AT Developments will create a tailored architectural design to suit your desires and needs, whether it be new build or an extension. We are a small architectural design consultancy in Cornwall offering you a bespoke service to survey and design both residential and commercial property.AT Developments offers a FREE consultation to all our prospective clients. Our philosophy is to listen to our clients and provide them with a cost effective solution which does not compromise design values.AT Developments has over 10 years experience in architecture and design, working with both residential and commercial projects. We have also worked alongside larger companies to assist with major developments. In the last couple of years we have developed a niche market in bridging the gap between cost and quality.