16. COMMITMENT AND CONTINGENCIES

The Company’s lease population is comprised of leases for land and/or buildings in which certain of the Company’s self-storage facilities operate, as well as leases of corporate office space. All leases where the Company is the lessee qualify as operating leases and the Company does not have any financing leases as of June 30, 2021. At June 30, 2021 and December 31, 2020, the Company’s aggregate right-of-use assets total $20.1 million and $20.3 million, respectively, and are included in other assets on the consolidated balance sheet. The related lease liabilities at June 30, 2021 and December 31, 2020 total $19.5 million and $19.9 million, respectively, and are included in accounts payable and accrued liabilities on the consolidated balance sheet.

Expenses related to operating leases totaled $0.6 million and $0.5 million for the three months ended June 30, 2021 and 2020, respectively, and $1.2 million and $1.0 million for the six months ended June 30, 2021 and 2020, respectively. At June 30, 2021, the weighted average remaining lease term and weighted average discount rate for the Company’s operating leases were 11.1 years and 4.71%, respectively.

At June 30, 2021, the Company has approximately $24.6 million of operating lease commitments, excluding variable consideration. The undiscounted future minimum lease payments are summarized by year in the table below:

The difference between the amounts included in the table above and the aggregate lease liability recorded in the accompanying consolidated balance sheet at June 30, 2021 is the result of the impact of the discount rate on future minimum lease payments.

At June 30, 2021, the Company was under contract to acquire four self-storage facilities for an aggregate purchase price of $54.1 million. The Company acquired two of these facilities subsequent to June 30, 2021 for $22.1 million. The purchases of the remaining facilities are subject to customary conditions to closing, and there is no assurance that these facilities will be acquired.

At June 30, 2021, the Company has signed contracts in place with third-party contractors for expansion and enhancements at its existing facilities. The Company expects to pay $62.8 million under these contracts in 2021 and 2022.