About Us

Established in the 1940’s in the town of Littlehampton, West Sussex by William Tunmore, Tunmore Design and Build is a family run business now run by husband and wife, Terry and Debbie Tunmore. They have worked in the industry for over 40 years and a third generation is now part of the team.

Offering an extensive range of building services for domestic clients, we have many years experience working on properties from all periods and sizes. Our most recent projects have included a vast variety from renovations and extensions, to listed building works and new homes.

We can provide a full design service if required or will work from your own drawings and plans. Whatever the size of the project, we pride ourselves in a professional and efficient service, ensuring works run as smoothly as possible through to completion.

Have a project in mind?

Experience meets

to detail

We understand the finishing touches that make a house your home.

Traditional methods and craftsmanship are the foundations of our business, although we embrace new technology where appropriate.

Our diverse range of services can cater for most projects. Interior room alterations to whole property development and landscaping. Contact us today to discuss your plans.

Renovations, Extensions, Alterations and New Buildings


Traditional, contemporary or quirky,

We have created it all.

We have been around the block, and believe there is more to a project than just getting the job done. 

Built up over years, it is important to us that we maintain our good relationships with suppliers, authorities & customers.

Wherever possible we use local suppliers and products.


Local, Reliable & Trusted.



As technology evolves and demand increases for ever warmer homes by standard our projects include modern materials which offer fantastic properties which can aid a property's EPC. In bespoke situations there are opportunities to use materials which have less of environmental footprint.


Builds sympathetic to the environment are increasingly popular. This can include aesthetics, though often looks to incorporate modern technologies such as renewable heating, power and conscious lighting designs.


We monitor all waste from projects and handle it as responsibly as possible. All of our timber waste is recycled thanks to working with the Aldingbounre Trust, an enterprising local charity that supports adults with learning difficulties to live more independently.

We can help transform your space