Grassi

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Founded in 1980 with just a desk and an empty filing cabinet, Grassi has grown into one of the nation's leading independent advisory and accounting firms. With client satisfaction more than twice the industry average, we're proud to be ranked 16th on Vault's Best US Accounting Firms to Work For. We have earned this reputation through exceptional client service and by staying true to our core values. As strategic advisors, Grassi professionals are dedicated ambassadors of our client's future business aspirations. Everything we do centers on our client's success and the enrichment of our relationships with them. While other firms merge or take private equity funding, Grassi secured its independence by transitioning to an employee-owned ESOP in 2023. This independence empowers us to focus on what matters: exceptional service and strategic guidance to help our clients’ businesses thrive. "Grassi" is the brand name under which Grassi Advisory Group, Inc. and Grassi & Co. Certified Public Accountants, PC, provide professional services. Grassi Advisory Group, Inc. and Grassi & Co. Certified Public Accountants, PC are independently owned firms that practice in an alternative practice structure in accordance with the AICPA Code of Professional Conduct and applicable laws, regulations and professional standards. Grassi & Co. Certified Public Accountants, PC is a licensed CPA firm that provides attest services. Grassi Advisory Group, Inc. and its subsidiary entities provide tax and business consulting services to clients and provide staff and other administrative resources to Grassi.

Company Details

Employees
528
Founded
-
Address
50 Jericho Quadrangle, Suite 200,united States
Industry
Accounting
NAICS
Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Offices of Certified Public Accountants
Tax Preparation Services
Payroll Services
Other Accounting Services
HQ
Jericho, New York
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News

Top Workplaces 2025 Spotlight: Grassi - LI Press

Top Workplaces 2025 Spotlight: Grassi LI Press

Navigating Growth and Challenges: Key Insights from Grassi’s 2025 Food & Beverage Survey - ROI-NJ

Navigating Growth and Challenges: Key Insights from Grassi’s 2025 Food & Beverage Survey ROI-NJ

Prized Seaside Warehouses to Bear Brunt of Tariff Plan - WSJ - The Wall Street Journal

Prized Seaside Warehouses to Bear Brunt of Tariff Plan - WSJ The Wall Street Journal

Louis Grassi - Forbes

Louis Grassi Forbes

Artificial intelligence in the construction industry: An opportunity awaits - The Business Journals

Artificial intelligence in the construction industry: An opportunity awaits The Business Journals

2023 Women in Construction: Jessica Gomes, Grassi Advisors & Accountants - New York Real Estate Journal

2023 Women in Construction: Jessica Gomes, Grassi Advisors & Accountants New York Real Estate Journal

Business Top Workplaces 2025: Long Island’s Top Mid-Size Businesses - LI Press

Business Top Workplaces 2025: Long Island’s Top Mid-Size Businesses LI Press

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