Architects or Designers
A good rule is to find a professional that specializes in the project. Architects and designer are licensed and both qualified to do design/permit drawings.
A good source of referrals maybe a friend a family member or neighbor who had similar work completed.
Usually architects are with larger online pokies play firms although some are independent.
Their fees are usually a percentage of the project cost and often include project management.
Technologists are usually independent entrepreneurs and their fees are usually less. Some are associated with larger firms and offer project management as well.