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1 bed flat for sale Casson Square, Waterloo, SE1

Offers In Excess Of

£790,000

Added on 26/09/2026

Type: Flat
Bedrooms: 1
Bathrooms: 1
Size: £1,499 per sq ft
Tenure: Leasehold

Key features

One bedroom
One bathroom
Underfloor heating
527 sq ft internal space
Views of the London skyline
Luxury health and fitness club
24 hour concierge
Excellent transport links

About this property

This new stylish, interior designed, one bedroom apartment in the new South Bank, London development. With dual-aspect views across both the city and the river, One Casson Square stands the tallest above the Thames.

The open plan living space flows seamlessly through to the kitchen area equipped with high quality Miele appliances and remarkable finishes. The bathroom is finished to a give a clean lines and a classic finish. With the bedroom giving a spacious and luxurious feel with ample storage.

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.

Property timeline

Listed

September 2026 £790,000

1 bed · 1 bath · this listing

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

Price guide

100 comparables · within 0.8 miles

Priced above 67% of the 1-bed flats for sale nearby right now.

This home, £790,000 Median £670,000 · £399,950 – £1,255,000

Per square foot

£1,499 25% over

1-bed flats nearby £1,199

Against sold prices

83% 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, Waterloo, SE1

Open map Street View

Mortgage and stamp duty

Property price £790,000

£395k £1.2m

Deposit10% £79,000

£0 £790k

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £711,000 mortgage. Most lenders would want a household income of about £158,000 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