"How big a dumpster do I need?" is the #1 question we get from customers. The answer matters — getting it wrong means either paying for space you don't use, or paying for two dumpsters when one would have done it.
Here's a complete breakdown of the two most popular residential dumpster sizes — the 15-yard and the 20-yard — so you can pick the right one with confidence.
Quick Comparison Table
15-Yard:
- Dimensions: 14' L × 8' W × 4' H
- Holds: ~4-5 pickup truck loads
- Weight Limit: 2 tons (4,000 lbs)
- Bison Bin Co. Price: $385 flat
20-Yard:
- Dimensions: 16' L × 8' W × 4.5' H
- Holds: ~6 pickup truck loads
- Weight Limit: 3 tons (6,000 lbs)
- Bison Bin Co. Price: $435 flat
When to Pick the 15-Yard
The 15-yard is the right call for SMALLER, contained projects. It's the most popular size for residential garage and basement cleanouts because it fits on virtually any standard driveway and doesn't feel like overkill.
Best for:
- Standard two-car garage cleanout
- Single-room remodel (kitchen OR bathroom, not both)
- Basement decluttering
- Small roofing job (up to ~15 squares of asphalt shingles)
- Flooring removal in 1-2 rooms
- Decluttering before a move
When to Pick the 20-Yard
The 20-yard is the right call for BIGGER projects, or when you're not 100% sure how much you'll generate. For an extra $50, you get 33% more space and an extra ton of weight capacity. Most contractors default to the 20-yard for this reason.
Best for:
- Whole-home cleanouts
- Estate cleanouts
- Multi-room remodels
- Roof tear-offs (up to ~30 squares)
- Major landscaping projects (large fence, deck, sod)
- Anything where you're not sure if 15 yards is enough
The Driveway Question
Both sizes fit on a standard residential driveway, but the 20-yard is 2 feet longer than the 15. Before you book:
- Measure your driveway from the edge of the street to the garage
- Make sure you have at least 18 feet of clear space for a 20-yard
- Make sure you have at least 16 feet of clear space for a 15-yard
- Account for tree branches above the drop spot — both bins need ~14 feet of overhead clearance
Weight: The Sneaky Variable
Here's a secret most people don't realize: WEIGHT, not VOLUME, is often what limits your dumpster usage.
If you're filling the dumpster with normal household junk (furniture, mattresses, boxes, clothes, lumber), you'll usually fill the volume before you hit the weight limit.
BUT — if you're hauling roofing tear-off, drywall, tile, concrete, or dirt, you'll hit the weight limit way before the dumpster looks "full."
When in Doubt, Go Bigger
If you're truly torn between the two sizes, get the 20-yard. The extra $50 is cheaper than:
- A second dumpster delivery if the 15 fills up
- Overage fees if you exceed the weight limit
- Stress about whether everything will fit
Worst case: you don't fill the 20-yard. You still got delivery, pickup, and disposal handled.