Driveway Rules: Northglenn vs Thornton
How do driveway rules rules compare between Northglenn, CO and Thornton, CO?
Thornton has fewer restrictions than Northglenn.
Northglenn, CO
Adams County
Northglenn's Unified Development Ordinance (Article 11-4) caps single-family driveways at 40% of the lot width and 50% of the front-yard area, with no single driveway exceeding 30 feet in width. Asphalt is prohibited as a driveway surface for single-family residential properties (rock/gravel allowed). Front-yard storage of vehicles is limited to 48 hours for loading/unloading; RV/boat storage in residential areas is restricted.
View full Northglenn rules →Thornton, CO
Adams County
Thornton requires vehicles to be parked on improved surfaces. Parking on front lawns typically prohibited. Driveway modifications require permits.
View full Thornton rules →Key Facts Comparison
| Fact | Northglenn | Thornton |
|---|---|---|
| Code Reference | UDO Article 11-4 | - |
| Max Driveway Width | 40% of lot width / 30 ft single | - |
| Max Front-Yard Driveway | 50% of front yard | - |
| Asphalt | Prohibited (single-family) | - |
| Surface | - | Paved/improved required |
| Front Lawn | - | Parking prohibited |
| Modifications | - | Permit required |
| Inoperable | - | Not allowed in driveway |
Highlighted rows indicate differences between cities.
Northglenn FAQ
How wide can my driveway be in Northglenn, CO?
No more than 40% of your lot width across all driveways combined, and no single driveway wider than 30 feet at any point. The total driveway surface cannot exceed 50% of the front yard area.
Can I use asphalt for a Northglenn driveway?
Not for a single-family residential driveway. UDO Article 11-4 prohibits asphalt as a single-family residential driveway/parking surface. Rock or gravel is allowed as an approved alternative.
Thornton FAQ
Can I park on my front lawn?
No. Vehicles must be on approved paved or improved surfaces.
Can I widen my driveway?
Requires a permit. Must meet zoning setback requirements.
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