who we are:
our vision & mission
At Windmill Hill Consulting, we believe that great fundraising starts with conversations and intentional planning.
At Windmill Hill, we believe nonprofits deserve tailored, strategic partnerships that drive transformational results.
Since 2006, we’ve partnered with nonprofit organizations to unlock donor potential, inspire leadership alignment, and build sustainable fundraising foundations.
Our mission is simple: to empower nonprofits with the clarity, tools, and confidence they need to achieve bold and measurable growth. From donor data analysis to leadership engagement strategies, we become a collaborative partner dedicated to your success.

how we got here: our story
Windmill Hill Consulting was founded by Barbara O’Reilly, CFRE, driven by a passion for helping nonprofits overcome the challenges of stagnant fundraising and unaligned leadership. After decades of experience leading national fundraising initiatives, Barbara set out to create a firm dedicated to delivering hands-on, results-driven solutions tailored to each organization’s unique needs.
Today, Windmill Hill Consulting operates as a trusted collaborative partner to nonprofits nationwide, built on a foundation of collective expertise, practical strategy, and a commitment to empowering our clients.
what makes us different
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Tailored, Collaborative Processes
We understand that every nonprofit is unique—there’s no one-size-fits-all plan. That’s why our proven four-step approach (Assess, Dream, Plan, Do) is designed to unlock each client’s specific opportunities for growth.
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Long-Term Impact
Beyond solving immediate challenges, we equip nonprofit teams with the tools and knowledge to sustain—and scale—their success for years to come.
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A Team of Experts Invested in Your Mission
Windmill Hill is more than a consulting firm—we’re your embedded partners, presenting decades of fundraising, leadership, and operational expertise to nonprofits like yours.
Ready to Partner with a Team Built for Your Success?
See how nonprofits are achieving bold results with Windmill Hill Consulting.
Explore Our Case Studies →
Meet the experts behind windmill hill consulting
At Windmill Hill Consulting, our impact comes from the collective expertise of our passionate team of nonprofit fundraising professionals. Each member of our team brings deep experience, unique perspectives, and a shared commitment to helping nonprofits unlock their full potential.
Want to learn more about the talented individuals who make Windmill Hill thrive? Explore the full backgrounds and specialties of our team, and see how we’re ready to partner with you to elevate your fundraising success.