept 2026 · Outcome published

Key facts

Reference

DM2026/00685

Authority

Sutton

Address

The Royal Marsden Hospital, East Wing, Downs Road, SM2 5PT

Postcode

SM2 5PT

Type

Energy

Scale

Medium

Storeys

2

Applicant

Not published

Agent

Not published

Received

30 Jul 2026

Decision due

24 Sept 2026

View on the Sutton register

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