Can be small, like making a phone call to seller, making an email offer and so on.

Thanks, Hi Carl let's schedule a call so I can get more details.  

-a good builder should be able to advise you on whether a house can even be built there; I heard a recent story about a person who got a so called "good deal" on 2 acres of land- only to find out that they could not even build a shack, let alone a house!

Give him a call and see if he can help you.

Had a person last year call about near Newark NJ. 

Of the 650k+ leads this past year our clients pulled in, 213,950 are from SEO (this doesn't include phone call leads, which is usually from 30-50% of leads on a site). 

If it's over $500 they call me.

Found on MLS and called seller direct after speaking with his agent briefly.

I guess the area is still "up and coming" but you get 2fams now in the 1M pricerange so idk who would call that up and coming at this point pricewise.

Can likely call any HVAC company and get a quote over the phone for sq ft of house.