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“Top-five-ranked U.S. homebuilding companies don’t happen overnight.
Except when they do.
These two lines almost wrote themselves in early 2024 when Sekisui House skyrocketed into the top tier of U.S. homebuilding with its $4.9 billion acquisition of MDC Holdings.
Sumitomo Forestry’s announced $4.5 billion acquisition of Tri Pointe Homes closed last week, triggering a similar shake-up in the power dynamics of the U.S. homebuilding industry. The Tri Pointe acquisition signals Sumitomo’s intent to scale nationally.
But for years – over a decade – a subtler, arguably more important story of capability-building has been shaping Sumitomo’s game-changing strategy for its 2026 peak. DRB Group.
Long before Sumitomo Forestry made its move on Tri Pointe, it was already patiently laying the foundation for the 330-year-old company’s U.S. strategy – an operating model.
DRB Group – under CEO Ronny Salameh’s leadership and in partnership with Sumitomo business leaders – has become one of the most valuable learning and proving grounds for the global enterprise based in Tokyo, Japan, in the U.S.
A decade of compounding – without breaking the machine
When Salameh reflects on the early years, the headline figures – doubling twice over 10 years and expanding from a 300-home private builder into a $3 billion, top-20 company – only tell part of the story.
The harder part lay in one of homebuilding’s fundamental paradoxes.
“The real question wasn’t ‘Can we grow?’” Salameh says. “It was ‘Can we grow and still feel like DRB Group?’”
That quandary – easy to grasp but hard to do – runs as a throughline in DRB’s 10-year journey.
From early organic expansions into Raleigh (2011) and Washington Metro (2013), to later moves into Northern Virginia and Orlando, to a steady cadence of acquisitions – Fielding Homes, Knight Homes, Biscayne Homes, and ultimately the Brightland Homes combination – DRB’s growth has been deliberate, steady, humility-fueled, not impulsive.
Salameh’s approach to scaling while staying true to the enterprise’s entrepreneurial DNA is straightforward:
- Build the culture first
- Invest in the right people
- Plan strategically
- Execute a clear integration roadmap
Then comes the real hard part, striking that balance that many builders talk about as the Holy Grail of operating cultures – but few manage to sustain at scale:
Fire-in-the-belly autonomy with accountability across the strategic and operational value chain.
The operating model: Local muscle, enterprise spine
At DRB Group, those intricate balances run as a double helix in how decisions get made. Division leaders operate with genuine authority – on land, product, pricing and execution – while enterprise systems standardize financial controls, reporting and capital allocation rigor.
“Integration must strengthen – not suffocate – local performance,” Salameh says.
That philosophy is not Harvard Business Review-style enterprise theory. It has woven ever-stronger operational sinews through acquisitions and integrations, including the 2025 Brightland Homes consolidation – arguably the clearest sign yet of DRB’s strategic role in Sumitomo Forestry’s U.S. strategy.
And that was exactly what Sumitomo Forestry recognized early on.
“The strength of the organization stood out most,” says Atsushi Iwasaki, Managing Executive Officer at Sumitomo Forestry. “A powerful support system by tenured corporate leaders allows divisions to focus on selling and building quality homes… while corporate finance oversight ensures strong governance.”
That combination – field-level entrepreneurship supported by disciplined enterprise oversight – has become the connective fabric binding DRB’s growth to Sumitomo Forestry’s ambitions as a leading U.S. residential real estate player.
From capital partner to operating enterprise
Ten years ago, Sumitomo Forestry’s U.S. strategy was effectively a holding company portfolio game plan – with stakes in regional builders, each operating with significant independence, as long as they met mutually agreed-upon operational and financial performance goals aligned with strategic objectives.
Today, that model is developing into something different.
“Sumitomo is no longer simply an investor in American homebuilding businesses,” as we wrote last year following the Brightland consolidation. “It is now an American homebuilding enterprise – with one name, one leadership team, and one flagship that is evolving in prominence.”
