Professional Services Acquisitions in Michigan

Tandem Engineering has acquired Ann Arbor Architects Collaborative, Inc., a multidisciplinary architecture and interior design firm based in Ann Arbor, Michigan; the deal closed on February 2, 2026. The acquisition expands Tandem’s integrated engineering and project management capabilities by adding architecture, interior design and sustainable-design expertise to its service offering.

Guardian Alarm, a Southfield, Michigan-based full-service security company, has acquired Controllor Security Systems, a long-established Metro Detroit security provider serving residential and commercial customers for more than 40 years. The acquisition expands Guardian Alarm's presence in Michigan and brings Controllor's local customers access to Guardian's broader portfolio of monitoring, video surveillance, access control and life-safety services.

4M Building Solutions, a St. Louis–based commercial cleaning platform backed by O2 Investment Partners, has acquired Grand Rapids, Michigan–based Calvary Building Services. The add-on strengthens 4M's presence in West Michigan and brings Calvary's ~79 frontline team members and long‑tenured client contracts onto 4M's platform.

Province, a Las Vegas–headquartered restructuring and financial advisory firm, has acquired Michigan-based O'Keefe, a litigation advisory and forensic accounting specialist. The deal—Province's first since a strategic investment from Trivest Partners—adds 16 advisory professionals and expands Province's litigation advisory capabilities and Midwest presence; terms were not disclosed.

Corridor Capital has made a growth investment in Dart Appraisal, a nationwide appraisal management company headquartered in Troy, Michigan, with Dart's management team (including CEO Michael Dresden) remaining as material owners. Brookside Capital Partners provided debt financing and an equity co-investment to support the transaction; Corridor will work with management to accelerate growth through investments in sales, technology, marketing and strategic acquisitions.

Engage PEO has acquired Axios HR, a Grand Rapids, Michigan-based professional employer organization, from parent company Axios International. The acquisition expands Engage PEO's Midwest footprint and combines Axios HR's local expertise with Engage's national HR outsourcing capabilities to better serve small and mid-sized businesses in the region.

NFP has acquired Benefits Partner, LLC dba Salus Group, an employee benefits consulting, brokerage and administration firm based in Sterling Heights, Michigan. The acquisition is intended to expand NFP’s employee benefits capabilities for the middle-market and deepen its presence and talent base in Michigan and the broader region.

Security 101, a portfolio company of Gemspring Capital, has acquired Eos Business Surveillance Solutions, a Flint, Michigan-based security integration firm specializing in video surveillance, access control, and mobile surveillance trailers. The acquisition expands Security 101's capabilities and Michigan footprint while retaining Eos leadership to continue scaling the mobile surveillance trailer sales and leasing business.

Command Investigations LLC, a portfolio company of Monument MicroCap Partners, acquired SuperiorX Investigations on October 15, 2024. The add-on transaction (financed by Maranon Capital with Charter Capital Partners as sell-side advisor) expands Command's geographic footprint and service offerings in Michigan and the broader Great Lakes region.

EverSmith Brands, a franchised commercial facilities platform owned by The Riverside Company, has acquired Prism Specialties, a leading franchisor of specialty restoration services for electronics, textiles, art and documents. The deal is an add-on to the EverSmith portfolio intended to expand capability and franchise coverage across commercial and residential restoration end markets; Prism's CEO Chris Ring will become Prism Brand President for EverSmith.

The Riverside Company has added Commonwealth Heritage Group, Inc. (CHG), a Michigan-based cultural resource management firm, as an add-on to its PaleoWest platform. The acquisition expands PaleoWest’s geographic footprint and service capabilities—adding maritime/underwater archaeology—and creates a coast-to-coast cultural resources platform to better serve public- and private-sector clients on infrastructure and land-development projects.

Titan Security Group, a Quad‑C Management portfolio company, has acquired the security staffing operation of Prudential Security, Inc., a Taylor, Michigan–based security solutions provider. The deal adds more than 700 team members and expands Titan's service footprint to 14 states; terms were not disclosed.

