The patio homes I am familiar with in the Myrtle Beach area have a small patio on the side of the home, under 2000 square feet have, no rear exit and very limited yard space. Many of them are also sold as maintenance free.
Patio homes are also detached, single-family homes, but with smaller yards. These compact backyards are perfect for creating patios, giving rise to the name, patio homes. A patio home is often a low maintenence detached home that is built upon a concrete slab versus a crawl space, and they usually have a fenced patio in lieu of a yard.
If you are hoping to buy a house, you likely have a budget in mind. Hopefully, that budget includes fees that come with the process, not just the purchase price. The good news for buyers is that they aren't directly responsible for paying their agent. Agent fees usually fall on the seller.