Which dumpster size do you actually need?

Volume is the number everybody shops on. Weight is the number that ruins the rental. Here is how to think about both.

The five sizes

Size	Dimensions (approx.)	Pickup loads	Typical use
10 yard	12' × 8' × 3.5'	3	Concrete, dirt, shingles, brick
12 yard	16' × 8' × 4'	4–5	Single-room remodel, garage clean-out
20 yard	22' × 8' × 4.5'	6	Whole-house clean-out, roof tear-off, flooring
30 yard	22' × 8' × 6'	9	New construction, large demo, multi-room reno
40 yard	22' × 8' × 8'	12	Demolition, commercial construction, major clean-outs

Weight is the real constraint

Every rental includes a tonnage allowance, and dense material blows through it long before the box looks full.

A 10 yard container filled with concrete can weigh more than a 30 yard filled with furniture and drywall. That is why heavy material goes in a small box — not because you have less of it, but because the truck has a legal axle limit.

Heavy material: concrete, brick, dirt, sod, gravel, roofing shingles, plaster, tile.

Light material: furniture, cabinetry, drywall, carpet, general household clean-out, yard trimmings, packaging.

Sizing by project

Roof tear-off: 10 or 20 yard depending on square footage. A typical 2,000 sq ft asphalt shingle roof fills a 20 yard by volume but may hit weight limits first — ask about the tonnage allowance before you book.

Kitchen remodel: 12 yard covers cabinets, countertops, appliances, and flooring for most kitchens. Go 20 if you are also taking out tile.

Whole-house clean-out: 20 yard. This is our most-rented size for a reason.

Estate or hoarding clean-out: 30 yard, and plan on a swap-out. These consistently run larger than anyone expects. If the whole property is going, start with a 40.

New construction or addition: 30 yard with scheduled swaps. Framing and finish-out generate steady volume, not one big dump.

Demolition: 40 yard. Tear-downs produce mixed heavy-and-bulky debris that fills the biggest box fast — and it carries the largest tonnage allowance.

What cannot go in

Tires, batteries, paint, solvents, oil, chemicals, appliances containing refrigerant, medical waste, and anything flammable — the full list is here. Contaminated loads get charged separately because the landfill charges us separately.

When in doubt, ask before it goes in the box. It is a thirty-second phone call versus a line item you did not plan for.

Sizing up vs. swapping out

If you are genuinely between two sizes, go one size up. A single swap-out costs more than the difference between a 12 and a 20, and the bigger box gives you room for the stuff you find in the back of the garage.

The exception is heavy material — there, going bigger buys you nothing but a container you cannot legally fill.