Updated April 26, 2022
Big projects require big dumpsters and the largest roll-off containers generally stocked by dumpster rental companies are 30 and 40 cubic yarders.
Deciding when to use one over the other is tough in many situations, but we can help sort it out.
- When a 30 or 40 Yard Container Makes Sense
- Factors That Affect a Role in Your Decision
- Advantages of Each Size
- Ideal Container Sizes for Various Projects
- Final Tips and Considerations
When a 30 or 40 Yard Container Makes Sense
Large dumpsters are certainly overkill for light disposal projects, such as a small shed cleanout or disposal of flooring from a single room.
However, it’s the perfect solution for handling bigger jobs, like:
- New construction
- Structural demolition
- Whole-house cleanout
- Major remodeling projects or renovation
- Commercial building cleanouts or renovation
- Large deck demo and disposal (1,000+ sq ft)
- Swimming pool removal
- Major landscaping project
Many dumpster rental companies require heavy debris, such as concrete, be loaded into smaller containers.
Some (not many) rental companies offer larger dump trailers, or 50 cubic yard dumpsters, for disposal of very large amounts of debris, such as a commercial building demo.
If you’re in need of a very large dumpster, call 4-5 rental providers in your area to see if any offer such a large capacity option.
Comparing 30 Yard & 40 Yard Dumpsters
Average Weight Included
30 Yard Dumpster
22 ft x 8 ft x 6 ft
40 Yard Dumpster
22 ft x 8 ft x 8 ft
Factors That Affect Your Decision
There are multiple good reasons why you’d want to go with a 30 yard bin versus a 40 yarder, and vice versa.
The obvious factors that play a role in choosing are price, amount of debris, and availability of the desired container.
- Price: Do you mind paying $50-$100 more to get the 40 yarder?
- Capacity: Do you need the extra 10 cubic yards of volume offered by the 40 yard bin?
- Availability: Does the dumpster provider even offer a 30 yard bin? What about a 40 yarder?
These may be the first questions to ask yourself before calling to get quotes. These are also great questions to ask each dumpster rental company before hiring them.
Now let’s dig deeper into each of the above factors…
While a 40 yard bin typically costs $50 to $100 more than renting a 30 yard box, that doesn’t necessarily mean a 30 yarder is the better, or even the less expensive, option.
Say you rent a 30 yard bin, load it up, and find out that you have another few yards of debris to go. You would then need to rent a 10 or 20 yard dumpster to finish the job at an expense of usually $250 more.
For an extra $50-$100 or so, you could have rented a 40 yard bin in the first place and saved the money (and the hassle).
This is why, when on the fence, renting a larger dumpster is the safest option.
When deciding between a 30 and 40 yard dumpster, choose the 30 yard bin only if you feel you have about 25 cubic yards or less of waste, junk, or debris.
Don’t choose a 30 yarder if you have 30 cubic yards of debris. It may sound counterintuitive, but there’s a good chance you could exceed the loading capacity and/or weight allowance of the container, and that will increase your final bill.
Usually, a 40 yard dumpster is a safe bet for handling the disposal requirements of a demolition, major remodel, or new construction project.
However, large projects may require multiple dumpsters. Since most rental companies do not carry containers larger than 40 cubic yards, that would be your only option.
You’re limited to the dumpster provider’s container inventory. If they don’t carry a 30 or 40 yard bin, your options are obviously limited to what they do have. It may require renting multiple bins to get the job done.
Don’t hesitate to negotiate prices when renting multiple dumpsters from a rental company. Oftentimes when working with a local company, they’ll do what they can to get your business.
Check with at least 2-3 different dumpster service providers to ensure you fully investigate all the options available in your area.
While one dumpster company may not carry a certain container size or they are in short stock, another company may have the container with the capacity you’re looking for.
- 7 Factors That Affect the Cost of a Dumpster Rental
- Dumpster Rental Resource Guide
- Top 6 Ways to Avoid Dumpster Overage Fees
Advantages of Each Size
- Rental fees are slightly lower.
- Shorter sidewalls make it easier to side-load debris, junk, and wastes.
- 30 yard dump trailers (on rubber wheels rather than steel wheels/feet) are more readily available compared to 40 yard dump trailers.
- It may be the largest dumpster offered by your chosen dumpster provider, so it may be the best and largest option by default.
- They provide maximum loading capacity.
- 40 yarders only cost about $50-$100 more to rent compared to a 30 yarder.
- They are a more cost-effective and time-saving choice if you’re on the border with which size to choose.
Ideal Container Sizes for Various Projects
How much fits inside a 30 yard roll-off container? Is a large dumpster necessary to accommodate the debris from my deck removal project?
One cubic yard is equal to a 3 ft x 3 ft x 3 ft space. That’s approximately equivalent to the size of one standard-size kitchen stove.
This visual trick can help when estimating the amount of junk or debris you have to get rid of.
Below, you’ll find some common projects and the right size dumpster for each.
30 Cubic Yard Containers
- Roofing shingle tear-off – up to two layers of shingles on a 2,000 sq ft roof
- Large deck demolition – up to 1,000 sq ft
- Average size kitchen or bathroom renovation
- Whole-home cleanout
- Pole barn or large shed cleanout
40 Cubic Yard Containers
- New home construction
- House or other large demolition projects
- Roofing shingle tear-off – several layers of roofing shingles
- Commercial building cleanouts, demolition, or construction
- Major renovation or whole-home remodeling project
- Hoarding situations
- Dumpster Trailers Are Useful Alternatives to Roll-off Containers
- The Ultimate Guide to Dumpster Sizes
- Solutions to Stop Others from Illegally Dumping Trash in Your Dumpster
Final Tips and Considerations
- 30 and 40 yard bins usually have a similar footprint. An average size container takes up about 22 ft L x 8 ft W of space, so you’d need the same amount of space for placement no matter which one you choose.
- Household junk and wood tends to be much lighter compared to other construction materials, such as roofing debris, drywall, carpeting, tiles, and concrete.
- Dumpster companies may be willing to offer a discount if you load the dumpster with one type of recyclable material (known as a “clean load”) rather than mixed wastes. Recyclables are less expensive to dispose of, so you can usually get a better rate.
- Renting a large dumpster and splitting the costs with a neighbor is a cost-effective strategy.
- Clear out a space for the dumpster in a location that makes it easy to load. It will save time and make the loading process easier. Don’t forget to add about 8 ft of clearance to open the door(s) on the rear of the dumpster.
- Keep the roll-off tarped or covered in some way when not in use. Rain and snow can saturate debris and add weight, possibly pushing you over your weight allowance. It also discourages other people from dumping their trash in your dumpster.
If you’re ready to start your search for local dumpster providers, Hometown can help. We publish licensed and insured dumpster rental companies and by doing a quick search of your zip code, you'll be shown qualified providers that service your area. You can learn more about each company, read verified reviews, and request free quotes from as many providers as you like to ensure you get the best service for the best price.