Search for condos for rent in Seneca, IL on Apartments.com. With 0 available, you can find the right condo with the floor plan and amenities that fit your needs. When you rent a condo, you’ll likely rent from an individual owner rather than a property management company. This means units in the same building may have different features and layouts. Be sure to check out the photos and take a tour of the unit as you search for your Seneca home. If you’re looking for a budget-friendly condo to rent, try looking in affordable nearby cities like Marseilles.