40 Yard Dumpster Rental in Concord, CA
Short answer: a 40 yard roll-off costs $900 with 4 tons included and measures 20 by 7.5 by 7.5 feet. It holds roughly 200 garbage bags or 12 pickup loads, and BBP Dumpster delivers it to commercial sites and large demolition jobs across the Bay Area.
Everything about this container is a volume argument. It carries only one ton more than the 30 yard, but ten more cubic yards, so it pays when the thing ending your loads is space rather than weight. Framing, cabinetry, office furniture and cleared vegetation all fill it long before the tonnage matters.
The real economics are about labour. A crew standing around waiting for a swap costs more per hour than the $135 step up from a 30, which is why contractors book this size on running sites even when a smaller one would technically hold the debris.
Access Decides This Size, Not Debris
Twenty feet of container plus the truck needs about 60 feet of straight ground. That is the constraint that rules the 40 out of most residential driveways in Concord and Walnut Creek, regardless of what is going in it.
We ask about the approach, the gate width and any overhead before dispatching, because a truck that arrives and cannot place the container still costs a trip. When the site is tight, two 20 yard deliveries reach a similar total price and always fit, and for heavy single-material debris the 10 yard or 15 yard is the better tool. The full list of what we haul is on the services page.
What Not to Put in It
Dense material is the wrong fit at this size. Concrete, dirt, tile and plaster reach four tons with the container barely a third full, and the space you paid for goes unused. Those loads belong in the flat rate 10 yard, where nothing is weighed at all.
The refusal list is the same as every container: no hazardous material, no tires, no batteries, nothing holding refrigerant. At this volume a refused load is expensive, so the material is confirmed before the truck is sent.
Where Four Tons of Debris Actually Ends Up
A full 40 yard is sorted and routed to whichever licensed facility handles that material best, following the standards set by CalRecycle, California’s statewide waste diversion agency. Commercial demolition and large residential teardown loads make up most of what fills this size, and the scale ticket that comes back with the invoice is the same paperwork a job site inspector would ask to see.
Commercial Work and Swaps
Most 40 yard rentals here run on a swap schedule rather than a single haul. You call, we pull the full container and drop an empty on the same visit. Rentals run from 1 to 21 days and swaps are arranged on request. Read about commercial service, or see the whole range on the dumpster sizes page.
RP
Rafael Pires, OwnerAccess requirements measured against the 40 yard containers dispatched from 4918 Clayton Rd. Last reviewed September 2026.