Teens charged over Hobart house fires

Three teenagers have been charged over two house fires which were lit within 48 hours of each other on Hobart's outskirts, causing $200,000 of damage.

The youths aged 15, 17 and 18 are accused of lighting the fires in Fairfax Terrace at New Norfolk, on Friday and Sunday morning.

Both properties were vacant at the time and no one was injured, police said.