
Justin Mason is a deeply experienced valuer and surveyor of prime and super-prime property. He is also a respected expert witness, providing reports for Court purposes and facing cross-examination at High Court level. Justin’s entry to property began in 1989, graduating in Land Management before qualifying as a chartered surveyor and building a career in well-respected firms. He spent over a decade with Knight Frank, much of it as a partner, and has an encyclopaedic knowledge of London’s premier postcodes as well as a natural ability to connect with clients. Justin is a Member of the Royal Institution of Chartered Surveyors, an RICS Registered Valuer and a Member of the Academy of Experts.
Most read
American tech mogul reportedly buys £42mn Holland Park mansion
Former Google boss Eric Schmidt is said to have acquired the Grade II-listed super-prime residence last year.
By PrimeResi
Knight Frank seals deal for new global HQ in the City
Real estate giant signs up for 72,400 sq ft space at Aviva Investors' One Liverpool Street.
Investor targets 100-home portfolio in Prime Central London amid market reset
European real estate firm has been capitalising on 'historically attractive' pricing in some of the capital's most exclusive neighbourhoods, snapping up 22 freehold houses over the last year.
London’s HNW exodus gathers pace as international home-buyers look elsewhere
UK estate agency Hamptons has seen interest from international buyers fall to the lowest level on record, while Henley & Partners reports a tripling of enquiries from wealthy Brits looking to relocate…
By PrimeResi
Brokerage secures £60mn of super-prime listings in Little Venice
Firm claims big market share gain in west London 'oasis'.
London knocked out of world’s top five richest cities as millionaires exit
The world's wealthiest cities in 2025: Of the top 50 international HNW hubs, only the UK & Russian capitals have seen their millionaire populations decline over the last decade.
By PrimeResi
Trump’s tariffs & stock market turmoil: Industry insiders on the potential impacts for UK prime property
'When sentiment sours, it’s the high-end, optional purchases that stall first'
In Pictures: ‘One of the most extraordinary development opportunities to come to market in recent years’ seeks £16mn
The historic St. John’s Seminary in the Surrey Hills has planning consent for 52 new homes, presenting an opportunity for a developer to create a magnificent prime residential project.
By Adam Hesse
Rock legend’s former Marylebone party pad seeks £5.5mn
Sub-penthouse at Harley House - where Mick Jagger partied with Marianne Faithfull & Rolling Stones bandmate Keith Richards - has hit the open market for the first time in 30 years.
Agency sells £50mn of luxury Hampstead homes in bumper Q1
Knight Frank's local prime sales team tucked away some 'landmark' properties in the first quarter.
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£100mn backing for new Central London property investment & development venture
SevenCitiesLdn has been set up by two former Thackeray Group directors, targeting 'value-add real estate opportunities.'
By PrimeResi
Green light for 452 Nobu-branded residences in Manchester
Set of top-end apartments will be housed in the UK's tallest tower outside London.
Prime lettings market returns to growth
Savills had six prospective tenants for every London rental property on its books in March.
By PrimeResi
Weekly Showcase: Ten featured prime resi listings
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Postcard from Portugal: Sustained international demand & eco-conscious living as standard
'A persistent supply shortage & strong international demand are keeping the market highly competitive, particularly in premium locations,' says Portuguese estate agency boss Christophe Londot.