KW Commercial REAL ESTATE FIRMS- COMMERCIAL & INDUSTRIAL KW Commercial Visit Website 680 Mechanic St Leominster, MA 01473 1-978-840-9000 About Rep Info Map About KW Commercial is the Commercial-Industrial division of Keller Williams. KW is the largest real estate company in the worlds with 160,000 brokers, 1,850 of whom are Commercial. Whom to Contact Duncan Chapman What's Nearby? Distance: 5 10 15 20 25 50 mi.