Revenue Recognition Base rental revenue is recognized on a straight-line basis over the terms of the respective leases. Unbilled rents receivable represents the cumulative amount by which straight-line rental revenue exceeds rents currently billed in accordance with the lease agreements. Above-market and below-market lease values for acquired properties are initially recorded based on the present value (using a discount rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to each in-place lease and (ii) management s estimate of fair market lease rates for each corresponding in-place lease, measured over a period equal to the remaining term of the lease for above-market leases and the remaining initial term plus the term of any below-market fixed-rate renewal options for below-market leases. The capitalized above-market lease values for acquired properties are amortized as a reduction of base rental revenue over the remaining terms of the respective leases, and the capitalized below-market lease values are amortized as an increase to base rental revenue over the remaining initial terms plus the terms of any below-market fixed-rate renewal options of the respective leases. Escalations and recoveries from tenants are received from tenants for certain costs as provided in the lease agreements. These costs generally include real estate taxes, utilities, insurance, common area maintenance and other recoverable costs. See Note 14: Tenant Leases. Construction services revenue includes fees earned and reimbursements received by the Company for providing construction management and general contractor services to clients. Construction services revenue is recognized on the percentage of completion method. Using this method, profits are recorded on the basis of our estimates of the overall profit and percentage of completion of individual contracts. A portion of the estimated profits is accrued based upon estimates of the percentage of com