The least expensive update you can make, with the most drastic change, is updating the green spaces around your property. This means adding flower gardens, updating and trimming shrubberies and hedges, and cutting and maintaining your grass.
Try to create a lawn that works for the area you live in. If you live in a dry area like the southwestern US, consider using plants that are native to your area instead of paying hundreds to water and maintain grass that doesn’t naturally grow there.
If you live in a swampy or flood-prone area, consider putting in a rain garden. This will run the water deep into your soil, keep your property in place with its roots, and will stop any chance of flooding. By combining these with water trenches to guide even more water away, you won’t have to worry about your property getting underwater.