Quatrro Business Support Services, a finance-and-technology-as-a-service provider backed by Trivest and VSS, has acquired Detroit-based Apparatus Solutions, a team that supports the financial and talent strategy needs of nonprofit organizations. The deal is an add-on acquisition to expand Quatrro's nonprofit-focused service footprint and delivery capabilities nationwide, particularly in Greater Detroit.

Guideboat Capital Partners, a Dallas-based private equity firm, made a growth equity investment in Franworth to support the franchising shared-services platform’s expansion. The funding will help Franworth scale its talent, distribution and service capabilities and allow it to place capital into partner franchise brands while Guideboat’s Mike Sutton joins Franworth’s board.

Class Valuation, a portfolio company of Gridiron Capital, has acquired Metro-West Appraisal Co., LLC and its partner Valuation Link. The add-on deal expands Class Valuation's nationwide staff appraiser network and appraisal management capabilities to strengthen service quality and turnaround times for mortgage lenders.

CJK Group, Inc. has acquired Tweddle Group, a provider of product support, content development, content management, and digital/print distribution solutions. Tweddle Group, headquartered in Clinton Township, Michigan with over 500 employees worldwide, will operate under CJK leadership to expand CJK's technology and service capabilities and diversify its offerings.

Frosch International Travel purchased a 51% interest in the corporate division of Conlin Travel, a Michigan-based travel management firm, while Conlin retains full ownership of its leisure and specialty divisions. The partnership gives FROSCH a larger foothold in the Great Lakes region and provides Conlin access to FROSCH’s global operations platform and technology solutions, with Chris Conlin remaining as Managing Partner.

Strategic Resource Alternatives (SRA), a receivables management and outsourcing firm and portfolio company of Arena Investors, has completed the acquisition of Michigan-based debt recovery firm J.J. Marshall & Associates, Inc. The deal is an add-on to SRA’s platform to expand capabilities into landlord/tenant and medical receivables, strengthen litigation recovery expertise, and extend the company’s geographic footprint beyond Michigan.

The Riverside Company has added Premier Electronics, a Michigan-based fire and life safety services firm, as an add-on to its CertaSite platform. The acquisition expands CertaSite’s technician capacity and Midwest footprint; Riverside plans to invest in sales & marketing, technician utilization tech and training, and cross-selling across the platform.

Alline Salon Group, the largest franchisee of Regis Corporation, has acquired four Supercuts salons located in Livonia, Bloomfield Hills, Rochester Hills and Lake Orion, Michigan. The salons will be folded into Alline's existing portfolio of Supercuts, Cost Cutters and Holiday Hair locations as part of the company's continued regional expansion.

Lexitas, a portfolio company of funds advised by Apax Partners, has acquired Axiom Requisition, a Midwest-based medical record retrieval firm. The acquisition expands Lexitas' nationwide legal support services footprint and adds proprietary record-retrieval technology and capabilities to its offering.

Lexitas, a portfolio company of funds advised by Apax Partners, has acquired Michigan-based Lumen Legal. The acquisition expands Lexitas’ litigation services platform with legal staffing, document review and commercial contracts outsourcing capabilities to serve law firms, corporate legal departments and insurance companies nationwide.

Neighborly, the Waco, Texas–based franchisor of home service brands, acquired Dryer Vent Wizard, a Farmington Hills, Michigan–based dryer vent cleaning franchisor. The deal adds nearly 100 franchise locations in the U.S. and Canada to Neighborly’s portfolio, expanding its network of home-service brands and increasing exposure to Neighborly’s customer base.

Salt Creek Capital, a San Francisco Bay Area-based private equity firm, acquired the lawn- and snow-related assets of Beauchamp Lawn & Snow Service, Inc., a Brighton, Michigan provider of commercial grounds maintenance, landscape installation and snow removal. The transaction facilitates a founder succession/exit while positioning Beauchamp for growth under new leadership and Salt Creek’s platform strategy.