| Ocean-front and first-ridge | Manly, Queenscliff, Freshwater, Curl Curl, North Curl Curl, Collaroy, Mona Vale, Newport, Bilgola Beach, Avalon Beach, Whale Beach and Palm Beach | salt film on glass within a fortnight, rust-run from every fixing, and black cyanobacteria on the shaded south and east walls | glass every 6 to 8 weeks, soft wash every 6 to 9 months, hard surfaces annually |
| Lagoon and estuary | Dee Why, Narrabeen, North Narrabeen and Warriewood | green algae and black mould on the shaded elevations, lichen on stone and pavers, and moss in any joint that stays damp | soft wash every 9 to 12 months, stone and paving every 12 months, glass quarterly |
| Pittwater waterfront and slopes | Bayview, Church Point and Clareville | tannin and leaf-litter staining, lichen and moss on sandstone, green film on timber and pool surrounds, and mould under deep eaves | soft wash every 12 months, stone and timber every 12 months, gutters twice a year |
| Plateau and bushland edge | Elanora Heights, Ingleside, Terrey Hills, Duffys Forest, Belrose, Davidson, Frenchs Forest, Forestville and Killarney Heights | gutters full of eucalypt leaf and bark, moss and lichen on shaded roofs, paving and tennis courts, and red clay staining on concrete after storms | gutters before bushfire season and again after autumn leaf fall, paving and courts annually, soft wash every 18 to 24 months |
| Harbourside Middle Harbour | Fairlight, Balgowlah Heights, Clontarf, Seaforth and North Balgowlah | mould and algae on render and painted brick, lichen on sandstone retaining walls, and tannin staining from the tree canopy over paths and driveways | soft wash every 12 months, glass quarterly, stone and paving annually |
| Hillside and village | Balgowlah, Cromer, Beacon Hill, Allambie Heights, Collaroy Plateau and Bilgola Plateau | salt haze on glass that faces the ocean, mould on the shaded render, and dull, lichen-spotted concrete driveways and paths | glass quarterly, soft wash every 12 months, driveways and paths annually |