Where is the Serial Number Located on a Mobile Home?

April 11, 2025

When it comes to mobile homes, understanding the importance of the Vehicle Identification Number (VIN) and serial number is crucial for ownership, insurance, and resale purposes. The VIN serves as a unique identifier for your mobile home, much like a fingerprint for vehicles. In this blog post, we will explore where to locate the serial number on a mobile home, its significance, and how it relates to other important identifiers like the HUD tag and data plate.

Understanding the Serial Number and VIN

The serial number of a mobile home is a unique identifier assigned by the manufacturer, and it is often synonymous with the VIN. This number is essential for various administrative tasks, including registering the home, obtaining insurance, and transferring ownership. The VIN typically consists of a combination of letters and numbers that provide information about the manufacturer, the state where it was built, and the specific unit's serial number.

Importance of the Serial Number

  1. Ownership Verification: The serial number is essential for proving ownership of the mobile home. It must match the title and registration documents.
  2. Insurance Requirements: Many insurance companies require the VIN to provide coverage for the mobile home. Without it, obtaining insurance can be challenging.
  3. Resale and Financing: When selling or refinancing a mobile home, the serial number is necessary for the transaction to be valid and recognized by financial institutions.

Locating the Serial Number on a Mobile Home

1. Data Plate

The primary location for finding the serial number is on the data plate, which is a standardized sheet of paper affixed inside the mobile home. The data plate contains vital information about the home, including:

  • Manufacturer's name and address
  • Serial number (VIN)
  • Date of manufacture
  • Certification labels
  • Performance verification numbers

Common Locations for the Data Plate

The data plate can typically be found in several accessible locations within the mobile home:

  • Inside a Kitchen Cabinet: Often located on the back of a cabinet door or inside the cabinet itself.
  • Electrical Panel: Sometimes, the data plate is affixed near the main electrical panel.
  • Bedroom Closet: The back wall of a small bedroom closet or the master bedroom closet is a common place for the data plate.
  • Water Heater Closet: It may also be found inside the enclosure for the hot water tank.

2. HUD Tag

The HUD tag, also known as the certification label, is another critical identifier for mobile homes. This metal tag is affixed to the exterior of the home and provides certification that the unit meets federal standards. The HUD tag includes:

  • A unique certification label number
  • The manufacturer's inspection agency code
  • The date of manufacture

Location of the HUD Tag

The HUD tag is typically located on the exterior of the mobile home, often found:

  • Near the Bottom of the End Wall: It is usually placed just above the bottom edge of the home, near the back of each section.
  • Near the Main Entry Door: Some homes may have the HUD tag located outside the main entry door, near the lower right corner.

3. Steel Frame Stamping

In addition to the data plate and HUD tag, the serial number may also be stamped directly onto the mobile home’s steel frame. This is particularly common for older models and can be found in the following locations:

  • On the First Cross Member of the Steel Frame: This is located at the tongue and hitch end of the home.
  • On the Exterior Side of the End Wall: The serial number may also be stamped on the exterior side of the end wall opposite the hitch.

4. Other Possible Locations

For mobile homes manufactured before 1976, the VIN may be found in various locations due to the lack of standardized VIN regulations at that time. Common locations include:

  • On or Near the Electrical Panel: Similar to newer models, older homes may have the VIN near the electrical panel.
  • On the Tongue or Hitch: The VIN may also be located on the tongue or hitch of the mobile home.
  • Hot Water Tank Enclosure: Check inside the enclosure for the hot water tank for any identifying numbers.
  • Inside Kitchen Sink Cabinet: The cabinet under the kitchen sink is another potential location for the VIN.
  • Bedroom Closet Walls: The walls of bedroom closets may also contain the VIN.

5. County Assessor’s Office

If you are unable to locate the serial number through the above methods, another option is to contact your local County Assessor's Office. They may have records that include the VIN associated with your mobile home. This information is often found at the end of your legal description, noted with ‘S#’ for serial number.

What to Do If the Serial Number is Missing

If you find that the data plate or HUD tag is missing, it is essential to take action promptly. Here are steps to follow:

  1. Contact the Institute for Building Technology and Safety (IBTS): They can assist in issuing a replacement data plate if yours is missing. A base fee of $50 applies for processing requests, which typically takes two to three weeks. An expedited request can be processed in 2-3 days for a fee of $100.

  2. Verify with HUD: If the HUD tag is missing, you cannot get a replacement. Instead, you can request a Letter of Label Verification from IBTS, which can provide the necessary information for insurance purposes.

  3. Check with Local Authorities: If you are still unable to locate the serial number, consider reaching out to local housing authorities or the Department of Housing and Urban Development (HUD) for assistance.

Conclusion

Locating the serial number on a mobile home is crucial for ownership verification, insurance, and resale purposes. The serial number can typically be found on the data plate inside the home, the HUD tag on the exterior, or stamped on the steel frame. If you encounter difficulties in finding the serial number, contacting the County Assessor’s Office or relevant authorities can provide additional support. Always ensure that your mobile home’s identifiers are accessible and legible to avoid complications in the future.

References

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