413-528-2040 Great Barrington
413-443-4416 Pittsfield
Our Story & Our Staff

Established in 1948 by Isodore Goodman, Isgood Realty has long been an innovative, leading Real Estate brokerage firm in the Berkshires.  Many of the marketing tools common throughout the county today started here.  Isgood Realty was the first company to have multiple offices for client convenience, first to create a “book of homes,” and first to host Open Houses.  For over 70 years of ever-changing markets, Isgood has stayed ahead of the curve and prospered.  Why?  Customer service.  Integrity.  Experience. Knowledge.  The list goes on.

Isodore Goodman’s protégé, Richard “Dick” Krzynowek, has been with Isgood Realty since 1973 and was president of the firm and is retired.  Now Managing Broker Eric Steuernagle energetically oversees the daily operations and is always available to trek across the hills of Berkshire County with his clients.  “You’ve got to get out there to know what’s out there,” he says. You’ll find his enthusiasm matched only by his knowledge and integrity.

The Real Estate professionals at Isgood Realty have a detailed understanding of the Berkshires, including market conditions, land and property regulations, banks, financing, good schools, neighborhoods and local government. This knowledge is critical to smooth, successful home and property transactions.

If you want an agent who looks out for your interests – and is ready to serve as your personal guide through this exciting process – look to Isgood Realty.  You can also read some customer testimonials by clicking here. We look forward to hearing from you!

Meet Our Team
Eric Steuernagle
Managing Broker
If you could look up Eric Steuernagle in the dictionary you would find definitions like "Integrity," "Energetic," "Considerate" and "Hard-working." A resident of Great Barrington for over 18 years, Eric has gained expertise in numerous aspects of the building and housing industry—including home builder, seller and buyer representative, investor representative and banking. He has considerable experience in both residential and commercial markets. Eric is very family-oriented and especially enjoys spending time with his three daughters and lovely wife.

Eric continually goes the extra mile to build strong relationships with clients, local lenders and attorneys — and he remains focused on providing exceptional service. His knowledge and foresight have earned him a reputation as helpful, detail-oriented and a pleasure to work with in all interactions. He leads, guides and motivates his team to communicate with you clearly, promptly and honorably. From inspecting and maintaining properties to clear, concise communications from the first phone call to closing, you'll find it a pleasure to work with Eric Steuernagle.
Marji Keefner-West
Associate Broker
Marji Keefner-West was born in Great Barrington and is a true native. She has spent her life here in the Berkshires close to family, raising her two children, and honing her skills in relationships, business, and finance. Marji joined the Isgood family in 1994, and treats her clients as neighbors and friends, going above and beyond the role of realtor. Prior to her career in real estate, Marji has been a supervisor, bookkeeper, customer service representative, and local bank manager. There is not an element of the industry or a corner of South County that she doesn't know like the back of her hand. When she is not writing a contract to sell your home or listening to what you are looking for, she is talking about her four grandchildren and one great grandchild. Marji's warmth, honesty, and wealth of experience is one of a kind.
Charlie Mendes
Accredited Buyer's Representative (ABR), Sales Associate
Charlie Mendes has been a real estate sales agent since March of 2013.  He is a graduate of Bridgewater State College (B.S., 1982) and Penn State University (M.S., 1993).  For over 30 years Charlie worked in Human Services with several organizations, including 28 years as a clinician in the Department of Behavioral Sciences at Berkshire Medical Center in Pittsfield.  The skills he acquired through many years of working with people translated well to his new career in real estate sales.  Charlie’s early success as a buyer’s agent resulted in his obtaining a nationally recognized accreditation in 2015 as a buyer’s representative (ABR).  He is a member of the Berkshire Board of Realtors, the Massachusetts Associations of Realtors, the National Association of Realtors and the Real Estate Buyer’s Agent Council.  Charlie has enjoyed his venture into a new career and continues to work diligently on behalf of buyers and sellers in all aspects of real estate services.
Tanya Mazurenko
Sales Associate
Tanya Mazurenko has lived in the Berkshires for over 23 years with her family and friends.  For the past 13 years, she has enjoyed sharing the beauty of the Berkshires with people while finding them a new ​home​.  She also enjoys playing ​the flute with friends in the chamber orchestra in the Pittsfield ​Community ​Music School.  Tanya specializes in assisting buyers and sellers in the Central Berkshire area.
Brant Keller
Sales Associate
Brant Keller was born in Lenox, Mass.  As a native of the Berkshires, he had his first cup of coffee with the nuns at Bellefontaine which is now Canyon Ranch, worked at Ventfort Hall when it was a girl's ballet camp, went to school at Lenox School for Boys which is now Shakespeare & Company and presently resides in the former home of one of Norman Rockwell's sons.  He can provide fun information on where to fish, hike, eat or play and show why the Berkshires is a special place enticing creative people like Edith Wharton, Herman Melville, Nathaniel Hawthorne, Norman Rockwell, Dan Klein, Meryl Streep and so many more.  Brant has utilized his extensive knowledge of the area and 26 years of experience in real estate to make buying or selling a home an enjoyable experience.
David Carlson
Sales Associate
David settled in the Berkshires with his family in 1982 and is a graduate of Monument Mountain Regional High School. After attending college out of the area, the attraction of the Berkshires called him home. With a career spanning over 20 years in human services, David is finding that working with buyers and sellers is a natural extension of the experience he already possesses. After working for the last year and a half in the local real estate market, David is looking forward to a bright future at Isgood Realty. He lives with his wife Stephanie and twelve year old son Khalil in Housatonic.
Kenzie Fields
Sales Associate
Kenzie Fields has lived in five countries and in both hemispheres, but hadn’t found the depth and vitality her family was looking for in a hometown until arriving in the Berkshires from Brooklyn in 2010. Her interest in personal relationships has been the theme of her professional life, and she is enthusiastic to bring her creative skills together with her love of community. She is the chairperson of the Great Barrington Fresh Air Fund volunteer committee, a former school committee member of the Southern Berkshire Regional School District, and a photographer.
Sonya Mackintosh Seward
Sales Associate
Sonya Mackintosh Seward grew up in an entrepreneurial family of hotel, restaurant, and bookshop owners in London, UK. At an early age she learned firsthand how dedication and tenacity were key to business success. After completing a degree in fine arts at The Rhode Island School of Design and an architectural fundamentals program in France, Sonya blended her artistic spirit, analytical thinking, and  business savvy in 1997 to found smARTWORKS, Inc., her contemporary knit design studio in Great Barrington. Cultivating a considerable client list through her ability to understand market trends and her customers needs, Sonya's gift at sales were honed.

Her transition to the real estate business has been a natural one. After spending 25 years managing properties in Western Massachusetts and Upstate New York, she finally built her dream home and horse barn with her husband, Steve, in Sheffield. That experience sparked a passion to help others find the property of their dreams and the smart investment for their futures in her beloved Berkshires.
Richard Kuzia
Sales Associate
Richard Kuzia has held a Broker's License since 1973, and when Isgood Realty opened their first office in Great Barrington, he was the first salesman hired.  Since moving to Great Barrington himself, he has renovated and resold 2 houses on "The Hill" and built 4 more houses in the same neighborhood.  He developed "Fern Hill", one of the finest subdivisions in town.  He recently retired as Chairman of the Math Department at Mount Everett High School.  Dick has been with Isgood Realty for over 43 years and is one of the most experienced realtors in the area.
© 2015-2018 Isgood Realty
 80 Maple Avenue, Suite 7, Great Barrington, MA 01230
413-528-2040 Great Barrington       413-443-4416 Pittsfield
Visit Us on Facebook       Testimonials       Contact