Hi and welcome to VT!
I assume you're going to the street called Furulia in Kristiansand? According to google street-view that's a small street in a residential area. I would take the airport-bus to the town center. At the bus station you could ask if there's any public transport to Furulia. If not take a taxi.
Sorry I don't know Kristiansand well enough to give a specific answer.
Be the first to rate this answer!