1,700+ local service businesses in Waltham in our database, refreshed October 2026.
36% publish an email address — 647 you can reach by cold email.
442 have no website listed and 1,700+ have no Google rating yet.
0% of rated businesses hold 4.5★ or better.
Area codes
(781)1,400+
(617)179
(857)32
(508)20
(800)19
(978)15
A few Waltham businesses
Law Office of James M. BaronLegal
Delaney & DelaneyLegal
Waltham Day Care CenterChildcare & Education
Temperature DifferenceConstruction
Sherman Lock, Inc.Locksmith & Security
Garden City Maintenance & Landscaping Co.Construction, Landscaping
MobileFuseMarketing Agencies
Formal Oil Co.HVAC
Reaching out in the USB2B cold email is governed by CAN-SPAM: honest headers and subject lines, a physical address and an opt-out you honor. Phone outreach has its own rules, especially for cell phones. Read our CAN-SPAM guide and cold-calling rules before you start.