The renovations the Johnsons were making on the house were getting too expensive. The Johnsons wanted the very best, but they didn't have enough money to pay for it. Their architect came to speak with them. "You have some great ideas, but we're going to need to cut corners. We may have to change some of the original plans to save money; otherwise, we won't be able to finish the house."

What does 'cut corners' mean in the sentence?