Plans for a $15 million expansion of Yarmouth’s Tyler Technologies will face final approval by town planning officials on December 9.

The expansion – a four-story, 94,000 square foot addition to its building on Route 1 – would allow the Texas-based software company to add about 500 employees over the next decade, company officials have said. The parking lot would also be expanded from the existing 343 spots to 522 spots.

The Yarmouth office, on the Cumberland town line, is a three-story, 87,000-square-foot office building built by Cole Haan in 1992. Tyler Technologies acquired the property in 2008.

The proposal is “a pinnacle project” for the town, according to members of Yarmouth’s new Economic Development Advisory Board.

“New jobs and new businesses translate to a stronger economy, and contribute to a residential and housing boost in southern Maine,” read a Nov. 24 letter from board chairman Peter Haynes and vice chairwoman Deborah Wathen-Finn. The letter expressed “wholehearted support” for the proposed expansion.

Tyler Technologies currently employs about 525 people at its offices in Falmouth and Yarmouth. It is Yarmouth’s largest employer, and the third largest taxpayer with property valued at more than $13 million, town officials said.

The company currently pays about $282,000 a year in taxes, and the expansion will add $3 million to $4 million in new property tax revenue over the next 10 years, according to Denise Clavette, the town’s economic development director.

Tyler altered its initial expansion plans after about 10 neighbors raised concerns about the size and proximity of the parking lot to their properties and the need to remove trees as part of a drainage plan. Tyler changed its drainage plans, saving about 25 trees, and reduced the size of the parking area, Clavette said.

Tyler officials said in their application that, even if the final plans are approved, they expect to expand again in the future for an additional 10,800 square feet of office space and an additional parking lot for 146 spaces.

Tyler Technologies develops software for municipalities and other government agencies, specializing in Enterprise Resource Planning – a suite of business management software with integrated applications. For instance, it develops software to run dispatch systems, mobile communications and record management for public safety agencies, and personnel and financial functions for school departments.

The ERP division is headquartered in Yarmouth, as are several top executives, including CEO John Marr Jr. The company employs 3,500 people across the country.

Noel K. Gallagher can be reached at 791-6387 or at:

[email protected]

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