The general rule of thumb is that prefab construction is cheaper than stick-built homes by an average of 10 to 25 percent. ... Preparing the site for construction can be either relatively minor or very expensive depending on the landscape; prefab packages also usually don't include the foundation.

Is it worth buying a prefab house?

One of the benefits of prefab homes is that they tend to be highly energy efficient. Their tight seams and state-of-the-art windows keep heat in and reduce your energy bills in the process. As a bonus, modular homes' tight construction has earned them a reputation for being able to withstand natural disasters.

Are prefab homes less expensive?

Costs of prefabs are typically cheaper than stick-built homes by an average of 10% to 20%. Faster Than Traditional Construction. Generally, it takes one to four months longer to build a traditional home than to construct a prefab.