Edward Coates, a member of the English gentry, arrived in New Zealand in 1866 later obtaining of land and began importing sheep and cattle breeds, including the first
Shropshire sheep and
Hereford cattle, and transforming the grounds into orchards and fields. Ruatuna was built in advance of Edward Coates' marriage. Samuel Cooksey, a local builder, was contracted to construct it and construction began and finished in 1877. In 1893 the homestead was extended to provide a room for
Gordon Coates and a schoolroom for his sister. In 1900 Gordon was helping run the farm along with his brother, he continued to run the farm until 1905 when he was elected to the
Otamatea County Council. By the early 1900s the Coates had the largest flock of Shropshires in the country. as an endowment for the site. Restoration was undertaken at the homestead around 2011. ==References==