Alastair Macdonald (surveyor)

Alastair Macdonald is someone who helps people figure out how much a piece of land, a building or a house is worth. He looks at lots of different things like how big it is, what kind of shape it's in, if it has any problems and what other similar things are selling for in the area. Just like when you play with blocks, Alastair is putting all the pieces together to figure out how much everything is worth.