Yes, you can obtain planning advice prior to the submission of a planning application. This is typically called pre-application advice and it can be obtained either directly from your local planning authority or an independent town planning consultant. Since planning laws and regulations can be confusing and complex, it is advisable to seek pre-application planning advice to make sure the application that you submit has got the highest chances of being accepted.
Working with a town planning consultant allows you to amend your application early on and optimise it according to professional advice, which ultimately increases the likelihood of it being accepted the first time around.