When selecting a deep-seat sofa for your urban outdoor space, comfort is paramount. The most comfortable seating depth typically falls within the range of 22 to 26 inches (56 to 66 cm). This depth allows users to sit back fully with their backs against the cushions while their knees are comfortably bent at the edge of the seat, without feeling like they are sinking in too deeply or struggling to get up.
A depth of less than 22 inches may feel too shallow and unsupportive, failing to provide the relaxed, lounge-like experience expected from deep seating. Conversely, a depth exceeding 26 inches can become impractical, requiring an abundance of throw pillows for lower back support and making it difficult for shorter individuals to sit back comfortably with their feet touching the ground.
The optimal depth ensures proper ergonomic support for the lower back and thighs, promoting relaxation for extended periods. For urban settings like balconies, rooftops, or compact patios, a depth around 24 inches often offers the best balance between luxurious comfort and space efficiency. Always consider the sofa's back cushion thickness and the user's average height when making the final choice, as these factors influence the perceived and functional depth. Ultimately, the right depth transforms your outdoor area into a cozy, inviting extension of your living space.