As spring selling approaches, we thought it would be worth taking a moment to review some of the most notable design trends of 2013 and tell you what we think are some of the most enduring--and most likely to snag buyers. Long-time-coming ideas like smart density are a reflection of the urgent need for walkability and the rising cost of land. If there’s any question about the kitchen still being king, features like the super island will tell you that the answer is a resounding yes--this is a trend. Oversized showers and wet rooms don’t just speak to the current demand for a spa-like bath. They’re an indication that we’re getting smarter about the need for more stylish universal design. This roundup is by no means exhaustive, so please weigh in and tell us what we missed. Most of all, Happy Spring (well, less than a month and counting).