About us

Who reviews your evidence

Simon Dredzen is ideally placed to advise on your property's Indicative Value. His family has been part of the prime central London property market for generations, and Simon has been active in it himself for over two decades, as both a selling agent and a property finder. He joined the family firm, Aldine Honey & Company, and in 2001 founded Walton Estates in Knightsbridge. He has also been a property owner in Kensington and Chelsea, so he knows these streets as an owner as well as an agent.

Before property, Simon read Law at Oxford, practised for six years as a commercial litigation solicitor, and was an investment banker.

Simon personally reviews every Property Value Evidence Pack before it reaches you.

Our Indicative Values are evidence reviews, not RICS valuations. Where a formal valuation would help, Simon can introduce you to one of several RICS-qualified surveyors he works with, so you can obtain a Red Book valuation to support an appeal, only where the sums justify it and with your agreement.

Challenge Mansion Tax is independent. It is not connected with HMRC, the Valuation Office Agency or any local council, and we don't take a percentage of your savings.