DRB Group has quietly strived to become the flagship.
And the shift is not just structural – rather, it’s the bedrock of purpose.
Sumitomo Forestry measures success in its operating partners across three areas: customer satisfaction, employee satisfaction, and alignment with its long-term strategic vision, Mission TREEING 2030. That framework closely aligns with Salameh’s description of leadership – not as authority, but as stewardship.
“When you understand that what you’re building will outlive you – communities, careers, partnerships – you start thinking differently,” he says. “Stewardship means protecting the brand, the people, and the culture for the next chapter – not just the next quarter.”
It’s a perspective, he notes, reinforced by Sumitomo Forestry’s over 330-year heritage.
Patient capital, selective growth
One of the most consequential decisions in DRB’s evolution, Salameh says, was choosing long-term capital over a sugar-high, short-term sprint out of the gate.
“Choosing long-term capital over short-term acceleration changed everything,” he says. “It allowed us to invest in infrastructure, people development, portfolio diversification, and land strategy – before those investments showed up in margins.”
That patience shows up in how DRB approaches growth today.
“We don’t chase cycles. We build through them,” Salameh says.
From Sumitomo Forestry’s side, that discipline is intentional.
The company works with DRB leadership on annual, three-year, and 10-year planning horizons – while allowing earnings to remain in the business and supplementing capital through shareholder loans to support long-term expansion.
In other words, growth is financed to persist as a smooth upward arc through times of turbulence.
The inflection point – and what comes next
If the first phase of Sumitomo Forestry’s U.S. strategy was about assembling a portfolio of geographically-specific capabilities, and the second phase was about consolidating and aligning it, the phase currently taking shape looks decidedly more ambitious:
Operationalizing the enterprise.
The Brightland integration demonstrated DRB Group’s ability to absorb and scale.
And within that strategy, DRB’s role is becoming clearer.
“DRB Group is the only and the largest platform… that can turn into an even larger entity which can host further acquisition and integration,” Iwasaki says.
Our takeaway from Iwasaki’s vision is that Salameh understands the imperative and the opportunity as a dual mission: a launching pad and amplifier of a systemic culture of capability.
“Ten years ago, DRB Group was a strong regional builder with ambition. Today… we are a scaled, nationally respected platform – still entrepreneurial at heart.”
Vertical integration: the next layer of advantage
If scale is the headline, vertical integration is the storyline – and increasingly, the determining operational factor.
For Sumitomo Forestry, that strategy is clear. Its U.S. platform includes homebuilding, building materials, component manufacturing, land development and investment. The goal is to connect these capabilities into a unified system –a global value chain centered on wood, construction and long-term asset performance.
DRB Group has become the real-world, market-tested, operational footprint for carrying out, learning, improving and excelling in this strategy in real time.
“We have served as a proving ground for vertical integration strategies that strengthen supply chain reliability,” Salameh says. “The key lesson: integration must enhance local agility.”
Agility, not in the abstract, but in an on-the-ground operational sense.
Because integration, done poorly, creates friction. It slows decision-making. It disrupts local market responsiveness. It introduces bureaucracy into what is, at its core, a relationship-driven business.
Sumitomo Forestry appears to understand that risk – and to be managing it deliberately.
“We carefully choose the company,” Iwasaki says of acquisition targets. “It needs to have cultural similarity and be run by a likeminded founder/operator.”
That cultural filter is not incidental. It’s intentionally a load-bearing, internalized core. It’s what allows integration to be accepted at the field level – not imposed from above.
And it helps explain why DRB Group has been able to integrate multiple acquisitions without the kind of organizational disruption that often follows scale.
“The fact there wasn’t any voluntary turnover after integration shows the business combination succeeded,” Iwasaki notes.
In a business where talent retention is often the first casualty of M&A, that outcome stands out.
Beyond for-sale: expanding the revenue model
At the same time, DRB’s evolution has not been limited to traditional for-sale homebuilding.
