Typically, homeowners must hire an architect and a contractor and take care of permits and other paperwork.

Perpetual Homes ADU is responsible for all of these tasks, including design, permitting, construction, and installation of the ADU. Perpetual Homes' fixed cost covered not only the cost of construction and installation, but also the cost of permitting, utility connections, and landscaping.

A Perpetual Home is a self-contained living space with the look and feel of a home. Each Perpetual Home has a living space, a kitchen with full-size appliances, a bathroom, and a bedroom (s). High-quality materials with full-sized windows and doors are used during the construction of each unit.

While these terms are easy to figure out, there are differences that are not immediately apparent. Yes, a factory-built home is just that…a home that is fully constructed in a factory. After the framework construction, the interior finish, countertops and cabinetry, carpet and another final finish work is completed. Factory-built homes are transported to the site and quickly assembled, ensuring minimal weather exposure. Once the sections of the house are assembled, utilities are connected, and a short list of interior finish work is completed. The site will have been prepared while the home was being constructed.

A site-built home is one where all the components, right down to the lumber and fasteners, are brought to the outdoor location and assembled outdoors, piece-by-piece, and exposed to the weather during most of the process.

We believe there are distinct advantages to the factory-built model.

All assembly is done under climate-controlled conditions. None of the building materials are exposed to the weather before or during construction. Before building materials are used, they are also stored indoors. In the construction of site-built homes, materials are exposed when stored on-site before use, and during most of the construction process until the home is fully sealed. Exposure to outdoor conditions, especially rain and moisture, can cause increased expansion, contraction, and warping and can increase the potential of mold problems.

Factory-built homes are generally stronger. They’re constructed to withstand transportation, and as a result, are sturdier once they’re on site.

Factory construction is more efficient. Site work and construction of your home can happen at the same time. And because all materials are on hand, there are no delays in material delivery. And weather-related delays are virtually non-existent. On average, you’ll be able to move into your factory-built home in far less time than conventional construction.

Building to Green Standards

Our prefab homes and ADUs incorporate materials, systems, and construction practices designed to support efficient residential development.

Engineered for efficient material use

80% of construction waste reused or recycled

Engineered lumber

Low-VOC adhesives and paint

Formaldehyde-free insulation

Sealed and tested ductwork

High-efficiency toilets

Efficient water distribution systems

Mechanical fresh-air ventilation systems

Perpetual Homes works with Skyline Homes, a member of the Champion Homes family of brands and an established manufactured and modular home builder. 

Skyline combines strong value, award-winning designs, and consistent construction standards to produce customizable ADUs, single-family homes, and other residential housing options. 

Skyline was named America’s Most Trusted® Manufactured Home Builder for six consecutive years, from 2021 through 2026.