White Mountains Bets $97M on Smart Buildings with BaseSix Deal

NEW YORK, NY – April 01, 2026 – In a significant move highlighting the burgeoning value of integrated building technologies, White Mountains Partners announced today its acquisition of a majority interest in BaseSix Systems LLC. The deal, valued at an equity investment of approximately $97 million, positions the investment firm to capitalize on the rapidly growing market for smart building infrastructure.

BaseSix, a Marietta, Georgia-based company founded in 2018, has carved out a niche as a critical provider of low-voltage building systems. The company designs, installs, and services complex integrated solutions across fire & life safety, security, network & wireless, and audio-visual disciplines for a commercial and institutional client base. This acquisition provides BaseSix with substantial capital to accelerate its growth, while marking a strategic expansion for White Mountains Partners into the essential services sector.

A Strategic Play in Essential Services

For White Mountains Partners (WMP), a business unit of the $5.35 billion White Mountains Insurance Group, Ltd. (NYSE: WTM), the BaseSix acquisition is a deliberate execution of its core investment thesis. Launched in October 2023, WMP was established to provide the "first institutional capital" to founder-led businesses in essential services, light industrial, and specialty consumer sectors, typically targeting companies with $10 million to $50 million in EBITDA.

This investment follows a clear pattern, closely mirroring WMP's 2025 acquisition of Enterprise Solutions, a specialty electrical contracting provider. Both deals underscore a focus on companies providing critical infrastructure services that are foundational to modern commercial and institutional operations. BaseSix's expertise in fire & life safety and security & access control systems places it squarely in the 'essential services' category, a sector known for its resilience and non-discretionary demand.

John Daly, CEO and Managing Partner of White Mountains Partners, lauded BaseSix's rapid ascent. "Basesix was founded with a vision to build a best-in-class multidisciplinary systems integration platform," Daly stated. He praised the company's reputation for "on-time, on-budget, high quality work for the most complex integration requirements." This sentiment reflects WMP's strategy of backing proven operators with strong market standing.

WMP's model emphasizes a partnership approach, offering flexible capital without the restrictive timelines of traditional private equity funds. By providing growth capital and strategic support while allowing management teams to retain operational autonomy, WMP aims to foster long-term value creation. The firm’s commitment to not charging portfolio companies monitoring or transaction fees further differentiates its approach, aligning its interests more closely with the acquired company's success.

Fueling a High-Growth Integrator

Since its founding just eight years ago, BaseSix Systems has achieved what its leadership describes as "significant organic growth." The company has become a go-to integrator for complex projects that require weaving together disparate technologies into a single, user-friendly building management solution. This success brought the company to a critical juncture.

"We have now reached an inflection point in Basesix's evolution where the next logical step is to join forces with a strong financial partner," commented Robb Borden, Co-Founder and CEO of BaseSix. Borden, who will continue to lead the company alongside Co-Founder and Executive Vice President Chris Atwell, noted the partnership will fuel the pursuit of "significant growth opportunities ahead, including opening new offices and strategic acquisitions."

The infusion of capital from WMP is set to transform BaseSix from a regional powerhouse into a national player. The explicit mention of strategic acquisitions indicates a plan to consolidate a fragmented market, leveraging WMP's financial backing to acquire smaller competitors and expand its service footprint and technological capabilities. For BaseSix employees, Borden framed the deal as a validation of their efforts, stating their "unwavering dedication and hard work have been the driving force behind building the Company into what it is today."

Riding the Smart Building Wave

The timing of the acquisition places both companies at the crest of a powerful wave of technological and economic trends. The global building automation system (BAS) market, valued at over $100 billion, is projected to surge towards $200 billion by 2030, with some forecasts showing a compound annual growth rate (CAGR) exceeding 13%.

This explosive growth is driven by a confluence of factors. The proliferation of the Internet of Things (IoT), AI, and cloud computing has transformed buildings from passive structures into dynamic, data-rich environments. These technologies enable predictive maintenance, optimized energy consumption based on real-time occupancy, and enhanced security analytics. Simultaneously, a global push for energy efficiency, sustainability, and green building initiatives—often supported by government mandates—is accelerating the adoption of smart systems.

BaseSix operates at the nexus of several high-growth sub-markets within this trend:

• Fire & Life Safety: This market is projected to nearly double to $167.2 billion by 2032. Constantly evolving safety codes from bodies like the National Fire Protection Association (NFPA) ensure a steady demand for system upgrades, inspections, and maintenance.
• Security & Access Control: Driven by heightened security concerns and regulatory compliance, the security system integrators market is expected to reach $26.7 billion by 2030. The integration of physical access control with digital identity platforms is a key trend, creating complex systems that require specialized expertise.

By offering a multidisciplinary platform that combines these critical systems, BaseSix is positioned to meet the demand for holistic, integrated solutions that make buildings safer, smarter, and more efficient.

A Partnership Model for the Future

Beyond the financial injection, the structure of the deal emphasizes continuity and collaboration. The decision to retain BaseSix's founding leadership team underscores WMP's confidence in their vision and operational expertise. This aligns with WMP's stated philosophy of serving as "true partners who respect your company's heritage and culture."

For BaseSix, this was a crucial factor. "We sought a capital partner who shared our core principles, unwavering culture, and strategic vision," Borden explained. "We are excited to partner with WMP to build upon our proven model of success."

The collaboration will allow BaseSix's management to focus on executing its expansion strategy, backed by WMP's financial resources and strategic oversight. As White Mountains Partners looks to deploy up to $500 million in equity, the BaseSix acquisition serves as a flagship investment in a sector critical to the future of urban infrastructure. "We look forward to collaborating with Basesix to help enable the Company's next chapter of growth," Daly concluded, signaling the beginning of a new, ambitious phase for the Georgia-based integrator.