Stonewall Group Buys DE Firm, Expanding Its National Design Footprint

LAFAYETTE, La. – February 16, 2026 – The Stonewall Group, a Louisiana-based national architecture platform, announced today its acquisition of Architectural Alliance, Inc., a prominent design firm headquartered in Wilmington, Delaware. The move establishes a significant foothold for Stonewall in the Mid-Atlantic region and continues its pattern of strategic expansion through partnerships that preserve the identity of acquired firms.

Architectural Alliance, founded in 1987 and operating a second office in Exton, Pennsylvania, will join Stonewall's growing portfolio of design studios. The Delaware firm has cultivated a strong reputation over more than three decades for its expertise in commercial, residential, institutional, and notably, historic and adaptive reuse projects. Per the agreement, Architectural Alliance will continue to operate under its own brand and be led by its current leadership team, a hallmark of The Stonewall Group’s integration strategy.

A Pattern of Strategic Growth

The acquisition is the latest in a series of calculated moves by The Stonewall Group to build a national architecture powerhouse by investing in successful, culturally distinct regional firms. This strategy stands in contrast to more traditional mergers that often result in the dissolution of an acquired firm's brand. Stonewall’s model is built on providing financial and operational support while allowing its partners to maintain their unique identity and local market focus.

“Architectural Alliance represents everything we look for in a Stonewall partner—strong leadership, a legacy of project success, and a proven culture of service,” said Ben Moody, Co-Founder & CEO of The Stonewall Group, in a statement. His comment reflects a consistent philosophy applied across the platform's previous partnerships.

This approach is evident in Stonewall's recent history. The firm has steadily expanded its geographic and service diversity through similar acquisitions, including:

• KSQ Design, a Tulsa and New York-based firm acquired in May 2024, known for its work in higher education and multi-family housing.
• AODK, based in Ohio and Florida, which joined the platform in August 2024, bringing expertise in sacred spaces and wellness hospitality.
• ADG Architecture, LLC, a Fort Myers, Florida firm whose acquisition was finalized in late 2025, strengthening Stonewall’s presence in the Southeast.

In each case, the acquired firms have retained their names and leadership, leveraging Stonewall’s resources to scale operations and pursue larger projects. This “partnership” model reflects a broader consolidation trend within the Architecture, Engineering, and Construction (AEC) industry, where platform firms provide smaller studios with the capital and back-office support needed to compete in an increasingly complex market.

Local Legacy Meets National Platform

For Architectural Alliance, the partnership marks what its leadership calls a “powerful new chapter.” The firm, deeply embedded in the Mid-Atlantic's development community, now gains access to a national network of resources, technology, and expertise. This infusion of support is intended to enhance its capabilities without sacrificing the boutique service model and client-centric approach that have been central to its success since the 1980s.

“Joining The Stonewall Group opens an exciting and powerful new chapter for our firm,” stated Kevin Wilson, AIA, Principal of Architectural Alliance. “Their investment and operational support allow us to enhance our capabilities while staying true to the mission and culture that have guided us since the 80s.”

The decision to maintain the firm’s existing brand and leadership structure is a critical component of the deal, designed to ensure stability for both employees and a long-standing client base of developers, municipalities, and institutions. This strategy aims to prevent the disruption and loss of talent that can often accompany acquisitions, instead focusing on empowering the existing team with enhanced tools and opportunities.

By retaining its identity, Architectural Alliance can continue to leverage the decades of trust it has built in the region while now being able to tap into the financial backing and shared knowledge of a national entity. This hybrid model offers a compelling path forward for established independent firms navigating the pressures of scale and competition.

Shaping the Mid-Atlantic Built Environment

The Stonewall Group's entry into Delaware and Pennsylvania is a strategic move that significantly bolsters its capabilities in several key growth sectors. Architectural Alliance’s distinguished portfolio in urban infill, historic restoration, and mixed-use development provides Stonewall with immediate, proven expertise in markets where these project types are in high demand.

The Mid-Atlantic region, with its dense urban centers and rich history, presents fertile ground for adaptive reuse and historic preservation projects. Architectural Alliance’s specialization in this niche is a valuable asset that aligns with regional trends toward sustainable development and the revitalization of existing building stock. The partnership will likely enable the firm to take on more ambitious restoration and urban renewal projects.

This combination of national resources and local expertise could have a tangible impact on the future skyline and development landscape of the region. Developers and municipal planners may see the newly fortified Architectural Alliance as a more capable partner for large-scale, complex projects that require both nuanced local knowledge and significant financial and operational backing. The acquisition not only expands Stonewall’s footprint but also deepens its collective expertise, making the platform more competitive in bidding for significant institutional and commercial work across the Northeast.