The company has more than 4,300 staff working across 25 offices around the globe, with headquarters located in Auckland, New Zealand.

A merger with Wellington firm Hollings & Ferner in 1968 formed Beca, Carter, Hollings & Ferner, with the firm eventually known as Beca Group Ltd.[2] The company's name reflects the contribution of George Beca, CBE, DFC, D.Eng (Hon) (1921–2001), who joined the partnership of Gray and Watts in the early 1950s and led the firm for many years.

The company was the engineer for the world's first base isolated structure: the South Rangitikei Viaduct, a 78 metre high, 315 metres long concrete railway viaduct completed in 1981, where the piers can 'step' up to 13cm off their foundations under earthquake loads, dissipating the earthquake's energy without causing any major structural damage.

[5] More recently, Beca's seismic retrofit work has been recognised with major international structural engineering awards, including the retrospective base isolation of lift shafts at Victoria University of Wellington's Rankine Brown Library[6] and seismic retrofit of 8 Willis Street,[7][8] an office building in central Wellington.

Beca was named the Best Provider to Power & Utilities sector at the 2019 Financial Review Client Choice Awards.