West Australian police allege the teenager was seen acting suspiciously in the area the fire broke out about 4.15pm on Monday.
He has been charged with lighting a fire likely to cause damage and injury and is due to appear in the Midland Magistrates Court on January 13.
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The fire moved quickly through Whiteman Park, reaching the back fences of some properties, however, no homes were damaged.
The blaze forced road closures and traffic chaos in the suburbs of Caversham, Whiteman and Beechboro.
Arson squad attended the scene and deemed the fire to be deliberately lit.
Lancelin bushfire contained
Another large bushfire burning near Lancelin, about 120km north of Perth, has been contained.
The fire started in the Moore River National Park on Monday afternoon.
Driven by east-southeast winds, the blaze threatened homes in Lancelin and Ledge Point, and Ocean Farm and Seaview Park estates.
The fire ripped through about 5,700 hectares of bush and farmland.
Water bombers and a helicopter helped strengthen containment lines early on Tuesday morning as about 75 firefighters battled the blaze.
The Department of Environment and Conservation (DEC) on Tuesday said the fire was contained but not under control and crews would remain in the area to prevent any flare-ups.
Residents should remain alert
Residents have been warned to stay alert, with temperatures around 40 degrees forecast for the area accompanied by easterly winds gusting to 48km/h.
A relocation centre has been set up by the Shire of Gingin at the Guilderton Sports Centre and Community Hall.
Drivers have been asked to avoid Mimegarra Road, Orange Springs Road, Sappers Road, Nilgen Road and Cowalla Road.
The public have been advised to call 1300 657 209, visit www.fesa.wa.gov.au, www.dec.wa.gov.au or listen to local radio news bulletins.
