as mentioned earlier, the initial budget is based on late last year pricing and not based on 3 layered wall. Somehow the project was put on hold and only kick start about a month back and we had an price increase on material + the changes of 3 layered wall..

We actually use the same contractor whom did our front car pourche and extension of masterbedroom for double story house in TTDI, 4 years back which only cost us about 35K for material and 20K labor.If we didnt go with this contractor, other contractor did quoted us close to 1 mil for construction only.

More is better, and make sure get 11 core armored cable up to the gate.

Also make a on/off switch inside the house so you can switch off the outdoor socket when not use. You don't want postman come in charge the phone

And get outdoor / weather proof power socket.