T.Y. Lin International Acquires Structural Engineering Firm Silman

TYLin Acquires Architectural Engineers Collaborative

August 9, 2023

Engineering Services

TYLin Group has acquired Architectural Engineers Collaborative (AEC), a privately held structural engineering firm headquartered in Austin, Texas. The acquisition expands TYLin’s buildings-sector structural capabilities and deepens its presence in the Texas market while allowing AEC to retain its local brand and benefit from TYLin’s global resources.

TYLin Acquires Greeley and Hansen

December 21, 2022

Engineering Services

TYLin has acquired Chicago-based Greeley and Hansen, a century-old engineering firm focused on water, wastewater and environmental engineering, to strengthen its water-sector capabilities across North America and Latin America. Greeley and Hansen will operate as "Greeley and Hansen, A TYLin Company," with several senior leaders transitioning and some retiring as part of the integration.

Quanex Building Products Acquires Tyman plc

April 22, 2024

Building Products

Quanex Building Products Corporation agreed to acquire the entire issued and to be issued share capital of Tyman plc in a recommended cash-and-share offer valuing Tyman at approximately $1.1 billion enterprise value. The deal, unanimously approved by both boards and backed by committed financing, combines complementary window and door hardware, access solutions, and seals/extrusions portfolios to create a larger global building-products supplier with pro forma revenue of roughly $2 billion.

Sila Services Acquires Ahrens & Condill and Tangney & Sons Plumbing and Sewer

August 4, 2025

HVAC & Mechanical

Sila Services, a Goldman Sachs–backed home services platform, has acquired Ahrens & Condill, Inc. and Tangney & Sons Plumbing and Sewer Inc. to expand its footprint in the greater Chicago region. The deals add local HVAC, plumbing and sewer capabilities and teams to Sila’s AA Service Company lead brand in Chicagoland; financial terms and sellers were not disclosed.

Trinity Consultants Acquires Longman Lindsey

November 29, 2023

Engineering Services

Trinity Consultants has acquired Longman Lindsey, a New York–based full-service acoustical consultancy, and integrated it into its Built Environment pillar alongside prior acoustical acquisitions such as Cerami. Founder John Longman will remain a key leader within Trinity's Built Environment division; AEC Advisors advised Longman Lindsey on the sale.

Rimkus Consulting Group Acquires Sullivan Engineering

August 4, 2021

Engineering Services

Rimkus Consulting Group, a global forensic engineering and technical consulting firm, has acquired Sullivan Engineering, a building envelope consulting firm headquartered in New York. The acquisition expands Rimkus' Building Sciences capabilities and broadens its regional presence in the Northeast to deliver enhanced building envelope and restoration consulting services.