Your Trusted Law Firm in the Greater New York Area

Plan your legacy with confidence. We help individuals and families secure their future with custom estate planning, wills, and trusts—tailored to their needs.

Custom Legal Strategies
Risk-Aware Planning
Client-First Commitment
Court Representation

Trusted Legal Support with Proven Results

We’ve helped thousands of individuals and businesses navigate legal challenges with confidence and clarity.

95
+

Years of combined legal experience

$
200
M
+

million value of estate assets protected

$
12
M
+

compensation secured for personal injury clients

3,500
+

Real Estate transactions

Your Trusted Legal Partner in New York

K Diffley Law Group is committed to delivering strategic, client-focused legal solutions. With broad experience across real estate, business law, court representation, and estate matters, we help clients build a strong legal foundation for long-term success.

WHO WE ARE

Experienced Legal Counsel, Tailored to
Your Needs

At K Diffley Law Group, we provide thoughtful, personalized legal guidance designed to meet each client’s unique goals. Drawing from deep experience across a wide range of legal areas, our team helps individuals and businesses move forward with confidence and clarity.

WHO WE ARE

Experienced Legal Counsel, Tailored to Your Needs

K Diffley Law Group is committed to delivering strategic, client-focused legal solutions. With expertise across commercial and residential real estate, business transactions, tax resolution, and estate planning, we help clients build a strong legal foundation for their success.

ABOUT US

K Diffley Law Group is committed to delivering strategic, client-focused legal solutions. With expertise across commercial and residential real estate, business transactions, tax resolution, and estate planning, we help clients build a strong legal foundation for their success.

PRACTICE AREAS

Comprehensive Legal Services Tailored for You

Explore our core areas of expertise and discover how we can support your business and personal legal needs.

We love our Clients & Our Clients Love Us

Here’s what they had to say

Amazing law firm. The staff is always so helpful and professional.
Courtney
I was referred to K Diffley Law and couldn’t be more grateful. They made a tough situation easier to navigate.
Crystal
Very responsive and great communication. Would absolutely recommend them!
Carlos
These guys are incredible and extremely knowledgeable. I had a great experience with them.
Troy
This is the only firm I trust with my legal needs. Exceptional service every time.
Johanna
Kevin is an incredible attorney who really cares about his clients. He explained everything clearly and was always available.
Reggie
Kevin Diffley is amazing. He’s so on point and always delivers.
Alex
K Diffley Law Group guided us through a complex real estate transaction with ease. Their expertise was invaluable!
Michael S.
Their proactive approach helped me resolve my tax issues efficiently. Highly recommend!
Jennifer L.
Incredibly knowledgeable and responsive legal team. They truly care about their clients' success.
David R.
Contact Us

We’re Here to Help

Whether you need legal guidance for real estate transactions, business matters, estate planning, or court representation, our team is ready to assist you.

Get in Touch

516-750-1973

Directions

26 Jericho Turnpike, New Hyde Park,
NY 11040

Other locations such as Westchester, Bronx, Queens, and Suffolk by appointment only.

Office Hours

Monday – Thursday: 9:30 AM – 5:30 PM
Friday: 9:30 AM – 4:30 PM
Saturday – Sunday: Closed

Stay Connected
on Social Media

Let’s talk about how we can help. Whether you have a question, need legal guidance, or want to schedule a consultation — we’re here to assist you.

Thank you for reaching out!
We've received your message and will be in touch shortly. If your inquiry is urgent, please call us directly at 516-750-1973.
Oops! Something went wrong while submitting the form.
Contact Us

We’re Here to Help

Whether you need legal guidance for real estate transactions, business matters, estate planning, or court representation, our team is ready to assist you.

Get in Touch

516-750-1973

Directions

26 Jericho Turnpike, New Hyde Park,
NY 11040

Other locations by appointment only.

Office Hours

Monday – Thursday: 9:30 AM – 5:30 PM
Friday: 9:30 AM – 4:30 PM
Saturday – Sunday: Closed

Stay Connected
on Social Media

Let’s talk about how we can help. Whether you have a question, need legal guidance, or want to schedule a consultation — we’re here to assist you.

Thank you for reaching out!
We've received your message and will be in touch shortly. If your inquiry is urgent, please call us directly at 516-750-1973.
Oops! Something went wrong while submitting the form.