Piha contains a number of Outstanding Vegetation Sites in the operative Auckland Council District Plan.
Number 96 Piha, Piha Parklands, Along Whites Track, North Piha, Manuka scrub on rugged hill country
97 Piha, Piha Parklands, Taitomo Island, Coastal shrubland on exposed rocky coast. Only example in Waitakere Ecological District
98 Piha, Piha Parklands, On headland overlooking Taitomo Island, Coastal herbfield on exposed rocky coast. Only example in Waitakere Ecological District. (Note: probably destroyed by 1994 fire)
99 Piha, Piha Parklands On Fisherman’s Rock Point Phormium flaxland on exposed rocky coast. Only example in Waitakere Ecological District
100 Piha, Piha Parklands Mead Gully by Glen Esk Stream, Piha Catchment. Mature kauri forest on rugged hill country
101 Piha, Piha Parklands, North bank of Wekatahi Stream, Piha catchment, Kauri-tanekaha on rugged hill country
102 Piha, Piha parklands, east bank of Glen Esk Stream, Piha catchment, Kanuka forest on rugged hill country
103 Piha, parklands, Surrounding Kitekite Falls, Glen Esk Stream and north bank of Stockwell Stream, Kanuka forest on rugged hill country
104 Piha, Piha parklands, West of Anawhata Road to Quarry Track and Mackenzie Stream, Kanuka forest on upper hill country
105 Piha, parklands, Beside Maungaroa Ridge Track and Slipper Gully, Mamangi forest on upper hill country
106 Piha, parklands, North bank of Wekatahi Stream and west back of Otokitoki Stream, Puriri composite forest on rugged hill country
107 Piha- parklands, Small area east of Centennial Stream, Puriri composite forest on upper hill country
108 Piha-Parklands, Small area next junction of Kitekite Falls Track and Piha Valley Track, Puriri composite forest on alluvial flat. upper hill country, Only example in Waitakere Ecological District
109 Piha, parklands, Above Piha Gorge and Centennial Track, Mamaku-broadleaf forest on upper hill country
110 Piha, Parklands, West of Anawhata Road to Centennial Track, following road to Marguerite Track, Mamaku-broadleaf forest on upper hill country