Spire

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Assessment is open now, with first ratings expected in 2026. We reply to every enquiry ourselves.

Built on proven expertise

The framework is new. The people behind it are not.

Spire was designed by people who have built industry-wide measurement before, alongside operators and investors who know what an assessment has to survive in practice.

Founders

  • Dr. Martijn Stroom

    Founder and CEO, Spire

    Ph.D. in Real Estate Finance (2023). Leading Spire since 2021.

  • Prof. Dr. Nils Kok

    Professor of Real Estate Finance, Maastricht University

    Co-founder of GRESB (2009), founding team GeoPhy (2016), Investment Committee BPF Bouw.

  • Jill Brosig

    Chief Innovation Officer, Harrison Street

    Senior Managing Director of all global Harrison Street impact initiatives.

Advisory board

  • Dr. Jacques Gordon

    Director of the Graaskamp Center

    Former Global Strategist at LaSalle Investment Management.

  • Dr. Chris Pyke

    Chief Innovation Officer, GRESB

    Former Vice President of Research at the U.S. Green Building Council.

  • Fulya Kocak

    Owner and CEO, Fulya Kocak LLC

    Former Senior Vice President ESG at NAREIT.

  • Lauren Winkler

    Founder and Managing Partner, Library Ave Consulting

    Former Senior Director ESG and Innovation at Green Cities Company.

Sector and impact consultants

  • Lauren Winkler

    Founder and Managing Partner, Library Ave Consulting

    Former Senior Director ESG and Innovation at Green Cities Company.

  • Rachel Mavrothalasitis

    Principal and Founder, Reach&Root Partners

    Chief Operating Officer at the Multifamily Impact Council.