Pre-tax profits rose 38.4% to £3.46m for the six months to June 30 2019 as turnover ticked-up 14% to £183.9m.
Water work was again the biggest profit contributor as nmcn secured places on a series of AMP 7 frameworks.
Chief Executive John Homer said: “These results demonstrate the continued progress made in the business against our strategic objectives. Our focus on profit improvement and cash generation continues to show returns.
“We continue to invest significantly in the development of our people and the evolution of our employer brand.
“It is our firm belief that our people are the overarching differentiator in the service that we provide and the primary driver for our continued success.
“The outlook for future trading remains positive and provides the opportunity to maximise earnings from our operations.
“We are confident that the Board’s expectations will be achieved, with net margins slightly exceeding 2%.”
The company was formerly known as North Midland Construction before its rebranding.
Homer said: “Outside of the financial performance, the first half of 2019 has also seen us further embed the new united nmcn brand across the business and with our external stakeholders.”