Owning an older property certainly comes with its fair share of character, but the sudden slowdown of multiple drains is a major warning sign that your main sewer lateral might be reaching its limit. In my own vintage home, I experienced this exact same widespread sluggishness, and it turned out that decades of mineral scale and old tree roots had nearly choked off the primary exit pipe. Since you have already attempted the basic fixes without success, it is very likely that the obstruction is far beyond the reach of a standard hardware store snake. To get a clear picture of what you are dealing with, it is worth looking into how much video inspection of sewer lines costs in Medina so you can stop guessing and start targeting the actual blockage. This type of diagnostic tool is essential for older homes because it reveals whether you have a simple clog or more serious structural decay like a collapsed section. Taking this step early saved me from a catastrophic backup and allowed me to address the repairs on my own timeline rather than in an emergency. Getting that visual proof is the best way to protect your home’s integrity.