Operator Perspective.
Owner Accountability.

Investing across real estate, operating companies, and private partnerships.

How We Invest

Two Island was founded on
two convictions.

I

Entrepreneurial operators find better opportunities than passive allocators.

II

Active ownership produces better outcomes for everyone involved.

"When you've operated a business, you see risk differently. You see value differently. And you show up differently as a partner."

Who We Serve

Different partners. Same principles.

Two Island Partners real estate ecosystem: owners and operators, sponsors and developers, capital partners, and real assets

Real estate capital from a team that understands the full picture.

We partner with sponsors, developers, owners, and operators across a range of real estate strategies. Whether you're raising equity, looking for a co-investment partner, or structuring something unique, we aim to be thoughtful, responsive, and easy to work with.

JV Equity & Co-Investment

Flexible partnership structures alongside experienced sponsors and developers.

Sale-Leasebacks & Creative Capital

Unlock real estate value while keeping operations in place.

Affordable Housing

Patient, mission-aligned capital for preservation and development.

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How we partner with business owners and operators: build, grow, transition

Capital and partnership that meet you where you are.

A bridge when you need one or a partner for the long run — the right capital for where you are and where you're going.

Succession & Transitions

Stay involved as long as you want. Step back when you're ready.

Search Funds & Acquisitions

Equity and support for talented operators acquiring and building businesses.

Growth & Bridge Capital

A quick bridge to your next stage or a long-term growth partner.

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Co-investor approach: access plus alignment plus execution equals better outcomes

Deploy capital alongside a disciplined, aligned team.

Invest alongside a team whose interests are aligned with yours.

We invest our own capital alongside yours

We invest meaningfully in every deal. Alignment isn't a talking point — it's the structure.

Direct access to decision makers

You know the team, the thesis, and the asset.

Diversified exposure across strategies

Access to real estate, operating companies, and structured investments through a single relationship.

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Every partnership starts with understanding what you're trying to build — and what you're trying to protect.

How We Invest

Multiple perspectives.
One philosophy.

The intersection is the advantage.

We bring together operating expertise, real estate experience, and flexible capital to take on the opportunities that don't fit neatly in a box — across whatever asset class the opportunity lives in.

Two Island Partners ecosystem: operator, owner, investor, real assets

Businesses with strong foundations and room to grow.

Founder Transitions

A path for owners to step back on their own terms — protecting the team, the culture, and the legacy they spent years building.

Entrepreneur-Backed Acquisitions

Capital and partnership for talented operators acquiring and building businesses for the long haul.

Growth & Bridge Capital

Sometimes a quick bridge to the next level, sometimes a long-term growth partner — structured as debt, equity, or both, depending on what the business needs.

Durable, tangible assets built to last.

Industrial Real Estate

Warehouse, manufacturing, and operationally essential facilities across the Northeast, actively managed to create value.

Specialty Real Estate

One-of-a-kind real estate that sits outside the standard box — from solar to marinas — where the right structure is what unlocks the value.

Affordable Housing

Preserving and developing the housing communities people depend on — backed by patient, mission-aligned capital.

Capital shaped to the problem — not the other way around.

Sale-Leasebacks

We unlock the value tied up in owned real estate, turning it into growth capital while you keep operating in place.

Structured Investments

Mezzanine, structured equity, and bespoke instruments designed around the situation rather than a template.

Special Situations

Complex, time-sensitive, or off-the-run opportunities where our breadth lets us move with confidence.

Rooted in Maine, investing for generations.
Our Ecosystem

Backed by more than fifty years
of shared experience.

Two Island operates alongside a multi-generational family of companies spanning real estate development, affordable housing, marine services, and renewable energy. These relationships deepen our reach, sharpen our perspective, and give our partners access to capabilities most platforms can't offer.

Monks O'Neil
Real Estate
Development & Investment
Eagle Point
Affordable Housing
Nationwide
Szanton Co.
Affordable Housing
Maine & Colorado
Keeper Bay
Veterinary & Specialty Healthcare
Real Estate
The Boatswain Group
Marine-Focused
Investment Platform
Our Team

Different Backgrounds.
One Investment Lens.

The opportunities we pursue rarely fit neatly into one discipline — so we built a team that doesn't either. Two Island brings together experience across real estate, operating companies, capital formation, transaction execution, and active ownership.

50+
Years of Family Experience
3
Generations
MM
Mariah Monks
Real Estate · Capital Markets

Leads the firm's real estate platform — from sourcing and underwriting to execution across debt and equity — with a focus on acquisitions, asset management, and capital formation. Previously at North River Company and Guggenheim Partners.

B.A., Hamilton College
MM
Max Monks
Operations · Investments

Sources, executes, and manages investments across new opportunities and the portfolio. Co-founded Keeper Bay's veterinary real estate platform, sourcing $125M+ in senior debt and $75M in equity.

B.A., Vassar; MBA, IE Business School
BW
Brian Waterman
Legal · Partnerships

Works across investments, partnerships, and transaction execution, with a focus on deal structuring. Co-founded Keeper Bay; previously in corporate law (M&A, venture capital) and family office investing.

J.D., Columbia Law School; B.A., Vassar
HI
Haley Israelson
Analytics · Investing

Focuses on building long-term value through disciplined selection, thoughtful structuring, and active ownership. Background in venture capital and private equity across investing and fund management. Former CEO of ElleVet Sciences, which she led through significant growth.

CPA; MBA, Husson University
SB
Sheryl Burns
Controller · Finance

Supports financial reporting, controls, accounting, and operational discipline across the platform.

BM
Bobby Monks · Strategic Advisor

Provides strategic guidance and mentorship, drawing on decades of experience across entrepreneurship, real estate, financing, and operating businesses.

Select InvestmentsRepresentative across asset classes
Insights

Perspectives on partnership, real assets, and the long term.

Operating Companies

Why we underwrite the operator, not just the asset.

Cash flow is only as durable as the people and systems behind it.

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Capital Solutions

The quiet power of a sale-leaseback in succession.

How owned real estate becomes the bridge between liquidity and continuity.

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Stewardship

Downside protection is a return strategy.

Why protecting the floor compounds best over a long horizon.

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Aligned Interests.
Enduring Partnerships.

If you're thinking about what comes next — a transition, a partnership, or a new opportunity — we'd like to hear about it.

Start a Conversation
hello@twoislandpartners.com Portland, Maine