Greystone Property Tax Advisors, LLC

We work with a select group of owners of diverse commercial property portfolios to deliver optimized real estate tax savings

We provide a single point of contact for all of your tax appeals, reports, budgets & acquisition assistance

We free up asset managers and in-house administrative staff to focus on their primary responsibilities

Greystone Value Proposition

Independent & Trusted Advisor
Cost Effective For You
Centralized Approach



  • Over 30 years of experience with proven track record
  • Coverage in all markets
  • Long established network of local consultants

Independent & Trusted Advisor

  • Independent management of tax consultants
  • A focus on individual consultants rather than firm
  • Analytically-based appeals

Cost Effective For You

  • Pay us only when tax savings are acheived
  • Incur no out-of-pocket expense
  • Avoid fixed costs associated with in-house resources

Centralized Approach

  • Single point of contact
  • Consolidation of large amounts of data from many sources
  • Deadline management

Greystone Services

Optimize real estate tax savings through appeals

  • Long established network of best in class tax consultants
  • Strategic & thoughtful analysis
  • Strong advocacy & negotiation

Customized quarterly & year end reports

  • Customized quarterly reports
  • Ongoing support for investor presentations
  • On-demand property analytics


  • Annual budget recommendations
  • Uniform & timely deliverables

Acquisition/disposition Assistance

  • Review of market analysis & historic values
  • Multiyear forecast of valuation & tax implications

Greystone Team

Greystone Management

William Quigley, Jr., Esq. | Principal & Founder

Bill is a practicing attorney with over 30 years of experience in commercial real estate, tax & trial work representing developers, REIT’s, banks, landlords and tenants. Prior to starting Greystone, Bill ran his own practice, and was a partner with Quigley, O’Connor & Carnathan, and a lawyer at Bingham, Dana & Gould. Bill holds a B.A. from Brown University & a J.D. from Boston University School of Law.

Andrew Borggaard | Chief Operating Officer

Andy is the founder of BearBrook Group which pairs seed investment with advisory services for early stage businesses. Prior to founding BearBrook, Andy was an executive with Eze Software Group, a financial services software company. Prior to Eze, Andy served as Deputy General Counsel with Genuity, a corporate lawyer at Ropes & Gray and a C.P.A at PricewaterhouseCoopers. Andy holds a B.S. in Accounting from Northeastern University and a J.D. from Boston College Law School.

Ann Foley | Operations Analyst

Ann has over 10 years of experience in commercial real estate including portfolio management, financial analysis, marketing, and lease administration. Prior to joining Greystone, Ann worked as Account Coordinator for Newmark Grubb Knight Frank in Boston. Ann holds a B.A. in Spanish & Business from St. Lawrence University.

Pam Ronan | Business Development

Pam has over 20 years experience in business and client development. Prior to joining Greystone, Pam worked as a Business Development Representative for Mac + Lee. Pam was formerly a Director of Institutional Sales for UBS and held similar roles with Dillon Reed & Co. and Kemper Securities. Pam holds a B.A. from Hobart and William Smith Colleges.