17 Grosvenor Street Westminster W1K 4QH
Variation of condition 1 of planning permission dated 2nd April 2026 (RN:25/09112/FULL) for the Installation of air source heat pump in modified plant enclosure; green roof and rooflights; modifications to front mansard profile and front elevation. Namely, omission of 3 rooflights over the 4th floor and addition of a dormer window at the 4th floor rear and addition of a mechanical vent and heat recovery unit at the rear of the central flat roof. (Application under section 73 of the Act)
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Progress
Application details
- Reference
- 26/05516/FULL
- Local authority
- Westminster
- Postcode
- W1K 4QH
- Ward
- WEW_22
- Application type
- All Other
- Property type
- Flat
Key dates
- Submitted
- 13 Aug 2026
- Validated
- 13 Aug 2026
- Comments close
- 30 Sept 2026
- Target decision
- 8 Oct 2026
Estimated project value
£37k–£100k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.
- 70 PARK STREET, LONDON, W1K 2JTTerraced · £4,000,0002 months ago19 Jun 2026
- APARTMENT 6, 17 THREE KINGS YARD, LONDON, W1K 4JTFlat or maisonette · Leasehold · £3,950,0003 months ago8 Jun 2026
- 5A MOUNT STREET, LONDON, W1K 3NEFlat or maisonette · Leasehold · £6,400,0003 months ago5 Jun 2026
- 9 SOUTH STREET, LONDON, W1K 2XAOther · Leasehold · Not a standard market sale · £12,000,0003 months ago20 May 2026
- 7 AVERY ROW, LONDON, W1K 4ALFlat or maisonette · Leasehold · Not a standard market sale · £710,0004 months ago7 May 2026
- 25 NORTH ROW, LONDON, W1K 6DJOther · Leasehold · Not a standard market sale · £2,750,0004 months ago28 Apr 2026
- FLAT 2, 68 SOUTH AUDLEY STREET, LONDON, W1K 2QYFlat or maisonette · Leasehold · £5,375,0004 months ago13 Apr 2026
- FLAT 18, 51 SOUTH STREET, LONDON, W1K 2XLFlat or maisonette · Leasehold · £8,600,0005 months ago30 Mar 2026
Homes here go for about £5,375,000 — the median of the last 5 market sales in W1K (the wider postcode district), £3,950,000 to £8,600,000.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
Nearby applications
- 17 Grosvenor Street Westminster W1K 4QHPermittedNext door
- 17 Grosvenor Street Westminster W1K 4QHPermittedNext door
- 18 Grosvenor Street Westminster W1K 4QQPermittedNext door
- 18 - 20 Grosvenor Street Westminster W1K 4QHPermittedNext door
- 18-20 Grosvenor Street 18-20 Brook's Mews Westminster W1K 4QHPermittedNext door
- 20 Grosvenor Street Westminster W1K 4QWPermittedAdjoining