Issues I can think of
1. Damage to my house during demolition? So looking at putting cameras up around the outside of house (was planning to do it anyway)
2. Rodents/Insects leaving their house to mine? Looking at putting some rat medicine and insecticide around the boundary
3. Security with lots of people coming through and making sure work doesn't start too early or go too late? Cameras as per point 1
Any other issues or suggestions especially with the rodent/insect stuff as not very experienced with it. We do have a 1 year old as well so there may be issues associated with that as well. We already have a monitored alarm service inside and we are in Eastern suburbs of Melbourne
You sound way too paranoid