Mr Anthony Koh, who has a talent for fixing things, has been wielding tools since he was 10 years old.

The chief executive officer and executive director of ISOTeam, a building maintenance and estate upgrading specialist, loves his work - and it shows.

"I followed my father to work on his chicken farm (in the Pontian district in Johor, Malaysia) and we built a lot of things ourselves," said Mr Koh, now 49.

His trophies from his younger days included birdcages, cabinets, treehouses and even a car garage - all built by hand.

"Even now, I like to build or repair most things at home myself," he said in an interview with The Straits Times.

It comes as no surprise then that his passion for fixing things was instrumental in setting up ISOTeam with two partners in 1998. The group, which started out as a painting company, expanded its capabilities via an acquisition spree totalling $11 million in October last year.

It bought four complementary businesses, and now offers services in other aspects of maintenance and upgrading, such as landscaping, new-build painting, specialist painting as well as access provision.

Nippon Paint (Singapore) also doubled its stake in ISOTeam last December to 5.93 per cent in a $1.4 million share placement exercise.

To date, ISOTeam, which listed on the Catalist board in July 2013, has repainted and refurbished more than 230 projects for close to 2,500 Housing Board blocks, and has completed more than 15 neighbourhood upgrading projects worth about $100 million.

For the half year ending Dec 31, the company's net profit jumped 92 per cent to $4.1 million, while revenue increased 22.1 per cent to $39 million.

"We started out as a painting company but, after a while, our clients started asking us to do other things for them," said Mr Koh.

"We didn't have the skills, but they liked the way we managed our projects."

Block-painting jobs in HDB estates today, for instance, no longer culminate in quarrels between residents and painters over stained laundry, thanks to an idea that was the brainchild of Mr Koh and his partners.

"We always had to shout, 'Auntie, siu sa!' (Hokkien for 'put away your clothes') at the blocks of flats, even though we'd already put up notices about the painting schedule," recalled Mr Koh.

"But some residents would still leave their clothes out on the laundry poles, which could become dirty in the process of painting. And then, there would be a lot of arguments.

"So we decided to help them keep their clothing - fold it nicely into a plastic bag and leave a note telling them to collect it from us."

This solution, he said, worked so well that his competitors are jumping on the bandwagon and doing the same.

Mr Koh's thirst for fresh and good ideas has also led to the company's eco-conscious undertakings.

ISOTeam offers an array of "green" products: From insulating plaster that helps to reduce the indoor temperature in buildings, to more durable anti-slip coatings usually used at lift landings.

"There is still very little awareness in going green when it comes to maintenance efforts, and few know that it can also come with a lot of cost savings," said Mr Koh.

"We want to have the first- mover advantage in this field, and I also hope the idea of not having any wastage will become part of the staff DNA."

He has his sights set on rolling out an online handyman service portal next.

He noted that people often have no idea who to call for help when things go wrong, be it a leaking air-conditioner or a choked toilet bowl.

"And when the handyman arrives and asks for $500 in payment, customers comply because something needs to be fixed urgently, even if the repairman is not reliable or if the payment is not justifiable."

Such issues could be dealt with once ISOTeam's online portal goes live in July or August this year, as customers will be able to access a one-stop service and call centre.

For example, they will get to choose the brand of toilet bowl they want to replace a damaged one, and they will know how much they need to pay for a job done, said Mr Koh.

"There's going to be demand from almost everyone, including you and me."

Rising through the ranks in his 25 years in the industry has done little to temper Mr Koh's enthusiasm for what he does.

"I still feel a sense of satisfaction whenever I see an old building being transformed with a fresh and new facade. It's just like putting make-up on an old woman to make her young again."