The Real Costs of Installing a Manufactured Home as an ADU
So, you're considering adding a manufactured home as an Accessory Dwelling Unit (ADU) to your property? That's a fantastic idea for extra space or rental income. However, before you dive in, it's essential to understand what costs are involved. Keep in mind that these are average estimates for a double-wide manufactured home. Actual costs can vary significantly based on your unique situation, so a site visit is crucial for an accurate assessment.
Site Preparation: $2,000
The first step is preparing the area where your manufactured home will be located. This typically involves clearing and leveling the ground, ensuring it's ready for your new home.
Mobile Home Set Up Package: $17,000
This package covers everything you need to get your manufactured home ready for living. It includes removing packing materials used during shipping, setting the home in its final position, and removing the running gear.
Installation of 6 mil plastic sheeting beneath the home helps with insulation and moisture control.
Precisely aligning floors, roofs, and walls to ensure a stable structure.
Installing piers, pads, and anchor braces as per state-approved plans, providing stability and safety.
Connecting and marrying each section of the home per manufacturer and local code instructions.
Roof finishing, including shingling over the ridge cap.
Sealing the marriage line between sections to maintain the home's integrity.
Pressure testing water and sewer systems, along with a power check and appliance testing.
Installing carpet.
Setting up loose items like drapes, blinds, mirrors, and closet shelves.
Constructing steps and painting.
Scheduling and conducting inspections to ensure everything meets safety and code standards.
Final cleanup to leave your ADU move-in ready.
Permanent Foundation: $14,000
A permanent foundation is essential for stability and compliance with local regulations.
The process involves following state-approved plans, creating a trench, installing rebar, and building the foundation using cinder blocks, ensuring proper spacing and alignment.
Anchor bolts secure the mobile home to the foundation, and wood is added between the home and stem wall.
Trim covers the wood between the home and stem, with painting for a polished look.
Like with the setup package, inspections are vital for quality assurance.
The site is thoroughly cleaned up to leave no mess behind.
Additional Costs
Sewer, water, electrical, and gas line connections: Costs here depend on the distance from the source to your ADU.
Permits and fees: These can vary significantly based on your location and local regulations. It's essential to budget for these expenses.
Exterior Materials and Colors: In many locations, your ADU's exterior materials and colors are required to match those of your main home, ensuring aesthetic harmony in your neighborhood.
Remember, these figures are just averages and can fluctuate depending on your specific circumstances. A site visit and consultation with professionals are your best tools for getting an accurate estimate tailored to your ADU project. Happy building!
