Constructive Design is a design and building firm with many years of experience in domestic extensions, loft conversions and barn conversions.

Covering Buckinghamshire and Oxfordshire, we specialise in intelligent structural design solutions, to ensure a high quality build at a cost effective price.

We can take your ideas from start to finish, through from design drawings, to Planning approval, to Building Control approval and the completed building.

With exemplary project management and pride in our high levels of workmanship, we aim to guide you through every step of the project resulting in the desired end product.

Get in touch for a quote

Contact Us

Recent Projects


Glazed link and double garage conversion

Long Crendon

Two storey side extension and single story rear extension


Manor house refurbishment and single story kitchen extension