Morgan said that the growth in these sectors would offset a decrease of orders in the commercial market – although he denied that there had been any such slowdown.
He said: "We are not finding any downturn. Order books are bigger than last year."
Morgan made his comments as the group's interim turnover increased 41% to £407.3m. Pre-tax profit also surged, jumping 75% to £10.1m for the six months to 30 June.
Morgan said the group's fit-out arm, which had a turnover of £113m for the period, had expanded its field of operations to include maintenance, and would work beyond London.