▁in ▁relative ▁size ▁and ▁population . ▁The ▁District ▁Council ▁of ▁High er com be ▁was ▁included ▁in ▁a ▁Local ▁Government ▁Commission ▁list ▁of ▁ 5 3 ▁local ▁coun c ils ▁with ▁annual ▁re venue ▁of ▁less ▁than ▁£ 2 0 0 0 . ▁Following ▁the ▁commission ▁recommendation , ▁the ▁two ▁coun c ils ▁were ▁re comb ined ▁under ▁the ▁name ▁Te a ▁Tree ▁Gul ly ▁in ▁May ▁ 1 9 3 5 . ▁ ▁It ▁inherited ▁the ▁former ▁ 1 8 5 5 ▁High er com be ▁council ▁ch amb ers , ▁which ▁had ▁been ▁built ▁in ▁Te a ▁Tree ▁Gul ly , ▁and ▁used ▁that ▁building ▁until ▁ 1 9 6 7 . ▁The ▁Old ▁Te a ▁Tree ▁Gul ly ▁Council ▁Ch amb ers ▁surv ive ▁today ▁and ▁are ▁listed ▁on ▁the ▁South ▁Australian ▁Heritage ▁Register , ▁having ▁been ▁the ▁first ▁purpose - built ▁district ▁council ▁ch amb ers ▁in ▁South ▁Australia . ▁In ▁ 1 9 6 7 ▁the ▁Te a ▁Tree ▁Gul ly ▁civ ic ▁centre ▁was ▁opened , ▁compr ising ▁a ▁new ▁council ▁chamber ▁and ▁civ ic ▁hall . ▁The ▁municipality ▁was ▁granted ▁city ▁status ▁and ▁proc laimed ▁as ▁the ▁City ▁of ▁Tree ▁Gul ly ▁in ▁ 1 9 6 8 . ▁ ▁From ▁ 1 9 5 4 ▁to ▁ 1 9 7 1 ▁the ▁population ▁of ▁Te a ▁Tree ▁Gul ly ▁council ▁rose ▁from ▁just ▁over ▁ 2 , 5 0 0 ▁to ▁almost ▁ 3 7 , 0 0 0 , ▁and ▁in ▁ 1 9