The station is being improved to support a major regeneration of the area led by the new Tottenham Hotspur stadium.
Transport for London has awarded the work to Taylor Woodrow who will start on site this Autumn with work scheduled to be completed by spring 2019.
Improvements will include a new ticket hall and station entrance as well step-free access from street to platform.
Regeneration plans in the area around the new stadium include a museum, hotel and 585 new homes.
Jon Fox, TfL’s Director for London Rail, said: “White Hart Lane station is set for a radical transformation to make life easier and more comfortable for customers.
“The station will see lifts installed for the first time, making it more accessible for everyone, and the new entrance will provide better connections with the local area, supporting the new homes and jobs being created in Tottenham.’
Jez Haskins, Taylor Woodrow’s TfL Sector Director, said: “Taylor Woodrow are pleased to be delivering what will become a new landmark station for TfL, which will benefit from the skills and expertise that we have gained in station upgrades at Victoria and Tottenham Court Road.
“We look forward to working with TfL and all of the local stakeholders to successfully transform White Hart Lane station.”
The station will be available for fans travelling to and from the stadium when it opens in summer 2018 as it will continue to operate throughout the majority of the improvement works.
TfL will be introducing brand new trains on the London Overground route through White Hart Lane station to replace the existing trains which are now over 30 years old.