A basement cleanout in Kern County puts one thing on the table before any other: below-grade storage where anything that ever got wet still weighs several times its dry weight. This kind of job changes as it goes, so the debris mix on day one rarely matches the debris mix on day three. Leave room to size up instead of guessing the exact fit. Nail down what counts as a prohibited item on this particular order. The list varies by hauler, and a mattress or freezer left on top can stall the whole pickup.
The choice you are actually making in Lamont comes down to this: water history turns a volume job into a weight job without changing how the pile looks. Kern County's stretch of dry summers with winter rain and a long fire season is exactly when trucks get scarce, so the calendar, not the phone, decides how fast you get one. pre-war bungalows through 1960s-70s slab tracts construction is common across Kern County, and that vintage, more than the room count, is what a hauler expects to find in the debris.
15 or 20 yards is the going size for basement cleanout across Lamont, set by what the debris weighs rather than what the project looked like. This task usually falls to homeowners, in Lamont same as anywhere else. Ask a hauler about Lamont and you're really asking about their Kern County route, since that's where the truck is coming from. A hauler serving Lamont is usually based out of Kern County, and the distance between the two is part of what's being priced. Keep the container on the driveway and no permit enters the picture; put it at the curb and city encroachment permits, CalRecycle diversion reporting does. Keep kids and pets away from the container once it's down. The edges are sharper than they look and debris shifts without warning.