Barrett Sotheby's International Realty
Karen Adelson, Barrett Sotheby's International RealtyPhone: (617) 901-7080
Email: [email protected]
Karen Adelson

Karen Adelson

Associate Broker | Realtor® | CBR®


Karen Adelson has been a real estate agent for over 25 years. She specializes in the markets of the western suburbs. Karen represents both buyer and seller clients, and brings her enthusiasm for the area to her work.

Her passion within real estate is educating people, which she feels aids in reducing the stress of the home-buying process. She invests as much time as her clients need in order to feel happy and comfortable with their ultimate choice. Her time has not only developed into long-lasting partnerships, but friendships, with clients. 

Similarly, she invests her time with sellers, making them feel comfortable with the services she provides to market their properties. She feels the home-selling process takes a team and has developed relationships with trusted stagers, photographers, graphic artists, builders, painters and even professional home declutters. Karen has consistently been a very successful broker in her transactions with both buyers and sellers. 

Certified Buyer Representative (CBR®)
Associate Broker

BA, Education, Boston University
Studied Commercial Real Estate at Harvard University School of Architecture
Studied Painting at the Museum of Fine Arts Museum School
Studied at deCordova Museum School

What Clients Are Saying

We would strongly recommend Karen and had a great overall experience. We have sold a few other homes and have generally

been disappointed with the other realtors we worked with. She was recommended to us by a local builder friend of our’s that

worked with her for years and always had a good experience.


In the fall of 2010, overall a weak real estate market, she used direct mail, newspaper, internet and open houses to get our

home under agreement in 10 days after it was listed above the asking price and for more than we had bought the home in late

2005 (obviously a much stronger market).


She was honest, not pushy, provided sound advice but listened to our needs and was an absolute pleasure to work with. I would

work with her again without hesitation.


I am more than happy to share my working experience with Karen Adelson.

My wife and I moved to Lexington around 5 years ago from Asia and have already worked with Karen on both sides

(as a buyers and sellers agent). I run a family real estate business that spans through Singapore, India, Thailand and

Boston and my work keeps me away from Lexington/USA very often. She is the only agent through my 5 years of

living in Massachusetts I can trust and rely on as I travel.

An example of a recent representation is a property she listed for for me for sale at 456 Concord Ave in Lexington,

where Karen helped broker the sale while I was away on a business trip in Asia. She accommodated the crazy time

differences and in my absence was present at every sellers open house and viewing, home inspection, negotiation,

etc. As a respected veteran in the Real Estate brokerage industry, Karen has tremendous contacts (who have great

respect and affection for her) in the contracting, home inspection, financing, appraisal, engineering area of whom I

have personally met and hired.

Karen's key strength is her knowledge of the location she works in. She understands where the market is trending

at anytime with respect to pricing on the buyer and seller side (which is key in negotiating the right price as a seller

and/or buyers agent). She is also an agent that puts honesty and trust (which is very rare in the real estate brokerage

industry) above everything else and I always tell her that is the main reason she has survived and excelled for over

20 years as a real estate broker.

As for Karen’s weakness, she goes above and beyond for every client (which is wonderful), however, due to that I

have seen some of her clients take advantage of her unconditional service and support.

In summary, I have never hesitated to work with Karen and she is the first and only person I hire to represent me

for my real estate brokerage needs and advice in the area. The fact that she has been my only representative (buyer

and sellers agent) over the years in Lexington is a testament to how much I trust her judgement and advice, and

above all respect her as an individual.


Thanks for taking care of my kids, I know you did a first class job for them. They say you were and are

the best! That’s why you were the one and only real estate agent we considered!”


Karen I can’t thank you enough. What could have been a long and painful process is the sale of my family’s

condo, was mad quick and painless by your efforts. All bases were covered by you, and all issues were handled and

eliminated by you before I knew they existed. You exemplify the "GOLD LEVEL” of customer service in real estate



Karen sold my last two homes and I have happily recommended her to family and friends- with stellar results! She is

an ace in negotiations, is an expert in the process of buying or selling a home, and is a joy to work with. She is also

the person you want to have in your corner while navigating the often stressful & confusing process of buying or

selling a home. With her can-do attitude, and extensive local connections, she gets things done. For example, she

got an electrician out to our house late the night before our closing when a faulty light in our basement promised to

undo our plans to sell our house the next morning. Call Karen... problem solved. With her diplomatic approach,

outgoing personality and expertise, I cannot recommend her highly enough and am planning on using her services

next time I purchase real estate!

