More than a contractor, we are your project partner...

In the last twenty years, we have built a reputation for delivering excellence in everything we do, from those all-important first consultations, to delivering on time, and on budget.

Working in the Essex and Suffolk counties, we have gained expertise in working with historic buildings and are aware of the extra care and specialist materials that are needed when restoring listed or period properties. We have worked closely with bodies including English Heritage and have a good understanding of the legislation involved in restoring and repairing listed buildings.

If you are extending your property or designing a new build, we can work these time-honoured skills into creating brand new timber-framed and heritage style homes that have a traditional look and feel with every modern innovation built in.

Most often, our customers simply want more space, either to cater for a growing family or to create bespoke facilities such as disabled modifications. From our first discussions, we aim to design and create the perfect space for you and our customers are usually surprised at how well their new extension, conservatory or loft conversion works in to their existing property.

Our collaborative approach ensures we communicate with you throughout the project and are careful to minimise disruption. A tidy site, polite, punctual workforce and keeping your home accessible, usable and safe throughout are just part of the service when you work with us.

Most of all, we’re proud to be able to say that most of our work comes through recommendation. We look forward to working with you.

If you would like to discuss a project, no matter how big or small, or get some professional advice, please call us on 01206 396667 or send us an email to enquiries@jdoconnell.co.uk for a FREE, no-obligation discussion.

Exclusive design

If you are extending your property or designing a new build.

Fixed Prices

All our work is fully insured and guaranteed and we never rely on estimates.

Professional Team

We are proud of our amicable, professional and always developing team!


Angela & Sergi

Fantastic Attention to Detail in Both Planning and Implementation We would like to thank John and the team for transforming our property over the last few months. John O’Connell has provided us with a beautiful office space in our garden, which has allowed us to combine our work and family life and gain back our third bedroom whilst expanding our business. In addition to the garden office, the team have provided us with a large outdoor recreational space in the form of a patio area…

Professional and Caring Approach

The friendly, and at times jokey demeanour of its principal belies the professional and caring approach of this company, with an overarching concern to maintain high standards of workmanship that were given to the work. Our project, which involved a wide variety of trades, was completed smoothly, without drama or undue delay despite unforeseen setbacks. We lost one day of use of our main facility through no fault of the company (It was British Gas’ fault!). What was important was that most requests for changes…

Competitive, Courteous and Professional

John O’Connell Building Services were recommended to us via our neighbours and we were certainly not disappointed. They provided an excellent, competitive, courteous, professional service throughout the build of our Granny Annexe. On the odd occasion, and it was only the odd occasion that concerns or issues arose, John and his team dealt with these immediately without question or hesitation and even worked with us on a number of changes that we implemented whilst the building was progressing. As a result of the high quality…