Kitchen bump out cost

DH and I are looking at a house right now that we absolutely love. But realistically, the kitchen needs to be bumped out another 5 feet deep to add on to the current kitchen at the back of the house. We've seen a TON of houses in the neighborhood do this but we're very concerned about the cost of doing this add-on. It would be approximately 75 square feet of addition to the house.

Has anyone done this before or have any idea what it would cost?

Re: Kitchen bump out cost

We didn't end up doing it bc we didn't want to deal with permits and tax ramifications, but we were quoted $9000 for a 2 ft x 7 ft kitchen bump out.