“Very proactive and extremely helpful, especially with technical queries. I would not hesitate to recommend and will certainly be using them again in the future.”



Under CDM2015 regs we have found CASS ALLEN to exercise a level of professionalism and due diligence which is second to none. We would therefore definitely recommend CASS ALLEN as our preferred acoustic consultant, for all of our projects.’


SF - Taylor Wimpey South Thames

“I was very pleased with their technical knowledge and professional approach when dealing with a very awkward purchaser as well as the local authority.”


JH, Telford Homes

“Cass Allen went above and beyond to help with the Acoustic planning performance and conditions regarding the Greenwich Creekside project…”


LM, Capita plc

“Good comprehensive reports and advice at all design stages. Very flexible and professional, provided attendance at acoustic cladding tests at short notice.”


DF, Berkeley Homes

“Cass Allen have assisted us on a number of our projects. I’ve been impressed with their thorough and professional approach.”


MT, Lark Energy

James Hart - Principal Consultant, Building Acoustics
Direct Dial: 01234 834862 / Email

James specialises in building acoustics with particular expertise in structure-borne noise. He manages the pre-completion testing division of the firm and is a examiner for the ANC (Association of Noise Consultants). He graduated with a BSc in Audio Technology (1st Class) and also holds a post-graduate Diploma in Acoustics and Noise Control from the UK Institute of Acoustics (IOA).

James joined Cass Allen in 2007 and is the person to call for advice in architectural acoustics and building surveys for new-build or refurbished developments. Outside of work James enjoys the rush of the racing circuit, traction kiting and other accident-prone activities.

Get in touch

We hope you’ve enjoyed browsing our website but if you have any questions feel free to call us to talk through any acoustic issues you may be facing on your projects. The best person who can help with specific queries can be found here.