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1 bed flat for sale Casson Square, London, SE1

Guide price

£890,000

Added on 18/10/2026

Type: Flat
Bedrooms: 1
Bathrooms: 1
Size: £1,728 per sq ft
Tenure: Leasehold

Council tax Band F £1,516 a year

Key features

18th Floor Apartment
24hr concierge service
Landmark Modern Development
Located on The Southbank
24hr security

About this property

Perched on the 18th floor, this stylish one-bedroom apartment offers contemporary living in one of London's landmark developments. The modern kitchen is fully equipped with state-of-the-art Miele appliances, including a dishwasher, oven, and fridge/freezer, ensuring both functionality and elegance. The spacious reception room, enhanced by floor-to-ceiling windows, provides an abundance of natural light and ample space for dining and relaxation.

Floorplan

Council tax

Band F £1,516 a year

Per year

Band A

£700
Band B

£816
Band C

£933
Band D

£1,050
Band E

£1,283
Band F

This home: £1,516
Band G

£1,749
Band H

£2,099

This home is in band F, which costs £1,516 a year in Westminster for 2026/27.

Figures from MHCLG (Open Government Licence v3): the average bill for each band across Westminster, including the typical parish precept, so a parish's own bill can differ a little. Discounts lower the bill, such as 25% off for an adult living alone. Check a home's band on GOV.UK.

Price guide

100 comparables · within 0.8 miles

Priced above 77% of the 1-bed flats for sale nearby right now.

This home, £890,000 Median £685,500 · £375,000 – £1,250,000

Per square foot

£1,728 38% over

1-bed flats nearby £1,249

Against sold prices

111% over

SE1 sold median £820 / sq ft, 1,276 sales

Compared with 100 1-bed flats for sale within 0.8 miles, on the market now or already under offer. The range is the middle 80% of their asking prices. Sold prices are HM Land Registry sales in SE1 over the last 24 months, per square foot of EPC floor area. All sold £/sq ft in SE1 →

Location

Casson Square, London, SE1

Open map Street View

Mortgage and stamp duty

Property price £890,000

£445k £1.3m

Deposit10% £89,000

£0 £890k

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £801,000 mortgage. Most lenders would want a household income of about £178,000 to support it.

A guide only, for a capital repayment mortgage. The rate you are offered and what you can borrow depend on your circumstances and a full application with a lender or broker. Your home may be repossessed if you do not keep up repayments on your mortgage.

Properties sold nearby

HM Land Registry sales nearby. Floor areas from Energy Performance Certificates where matched.

Address	Type	Sold	Size	Size	£/sq ft	Price
401, 1, Casson Square Flat / maisonette	Flat / maisonette	Feb 2023	366 sq ft £1,735/sq ft	366 sq ft	£1,735	£635,000
1205, 1, Casson Square Flat / maisonette	Flat / maisonette	Dec 2022	1,012 sq ft £1,606/sq ft	1,012 sq ft	£1,606	£1,625,000
1105, 1, Casson Square Flat / maisonette	Flat / maisonette	Apr 2022	1,012 sq ft £1,482/sq ft	1,012 sq ft	£1,482	£1,500,000
1308, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Mar 2022	388 sq ft £1,935/sq ft	388 sq ft	£1,935	£750,000
1007, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Jan 2022	657 sq ft £1,448/sq ft	657 sq ft	£1,448	£950,600
408, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Dec 2021	388 sq ft £1,497/sq ft	388 sq ft	£1,497	£580,000
Apartment 3203, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Dec 2021	1,033 sq ft £2,153/sq ft	1,033 sq ft	£2,153	£2,225,000
1201, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Dec 2021	366 sq ft £1,794/sq ft	366 sq ft	£1,794	£656,600