AnsPress shortcode cannot be nested.
You should know the rent, whether their are other amounts due beyond rent like coffee, conference room, copy, scanning, mailing etc. You should find out the cost of internet and telephone so you understand the total cost. Depending upon the location you probably will be renting a completed office but you may be renting a space that will include a buildout and you should know those costs and time to be ready. Also who pays rent during this time. What is the parking fee? Do you need insurance and what amounts? Ideally speaking to current tenants is a good way to see how the space is managed. Always have the lease reviewed by an attorney if possible. Determine if you will be personally guaranteeing lease performance. If you are subleasing then find out when the underlying lease expires. Review the termination section as well. This is a good start.