Farm building design/plan

I am looking to have a farm building designed – specifically a barn – to be used as animal housing. I already have a general plan for the layout and am looking for someone who can take my plan and bring it to fruition. The design should include quality construction materials and the necessary square footage for the intended purpose. I will need help with the layout details and with choosing the best materials to be used for the overall project. In addition, I would like to discuss any potential modifications that could be made to better suit my needs. Whoever is chosen to work on this project should have experience in designing and constructing farm buildings and have know-how in what is required to ensure the building will function properly and will meet all applicable safety requirements.