The company moved early into build-for-rent and fee-build development, creating additional revenue streams and positioning itself across multiple housing demand channels.
From Sumitomo Forestry’s perspective, that entrepreneurial expansion is not only accepted—it’s encouraged.
“DRB Group’s senior management has a proven track record of expansion success through rapid integration and scaling size to drive quicker profitability,” Iwasaki says. “Entrepreneurship is built into DRB Group’s DNA.”
That combination – entrepreneurial initiative supported by patient capital – has allowed DRB to move into adjacent business lines without compromising its core.
It also reinforces a broader strategic point:
Diversification is no longer optional.
It’s a hedge against volatility, a driver of margin resilience, and increasingly, a prerequisite for scale.
The industry signal: scale, structure, and staying power
That brings the story back to where it began – with Sumitomo Forestry’s acquisition in February of Tri Pointe Homes.
On its surface, that deal is about scale. It moves Sumitomo Forestry’s U.S. platform into the top tier of homebuilders by volume and adds geographic reach, product diversity, and a premium positioning in markets like California.
Underneath, it points to something more structural.
It reflects a convergence of three forces now reshaping U.S. homebuilding:
- Global capital seeking long-term exposure to housing fundamentals
- Operating models built on local execution with enterprise discipline
- Increasing control over the value chain – from materials to finished homes
Tony Avila, Chairman of Builder Advisor Group, puts it this way:
“This transaction highlights several important trends… international capital continues to view the U.S. housing market as an attractive long-term investment opportunity… [and] scale and geographic & product diversification matters… to better navigate volatility and potential disruptions.”
Another long-time analyst’s observation sharpens the implication:
“The acquisition of TPH again raises the bar in terms of minimum scale/volume for public builders.”
In other words, the competitive threshold is moving.
And it’s moving in a direction that favors platforms that can combine:
- Size
- Diversification
- Operational discipline
- And increasingly, vertical integration
DRB’s role: platform, not portfolio
Within that shifting landscape, DRB Group’s position inside Sumitomo Forestry’s U.S. strategy may be becoming clearer over time. Not as one of several operating companies. But as the platform.
“DRB Group is the only and the largest platform… that can turn into an even larger entity which can host further acquisition and integration,” Iwasaki says.
It suggests that future growth – whether organic or acquisitive – will increasingly flow through DRB’s operating model, leadership structure, and cultural framework.
And it underscores the importance of what Salameh has built over the past decade.
A company that can grow. A company that can integrate. A company that can scale – and, at the same time, remain essentially and recognizably itself.
What the next decade will test
If the past 10 years have been about growth and alignment, the next 10 will be about something more difficult: Refinement.
“Growth remains important,” Salameh says. “But excellence at scale is the focus. Deeper vertical integration. Smarter revenue generation and land strategy.”
That shift – from expansion to optimization – is where many organizations stumble. It requires discipline in the face of opportunity. Restraint in the face of capital. And clarity about what should – and should not – change.
“The tension is knowing when to accelerate and when to preserve capital,” Salameh says.
That tension is not unique to DRB.
It’s becoming the defining challenge for the entire homebuilding sector.
From growth to legacy
DRB Group still runs on its origin-story DNA.
“Ten years ago… we were a strong regional builder with ambition,” Salameh says. “Today… we are a scaled, nationally respected platform – still entrepreneurial at heart.”
The distinction – for a nationally respected platform at the center of one of the most deliberate and long-term strategic plays in U.S. housing – matters. What’s being built now – across DRB Group, across Sumitomo Forestry’s U.S. platform, and across the broader competitive landscape – goes beyond size.
It is durability and resiliency, a core that is future-proof.
“The next decade won’t just be about size,” Salameh says. “It will be about legacy.”
In a business characterized by cycles, constraints, and constant change, that may be the factor that counts most because it makes these first 10 years only the beginning.