[1] Dillwyn married Susan Weston, who inherited nearby High Hill from her father Lewis Weston.
The two estates were combined, and High Hill was demolished with Higham Lodge being retained as the family home.
The house was built by Anthony Bacon and designed by William Newton in 1768.
[2] In 1793–4 John Harman commissioned Humphry Repton to improve the property.
His company Baird & Tatlock (London), occupied the building making scientific apparatus, laboratory benches, and fume cupboards.