01
Draw the joint
Locate the shared wall and identify the rooms immediately on either side. Pay particular attention to bedrooms, service runs and everyday noise.
02
Follow both front doors
Trace the routes of the two households at the same time of day. Consider arriving with groceries, receiving a delivery and taking bins to the street.
03
Look back at the house
Test the roofline and exterior materials against the existing silhouette. An elevation from the garden can reveal mismatches that a floor plan misses.