When building a home from a kit you would usually follow these steps:
The steps in building a home will usually cover the following:
 Pour the foundation. This is done professionally. Install the floor joints
 Install the wall panels. Cut out openings for windows and doors
 Install windows and door. You can do this yourself, or you can have the people from the hardware store install them for you.
 Install the roof system
 Attach insulation and siding.

If you are considering purchasing a home building kit, it's important to carefully weigh the pros and cons of them.

Pros
The following are some of the advantages of a home building kit:
 Save money. Perhaps the biggest reason people opt to get a home building kit is to save money on building a home. With a kit, you don't have to pay for contractor and builder fees, and labor costs are virtually nonexistent as you are doing most of the work yourself.
 Variety. Home building kits offer a great deal of variety if you want to build your own home. Floor plans and kits come in the form of cap cods, traditional homes, colonial styles, two story homes, ranch homes, manufactured homes, log cabins, and more.
 Control. Purchasing a home building kit gives you, not a builder or contractor, complete control over the building of your home, including labor and start and completion dates.
 Save time. When done correctly, some home building kits allow you to build your own home in as little as a week or two. Having a home built, on the other hand, can take months.

Cons
The following are some of the disadvantages that come with using a home building kit.
 Lack of experience. While home building kits are designed with the inexperienced builder in mind, a complete lack of knowledge or access to someone who has it can end up causing problems if things aren't put together correctly. It can also be expensive to fix.
 Time-consuming. If you are working a full-time job, you won't have a lot of time to devote to building your new home. For that reason, it could take longer than anticipated to build your home from a kit.

Home building kits can be a less expensive alternative to building your own home and controlling all aspects of the building process. However, they can also be costly and troublesome if you're not fully aware of what you're getting into. Be sure to carefully consider the pros and cons of building a home from a home-building kit before you purchase one.