UPDATED: May 23, 2023
If you’re looking for alternative housing beyond stick-built or “traditional” homes, you may have come across the term “prefabricated” or “prefab” house. This style of home has been around for many years and is often billed as a cheaper, more sustainable alternative to traditional housing – but what is a prefab home?
Let’s look at what prefabricated homes are, the different types available and whether this type of housing may be the right choice for you.
A prefab home is a house built piece by piece at an off-site location. The pieces may be delivered to a home site and assembled there or assembled at an off-site location and transported fully constructed to a homeowner’s lot.
Prefab homes are often more affordable and eco-friendly than stick-built homes and can be built much faster, which can make them an appealing option for people trying to decide whether to buy or build a house.
“Prefab house” is a blanket term that refers to a few different types of prebuilt houses, namely modular and manufactured houses. Let’s dive into the different types of prefab homes you may come across and discuss some of their differences and similarities.
Modular houses are prefabricated homes that are created piece by piece in a climate-controlled location and then transported to a homeowner’s property, where they’re assembled and built on a permanent foundation.
Because they’re built on a permanent foundation, modular homes are often indistinguishable from standard single-family homes and may be considered single-family homes by lenders. Modular homes are a popular starter home option because they offer a variety of styles and floor plans, and owners can add on modular home additions as their family or needs grow.
Modular homes are built to strict standards, and like traditional stick-built houses, can appreciate in value over time. Because they’re often treated like traditional homes after construction, modular homes tend to be easier to finance than other prefab homes.
Manufactured houses are a type of prefab home you might know as a mobile home. Manufactured homes were known as mobile homes until 1976 when the Department of Housing and Urban Development (HUD) issued new regulations for mobile home safety standards and construction codes. Any “mobile home” built after 1976 is legally referred to as a manufactured home because it meets the new guidelines.
Manufactured homes are built on a permanent chassis in a factory and transported to a build site. The main differences between manufactured homes and other prefab homes are that manufactured homes don’t rest on a permanent foundation, so they aren’t considered real property. If a manufactured home is put on a permanent foundation and attached to land as real property, that may help expand your financing options. And the other difference is that manufactured homes are built to meet strict HUD standards for safety and construction.
A kit home is a type of prefab house that is purchased as a set of parts and then assembled by the home buyer. Kit homes were famously popularized by the Sears, Roebuck and Co. catalog. From 1908 to 1940, customers ordered houses from the models displayed in the catalogs. The kit of parts was typically transported to the customer by rail car.
Kit houses still exist today as mail-order prefab homes and can be purchased from a variety of builders and shipped to your property. Many tiny homes are built from modern home kits.
Panelized homes are similar to modular homes. They are built in sections at an off-site location or factory and then shipped to a property to be assembled. Modular homes are essentially constructed one room at a time by putting together premade “modules.” Panelized homes come in the form of walls or panels that must be put up like a stick-built home.
Some panelized homes have doors and windows already installed, while others may require additional parts to be added on-site. Like modular homes, once fully constructed, these homes are often indistinguishable from traditional stick-built homes.
Structural insulated panel homes, or SIP homes, are similar to panelized homes – but with one key difference. SIP home panels are purchased and shipped to buyers just like panelized homes, except in this case, the panels are made of two oriented strand boards (OSBs) with a thick layer of insulating foam between them.
The panels provide an alternative to typical wood framing that is faster to install and more energy efficient. SIPs can be customized by builders to fit almost any home design, including a hobbit house. They are a great option for anyone who wants a more sustainable and energy-efficient prefab home.
Here are some benefits and potential drawbacks to help you understand what you’re getting into with a prefab home.
Prefab homes tend to be one of the cheapest ways to build a house. On average, they’re about 10% – 20% cheaper than traditional homes. And because sections of the home arrive at the build site already constructed, on-site construction time gets cut down.
While it is typically less expensive to construct a prefab home than a traditional house, you should keep in mind that the cost to build doesn’t include other expenses, such as the cost of the land the home is on, the cost of hooking up utilities, etc.
It’s important to note that not all mortgage lenders offer financing for all types of prefab houses. Possible financing options for prefab homes are construction loans or a chattel loan, which is a special financing option for personal property.
Your loan options will depend heavily on the type of prefab home you want to buy. Rocket Mortgage® finances modular homes built on permanent foundations. Manufactured homes are also available for financing if they meet the following requirements:
FHA loans for manufactured homes require a foundation inspection to ensure there are no foundation issues. The inspection must meet the standards set in the Permanent Foundations Guide for Manufactured Housing. You can also use a previous home inspection to qualify for an FHA loan.
The timeline for putting together a prefabricated home will vary based on the type of home you’ve chosen. The timeline for a shipping container home will differ from the timeline for a modular home. Manufactured homes are built off-site and arrive at your property assembled, but a modular home may take weeks or months to build.
In general, it takes a few months to assemble most prefabricated homes. Stick-built home construction typically takes longer, anywhere from months to a year or more.
A prefab house may be a great option if you want a cheaper, more sustainable and energy-efficient housing option – but prefab homes can be hard to finance, and they aren’t for everyone. Weigh all the pros and cons against your goals and financial situation to help you make the best decision.
If you want to buy a prefab house or land to build a home on, connect with a Verified Partner Agent from Rocket HomesSM to discover your options today.
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