Contract 1 comprises housing repairs across the borough worth between between £14m and £20m a year over four years.
The other contract is for gas servicing repairs, replacements and upgrades in the north of the borough worth up to £2m each year.
The four-year deals are extendable for up to ten and start in November.
Kier has been repairing and maintaining the Borough’s housing stock since 2000 when it joined forces with Islington Borough Council in one of the first public private partnerships of its kind in the country.