What Size Bin Do I Actually Need? A Homeowner's Guide
The single most common mistake is renting too small. Here is how to size a bin for your project without paying for air.
- Written by
- DumpHelp Editorial Team
- Reviewed by
- Canadian waste-hauling professionals in the DumpHelp network
- Last reviewed
Estimate your debris in pickup-truck loads, then add about 40% for packing loss. A bathroom gut usually fits a 10-yard; a kitchen tear-out is typically a 20-yard; roofing over ~20 squares often needs a 30-yard or a planned swap. For concrete or dirt, weight caps force a low-boy — often 10 yards or less — not a tall mixed roll-off filled to the rim.
The single most common mistake homeowners make is renting a bin that is too small — and paying twice when they have to swap it. A 10-yard bin holds roughly the volume of three pickup truck loads, which sounds like a lot until you factor in that debris does not stack neatly. Drywall, lumber, and shingles all pack differently.
A safe rule of thumb: estimate your debris in pickup loads, then add 40% for compaction loss. A single-bathroom gut usually fits a 10-yard. A full kitchen tear-out is almost always a 20-yard. Roofing over 20 squares needs a 30-yard.
For concrete or heavy fill, size drops dramatically — a 10-yard low-boy is often the largest a truck will legally haul because of weight, not volume.
How to choose the right dumpster size
A homeowner sizing checklist for Canadian 10–40 yard roll-offs.
- 1List the project rooms
Write down every area contributing debris (bathroom, kitchen, roof, garage) so you do not under-count volume.
- 2Convert to pickup loads
Estimate how many pickup-truck loads of debris you will create, then add ~40% for awkward packing.
- 3Match to a standard size
10 yd ≈ 3 pickups, 14 yd ≈ 4, 20 yd ≈ 6, 30 yd ≈ 9, 40 yd ≈ 12 — then adjust for dense materials.
- 4Separate heavy streams
Concrete, dirt, and asphalt need a weighed low-boy. Keep them out of mixed reno bins.
- 5Confirm driveway fit
If the pad is short or the street is tight, prefer a smaller can with a mid-job swap over a 40-yard that will not fit.
FAQs
What size dumpster for a bathroom remodel?
Most single-bathroom guts fit a 10-yard bin. Add space if you are also removing tile substrate, a tub, and hallway flooring in the same load.
What size dumpster for a kitchen renovation?
A full kitchen tear-out is almost always a 20-yard. Cabinets, counters, and drywall pack poorly — size up rather than paying for an emergency swap.
How do I size a roofing tear-off bin?
Shingles are dense. Small bungalows often work in a 20-yard; larger or multi-layer roofs commonly need a 30-yard with a same-day or next-day swap planned.
Why is a concrete bin smaller?
Concrete hits legal axle weight long before the bin looks full. Haulers send low-boy / clean-fill containers priced by weight, often 10 yards or less.