Mother's Day is the rule of thumb around here. Even that is optimistic some years...
Very nice! I believe my model was estimated at 24 hours to complete. A friend and I were able to finish in roughly 16. Then spent a few lonely hours re-staining the set.
Came out very nice, and built it directly on grass, with 6 stakes holding it into the ground. I just need to clear the grass inside the downstairs playlet, and come up with a large rubber mat to insert.
You excavation is filled with rubber chips?