A shared patio refers to a common outdoor space that is used and enjoyed by multiple people who live or work in the same building or community. Full definition
The two cottages share a patio with a fire pit, soaking tub for two, and a deck with table and chairs. (carnerosresort.com)
Oh how I wish I had a covered porch but I'll share my patio with you. (findinghomefarms.com)
These three rooms also share a patio off the back of the room, which leads to the swimming pool, jacuzzi, gardens, and gazebo, all with a spectacular view of the Moat Mountain Range. (stonehurstmanor.com)