Cell - 203.824.3913Office - 203.453.0391Fax - 203.458.5039

21 Whitfield Street | Guilford | CT 06437

email -

website -

About Mary O'Neill

Sales Associate - Guilford Main Office Office
21 Whitfield Street, Guilford, CT 06437

Connect with me:

Professional Association

National Association of Realtors

New Haven Middlesex Association of Realtors


Fordham University
B.S. in Business
Concentration in Managment & Marketing

Professional Specialty

I work with all buyers and sellers who are interested in buying or selling a property on the shoreline. I specialize in working with buyers who are relocating to the area providing them with a wealth of knowledge and information to facilitate their transition to a new community. I enjoy sharing my enthusiasm for the shoreline and all that it has to offer.

Community Involvement

In addition to selling real estate, I also work for the Shoreline Chamber of Commerce handling their Public Relations. Working in this role allows me have a unique connection to the Shoreline communities and a strong commitment to local businesses.


I began my real estate career in 1997 selling residential properties North of Boston in Melrose, MA. After relocating to CT in 1998, I pursued a career in Health & Wellness. After many years working as a personal trainer and wellness coach, I returned to real estate and began selling in the Milford/West Haven/Orange/Woodbridge area. I joined William Raveis in 2016 and began selling on the CT Shoreline.


I am a Guilford resident, active in the local community and involved in the school system.
I am passionate about health, education and family.
I enjoy running, working out, reading & cooking.
I live with my husband, Owen, my children, Stephen & Caroline and my two cats, Blackie and Blaze!

Areas Covered

E. Haven, Branford, N. Branford, Guilford, Madison, Clinon, Westbrook, Old Saybrook, Durham & Killingworth


Your Insurance Rep.

Katherine Gauthier
Insurance NPN#
Office - 860.838.3024
Fax - 860.838.3024

Email Insurance Rep. › Insurance Quote ›

Your Loan Officer

Frank Kolb
NMLS Mortgage Loan Originator ID 81725
Cell - 203.980.8025
VM/Fax - 203.672.4414

Email Loan Officer › Loan Quote ›