A west Auckland man has been arrested in Tauranga, over a series of fires in Piha and central Auckland.

The 19-year-old faces three arson charges and one burglary charge which relates to a fire at a local fish and chip store and a large scrub fire adjacent to the store.

He also faces a third arson charge over a fire in central Auckland.

The man is expected to appear in Tauranga District Court tomorrow, and police won't rule out laying further charges.

Piha residents have been left on edge by at least 15 suspicious fires in the west Auckland costal area in just two weeks.

One fire in the early hours of Sunday morning severely damaged a seaside fish and chip shop.