A provider of information technology services to businesses and hospitals wants to triple its office space in Hauppauge by purchasing a second building, executives said Thursday.

Flexible Business Systems Inc. hopes to buy and renovate 290 Motor Parkway for $5.7 million.

The 40,000-square-foot facility is currently used by the self-help organization Dale Carnegie Corp., which would continue to rent some space, the executives said.

The project was endorsed on Thursday by the Suffolk County Industrial Development Agency, which awarded Flexible Business $370,117 in tax breaks, including $284,955 off property taxes over 10 years, a 27.5 percent savings.

The company expects to add 15 jobs to its payroll of 118 by 2020. Records show employees earn, on average, $71,216 per year excluding medical insurance and retirement benefits.

Flexible Business would continue to use its current 20,000-square-foot office at 380 Oser Ave., but designate 290 Motor Parkway as its headquarters, said Joseph D. Saggio, the company’s co-founder.

“We did not expect to grow out of our current facility so quickly,” he said, noting the company moved into the Oser Avenue building less than three years ago. “We will double the size of our business.”

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IDA executive director Anthony J. Catapano said the agency helped Flexible Business buy the Oser Avenue building as well. Those tax breaks, valued at $214,083 over 10 years, will end in 2024, he said.

Flexible Business sells computers and provides managed IT services, including help desk, cloud applications, digital marketing, cybersecurity and employee training. Its customers include NYU Winthrop Hospital and Catholic Health Services of Long Island.

Saggio and partners Seth Belous and Martin Schmitt started Flexible Business in Saggio’s kitchen more than 30 years ago. The trio graduated from Stony Brook University, where they were members of the university’s ice hockey team.

Flexible Business’ workforce includes many Farmingdale State College and Stony Brook University graduates; between 40 and 50 graduates have been hired in the past three to four years.

IDA chairman Theresa Ward, who is also the county’s economic development commissioner, lauded the company’s commitment to hiring local college graduates. She said, “You are exactly the kind of company we want to help.”