
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
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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.​
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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.
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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.
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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
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Construction Contracts & Land Use Law
AIA agreements; project management agreements; navigation of development process from conceptual drawing through completion
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Secured Transactions & Real Estate Finance Law
Review of loan documents; advise on lender requirements, and structuring of complex financial closing documents
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Title Defect Resolution & Easement Law
Solving complex chain-of-title issues and legally establishing or disputing property rights​
Bar Admission | Education​​​
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Licensed and in Good Standing in the State of New York
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MIT Graduate Certificate in Commercial Real Estate Analysis
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Graduated cum laude from New York Law School​
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Graduated from SUNY College at Old Westbury with a Bachelor of Arts in Economics and Political Science
