The multi-million pound CityFibre project aims to provide gigabit speed connectivity. It is estimated that the upgrade could mean economic benefits for Southend including £24m in boosted productivity and innovation and £15m in new business start-ups.
Greg Mesch, CEO at CityFibre, said: "We are committed to making Southend-on-Sea one of the best-connected digital towns in the UK. Building on our existing investment, which has connected local schools, businesses and public sector buildings, we are now committed to bringing this digital capability to homes and businesses."
CityFibre is working closely with Southend Council to plan and co-ordinate work.
Cllr Andrew Moring of Southend Council said: "We are delighted that Southend-on-Sea is at the forefront of full-fibre roll-out - the finest digital infrastructure the UK has ever seen. This significant investment into the Borough is very welcome.
"This inward investment will help us attract businesses, help develop our emerging creative and tech sector and encourage hundreds of business start-ups. With this extension of the project, the full benefits will soon be felt by everyone who lives and works here."