This is another great idea for saving money. Often, buildings scheduled for demolition will first have all salvageable parts removed. They find their way to salvage stores where they are sold at deep discounts, or to architectural antiques stores, where they cost you an arm and a leg. You can find doors, windows, cabinet hardware, door knobs, light fixtures, and plumbing fixtures, to name a few categories.
Check your sizes, just like shopping online. Inspect everything very carefully for damage, and make sure all working parts actually work. Be especially careful with windows and doors, look for rotten wood, double check all dimensions, and do not buy anything that has to be stripped. I speak from personal experience, having stripped far more woodwork than I care to think about. It always turns out to be a bigger job than you think.
On one flip, I stripped several layers of paint off once-beautiful oak, walnut, and maple. With the end in sight, I ran up against the final layer. It was antique milk paint. That type of paint laughs at ordinary strippers. At the time, I did not know that you could buy a specialized solvent for milk paint. I had no choice but to repaint the woodwork, something I could have done before all that stripping. Yes, the surfaces look much better because I did strip all the old paint. On the other hand, this is one of those areas like my silk covered walls. Do not waste money stripping down to original wood and then repainting, because no one does it. Your efforts will not be rewarded with a higher sales price, a better comparison with other home choices on the market, or a faster sale.
On the whole, though, builders’ salvage stores can represent excellent bargains, saving you 60% to 90% off retail prices for similar items.