Yes, construction and getting all permits, approvals, inspections, etc, can be very time consuming. What's scary is that it seems the lease hasn't been signed yet. I've negotiated and signed almost 100 leases for commercial retail space (some were 85 pages long)from different landlords. If it's taking this long to negotiate and sign the lease, something is wrong. 95% of any commercial lease is boilerplate. You should be able to read the lease and make corrections in 2-3 days max. Getting final agreement on terms from a large corporate landlord may take some time to go through the corporate heirarchy, but not this long. It's a store in a strip shopping center - it's not rocket science.