Straightforward estate planning, wills, trusts, and small business legal services — designed for Long Island families and entrepreneurs who want clarity, not complexity.
We focus on what Long Island families and small business owners actually need — no bloated retainers, no unnecessary complexity.
Comprehensive planning to ensure your assets go where you intend — protecting your family and your legacy now and in the future.
Learn more →A properly drafted will is the foundation of any estate plan. We make the process fast, affordable, and completely clear.
Learn more →Revocable living trusts, special needs trusts, and more — tailored to avoid probate and protect your beneficiaries.
Learn more →LLC formation, operating agreements, business contracts, and succession planning for Long Island entrepreneurs and founders.
Learn more →Health care proxies, living wills, and durable powers of attorney — essential documents every adult should have in place.
Learn more →Designate guardians for minor children and plan for incapacity — giving your family peace of mind for every scenario.
Learn more →Greg keeps the process organized and manageable — most clients complete their estate plan in just a few meetings.
A one-hour meeting — online or in person at our Holbrook office — to understand your goals and outline your options. No charge, no obligation.
Greg drafts a tailored plan with flat-fee pricing upfront. No hourly billing surprises. You approve the scope before we begin.
Greg walks you through every document in plain English. You can ask questions and request revisions until everything feels right.
We schedule a signing date that works for you. Your executed documents are delivered securely, both physically and digitally.
From Moriches to Roslyn, Greg has helped families and business owners across Long Island get their legal affairs in order.
"I'd been putting off my will for years. Greg made the entire process so clear and manageable — done in just a couple of meetings. I finally feel like my family is protected."
"Greg was incredibly patient and thorough. He explained every option without making it feel complicated. I walked away with a complete estate plan and total peace of mind."
"As a small business owner, I needed an LLC set up and a succession plan in place. Greg handled everything professionally and made sure I understood every step of the way."
Greg Greiner is the founder of Greiner Law PLLC, providing estate planning and business law services to Long Island families and entrepreneurs. With over 10 years of legal experience, Greg helps clients navigate wills, trusts, and guardianship planning with a clear and practical approach.
His goal is to simplify the process and ensure every client understands their options and feels confident in their plan. In addition to estate planning, Greg advises small business owners on entity formation and contract review — helping build strong legal foundations from the start.
Greg lives on Long Island with his family and understands firsthand the importance of having a clear plan in place for the people and the business you care about most.
Book a free consultationYour first consultation is always free. Let's figure out what you need — together.
gregorycgreiner@gmail.com · Holbrook, NY · Serving all of Long Island