About Us

Previously known as “Mansfield Builders”, the fully Australian owned company Mansfield Design & Construction has been in business for nearly 40 years and has become known as one of Australia’s best building companies.

Ralph Mansfield (Managing Director & Master Builder) has literally built his company’s reputation on innovation, a style in design that has a distinct flair, the “no bull” upfront and honest attitude with all clients, the customised design each and every time, and of course management of the entire development from permits to the finished construction -Mansfield gets the job done!

Specialising in holiday houses and residential development across the Mornington Peninsula, Mansfield Design & Construction are proud of their range of building projects across Portsea, Sorrento, Rye, Blairgowrie, Safety Beach, Mt Martha, Mt Eliza and Mornington.

Mansfield Design and Construction is a proud company, proud of their constructions and especially proud of the extremely efficient administration and project management that makes it all possible. On time and on budget.


Mansfield Design & Construction is proud to be certified by and registered with the Master Builders Association of Victoria and the Building Commission of Victoria.


License Number: DBU12604 (unlimited)  /  CBL 193 (limited)


As a part of the most prestigious building associates of Victoria and Australia you know we build to the highest standard in the country. MDC has risen above the expectations of the registered associations and builds to an unprecedented standard of quality and service.