lˈeɪsi hˈæzbiːn ɐ mˈɛmbɚɹ ʌv dˈʌblɪn sˈɪɾi kˈaʊnsəl sˈɪns nˈaɪntiːnhˈʌndɹɪd nˈaɪnti θɹˈiː fˈɜːst ɹˌɛpɹᵻzˈɛntɪŋ ðə sˈaʊθ ˈiːst ˈɪnɚ sˈɪɾi ˈɛɹiə ænd, sˈɪns ðə nˈaɪntiːnhˈʌndɹɪd nˈaɪnti nˈaɪn lˈoʊkəl ᵻlˈɛkʃənz, ðə pˈɛmbɹoʊk ˈɛɹiə ænd ðə ɹˈæθmaɪnz pˈɛmbɹoʊk ˈɛɹiə.
Lacey has been a member of Dublin City Council since 1993 - first representing the South East Inner City area and, since the 1999 local elections, the Pembroke area and the Rathmines Pembroke area.