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2 bed flat for sale One Casson Square, London, SE1

Asking price

£1,650,000

Added on 29/09/2026

Type: Flat
Bedrooms: 2
Bathrooms: 2
Size: £1,597 per sq ft
Tenure: Ask agent

EPC B 86

Key features

Stunning apartment
1,033 sq ft (96 sqm)
High floor
Residents' health club and restorative spa
Exclusive residents' lounge and private dining area
24 hour concierge

About this property

This elegantly designed high floor two bedroom apartment, with secure undergound parking, is available for chain free sale through Prime London in One Casson Square, Southbank Place. The apartment extends to 1,033 sq ft (96 sqm) of beautifully presented internal living space and features a generous open plan reception area, creating an excellent environment for both everyday living and entertaining. Finished to an exceptional standard throughout, the property also enjoys impressive views and an abundance of natural light.

Floorplan

Energy performance

B 86

Current

Potential

92+

81-91

86 B

69-80

55-68

39-54

21-38

1-20

This home is rated band B, scoring 86 out of 100. The average British home is band D.

Read from the certificate published with this listing, so it may not be the latest one. Check the government EPC register for the full certificate and its recommendations.

Council tax

Ask agent

Per year

Band A

£700
Band B

£816
Band C

£933
Band D

£1,050
Band E

£1,283
Band F

£1,516
Band G

£1,749
Band H

£2,099

The agent hasn't said which band this home is in; you can look it up on GOV.UK. In Westminster, 2026/27 bills run from £700 a year in band A to £2,099 in band H.

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.

Property timeline

Listed

September 2026 £1,650,000

2 beds · 2 baths · this listing

Past sales can't be shown: the agent hasn't given the flat number.

Price guide

100 comparables · within 0.7 miles

Priced above 77% of the 2-bed flats for sale nearby right now.

This home, £1,650,000 Median £900,000 · £598,000 – £2,205,000

Per square foot

£1,597 44% over

2-bed flats nearby £1,107

Against sold prices

95% over

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

Compared with 100 2-bed flats for sale within 0.7 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

One Casson Square, London, SE1

Open map Street View

Mortgage and stamp duty

Property price £1,650,000

£820k £2.5m

Deposit10% £165,000

£0 £1.7m

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £1,485,000 mortgage. Most lenders would want a household income of about £330,000 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
3502, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Jan 2025	n/a	n/a	n/a	£9,519,524
3001, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Oct 2022	n/a	n/a	n/a	£3,750,000
3004, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Aug 2022	n/a	n/a	n/a	£3,828,000
3101, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Apr 2022	n/a	n/a	n/a	£4,025,000
2804, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Mar 2022	n/a	n/a	n/a	£3,420,000
2901, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Feb 2022	n/a	n/a	n/a	£3,438,500
3201, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Nov 2021	n/a	n/a	n/a	£3,975,000
3404, 1, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Nov 2021	n/a	n/a	n/a	£3,024,000