Sotheby’s International Realty Affiliates LLC today announced that Barrett and Company Real Estate in Concord, Mass., is the newest member of its luxury real estate network and will operate as Barrett Sotheby’s International Realty effective May 15.

Laurie Cadigan is broker and owner, and the firm’s main office is located at 33 Walden Street, in Concord. There are two additional offices in Lincoln and Carlisle.

“With over 35 years of proven success as local market leaders, Laurie and her team have high levels of experience and community knowledge,” said Philip White, president and chief executive officer, Sotheby’s International Realty Affiliates LLC. “Their commitment to client service and support is unparalleled, as is their focus on providing guidance with a consultative approach.”

According to Cadigan, her team prides itself on their in-depth market and community knowledge. “The availability of our onsite owner, marketing department, social media team and relocation director are unique in our market area,” she said. “Our custom marketing plans, programs and collateral for each property help bring our seller clients maximum exposure and results for their real estate goals. We are proud to represent the Boston suburban towns with some of the finest school systems and highest property values, and look forward to the added exposure and support this brand will bring. With its global reach, the Sotheby’s International Realty brand will help us connect with consumers from all over the world.”

The Sotheby’s International Realty® network currently has more than 13,000 sales associates located in approximately 660 offices in 49 countries and territories worldwide. Barrett Sotheby’s International Realty listings will be marketed on the sothebysrealty.com global website. In addition to the referral opportunities and widened exposure generated from this source, the firm’s brokers and clients will benefit from an association with the Sotheby’s auction house and worldwide Sotheby’s International Realty marketing programs. Each office is independently owned and operated.

Sotheby’s International Realty Affiliates LLC announced that The Mathieu Group in Westborough, Mass., is the newest member of its luxury real estate network and will now operate as Mathieu Newton Sotheby’s International Realty.

Mike Mathieu is broker and owner, and the firm’s office is located at 25 West Main Street in Westborough.

“With 40 years’ experience and market knowledge, the Mathieu Newton Group is committed to developing solid relationships with associates, customers, clients and the community,” said Philip White, president and chief executive officer, Sotheby’s International Realty Affiliates LLC. “We are proud to welcome Mike Mathieu and his group of professionals to our network and look forward to their continued growth and success.”

The firm joins the Sotheby’s International Realty brand’s 26 offices located throughout Massachusetts to enhance its presence in the state. The Sotheby’s International Realty luxury network has 12,800 sales associates located in approximately 660 offices in 47 countries and territories worldwide.

According to Mathieu, Westborough is attractive to potential buyers thanks to its central location, and the affiliation will enable his firm to provide its clients with global exposure for their homes. “Located at the crossroads of three major routes, Westborough is a desirable place to live for commuters traveling to Boston, Worcester, Providence or northern New England and is a prime location for industry and business.” he said. “With its numerous restaurants and retail stores, it offers the amenities of city living while maintaining its small town charm of rolling farmlands and historic homes. We offer our clients experience in all aspects of real estate, helping them make informed decisions and see their desired result.”

Mathieu Newton Sotheby’s International Realty listings will be marketed on the Sotheby’s International Realty global website. In addition to the referral opportunities and widened exposure generated from this source, the firm’s brokers and clients will benefit from an association with the Sotheby’s auction house and worldwide Sotheby’s International Realty marketing programs. Each office is independently owned and operated.