- Building Management System Integrators Acquired By British Gas Trading
- Building Materials of America Acquisitions
- Building Materials Europe B.V. Acquisitions
- Building Products of Canada Acquired By Compagnie de Saint-Gobain S.A.
- Building Solutions Acquired By SolarCity
- Building Specialties Acquired By The Cook & Boardman Group
- Building Supply and Lumber Acquired By Homewood Holdings
- Building Systems Solutions Acquired By Parallel Technologies
- BuildingBlok Acquired By Contractors Register
- BuildingConnected Acquisitions
- BuildingFootprintUSA Acquired By LightBox
- BuildingIQ Acquisitions
- Buildingsense Australia Pty Acquired By BuildingIQ
- BuildIT Software & Solutions Acquired By FARO Technologies
- Buildium Acquisitions
- Buildmedia Acquired By The Boundary Architectural Visualisation
- BuildOps Acquisitions
- Buildor AB Acquired By Byggmax Group AB
- BuildOut Acquisitions
- Buildsafe Acquired By Infobric AB
- Buildspan Acquired By SIG
- BuildThis Acquired By Webspec Design
- BuildTools Acquired By eCommerce Industries
- BuildTraders Acquisitions
- Built 2 Spec Acquired By Angstrom Technology
- Built Franchise Systems Acquired By MTY Food Group
- Built Right Pool Heaters Acquired By Fluidra S.A.
- Built Robotics Acquisitions
- Built Strong Exteriors Acquired By Restoration Builders
- Built Technologies Acquisitions
- Built-Rite Tool & Die Acquired By Beacon Manufacturing Group
- Built.io Acquired By Software AG
- BuiltRight Industries Acquired By Fluidra S.A.
- Builtrite Holdings Acquisitions
- Buitendijk Slaman BV Acquired By Taks Handling Systems BV
- Buitex Recyclage Acquired By Compagnie de Saint-Gobain S.A.
- Buitoni Food Acquired By Brynwood Partners
- BUK Kunststofftechnik Acquired By Borromin Capital Management
- Buka Entertainment Acquired By 1C
- Bukh Bremen Acquired By Alliance Marine Services
