27 Chiltern Street Westminster W1U 7PJ
Installation of three external air-conditioning condenser units within the two existing rear courtyards/lightwells at ground-floor level. Two condenser units will be located within the left-hand courtyard and enclosed within a purpose-built acoustic enclosure, while one condenser unit will be located within the right-hand courtyard and screened by a multi-panel acoustic screen. The proposed acoustic mitigation measures are intended to minimise operational noise and reduce the impact on neighbouring residential properties. The installation will include the necessary associated works to support the operation of the condenser units. No change of use is proposed as part of this application.
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Progress
Application details
- Reference
- 26/07070/FULL
- Local authority
- Westminster
- Postcode
- W1U 7PJ
- Ward
- MBW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 15 Oct 2026
- Validated
- 15 Oct 2026
- Target decision
- 10 Dec 2026
Estimated project value
£21k–£135k
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: trade estimate.
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.
- FLAT 2, 10 - 12 CRAWFORD STREET, LONDON, W1U 6AZFlat or maisonette · Leasehold · £690,0003 months ago20 Jul 2026
- 159 MONTAGU MANSIONS, LONDON, W1U 6LQFlat or maisonette · Leasehold · £1,350,0003 months ago3 Jul 2026
- 97, BICKENHALL MANSIONS BICKENHALL STREET, LONDON, W1U 6BSFlat or maisonette · Leasehold · £1,650,0004 months ago26 Jun 2026
- FLAT B, 34 GEORGE STREET, LONDON, W1U 7DPFlat or maisonette · Leasehold · £1,360,0004 months ago16 Jun 2026
- FLAT C, 34 GEORGE STREET, LONDON, W1U 7DPFlat or maisonette · Leasehold · £1,490,0004 months ago3 Jun 2026
- THIRD FLOOR FLAT 5, 36 NOTTINGHAM PLACE, LONDON, W1U 5NTFlat or maisonette · Leasehold · £827,5004 months ago29 May 2026
- FLAT 9, 30 BLANDFORD STREET, LONDON, W1U 4BYFlat or maisonette · Leasehold · £1,500,0005 months ago19 May 2026
- 61, LUXBOROUGH TOWER LUXBOROUGH STREET, LONDON, W1U 5BNFlat or maisonette · Leasehold · £685,0005 months ago18 May 2026
Homes here go for about £1,355,000 — the median of the last 8 market sales in W1U (the wider postcode district), £685,000 to £1,650,000.
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.
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