Real estate, sourced and dated. No opinions, just evidence.

London · England

House prices in City of Westminster: August 2026 and purchase tax

A home in City of Westminster cost £887,206 on average in August 2026 (-14.3% over twelve months); at that price, a home mover pays £34,360 of Stamp Duty Land Tax.

Data as of August 2026: average prices of the UK House Price Index (HM Land Registry, Registers of Scotland, Land & Property Services and ONS), all property types. 1,896 sales over the latest twelve months with complete volumes.

City of Westminster: the market in figures

Behind only Kensington and Chelsea, Westminster takes 2nd place nationally out of 135, and 2nd again among London's 13. At £887,206 it stands 60% beyond London's £554,430 and 224.9% beyond the UK's £273,037.

Its story is of a long slide. The price peaked in 2021 at £1,178,953, after a rise of 13.6% that year, and has fallen in each year since: 3%, 2.1%, 3%, 4.7% and now 14.3% over twelve months, against 2.2% for London. The current value is the lowest of the series, below the £957,502 of 2019 and the £1,049,018 of 2016. Across the decade that amounts to a loss of 15.4%, or £161,812. No other area among its five neighbours has fallen by as much in a single year.

Looking at types, a detached house averages £3,935,497 and a semi-detached home £2,810,593. Terraced homes come to £1,641,592 and flats to £784,694. The spread between a flat and a detached house is £3,150,803, or 401.5%. Those buying a first home average £791,770, 10.8% below the all-buyer level.

First-time relief is not in play at this price, so the Stamp Duty Land Tax bill is £34,360 for a standard purchase and for a first-time buyer alike, which is 3.9% of the price. An additional property owes £78,721. HM Land Registry charges £295.

Kensington and Chelsea (£1,204,072) is the single neighbour above Westminster, by 35.7%. Camden (£798,486) is 10% lower, Hammersmith and Fulham (£754,825) 14.9% lower, Wandsworth (£694,210) 21.8% lower and Lambeth (£540,198) 39.1% lower. All five fell over twelve months, by between 5.1% in Hammersmith and Fulham and 14.3% in Westminster itself, which makes Westminster the steepest faller of the group.

A count of 1,896 sales covers June 2025 to May 2026, a modest figure that goes with the high price level. For a reader following the fall, that count is large enough to make the drop of 14.3% more than the effect of a few unusual deals.

Payotte, from the UK HPI and the calculator.

Property professionals in City of Westminster

One firm per trade, selected by Payotte on public data (1 of 5 trades filled in City of Westminster). Companies, never individuals, with a regulator or register you can check with the official body.

Estate agent Vacant: no firm selected yet
● Vacant
Mortgage adviser Vacant: no firm selected yet
● Vacant
Conveyancer William Sturges LLP Solicitors LLP · Burwood House, 14-16 Caxton St, London SW1H 0QY ★ 4.7 (94)
74/100
Selected
Surveyor Vacant: no firm selected yet
● Vacant
Valuer Vacant: no firm selected yet
● Vacant
The selected firms: City of Westminster, one per trade
TradeFirmGoogle ratingReviewsScore /100StatusListing
Estate agent Vacant — — — — —
Mortgage adviser Vacant — — — — —
Conveyancer William Sturges LLP Solicitors 4.7 94 74 Selected View
Surveyor Vacant — — — — —
Valuer Vacant — — — — —

One firm per trade and per area, chosen on public data and scored out of 100 points — Google reviews (35), age of the company (30), checkable regulator or register (15), local anchoring (15), bonus (5). The ranking is never paid for. No firm can buy its place or its recommendation. How Payotte ranks firms

Calculate for City of Westminster

If you buy

Stamp Duty Land Tax and registration in City of Westminster

Rates of HMRC, set at the average price in City of Westminster (August 2026). Change any field: the amounts are recalculated instantly.

Rates appliedstandard rates
Stamp Duty Land Tax£34,360
Share of the price3.87%
HM Land Registry fee (online application)£295
Total, tax and registration£34,655
Return and payment14 days

Residential purchase by an individual. Not included: conveyancer, survey and lender fees (no official scale). No mortgage figure: Payotte has no official UK mortgage rate to apply. All the rates and sources.

If you sell

Capital Gains Tax on the sale

Your main home, lived in for all the time you owned it: no tax (Private Residence Relief). A second home or a buy-to-let: Capital Gains Tax, same rates in all four nations.

Gain£0
Taxable after the £3,000 allowance£0
Rate—
Capital Gains Tax£0

Gain within the £3,000 tax-free allowance: nothing to pay. Assumes no other gains this tax year and the whole £3,000 allowance unused (2026 to 2027).

Default example: bought at the average price in City of Westminster in August 2016 (£1,049,018), sold at the August 2026 average (£887,206), UK House Price Index. Rates for 2026 to 2027: 24% for higher and additional rate taxpayers; for basic rate taxpayers, 18% on the part of the gain that fits in the £37,700 basic Income Tax band once added to taxable income (income minus Personal Allowance), 24% above (HMRC). Gain = sale price − purchase price − costs of buying, selling and improving; Payotte does not estimate those costs (no official scale). GOV.UK: Capital Gains Tax rates · Tax when you sell your home.

Frequently asked questions

What is the average house price in City of Westminster?

The average price of a home in City of Westminster was £887,206 in August 2026, -14.3% over twelve months (UK House Price Index).

Have house prices gone up in City of Westminster?

The average price in City of Westminster went from £1,049,018 in August 2016 to £887,206 in August 2026, a change of -15.4%; -14.3% over the last twelve months (UK House Price Index).

How much Stamp Duty Land Tax on an average-priced home in City of Westminster?

On £887,206, Stamp Duty Land Tax (SDLT) comes to £34,360 for a home mover, £34,360 for a first-time buyer and £78,721 for an additional property, at the rates in force in England.

How much tax when you sell a home in City of Westminster?

None on your main home if it was your only home, lived in for all the time you owned it, not let out and not used exclusively for business (Private Residence Relief). A second home or a buy-to-let pays Capital Gains Tax above the £3,000 allowance (2026 to 2027; rates in the calculator above). The tax is reported and paid within 60 days of completion (HMRC).

Is City of Westminster expensive?

City of Westminster ranks 2nd of the 135 areas Payotte covers for the average price in August 2026, from £1,204,072 in Kensington and Chelsea to £133,782 in City of Aberdeen.

Prices by property type, August 2026

TypeAverage priceLondon
Detached£3,935,497£1,164,439
Semi-detached£2,810,593£730,580
Terraced£1,641,592£648,650
Flat or maisonette£784,694£427,310
All types£887,206£554,430
First-time buyers£791,770£473,051

The UK HPI is a mix-adjusted average (a hedonic model), not the price of the homes sold in the month. Northern Ireland figures are quarterly.

The trend, August of each year

YearAverage priceChange on the year before
2016£1,049,018—
2017£1,100,913+4.9%
2018£1,044,328-5.1%
2019£957,502-8.3%
2020£1,037,669+8.4%
2021£1,178,953+13.6%
2022£1,143,826-3%
2023£1,119,681-2.1%
2024£1,085,770-3%
2025£1,035,221-4.7%
2026£887,206-14.3%

Sources