Watertown, Massachusetts

I can not say enough about Karen Adelson except, if you are looking to buy or sell a home, USE HER!!!!

My husband and I sold our home in Metrowest very quickly and needed to find a new home before the rapidly

approaching birth or our first child. I can not say enough about how amazing, professional, understanding and

knowledgeable Karen Adelson was through this entire process. She was available anytime day or night to answer

our questions or show us properties and was our greatest advocate. She could not have done a better job

negotiating on our behalf and got us a great deal.

We ended up purchasing a lovely home that abuts to a commercial property and Karen even took it upon herself to to

educate us on the town by-laws and where to find information about specific zoning/variance for a privacy fence

above 6 feet. She is a wealth of information and her endless professional contacts (painters, carpenters, electricians,

plumbers etc...) makes her one of Lexington's hidden gems!

East Lexington, Massachusetts

Karen knows Lexington inside and out. She works very hard and was always available and on the lookout for us. She

ultimately helped us to buy a great home after many months of looking. She is exceptionally experienced and

knowledgeable; and she managed a purchase that was fraught with challenges exceptionally smoothly. Karen is a

real pro, and you'll have a friend for life in her.

Bob, Lexington, Massachusetts

Karen's great. Honest, points out flaws and issues but also provide a no-nonsense opinion on the good points of

properties. I found her trustworthy, responsive far-- as in years-- past the sale, and generally a good person, which in

my book counts for a lot. I'd work with her again, either to buy or to sell a property.

Lexington, Massachusetts

As a young home buyer, I was very VERY nervous in my search to find the right home, at the right price. I was

referred to Karen by a client who highly recommended her. My experience with Karen was nothing short of truly

outstanding! I learned the importance of home ownership at a very young age and have worked very hard to be able

to attain the American dream of home ownership. Karen was professional, respectful, friendly and made the entire

process just so so smooth. I felt like she truly cared about me and helped me make the right decision. She knew

exactly what I was looking for and she stopped at nothing to ensure my happiness. She feels like family now. I am so

appreciative to have had such a great experience making the biggest purchase of my life and I would HIGHLY

recommend Karen to anyone looking to purchase a home!

Watertown, Massachusetts

I recommend Karen wholeheartedly. Not only is she an exceptionally warm, vibrant and outgoing person but she’s also

a savvy realtor who knows the business, knows how to get the best deal for her clients and knows how to get things


Karen has listed two of my previous properties and also served as my realtor while helping me to secure each of

these homes in multiple offer situations.

The home Karen listed for me last year (59 WindsorAvenue, Watertown) went under agreement with a full priced

offer in one day while others in my neighborhood languished for months. Most finally sold for well below asking


I firmly believe that the success I had with my property was due to the groundwork laid by Karen as she prepared

my home for sale and to her aggressive marketing approach. My house was priced perfectly thanks to Karen’s

knowledge of the area. It looked amazing thanks to a home "stager” that Karen brought in to improve the layout

and decor. Home repairs that had been nagging at me were quickly fixed before listing thanks to phone calls made

to Karen’s connections in the construction, electrical and plumbing trades.

A very large crowd of people braved a cold and rainy Sunday afternoon to attend my first open house. They were

attracted mainly by a web page Karen created for my property with photos that made my house shine. They were

directed to that website by brochures she created, calls she made to other realtors alerting them to the new listing,

and by the web address that was listed prominently on the "for sale” sign in front of the house.

One of Karen’s greatest attributes is that she excels at diplomacy. At every stage, she ironed out wrinkles and moved

the sale forward, always to my benefit. She made sure that the buyer’s home inspection went off as planned even

when their realtor decided not to show up. She opened a line of communication between the buyers and herself

that proved invaluable during the P&S and was always the coolest head in any negotiation.

I’d owned property before meeting Karen and had worked with other realtors. But after working with Karen I

would never consider calling anyone else. She’s a valuable asset to have when either buying or selling. In my

opinion, she’s simply the best there is.