Start with the spider you actually saw
Say whether it was in a web, moving along a wall, or tucked beside a stored object. Note the room and whether similar sightings repeat there. An abandoned web is not proof of current activity, and color alone is not a reliable species identification. Do not handle an unknown spider or attribute a skin mark to it without suitable evidence linking the two.
The surroundings may explain the question better
Lights attracting insects, undisturbed storage, damaged screens, and gaps at doors can be useful details to mention. They do not establish a single cause, and living near water does not identify the spider. Explain which locations interfere with normal use of the property and which are simply outdoor observations. This helps focus an assessment on the areas that matter to your household rather than every visible web.
Ask about practical management of those locations
Routine cleaning of accessible webs, more orderly storage, and suitable screen or entry repairs may belong in the discussion alongside any treatment. Describe pets, children, and places where hands regularly reach for tools or belongings. Ask how progress would be judged and what activity warrants another call. A realistic plan addresses the particular concern without promising a permanently spider-free house, garage, and landscape.