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£19,500,000
Asking price

7 bed house for sale Cowley Street, Westminster, London, SW1P

7 beds 7 baths House
Freehold

Added on 13/02/2026

About this property

It is hard to imagine a home as regal and unique as the Mansion House. Originally designed by Horace Field, its untold heritage and prestige are evident throughout. Meticulously renovated, this historic property will make a truly exceptional family home. The house is over 15m wide and has an array of illustrious period features such as the sweeping central staircase, the spacious oak-panelled drawing room, and the ornate gilt cupola.

Property type
House
Bedrooms
7
Bathrooms
7
Floor area
11,080 sq ft
Tenure
Freehold
Council tax band
G
Postcode
SW1P 3NB
Listed
13 Feb 2026

Key features

  • AC
  • Georgian Architecture
  • Grand Staircase
  • High Ceilings
  • Lift
  • Massive Rooms
  • Original Period Features
  • Private Garden
  • Private Gym
  • Private Pool

Floorplan

Price guide

This home
£1,760 / sq ft
Area average (sold)
£1,066 / sq ft
Price per area, sold homes nearby
Lowest
This home
Highest

£1,760 per sq ft — above 9 in 10 recent sales in SW1P (£786–£1,426, 10th–90th percentile, 244 sales over 24 months).

Lowest and highest are the 10th and 90th percentiles of 244 homes sold in SW1P over the last 24 months. This home's figure uses its asking price. All sold £/sq ft in SW1P →

Location

Cowley Street, Westminster, London, SW1P, SW1P 3NB

Sold prices on Cowley Street

HM Land Registry sales on Cowley Street — none recorded yet for SW1P 3NB. Floor areas from Energy Performance Certificates where matched.

AddressSoldSizePrice
17, Cowley Street SW1P 3LZ TerracedMar 20252,067 sq ft £1,694/sq ft£3,500,000
19, Cowley Street SW1P 3LZ TerracedOct 20235,899 sq ft £2,034/sq ft£12,000,000
7, Cowley Street SW1P 3NB TerracedJan 2018£5,625,000
14, Cowley Street SW1P 3LZ TerracedDec 20152,185 sq ft £1,602/sq ft£3,500,000
12, Cowley Street SW1P 3LZ TerracedSept 20122,110 sq ft £1,303/sq ft£2,750,000
18, Cowley Street SW1P 3LZ TerracedNov 2010£1,300,000
15, Cowley Street SW1P 3LZ TerracedAug 19991,819 sq ft £478/sq ft£870,000

All sold prices in Westminster →

Area insights

The neighbourhood around this property.

Marketed by
United Kingdom Sotheby's International Realty, Mayfair
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