Idaho mobile home — quick answer
Idaho handles manufactured home transfers at the county assessor motor vehicle office rather than a state DMV counter, and it puts a hard 30-day clock on the buyer with a penalty after it. A double-wide also carries two VINs, and a bill of sale that records only one of them will not describe the whole home.
How mobile home sales actually work in Idaho
- Where it is filed
- County assessor motor vehicle office
- Deadline
- 30 days from transfer where there is no lienholder
- Late penalty
- $20 late-filing penalty
- Bill of sale form
- ITD 3738 — provides for a second VIN on double-wide homes
- Title application
- ITD 3337, Application for Certificate of Title
- VIN inspection
- Required where an MSO, MCO or out-of-state title is submitted
- Declaring it real property
- Idaho State Tax Commission Form EFO00312
Transferring a mobile home in Idaho, step by step
- Record both VINs if the home is a double-wide. ITD 3738 has a field for the second one precisely because a single number does not identify the whole home.
- Seller releases interest by signing the existing title, and provides a bill of sale stating the amount the home sold for.
- Buyer files at the county assessor motor vehicle office within 30 days of the transfer where there is no lienholder.
- Expect a VIN affidavit of inspection if what you are submitting is an MSO, MCO or an out-of-state title rather than an Idaho title.
What private buyers get wrong here
- The 30-day clock carries a $20 penalty and it runs from the transfer, not from when the buyer gets around to the counter.
- Most blue Idaho titles have a space for the sale amount. Where the title does not, a separate bill of sale has to be submitted instead.
- A single-VIN bill of sale on a double-wide is the common error, and it is the one that causes trouble later when only half the home is documented.
Verified 2026-09-24 against Idaho Transportation Department — Vehicle Titles and ITD 3738 — Bill of Sale and Idaho State Tax Commission — Statement of Intent to Declare a Manufactured Home as Real Property . Rules change — confirm before you sign.
Is a mobile home bill of sale required in Idaho?
Idaho handles manufactured home transfers at the county assessor motor vehicle office rather than a state DMV counter, and it puts a hard 30-day clock on the buyer with a penalty after it. A double-wide also carries two VINs, and a bill of sale that records only one of them will not describe the whole home.
Does a Idaho mobile home bill of sale need to be notarized?
Check the instructions for the specific title and bill-of-sale form. A requirement to notarize a title assignment does not automatically mean the separate bill of sale needs notarization. If notarization is required, wait to sign until the notary instructs you.
What to include on a Idaho mobile home bill of sale
- Buyer and seller full legal names and addresses
- Year, make, model, and type (single/double-wide)
- Serial number / VIN and HUD label number
- Size (width × length) and current location
- Price, date, and signatures of both parties
Official sources
- Idaho Transportation Department — Vehicle Titles
- ITD 3738 — Bill of Sale
- Idaho State Tax Commission — Statement of Intent to Declare a Manufactured Home as Real Property
Requirements change and can vary by county. Confirm with the Idaho ITD before you sign. Not legal advice.
Idaho Mobile Home Bill of Sale — FAQ
Is a mobile home bill of sale required in Idaho?
Idaho handles manufactured home transfers at the county assessor motor vehicle office rather than a state DMV counter, and it puts a hard 30-day clock on the buyer with a penalty after it. A double-wide also carries two VINs, and a bill of sale that records only one of them will not describe the whole home.
Does a Idaho mobile home bill of sale need to be notarized?
Check the signing requirements for the specific title and bill-of-sale form. Notarization of a title assignment and notarization of a bill of sale are separate questions; a car rule does not establish the rule for this item.
Do I need a bill of sale to sell a mobile home?
In most cases, yes. A mobile home bill of sale documents the price and terms and supports the title transfer. If the home is titled as personal property you will also sign over the title; if it has been converted to real property, the sale is handled more like real estate.
Is a mobile home titled like a car?
Often, yes — when classified as personal property, a manufactured home is titled through the state motor-vehicle agency, similar to a vehicle. Once permanently affixed to land you own, it may be converted to real property and recorded with the county instead.
Is a bill of sale proof of ownership?
Generally no. For titled property like a car or boat, the title is what proves ownership. A bill of sale proves that a sale happened and records the price, date, and terms — it supports the title transfer but does not replace it. For untitled property (furniture, equipment, electronics), the signed bill of sale is usually the main proof of ownership.