1. Set up a base sketch and measurement rules
Create one reference drawing so every dimension, photograph and uncertainty can be traced to the same source.
- Choose metric or imperial units and use that system throughout the package.
- Draw the house, visible site edges and major fixed elements approximately before adding dimensions.
- Mark north, the measurement date and a fixed reference point such as a main-door threshold.
- Use solid lines for measured facts, dashed lines for approximate positions and a question mark for unknown information.
- Give each sketch page and photograph a simple identifier such as S01, P01 and P02.
Record: A dated base sketch with units, north, a reference point and a legend for measured, approximate and unknown information.
