Please google the topic of “downsizing + estate sales”, and you’ll soon find out that most normal household stuff, including once-expensive furniture and artwork, have little resale value beyond thrift-store pricing. Be sure to educate yourself, so you’re ready to do a serious purge. Thrift stores will take clean, working, saleable stuff, and often not old appliances, or big tvs, or mattresses, or tv cabinets, and will even eye-ball inspect your furniture before loading it on truck. You may want to get a dumpster delivered, or hire junk-truck to haul-away the unwanted stuff; our suburban garbage service charges extra for every item that doesn’t fit in our two Rubbermaid garbage containers.
My uncle didn’t want to share my aunt’s (and my grandmother’s) chinaware and figurines with his own kids, thinking he was going to earn $$$$ at his upscale professional house-sale. Uncle was pleased by the prices, and shocked by how little sold. Worse, contract specified sale-manager would “clean-out house at no cost”, which really meant that 80% of household contents went to sales-manager as no-cost stock in its off-site resale store. Yes, perfectly legal, and iften happens, along with kickback to referring real estate agent.
Best arrangement: let the kids pick what they’d like, now or never, from what’s not coming to your new home, then let friends and family pick, then call a non-profit resale shop with pick-up service to retrieve what’s in good saleable condition, and the rest goes into dumpster or junk-truck service. Yes, it’s hard to dismantle a home.
That said, we recently sold some high-quality like-new recognizable designer large furniture items on Craigslist, priced at fraction of retail price for items still in current manufacturer line, and could write a chapter-long story about each experience. Many buyers on Craigslist are flakes. Think hard before listing, worse if items are free, in our experience - lots of (sometimes relatively intimidating) resellers out there trying to aggressively procure merchandise for free who you don’t want to meet at your home alone.