Which of the following is NOT a situation under which permits would be required for a homeowner?

Landscaping the property typically does not require a permit as it generally involves actions like planting trees, installing flowers, or laying sod, which are considered maintenance or aesthetic improvements rather than structural changes. These activities fall under the category of ordinary maintenance, allowing homeowners to enhance their outdoor environment without the need for formal approval.

In contrast, the other options mentioned involve significant alterations or installations that can impact safety, building codes, or zoning regulations. For example, the installation of a gas fireplace must comply with safety standards to ensure proper ventilation and avoid fire hazards. Building a garage involves erecting a structure that must meet local zoning and construction codes. Similarly, creating a basement suite alters the use of the home and may require inspections to ensure compliance with safety and occupancy regulations. Therefore, landscaping is the only activity listed that typically does not necessitate obtaining a permit, making it the correct choice in this context.