Sinjin McNicholl - real estate agent at Coldwell Banker Mountain Properties

Sinjin McNicholl

Broker Associate

Breckenridge, CO

Breckenridge Colorado luxury real estate

About Sinjin

I believe strong and trusting relationships are essential to personal and professional success.  My top priority is to ensure my clients receive the highest level of customer service through communication and follow through.

One of my strengths as a Real Estate professional is my ability to connect and communicate with the people I meet.  My educational background in Communication and Sociology from Wittenberg University has proved an invaluable resource for my interactions with clients and industry partners.

Before moving to Breckenridge, I worked as an Account Executive in a fast-paced advertising agency in Chicago.  I began working at Coldwell Banker Mountain Properties as an office administrator and was quickly promoted to office manager. My motivation, focus, and administrative experience led me to become a top-performing licensed Real Estate Broker in Summit County.

I love everything that Summit County has to offer as a place to live, play, and thrive.  I want to share my enthusiasm and passion for the mountain lifestyle by being your local and personal Real Estate advisor.

Credentials & Memberships

  • RSPS Certified (Resort and Second Property Specialist)
  • Certified Negotiation Expert
  • Coldwell Banker Global Luxury

Community Involvement

  • Volunteer with the Breckenridge Outdoor Education Center.
  • Volunteer with Breckenridge Film Festival


Sinjin, assisted me in Selling my home in Breckenridge. Prior to actually listing it, we came up with a good sale number to get people in the door as it is a uniquely designed house. We also devised a plan to let all offers come in over the weekend instead of responding right away. This was perfect, we got what we were looking for and the process was easy. She kept me in the loop on all things, as well as gave me a little space when she needed a question answered. There was no frantic approach to selling it. It certainly did not seem like she had her commission in mind but my thoughts and how I was feeling about the whole process as we went along. very professional and fun to work with. I would certainly work with Sinjin again and recommend her.


Sinjin recently helped my husband and I sell our 1 bedroom condo in Keystone, then a few months later buy a 2 bedroom townhouse in the same area. Of all the real estate agents we’ve worked with over the years, Sinjin was by far the best. She was extremely knowledgable, accommodating to our schedule considering we live in Denver and were buying remotely and in truly every way went above and beyond to help us make an informed decisions. In addition to being the consummate professional, we just really enjoyed spending time with her. I highly recommend Sinjin and we look forward to calling her again in the future.


Sinjin made my home buying experience fun and enjoyable because she was never pushy and I always heard and addressed my concerns. I wasn’t sure I could even buy my own place and she always kept my confidence up and reassured me. She was so quick to respond to any property I was interested in and always got back to me immediately! I highly recommend her to be your realtor! She is terrific!


Sinjin was amazing. As a first time home buyer the entire process was new to me.
Sinjin was there every step of the way to answer questions and resolve issue that
arose. Very Knowledgeable about summit county!


As an entrepreneur living in a world-class ski town, the options for first-time
ownership are slim to none. She was willing to take the time to listen to exactly what
I was looking for and didn’t waste my time showing me properties that didn’t fit my
needs. Her local knowledge was apparent and made me feel at ease. Overall I
really enjoyed the experience.


I was very tentative about buying a home and felt that I would never be able to
qualify and find a home. Sinjin was great because she started me out looking at a
good variety of places and never pushed for more. As I started to find I could truly
purchase more, she helped me find my own house which was way beyond my
expectations! She is terrific and super responsive! She always got right back to me,
even on weekends!

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