UK Sotheby's Has Launched a US Buyer Advisory. I'm Running It.
Half of Mayfair London sales over £5 million are now American
PrimeResi, London — 13 July 2026
UK Sotheby’s International Realty announced this morning that it has launched a bespoke advisory service for American buyers in the UK’s prime residential market. I am leading it as a consultant to the Mayfair firm, while continuing as Executive Vice President at TTR Sotheby’s International Realty here in Washington.
The announcement ran this morning in PrimeResi, London’s trade journal of record for prime residential.
Here is why the advisory exists.
Americans are now UK Sotheby’s largest overseas client group — by transaction volume and by value. Beauchamp Estates puts US nationals at 30% of every sale above £5 million in prime central London this year, up from 20% at the end of 2025. In Mayfair, the American share of sales above £5 million is 50%.
That is not a trend. That is a market.
What that market has lacked is a broker on the American side of the table. The traditional structure is an international desk in London that receives inquiries and routes them. The advisory is the inverse: a single adviser who works for the buyer, and who knows what a Washington client actually needs to understand — how the money moves, where the tax exposure sits, what a 92-year lease means and what it costs to extend, why the survey matters more than the brochure.
I have been doing versions of this since 2016, when I showed One Hyde Park to a client from Washington.
Alex Isidro, Managing Director of UK Sotheby’s International Realty, put it this way in the announcement: the UK is firmly on the radar of American home seekers and investors, and the firm wanted someone who speaks the language of both markets.
Nothing changes in Washington. I am closing here, listing here, and living here. What has changed is that the work I have been doing informally since 2016 — advising Americans buying in London — now has a formal structure behind it, and the resources of Sotheby’s in Mayfair.
If you have been thinking about London, it is a short conversation. My line is open. 202-607-4000
Tomorrow: Andy Burnham’s proposal to replace stamp duty and council tax with an annual levy on property value — and what it would actually mean for an American buying in London.