Before you choose a landscaping professional, you could take a look for qualifications and memberships from the Association of Professional Landscaper (APL)
and Government Trustmark
. Garden designers hold garden design diplomas from a number of different educational establishments such as the Royal Horticultural Society (RHS)
Before choosing a professional, you may also want to ask for examples of past work, which could include images of different types of landscaping that they have installed in the past. You could also look at their profile page on Bark, and Bark can show you fence and gate installation reviews from past customers too, as well as examples of work that they have completed. This might also help you get some ideas about the types of landscaping you are looking for your property.