In real estate, property and building leases are common signed agreements between two corporations. Leasehold improvements are generally building additions for the lease space paid for by the tenant (lessee). These costs are considered capital and amortized over the length of the lease.
Discussion:

Common lease periods for real property are 5 to 10 years.

The lease rates are negotiated by the lessor and the lessee at fair market value. The periodic lease payments are a deduction for the corporation. Upon termination of the lease, the leasehold improvements usually revert back to the lessor unless the lessee can remove them. Read More