03/24/2026

The City of Darien has updated its rules regarding commercial and large vehicles parked on private property. Below are the key points residents should know:

What's Prohibited

  • Semitractors, semitrailers, and Class 3+ vehicles over 10,000 lbs. may not be parked or stored on private property.
  • Farm and earth-moving equipment (bobcats, bulldozers, road graders, tractors, cranes, brush chippers, and similar machinery) may not be stored on private property.
  • Tow trucks, wreckers, flatbeds, and vehicle carriers may not be parked on private property except while actively loading or unloading.
  • No more than two commercial vehicles may be stored outdoors overnight on any residential lot.

What's Still Allowed

  • Heavy-duty pickup trucks (2500- and 3500-series) with a manufacturer GVWR up to 14,000 lbs. are permitted.
  • Vehicles actively loading or unloading merchandise or passengers are permitted.
  • Military vehicles — up to two, owned by a private resident or veterans' organization — are permitted for noncommercial, ceremonial use.
  • One construction or dump trailer owned by a resident may be parked in a side yard driveway, subject to size limits: max 16 ft. long, 6 ft. tall, and GVWR under 16,000 lbs.

Vehicle Class Reference Chart

Classes 1 & 2 and Class 3 heavy-duty pickups (up to 14,000 lb. GVWR) are allowed. Classes 3 and above (non-pickup) are restricted.

Class 1 & 2 — Up to 10,000 lbs.

Minivan, Cargo Van, SUV, Pickup Truck, Step Van

✓ Allowed

Class 3 — 10,001–14,000 lbs.
(Heavy-Duty Pickup)

Heavy-Duty Pickup (2500/3500-series, factory open bed)

✓ Allowed

Class 3 — 10,001–14,000 lbs.
(Commercial)

Walk-in Van, Box Truck, City Delivery

✗ Restricted

Class 3 — 14,001–16,000 lbs.

Large Walk-in, Box Truck, City Delivery

✗ Restricted

Class 5 — 16,001–19,500 lbs.

Bucket Truck, Large Walk-in, City Delivery

✗ Restricted

Class 6 — 19,501–26,000 lbs.

Beverage Truck, Single Axle, School Bus, Rack Truck

✗ Restricted

Class 7 — 26,001–33,000 lbs.

Refuse, Furniture Truck, City Transit Bus, Truck Tractor

✗ Restricted

Class 8 — 35,001 lbs. & Over

Cement Truck, Truck Tractor, Dump Truck, Sleeper

✗ Restricted

 

Compliance Deadline: Legal, non-conforming property owners currently not in compliance have until March 2, 2027 to bring their property into conformance with the new rules.

Questions? Contact City Planner Ryan Murphy for more information (630) 353-8113.