Having a garden designer typically costs $1,500 to $5,000 in the US for a full design, or $50 to $150 per hour for smaller consultations. In the UK, where the title is more common, garden designers charge roughly £45 to £75 per hour, with complete designs at £1,500 to £4,000 or around 10 percent of the build budget.
That fee usually buys a site survey, a concept plan, a detailed planting plan, and sometimes help collecting contractor quotes. Small, flat gardens sit at the bottom of the range; sloped or awkward sites push it up.
If you want concepts before committing to that spend, AI tools render styles onto a photo of your actual garden; OutdoorBrite's plans cost a small fraction of a designer's fee.