
O’BRIEN LAW OFFICE
The attorney who's been on your side of the table.
Strategic Legal Counsel | Risk Mitigation | Protecting Corporate Real Estate Assets
I provide experienced legal representation for commercial real estate transactions. By combining decades of executive-level portfolio management with rigorous legal oversight, I ensure your leases, acquisitions, and developments are aggressively protected and legally sound.
Legal counsel with
a seat at the table

Most attorneys understand real estate law in theory. Having managed tens of millions in real estate savings and led operations as Head of Real Estate - America at Siemens, I know exactly how legal vulnerabilities in a contract translate to operational disasters.
I leverage this insider expertise to draft stronger agreements, anticipate liabilities other lawyers miss, and fiercely protect my clients' assets.
O'Brien Law Office focuses exclusively on commercial real estate law, with a deep niche in representing corporate tenants and occupiers. Gary O'Brien brings something most real estate attorneys can't: he's sat in the client's chair. As former Head of Real Estate – Americas at Siemens, Gary managed a portfolio spanning tens of millions of dollars in real estate commitments — negotiating the same leases, navigating the same landlord pressures, and absorbing the same operational consequences that his mid-size corporate clients face today.
That insider perspective means Gary doesn't just review your agreements — he understands what's at stake when a clause goes wrong at 2am before a major opening, or when a landlord asserts rights your counsel missed at signing. Mid-size companies and corporate occupiers get senior-level legal counsel, direct partner access, and the kind of responsiveness that large firms reserve for their biggest clients.
Commercial Leasing
Purchases and Sales of Real Property
Construction and Development
Real Estate Financing
Title and Easement Reviews
SERVICES
Commercial Lease Drafting & Negotiation
Tenant protections from hidden liabilities; drafting airtight clauses; and executing complex lease agreements
Real Estate Acquisitions & Conveyancing
Through due diligence to avoid hidden issues; solid contract drafting; and management of closing
Construction Contracts & Land Use Law
AIA agreements; project management agreements; navigation of development process from conceptual drawing through completion
Secured Transactions & Real Estate Finance Law
Review of loan documents; advise on lender requirements, and structuring of complex financial closing documents
Title Defect Resolution & Easement Law
Solving complex chain-of-title issues and legally establishing or disputing property rights
Bar Admission | Education
-
Licensed and in Good Standing in the State of New York
-
MIT Graduate Certificate in Commercial Real Estate Analysis
-
Graduated cum laude from New York Law School
-
Graduated from SUNY College at Old Westbury with a Bachelor of Arts in Economics and Political Science
