I do commercial leasing and property management for a full time job. In general, the landlord will lease you a space on an as is basis and you will be responsible for the tenant improvements.
There are times where the landlord will provide TI's but these will be rare, usually they will just give you a flat $ or per square foot budget and you can spend it how you please. Therefore, you are the one responsible for hiring all the appropriate people and also the inherent risk of the project.
If you have more specific questions, feel free to PM me some more details on the lease, i.e. length, size of the space, rate, etc. and I can help in any way!
Good luck with the business!