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W1K — Mayfair & Grosvenor Square

Westminster · Outward postcode district · Land Registry data 2018–2026

Westminster Updated 2026
Median price · 2025
£3,643,750
↓ 8.9% vs 2023
Average price · 2025
£4,655,292
30 residential transactions ↓ 28.1% vs 2023
Terraced median · 2025
£6,720,000
3 sales ↓ 20.5% vs 2023
Flat median · 2025
£3,185,000
27 sales ↓ 18.3% vs 2023

W1K is a London outward postcode in Mayfair & Grosvenor Square, Westminster. Browse property, services and rentals for this postcode district. Residential sold-price summaries from HM Land Registry for W1K span 2018–2026 below (headline totals exclude non-residential “Other” transfers).

Sold prices by property type

2025 data
2018
2019
2020
2021
2022
2023
2024
2025
2026
Terraced
£7,756,667 3 sales
Flat / maisonette
£4,310,694 27 sales

Source: HM Land Registry Price Paid Data (Open Government Licence). Averages exclude “Other” non-residential transfers.

Full data table

Data source: HM Land Registry Price Paid Data.

Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

CheckLondon uses processed rows from the Price Paid Data extract to produce London sold-price statistics. London postcode hub pages show public aggregate statistics only and do not display individual residential addresses. Transaction-level listings on this site do not include residential street addresses.

Headline year totals count residential sales only (Detached, Semi-detached, Terraced, Flat / maisonette). Land Registry type Other is shown in the breakdown but excluded from headline totals.

Yearly summary (residential)

Year Transactions Average price Median price
2026 1 £897,500 £897,500
2025 30 £4,655,292 £3,643,750
2024 66 £5,852,844 £3,575,000
2023 67 £6,475,966 £4,000,000

By year and property type

Year Property type Average price Median price Transactions
2026 Flat / Maisonette (F) £897,500 £897,500 1
2025 Flat / Maisonette (F) £4,310,694 £3,185,000 27
2025 Other (O) £7,314,369 £2,850,000 41
2025 Terraced (T) £7,756,667 £6,720,000 3
2024 Detached (D) £19,687,700 £19,687,700 2
2024 Flat / Maisonette (F) £4,871,333 £3,075,000 58
2024 Other (O) £5,696,097 £2,062,500 39
2024 Semi-detached (S) £9,200,000 £9,200,000 1
2024 Terraced (T) £11,035,000 £6,000,000 5
2023 Flat / Maisonette (F) £6,041,286 £3,900,000 62
2023 Other (O) £11,989,230 £2,975,000 31
2023 Terraced (T) £11,866,000 £8,450,000 5
More (2022 and earlier, or outside 2023–2026)
Year Property type Average price Median price Transactions
2022 Flat / Maisonette (F) £9,320,950 £4,750,000 88
2022 Other (O) £10,721,134 £2,015,000 46
2022 Terraced (T) £9,747,200 £7,150,000 5
2021 Flat / Maisonette (F) £6,537,116 £2,565,000 74
2021 Other (O) £7,384,310 £1,550,000 27
2021 Terraced (T) £5,545,577 £4,500,000 5
2020 Flat / Maisonette (F) £9,063,110 £5,350,000 104
2020 Other (O) £3,598,167 £994,800 18
2020 Semi-detached (S) £7,250,000 £7,250,000 1
2020 Terraced (T) £8,815,500 £7,750,000 5
2019 Flat / Maisonette (F) £8,853,688 £2,800,000 65
2019 Other (O) £4,576,199 £403,800 23
2019 Terraced (T) £21,675,000 £21,675,000 2
2018 Flat / Maisonette (F) £3,634,981 £3,225,000 44
2018 Other (O) £13,218,155 £5,050,000 26
2018 Terraced (T) £11,984,400 £6,350,000 5