17 Hertford Street, W1J 7RS
Work to an existing home, 3-storey
Westminster · Reference 26/03410/LBC
Comment period closed
What is being proposed
Replacement of the mansard infill extension to the south east of the property by extending the existing bay upwards by a single storey (3-storeys total) and associated roof works to improve the internal space. (Linked with 26/03409/FULL)
Description as published by Westminster.
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
Derived automatically from the proposal wording. Read the full application before relying on it.
Timeline
Received
11 Jun 2026 · Submitted to the council
Validated
11 Jun 2026 · Checked and published
Comments close
7 Jul 2026 · Last day to have your say
Decision due
6 Aug 2026 · Target date, often slips
Decided
27 Aug 2026 · Outcome published
Key facts
- Reference
- 26/03410/LBC
- Authority
- Westminster
- Address
- 17 Hertford Street, W1J 7RS
- Postcode
- W1J 7RS
- Type
- Extension or home alteration
- Scale
- Medium
- Storeys
- 3
- Applicant
- Not published
- Agent
- Not published
- Received
- 11 Jun 2026
- Decision due
- 6 Aug 2026
Also happening nearby
17 Hertford Street, W1J 7RS
A planning application
Internal alterations to the basement including new lightweight timber-stud partitions to reorganise the existing basement layout; Installation of new sanitaryware in a newly configured bathroom; Replacement of modern kitchen fittings; and Installation of traditional four-panel timber doors, architraves and ironmongery designed to match existing doors.