Large Dumpster Rental: When Is a 30 Yard or 40 Yard Dumpster the Best Choice?

Large dumpsters - when to choose a 30 or 40 yard bin

Big projects require big dumpsters! 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.

Related resources you may find helpful:

When a 30 or 40 yard container makes sense:

House demolition and dumpster

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:

  • 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. 10 yard bins are common due to the weight of the debris. A 30 or 40 yard bin filled with concrete debris is oftentimes too heavy for the roll-off truck to pick up and haul away.

LEARN MORE: The “Fine Print” when Renting a Dumpster

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.

Quick comparison:



Average weight incl.

Average cost

30 yard dumpster

22 ft. x  8 ft. x 6 ft.

2 - 8 tons

$400 - $500

40 yard dumpster

22 ft. x  8 ft. x 8 ft.

4 - 8 tons


Factors that play a role in making the right choice:

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 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 topics to bring up during your phone conversation with the dumpster company.

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.

Here’s why…

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 $200 more. For an extra $50 or so, you could have rented a 40 yard bin in the first place and saved the money (and the hassle).

This is precisely why you should always overestimate the amount of debris, junk, or waste you plan to dispose of in your dumpster.


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; but 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 (all are rented out), another company may have the capacity you’re looking for.

Let’s take a look at the advantages of each container size:

30 yarder

Size of a 30 yard dumpster example
  • 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 (largest) option by default.

40 yarder

40 yard dumpster dimensions
  • Maximum loading capacity
  • Generally only costs about $50 more to rent compared to a 30 yarder
  • More cost-effective and time-saving choice if you’re on the border with which size to choose. Why? Going over the weight/loading capacity of a 30 yard bin can result in overage charges or having to rent a second bin.

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 (mainly trash/junk, not a lot of bulky furniture)
  • 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 companies are very good at estimating the amount of debris various projects will generate. They are an excellent source of information in this sense, and a reputable company will help you choose the right container for the job. Be sure to take advantage of their vast knowledge.
New construction and dumpster

Final tips and considerations:

Below are a few more bits of info that may help.

  • 30 and 40 yard bins usually have a similar footprint. An average size container takes up about 22 ft. x 8 ft. of space, so you’d need the same amount of space (L x W) 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, head over to the Hometown Dumpster Rental homepage and do a quick search for your city. Otherwise, you can learn more by checking out the resources below.