This question was asked about a year ago, but never got answered, so I thought that I'd re-surface it.
I was wondering you who live/lived there, how would describe the total income of NOK 700k per annum? (impossible, budget, average, high, incredible?) We are a couple. and with such a salary, what could be a reasonable rental per month which leaves enough money for the rest of things. I have no idea about it and would be helpful if you can give me some estimation.
Whether your income will be enough to live in Norway depends entirely on the lifestyle you intend to lead. But the cost of living in Norway is notoriously high. Perhaps have a look at Cost of Living in Norway and Accommodation in Norway. These pages might give you some information that will help you decide whether your salary is enough.
Best,
Candice