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Ryan W. Cunningham
also known as David Marshall Datz PC, real estate attorney
About Ryan
Biography
Ryan practices residential real estate law and effectively represents buyers, sellers, and lenders. His legal experience ranges from a solo-practitioner law firm to the General Counsel's Office of the Boston Public Health Commission (BPHC), the nation’s first Public Health Commission, where Ryan advised and defended the agency’s approximately 1,800 employees and litigated in Suffolk Superior Court. While at BPHC, he wrote substantial portions of a successful and precedent-setting legal brief before Massachusetts Court of Appeals. Ryan is also former small business owner and a licensed Massachusetts Real Estate Broker. He earned a Bachelor of Science degree in Business Administration from Babson College and a Juris Doctor degree from Suffolk University Law School.
Prior to joining Datz Law, Ryan ran a successful real estate law practice with Ligris + Associates for over seven years. Before joining the bar, Ryan worked in Global Marketing and Communications at Reebok International Ltd. World Headquarters where he helped oversee and create international marketing campaigns. He also interned with the Commonwealth of Massachusetts Office of the State Auditor where he assisted in large educational audits of the Commonwealth’s public universities.
Using the unique skill sets he has obtained from these diverse industries, Ryan creates dynamic and efficient problem-solving solutions to more effectively advocate for the interests of his clients.
Practice Areas
2
Practice Areas
Residential Real Estate
90%
15 years
Estate Planning
10%
8 years
Fees and Rates
Cost
Payment Methods
- Check
- Credit Card
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Chat withLicenses
Licensed in Massachusetts for 13 years
State: Massachusetts
Acquired: 2012
No misconduct found
Location
David Marshall Datz, PC
530 Tremont Street, Boston, MA, 02116
David Marshall Datz, PC
167 Commercial Street, Provincetown, MA, 02657
David Marshall Datz, PC
179 Cranberry Highway (MA-6A), Orleans, MA, 02653
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Ryan W. Cunningham's Reviews
Showing 1 - 5 of 44 client reviews from Avvo
Posted by Maryellen | January 21, 2026 | Hired Attorney
This review is from a person who hired this attorney.
Excellent experience!
Working with Ryan Cunningham was an excellent experience. He was professional, thorough, and extremely easy to communicate with throughout the entire real estate process. Ryan’s attention to detail and clear guidance helped ensure everything went smoothly and on schedule. His calm, knowledgeable appr...
Ryan Cunningham
Replied last February 1, 2026Thank you so much for the kind words! I truly appreciate you taking the time to share this. It was a pleasure working with you, and smooth transactions like this are always the result of strong collaboration and clear communication on all sides. I’m grateful for the opportunity to work together on behalf of our clients and would welcome the chance to do so again anytime. Thanks again for the thoughtful review!
Posted by Sabatino | December 23, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Attention to detail & timely completion of home closing
Choosing Ryan's services for our home closing was a great decision. We felt we were in good hands every step of the way. Ryan's attention to detail is fantastic, and we ended up being ahead of schedule to close sooner than expected. Thank you!
Ryan Cunningham
Replied last February 1, 2026Thank you so much for the kind words! I truly appreciate you taking the time to share your experience. It was a pleasure representing you, and I’m glad you felt supported and well-informed throughout the process. Congratulations again on your new home, and I wish you all the best as you settle in. If I can ever be a resource down the road, please don’t hesitate to reach out!
Posted by anonymous | December 9, 2025 | Hired Attorney
This review is from a person who hired this attorney.
A dream to work with!
Working with Ryan was a breeze! He was very helpful in walking me through my first home buying process. He was great at communicating and helping me understand everything. Very professional, easy to talk to and patient especially since neither party used a realtor!
Ryan Cunningham
Replied last December 9, 2025Thank you so much for the kind words! It was a pleasure helping you through your first home purchase, especially without realtors involved. I’m glad the process felt clear and smooth. Wishing you all the best in your new home!
Posted by Luke | November 25, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Ryan Cunningham, Five-Star Real Estate Attorney.
I highly recommend Ryan Cunningham. At 55, I never expected to need to buy a condo on short notice, but life had other plans for me. Ryan made the whole process smooth and far less stressful. He moved quickly, explained everything clearly, and was always responsive. His attention to detail and steady...
Ryan Cunningham
Replied last December 9, 2025: Thank you so much for this incredibly thoughtful review. Buying on short notice can be overwhelming, and I’m truly glad I could help make things feel smoother and less stressful for you. It was a pleasure working with you, and I really appreciate your trust throughout the process. If you ever need anything down the road -or if friends or family find themselves in a similar situation - I’m always here to help. Wishing you many happy years in your new home!
Posted by Deb | August 21, 2025 | Hired Attorney
This review is from a person who hired this attorney.
Great Real Estate Lawyer
Ryan Cunningham and his paralegal team were wonderful partners in the sale of our cottage condo in Provincetown, MA. Ryan was always ready to answer any questions and communicated with our broker about every detail. He was timely, completely professional and at the same time relaxed and warm. Ryan re...
Ryan Cunningham
Replied last September 24, 2025Thank you so much for your kind words! It was a true pleasure working with you on the sale of your condo. I’m glad I could help make the process smooth and keep everything clear along the way. Your trust means a lot to me, and I really appreciate your recommendation. Wishing you all the best, and please don’t hesitate to reach out if you ever need anything in the future!
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Experience
Honors
2020
Clients' Choice Award, Avvo
Work Experience
2019 - Present
Attorney, David Marshall Datz, PC
2012 - Present
Attorney, Ligris & Associates, PC
Associations
2011 - Present
Massachusetts Bar AssociationMember
2011 - Present
Boston Bar AssociationMember
2011 - Present
Massachusetts Lesbian and Gay Bar AssociationMember
Sample of Legal Cases
RYO CIGAR ASSOCIATION. INC., et al v. BOSTON PUBLIC HEALTH COMMISSION
Successful Defense against Big Tobacco
Education
2011
Suffolk University Law School
JD - Juris Doctor
2006
Babson College
Business Management
Speaking Engagements
2019
Listing at the Highest Level
First Time Home Sellers Real Estate Seminar
Publications
2011
Mass Cases
Appellate Court Brief
Languages
English