1/21

1 bed flat for sale Casson Square, SE1

Asking price

£895,000

Added on 29/09/2026

Type: Flat
Bedrooms: 1
Bathrooms: 1
Size: £1,356 per sq ft
Tenure: Leasehold

Highlights

From the agent's description

Balcony
Waterfront
24-hour concierge
Residents' gym
Residents' pool
Open-plan kitchen

About this property

A beautifully presented one-bedroom apartment extending to approximately 670 sq ft (62.2 sq m), located within the prestigious Thirty Casson Square development at Southbank Place.

The property offers a generously proportioned open-plan kitchen and reception room, creating an impressive and versatile living space ideal for both entertaining and everyday living. The contemporary kitchen is fitted with high-quality integrated appliances and flows seamlessly into the bright reception area, with floor-to-ceiling glazing providing an abundance of natural light.

Floorplan

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.

Price guide

100 comparables · within 0.8 miles

Priced above 78% of the 1-bed flats for sale nearby right now.

This home, £895,000 Median £695,000 · £375,000 – £1,250,000

Per square foot

£1,356 9% over

1-bed flats nearby £1,249

Against sold prices

65% 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, SE1

Open map Street View

Mortgage and stamp duty

Property price £895,000

£447k £1.3m

Deposit10% £90,000

£0 £895k

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £805,000 mortgage. Most lenders would want a household income of about £179,000 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
603, 30, Casson Square Flat / maisonette	Flat / maisonette	Jul 2026	560 sq ft £1,224/sq ft	560 sq ft	£1,224	£685,000
1106, 30, Casson Square Flat / maisonette	Flat / maisonette	Sept 2025	560 sq ft £1,456/sq ft	560 sq ft	£1,456	£815,000
1103, 30, Casson Square Flat / maisonette	Flat / maisonette	Aug 2025	560 sq ft £1,626/sq ft	560 sq ft	£1,626	£910,000
1002, 30, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	May 2023	657 sq ft £1,751/sq ft	657 sq ft	£1,751	£1,150,000
Apartment 504, 30, Casson Square Flat / maisonette	Flat / maisonette	May 2023	980 sq ft £1,480/sq ft	980 sq ft	£1,480	£1,450,000
Apartment 403, 30, Casson Square Flat / maisonette	Flat / maisonette	Mar 2023	560 sq ft £1,340/sq ft	560 sq ft	£1,340	£750,000
201, 30, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Aug 2022	635 sq ft £1,496/sq ft	635 sq ft	£1,496	£950,000
Apartment 706, 30, Casson Square Flat / maisonette · new build	Flat / maisonette · new build	Jun 2021	560 sq ft £1,510/sq ft	560 sq ft	£1,510	£845,000