She was re-elected last week with the second-highest number of votes in the ward after Ann Court.
She was initially voted onto the council in a by-election called to replace Willow-Jean Prime after she won a seat in Parliament in 2017.
Stratford previously served two part-terms as the Kawakawa representative on the Bay of Islands-Whangaroa Community Board, where she also initially won her seat in a by-election.
Stratford's selection brings a male/female, east/west balance to Tepania.
The 46-year-old of Ngāpuhi and Welsh descent is a mother of three children aged 11 to 20.
She originally became involved in local politics and Civil Defence after her home in Karetu, east of Kawakawa, was destroyed in a storm. She now lives in Haruru.
She used to own Kawakawa's famous Trainspotter Cafe with her husband Daniel.
Stratford stood for the mayoralty as well as a council seat in the October 8 election. She finished six in a field of nine mayoral candidates with 1616 votes.