The company, which became employee-owned in 2022, also saw its workforce grow to an all-time high of 180 staff members in its 21st year of business.

For the financial year ending September 2024, newly-filed accounts show sales increased to £29.9 million from £26.6m in the previous year. Pre-tax profits saw a significant rise to £2.4m, up from £1.7m in 2023.

The firm has been a key contractor in high-profile developments across Tayside and Fife, including the new Perth High School, the James Hutton Institute in Invergowrie, and Blairgowrie Recreation Centre.

A significant area of growth has been in the energy-efficient Passivhaus sector. Finance director Julie Scobie highlighted the Dunfermline Learning Campus, hailed as the world’s largest Passivhaus educational centre, as a prestigious contract.

“On the back of this and our previous work with Robertson Construction delivering the North Muirton Primary School in Perth, we have established a reputation as Scotland’s leading company in the energy efficient Passivhaus sector.” she said. This expertise has led to securing further groundworks contracts for Passivhaus projects, such as the new Clackmannanshire Council wellbeing hub.

Looking ahead, Kilmac is focused on strategic expansion into the Central Belt, having opened offices in Dunfermline and Livingston to service projects around Glasgow and Edinburgh.

“That has broadened our horizons and we have taken on additional staff to deliver contracts coming in from further afield,” said bid director James Wilson. “This ensures we can continue our plan for growth while becoming less reliant on one operational area.”