The Premier Division was increased from 22 to 23 clubs, and featured five new teams after the promotion of Ashford Town to the Southern League, and the relegation of Chessington & Hook United, Cove and Redhill to Division One: In June 2016, North Greenford United, relegated from the Southern Football League, successfully appealed against their placement in the Hellenic Football League following relegation from the Southern Football League, and were placed in the Combined Counties Premier Division.
[2] Camberley Town, Epsom & Ewell, Hartley Wintney, Walton & Hersham and Westfield applied for promotion to Step 4 for 2017–18.
Division One was increased from 17 to 18 clubs, and featured six new teams after CB Hounslow United, Bedfont & Feltham and Abbey Rangers were promoted to the Premier Division, Dorking Wanderers Reserves left the league, and Sandhurst Town transferred to the Hellenic League: The season began on 6 August 2016 with Ash United and Frimley Green accruing the first points on the board with a 1–1 draw at Young's Drive, Ash.
Frimley Green were deducted the point they earned from this match when it transpired that they had fielded an ineligible player.
Two matches remained unplayed because the visiting clubs were unable to raise teams.