Special Permit Rules for Manufactured Homes and Modular Buildings

Nov. 6, 2025, 8:07 p.m.
Transporting manufactured homes and modular buildings through New Mexico requires strict adherence to the state’s special permit rules. Because these loads are often oversize, the New Mexico Motor Transportation Division (MTD) enforces unique requirements covering dimensions, routing, escort vehicles, and safety standards. Understanding these rules helps carriers ensure compliance, avoid fines, and guarantee safe delivery.
Special Permit Rules for Manufactured Homes and Modular Buildings

1. Why Manufactured Homes Need Special Permits

Manufactured homes and modular units often exceed standard legal limits for width, height, or length.

  • Standard width limit: 8 feet 6 inches (102 inches)

  • Standard height limit: 14 feet

  • Standard length limit (single vehicle): 65 feet

Any load exceeding these limits must obtain a Special Oversize Permit from the New Mexico MTD before transport.

2. Permit Types for Manufactured Homes

There are two main permit categories:

  • Single-Trip Permit – for one-time moves of a specific unit between two points.

  • Annual Permit – for transporters who frequently move manufactured homes within the state.

Permits can be applied for online via the New Mexico Oversize/Overweight Permitting System or at designated port of entry offices.

3. Dimension and Weight Restrictions

For manufactured homes:

  • Maximum width: Up to 16 feet (including eaves)

  • Maximum height: 15 feet 6 inches

  • Maximum overall length: 120 feet (vehicle + load)

  • Maximum weight: Governed by axle and bridge formula limits

If the load exceeds these limits, a Superload Permit is required and must undergo manual route review.

4. Escort and Safety Requirements

Escort vehicle requirements depend on the home’s width and travel route:

  • Up to 12 feet wide: No escort needed

  • 12–14 feet wide: One escort vehicle (front or rear)

  • Over 14 feet wide: Two escorts (front and rear)

  • Over 16 feet wide: May require law enforcement escort and special route approval

Each escort must be properly equipped with warning flags, amber lights, and two-way communication devices.

5. Travel Time and Restrictions

  • Daytime travel only: Sunrise to sunset.

  • No travel on holidays or major event days.

  • Wind restrictions: Transport is prohibited during sustained winds exceeding 25 mph or gusts over 30 mph — due to the high wind risk for large structures.

Carriers are responsible for checking weather and route advisories before departure.

6. Signage and Lighting Requirements

Manufactured homes must display:

  • “Oversize Load” signs at both front and rear.

  • Red or orange warning flags at all four corners.

  • Amber rotating or flashing lights visible from 500 feet in all directions.

These visibility measures are critical for highway safety and compliance inspections.

7. Applying for a Permit

To apply:

  1. Access the  www.newmexicotruckingonline.com

  2. Enter carrier, vehicle, and load details.

  3. Upload route maps (if applicable).

  4. Submit payment (credit card or escrow account).

  5. Download the approved permit and keep a copy in the cab.

Permits must be carried at all times during transport, either printed or in digital format.

8. Penalties for Non-Compliance

Operating without a valid special permit or violating permit conditions can result in:

  • Fines up to $1,000 per offense

  • Trip suspension or vehicle impoundment

  • Loss of permit privileges

In severe cases, the driver and carrier may be held liable for damages caused by improper transport.

Conclusion

The transportation of manufactured homes and modular buildings in New Mexico requires careful planning and full compliance with special permit rules. By following MTD regulations, securing the correct permits, and adhering to escort and safety standards, carriers can ensure smooth, safe, and legal operations across the state.