1/17
£4,750,000
Flat · 2 beds · 3 baths · 1,764 sq ft
South Street, Mayfair, W1K
Leasehold
1/17
1/17
3 bed flat for sale South Street, Mayfair, W1K
Asking price
£7,500,000
Added on 21/09/2026
Added on 21/09/2026
- Type
- Flat
- Bedrooms
- 3
- Bathrooms
- 3
- Size
- £3,025 per sq ft
- Tenure
- Leasehold
EPC Energy rating band C 70
Key features
- AC
- Built in Kitchen Appliances
- Built in Wardrobes
- CCTV
- Central A/C & Heating
- Fireplace
- High Ceilings
- Lift
- Listed Building
- Marble Finishings
- Modern Finishings
- Parking
- Security
- Share of freehold
- Walk in Closet
- Wooden Floors
- Storage Units
About this property
This elegantly renovated three-bedroom apartment is set within a grand mansion block. The development, carried out by the award-winning team at Luxlo, combines luxurious finishes with contemporary design, all within close reach of Berkeley Square and Grosvenor Square.
The hallway is generously proportioned, with high ceilings and an abundance of natural light, immediately creating a sense of grandeur. Overlooking the scenic Mount Street Gardens, the spacious reception room is designed for both entertaining and relaxation. Oak flooring runs underfoot and complements custom-built cabinetry.
Floorplan
Energy performance
Energy rating band C 70
Current
Potential
92+
A
81-91
B
69-80
C
Current rating: 70 C
Potential rating: 80 C
55-68
D
39-54
E
21-38
F
1-20
G
This home is rated band C, scoring 70 out of 100. The average British home is band D. Its certificate says it could reach band C (80) if the improvements it recommends were carried out.
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
- ListedSeptember 2026 £7,500,000
3 beds · 3 baths · this listing
Past sales can't be shown: the agent hasn't given the flat number.
Price guide
100 comparables · within 0.8 milesPriced above 85% of the 3-bed flats for sale nearby right now.
This home, £7,500,000 Median £2,950,000 · £1,844,500 – £10,050,000
Per square foot
£3,025 55% over
3-bed flats nearby £1,953
Against sold prices
16% over
W1K sold median £2,600 / sq ft, 42 sales
Compared with 100 3-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 W1K over the last 24 months, per square foot of EPC floor area. All sold £/sq ft in W1K →
Location
South Street, Mayfair, W1K
Mortgage and stamp duty
Property price £7,500,000
£3.8m £11.3m
Deposit10% £750,000
£0 £7.5m
Interest rate 4.5%
0.5% 15%
Repayment period 25 years
5 years 40 years
A £6,750,000 mortgage. Most lenders would want a household income of about £1,500,000 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 |
|---|---|---|---|---|---|---|
| Flat 18, 51, South Street Flat / maisonette | Flat / maisonette | Mar 2026 | 2,616 sq ft £3,288/sq ft | 2,616 sq ft | £3,288 | £8,600,000 |
| Flat 21, 51, South Street Flat / maisonette | Flat / maisonette | Mar 2025 | 2,799 sq ft £2,787/sq ft | 2,799 sq ft | £2,787 | £7,800,000 |
| Flat 19, 51, South Street Flat / maisonette | Flat / maisonette | Dec 2022 | 2,400 sq ft £3,749/sq ft | 2,400 sq ft | £3,749 | £9,000,000 |
| Flat 25, 51, South Street Flat / maisonette | Flat / maisonette | Dec 2019 | 1,475 sq ft £1,204/sq ft | 1,475 sq ft | £1,204 | £1,775,000 |
| Flat 2, 51, South Street Flat / maisonette | Flat / maisonette | Jul 2019 | 2,293 sq ft £3,424/sq ft | 2,293 sq ft | £3,424 | £7,850,000 |
| Flat 22, 51, South Street Flat / maisonette | Flat / maisonette | Mar 2019 | 2,411 sq ft £2,126/sq ft | 2,411 sq ft | £2,126 | £5,125,000 |
| Flat 15, 51, South Street Flat / maisonette | Flat / maisonette | Nov 2014 | 2,723 sq ft £140/sq ft | 2,723 sq ft | £140 | £380,000 |
| Flat 4a, 51, South Street Flat / maisonette | Flat / maisonette | Aug 2013 | 1,066 sq ft £1,548/sq ft | 1,066 sq ft | £1,548 | £1,650,000 |
All sales on South Street → All sold prices in Westminster →
Area insights
The neighbourhood around this property.
Marketed by
United Kingdom Sotheby's International Realty, Mayfair - United Kingdom Sotheby's International Realty
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