The standard lens that comes with this camera is more than sufficient.

It's not going to be less than $100, though:Build Trail Camera

If you are worried, Comcast offers an alarm, camera, cable phone, & internet bundle.

Doing a actual walkthrough using info from a camera is many years away, and not even what I think would be the ultimate desired effect.

No fence, no utilities, maybe cameras. 

I had one of those back pressure sewer valves put in $500 installed.It made a BIG difference as the insurance co didn't want to include coverage as the home had a claim in the past (b4 I owned it, & the city sewer backup was not the fault of the home owner).In my area if it happens you're responsible for the temp accommodation of the tenant(s) until it's cleaned up.Since then the only blockage we had was viewed via camera & found to be a city clay sewer pipe collapse.

Although they have violated numerous clauses, (including the final straw of moving in a nanny who is not on the lease nor did they ask for permission) I nicely offered to mutually part ways with them.  

Throw some dummy cameras on that sucker?

I am currently putting up external cameras, have signs asking guests to respect quiet hours, have ordered a decibel monitoring device, and have visited with the police to explain I do not cater to parties.   

I once read an article about a young lady who had a house in the Boston-Edison area of Detroit, and she had so much theft that she put up surveillance cameras.