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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
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VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
SW1X 9HHHouse Prices / London, Westminster, William Street
Last updated May 2026
Key Postcode Insights
SW1X 9HH is a residential postcode situated on William Street, London, SW1 with 9 addresses.
It ranks as the 669th largest and 1002nd most expensive of the 1,807 postcodes in the SW1X area. The dominant property type is a period flat built between 1800 and 1911.
The postcode contains a total of 9 properties: 9 flats.
9
Properties
- Flats
Key Postcode Insights
SW1X 9HH is a residential postcode situated on William Street, London, SW1 with 9 addresses.
It ranks as the 669th largest and 1002nd most expensive of the 1,807 postcodes in the SW1X area. The dominant property type is a period flat built between 1800 and 1911.
The postcode contains a total of 9 properties: 9 flats.
9
Properties
- Flats
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House Pricesin SW1X 9HH
Sale prices range from £1,334,512 for 3 bedroom Leasehold flats (2,185 ft2) to £1,363,973 for 3 bedroom Leasehold flats with a garden (1,668 ft2) .
Monthly rental prices range from £5,587 pcm for 3 bed flats to £5,642 pcm for 3 bed flats.
The gross rental yield is between 5.0% and 5.0%.
The average value per square foot is £663.
Average Sale Value
£1,337,785
Average Rental Value
£5,593 pcm
Average Rental Yield
5.0% /year
Average Value Per Sqft
£663 /ft2
Sales Market Trendsin SW1X 9HH
The last sale in SW1X 9HH sold for £1,850,000 on 16th August 2004. Since then prices are down an average of 0.0%.
The current average value in the postcode is £1,337,785.
The SW1X 9HH Sales Market has decreased by 12.7% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 0.2% | £1,337,785 |
| April 2025 | -3.6% | £1,335,320 |
| April 2024 | -0.2% | £1,384,997 |
| April 2023 | 0.4% | £1,388,315 |
| April 2022 | 2.9% | £1,383,053 |
| April 2021 | -5.8% | £1,344,200 |
| April 2020 | 4% | £1,426,216 |
| April 2019 | -5.1% | £1,371,749 |
| April 2018 | -2.4% | £1,445,377 |
| April 2017 | -3.4% | £1,480,833 |
| April 2016 | -1.4% | £1,532,583 |
| April 2015 | -0.9% | £1,554,507 |
| April 2014 | 14.1% | £1,568,971 |
| April 2013 | 13% | £1,374,745 |
| April 2012 | 17.7% | £1,216,928 |
| April 2011 | 9.7% | £1,033,536 |
| April 2010 | 11.2% | £942,460 |
| April 2009 | -7.7% | £847,648 |
| April 2008 | 23.2% | £918,352 |
| April 2007 | 0% | £745,614 |
Rental Market Trendsin SW1X 9HH
The current average rental value in the postcode is £5,593.
The SW1X 9HH Rental Market has increased by 42.2% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| April 2026 | 9.8% | £5,593pcm |
| April 2025 | 3.2% | £5,093pcm |
| April 2024 | 1.6% | £4,934pcm |
| April 2023 | 14.6% | £4,857pcm |
| April 2022 | 23.5% | £4,237pcm |
| April 2021 | -13.2% | £3,431pcm |
| April 2020 | -0.8% | £3,953pcm |
| April 2019 | 0.4% | £3,985pcm |
| April 2018 | 2.5% | £3,969pcm |
| April 2017 | -1.5% | £3,873pcm |
| April 2016 | -2.9% | £3,932pcm |
| April 2015 | -2.9% | £4,051pcm |
| April 2014 | 0.9% | £4,171pcm |
| April 2013 | 0.3% | £4,132pcm |
| April 2012 | 7.9% | £4,119pcm |
| April 2011 | 12.2% | £3,818pcm |
| April 2010 | 6.5% | £3,402pcm |
| April 2009 | -9% | £3,193pcm |
| April 2008 | 12.7% | £3,508pcm |
| April 2007 | 0% | £3,114pcm |
Explore Buildingsin SW1X 9HH, William Street, London, SW1
Sales Historyin SW1X 9HH
The last sale was on 16th August 2004 for £1,850,000 and since then the market in the area has remained stable. The postcode has had a total of 4 sales since 1995.
SW1X 9HH has seen no sales in the last three years and no sales in the last twelve months.
Sold Aug 2004£1,850,000 | 3 Bed FlatWilliam Street House, William StreetFlat 5, William Street House, William Street, London, SW1X 9HH
Sold Jul 2002£1,250,000 | 3 Bed FlatWilliam Street House, William StreetFlat 5, William Street House, William Street, London, SW1X 9HH
Sold Aug 1999£763,250 | 3 Bed FlatWilliam Street House, William StreetFlat 5, William Street House, William Street, London, SW1X 9HH
Sold Jan 1996£400,000 | 3 Bed FlatWilliam Street House, William StreetFlat 1, William Street House, William Street, London, SW1X 9HH
Nearby Postcodesto SW1X 9HH
SW1X 9HH is the 669th largest and the 1002nd most expensive postcode out of the 1,807 postcodes in the SW1X area.
- 39 mSW1X 9HL, William Street, London, SW1SW1X 9HL12 Addresses
- 42 mSW1X 8EJ, Kinnerton Place North, London, SW1SW1X 8EJ10 Addresses
- 43 mSW1X 8EL, Studio Place, London, SW1SW1X 8EL12 Addresses
- 50 mSW1X 8EE, Bowland Yard, London, SW1SW1X 8EE8 Addresses
- 55 mSW1X 8ET, Duplex Ride, London, SW1SW1X 8ET1 Addresses
- 57 mSW1X 8EW, Studio Place, London, SW1SW1X 8EW5 Addresses
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Property Typesin SW1X 9HH
- 9 period flats built between 1800 and 1911
- period flat (9)
Energy Efficiencyof properties in SW1X 9HH
- Energy Performance Certificate (EPC) surveys conducted for 6 properties.
- The dominant rating is C.
- A (0)
- E (0)
- B (0)
- F (0)
- C (4)
- G (0)
- D (2)
- No EPC (3)
Top 3 Most Expensive Saleson William Street
- Sold Sep 2023£15,200,000 | 3 Bed Flat1, William StreetApartment 4, 1, William Street, London, SW1X 9HL
- Sold Mar 2024£2,650,000 | 2 Bed Flat1, William StreetApartment 7, 1, William Street, London, SW1X 9HL
- Sold Sep 2025£2,550,000 | 2 Bed Flat1, William StreetApartment 9, 1, William Street, London, SW1X 9HL
Schools Nearbyto SW1X 9HH
The nearest primary school to SW1X 9HH is Holy Trinity CofE Primary School which is 924 metres away.
- 924mHoly Trinity CofE Primary School
- 971mSt George's Hanover Square CofE Primary School
- 1.0kmSt Peter's Eaton Square CofE Primary School
The nearest secondary school is St. Thomas More Language College which is 1.0 kilometres away.
- 1.0kmSt. Thomas More Language College
- 1.4kmWestminster City School
- 1.8kmThe Grey Coat Hospital
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Public Transport Nearbyto SW1X 9HH
The closest station to SW1X 9HH is Knightsbridge station which is 400 metres away.
- 362mKnightsbridge
- 408mHyde Park Corner
- 1.0kmSloane Square
- 1.2kmLondon Victoria