Long and Foster Realtors
Potomac/Cabin John Sales Office

Meet Our Team


Leslie Friedson
has worked in the industry for more than 15 years and is driven
by her passion for real estate, people and relationships.  She consistently ranks in
the top 1% of all Long & Foster agents.  Her expansive knowledge of the housing market
is complemented by expert negotiating strategies and extensive marketing skills.
Combining determination, a legendary work ethic, and most of all, unparalleled enthusiasm,
she is an indispensable asset to all of her clients.




Allyson Grossman works as the lead transaction manager of the Friedson Group.
Using her astute knowledge of the real estate process, she guides each deal through
from contract to settlement.  With a background in economics and past experience as
an author, she provides a unique perspective to the team.



 IMG_9785Tyler Siperko, named “2012 Rookie of the Year” for Long and Foster  brings high energy, attention to detail and a strong understanding of the contract to every real estate transaction. With his superior knowledge of the newest technology and the latest industry trends, he is especially adept at helping investors reach their real estate investment goals.  Whether working with buyers or sellers, customer service and client satisfaction are always Tyler’s top priorities.





Lois Chelec has been active in Maryland and DC real estate sales for more than 30 years.
A native Washingtonian who is enthusiastically and unreservedly involved in all aspects
of her home-town community, Lois possesses both superb technical skills and an
outstanding command of all the nuances and trends of the local real estate market.




Jessica Chuang, a native of Taiwan and a fluent speaker of Mandarin
Chinese, brings a wealth of market knowledge to buyers and sellers.
Industrious and organized, she devotes her energies to making sure
that her clients’ journey in the real estate process is as pleasant
and satisfying as possible.



julia gertler

Julia Gertler, a Maryland attorney, has been practicing real estate law for the
past 20 years.  She is also a licensed title producer and a real estate associate
broker and, as a result, brings a wealth of knowledge to both buyers and
sellers.  As a native of the Washington area with deep community roots, Julia
is very involved in local schools and non-profit organizations.  She enjoys fostering
relationships with her clients and guiding them through the real estate process
from start to finish.





Harriet Kline was born in Maryland and is now a dynamic member of her Potomac community She has been working in the real estate business since college graduation. With strong negotiating skills and utmost attention to every detail ofboth the buying and selling process, Harriet is well known for her diligent and meticulous representation of clients from start to finish.





Colleen Sandler brings matchless international perspective and extensive language
skills to all her transactions. Having emigrated from South Africa nearly 50 years ago,
she has been a licensed real estate agent for 10 years after a varied career in the arts and
business. Uniting unlimited availability with a unique personal ability to foster trust and
focus on each individual, she remains dedicated to securing the best possible real estate
deal for each client.




Kenny Maites is a native Washingtonian and seasoned Real Estate professional with over a decade of experience. He brings extensive knowledge of the Metropolitan area with proven success working with buyers, sellers, and commercial clients.





Gary Bortnick is a native Washingtonian who grew up in Chevy Chase and has been a lifelong Montgomery County resident. After a long and successful career in retail, he has turned his extensive negotiating and marketing skills – along with his business acumen, into providing the best service possible to his clients.



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