“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


Join our team and kick-start your career in acoustics  

What to expect?

From day one you will be an Acoustics Consultant and will be on site taking measurements, carrying out technical assessments and assisting clients. You will work in a friendly team and be mentored by one of our Senior Consultants who will nurture your development and ensure you quickly learn the necessary skills. As you become more confident you will be taking the lead and running interesting and challenging projects. On every step of the way we will support your development.

Within 3-5 years we would expect you to become a Senior Acoustics Consultant, significantly contributing to the success of the company. You will be representing the team at high level meetings, developing acoustic design work and providing specialist advice.

As you become more senior you will draw on your increasing experience to develop your own clients, provide mentoring to junior colleagues and help steer the company through whatever ventures await.

At Cass Allen we are a sociable team of professionals with a shared interest in acoustics and sound. For details of current vacancies click hereCome and join us!

About us

We are a successful, well-established acoustics consultancy handling high quality work for a wide-ranging client base. We have grown steadily over the last 10 years and are committed to continued growth over the next decade.

We offer an attractive remuneration package including a quarterly bonus scheme, private medical insurance, life assurance and 25 days holiday.

Alex Clark, Acoustics Consultant, started with Cass Allen in 2017            

“I started working at Cass Allen after having graduated from Southampton University (ISVR) with a degree in acoustical engineering. Over the last year and a half I have thoroughly enjoyed working on a vast array of projects in many different areas.

Unlike many Junior Consultants working at other companies, I have been encouraged to work on all aspects of the job from writing fee proposals, carrying out site surveys, writing reports and talking to clients on the phone, to attending meetings with large developers and architects.

My work has included travelling all around the country to measure various types of noise (which often requires enjoyable investigations into understanding the nature of the noise source), and sound testing expensive flats in central London.

Due to the large, friendly team at Cass Allen, I have quickly learned how to liaise with councils and write politically sensitive reports, and have vastly increased my knowledge of both environmental and building acoustics.

The lively environment at Cass Allen has been the perfect place for me to transition into the professional world, and has set me up well for a long and rewarding career in the industry.”

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.