Hi @roger-wong1982 welcome to the forum.

I don’t think there is an average because there are soooo many variable in what you have described.

Demolish
1 – What is the house built of?
2 – Is there any asbestos?
3 – Is there a lot of concrete to dig up?
4 – How easy is access for machinery and trucks?

Subdiv
1 – Fees are highly council…[Read more]