Oregon Mobile Home Transport Permit Requirements

In Oregon, transporting a mobile home, modular building, or chassis unit requires a special transportation permit.
The relevant regulations fall under Oregon Administrative Rules (OAR) Chapter 734, Division 75 (“Over-Dimensional Mobile Homes and Modular Building Units”).
The permit form for mobile homes is referred to as Attachment 75A.

Even with the permit, the transporting vehicle must be properly registered and have declared tax/weight appropriately.
The permit does not override the vehicle’s registration weight — you cannot carry more than what the vehicle was declared to weigh for tax/registration.

The permittee (the company or person who holds the permit) and driver are liable for any damage to persons, property, or highway structures due to the transport.
They must ensure adequate vertical and horizontal clearance, including contacting utilities (e.g., telephone, cable) if needed, to confirm there’s no risk of hitting wires or structures.
In the event of an accident (e.g., hitting a bridge or structure), Oregon requires the carrier to report to the Over-Dimension Permit Unit within 24 hours.
Drivers may be required to enter weigh scales when directed, even if they have a green light from a transponder.

Width: If the base width (the main body of the mobile home) exceeds 14 feet, or the overall width is more than 15 feet, there are stricter permit conditions.
According to Oregon’s Pilot Car Guide, for certain width thresholds, two-lane highways may require two front and one rear pilot (escort) vehicles, depending on the district.
When a mobile home exceeds 14 ft base width, it must travel only in the right lane on highways (unless permit or traffic conditions dictate otherwise).
ODOT may require a traffic control plan for very wide moves (for example, base width over 14 ft or overall width over 15 ft) on two-lane roads.

Over-width mobile homes (beyond certain width) must have clearance lights: specifically, two flashing amber lights mounted on the rear corners of the eave (if the eave extends significantly).
These required lights must be:
1. On a horizontal plane at least 8 feet above the road, and
2. Visible from 500 feet.

The movement of mobile homes is subject to travel time restrictions as specified in “Attachment H” of the permit rules.
These restrictions exist to avoid conflict with local traffic patterns, construction, and seasonal conditions.
For very large or wide mobile homes, a pre-approved route is required, meaning the permit will specify exactly which highways or roads can be used.

Carriers may be required to provide proof of liability and property damage insurance, depending on the permit conditions.
In some cases, a surety bond or certified check is required to cover potential damages to highways or structures.
The permittee is wholly responsible for any damage to roadway or structures caused by the movement.

If the load strikes a structure or utilities, the carrier must report within 24 hours.
This helps ODOT assess damage and enforce accountability.

Oregon’s rules for mobile home transport are periodically updated. For example, recent changes to OAR 734-075-0037 and other provisions affect the requirement for traffic control plans and lighting.
It’s critical to check the latest version of ODOT’s rules and permit attachments when applying.

Best Practices for Carriers / Shippers

Consult early — Before committing to a move, speak with www.oregontruckingonline.org OR call (503) 386-4187
Do a route survey — Physically or virtually check the planned route for bridges, overhead obstacles, and narrow roads.
Arrange pilot cars — Depending on width, you may need front and rear escorts. Plan and book them in advance.
Ensure visibility — Install all required warning lights, including flashing amber clearance lights if needed.
Get proper insurance or bonding — Be ready to show proof of coverage or post a bond for permit issuance.
Have a contingency plan — Prepare for what to do if there’s a structure strike or unexpected obstacle; know how to report incidents quickly.