Add-on Acquisition • Engineering

Stonewall Group Acquires ADG Architecture

On October 31, 2025, Stonewall Group acquired engineering company ADG Architecture

Acquisition Context

This is Stonewall Group’s 2nd transaction in the Engineering sector.
This is Stonewall Group’s 2nd transaction in the United States.
This is Stonewall Group’s 1st transaction in Florida.

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M&A Deal Summary
Date	October 31, 2025
Target	ADG Architecture
Sector	Engineering
Buyer(s)	Stonewall Group
Deal Type	Add-on Acquisition
Advisor(s)	Generational Group (Financial)

Target Company

ADG Architecture

Fort Myers, Florida, United States

ADG Architecture is a full-service architecture and interior design firm offering creative and functional design solutions for commercial, educational, religious, and public-sector projects. ADG Architecture was founded in 1990 and is based in Fort Myers, Florida.

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Buyer Overview 1

Buyer

Stonewall Group

Lafayette, Louisiana, United States

Category	Company
Sector	Engineering

DESCRIPTION

Stonewall Group is a strategic buyer of lower middle-market architecture and engineering brands across the United States. Stonewall Group is based in Lafayette, Louisiana.

Deal Context for Buyer	#
Overall	2 of 2
Sector: Engineering	2 of 2
Type: Add-on Acquisition	2 of 2
State: Florida	1 of 1
Country: United States	2 of 2
Year: 2025	2 of 2

PREVIOUS DEAL

DATE	TARGET	DEAL TYPE	VALUE
2025-09-08	AMDG Architects Grand Rapids, Michigan, United States AMDG Architects provides architecture and interior design services to clients across education, workplace, civic, worship, and residential markets. AMDG Architects was formed in 1992 and is based in Grand Rapids, Michigan.	Buy	-

DATE

TARGET

DEAL TYPE

VALUE

2025-09-08

AMDG Architects

Grand Rapids, Michigan, United States

AMDG Architects provides architecture and interior design services to clients across education, workplace, civic, worship, and residential markets. AMDG Architects was formed in 1992 and is based in Grand Rapids, Michigan.

Buy

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