What distinguishes a residential home improvement license from a commercial one in Suffolk County?

The distinction between a residential home improvement license and a commercial one in Suffolk County primarily revolves around the type of projects each license permits. A residential license is specifically intended for improvement projects that take place in residential properties, such as single-family homes or rental residential units. This means it covers renovations, repairs, and upgrades that are residential in nature.

On the other hand, commercial licenses are designated for businesses and commercial properties, which can include offices, retail spaces, and larger facilities. This separation is critical as the regulations, safety requirements, and standards for construction and improvement can differ significantly between residential and commercial projects.

Focusing on the other options, cost differences between licenses might not directly pertain to their primary purpose and why those licenses are issued. Similarly, the nature of work allowed for each type does not dictate that residential licenses include outdoor work to the exclusion of commercial ones, as both types can engage in various forms of work depending on the property type. Lastly, while the duration of validity is an important factor to consider for licensing, it does not serve to define the core difference between residential and commercial licensing.

Therefore, the primary differentiator remains the scope of the projects each license covers, which is clearly outlined in the correct choice.