The requested Master bedroom addition could have been located on a new second floor, but making room for new stairs and adding to the bulk of what was a typical but cozy post-war suburban house was ruled out as an option in favor of placing it in the rear yard. The presence of an existing mature sycamore tree suggested wrapping the new addition around it, thus creating a nicely scaled courtyard between it and the existing house. The decision was made to have it be a pavilion. Everything would stay on one level.