We bought a house several years ago from a couple who had it built, raised their kids, and lived in it for over 40 years, with virtually no updates in the previous 15+ years.
They were in the early 70's at that point downsizing significantly, ended up leaving much of the furniture, cabinetry, etc. There was nothing worth saving in our opinions (they may have thought differently?) and we knew we were going to be doing a serious full reno over many years.
I called Habitat for Humanity. While one division of Habitat takes mostly construction material (toilets, doors, windows, etc), their other divisions, here in the northeast it is called Restore, takes furniture, area rugs, lamps, wall hangings, and almost any home furnishing. Scheduled about 2 weeks in advance and three guys came with a box truck, did all the moving, and eventually did three trips taking pretty much anything and everything. They won't remove doors and light fixtures, but they will take that stuff if you/someone does that labor.
They then sign a slip/receipt for you and you put an amount in for the approximate value, and you can take it as a charitable donation write-off.
If that is available in your area, I don't know how you can get a better deal?
Then if you contact any guy who does metal recycling, I'm sure they will come and strip any worthwhile metal (copper piping, aluminum siding, etc.).
