From September 30, 2017 through November 30, 2019, we valued our debt-related investments and real estate-related liabilities generally in accordance with fair value standards under GAAP. Beginning with our valuation for December 31, 2019, our property-level mortgages, corporate-level credit facilities and other secured and unsecured debt that are intended to be held to maturity (which for fixed rate debt not subject to interest rate hedges may be the date near maturity at which time the debt will be eligible for prepayment at par for purposes herein), including those subject to interest rate hedges, were valued at par (i.e. at their respective outstanding balances). In addition, because we utilize interest rate hedges to stabilize interest payments (i.e. to fix all-in interest rates through interest rate swaps or to limit interest rate exposure through interest rate caps) on individual loans, each loan and associated interest rate hedge is treated as one financial instrument which is valued at par if intended to be held to maturity. This policy of valuing at par applies regardless of whether any given interest rate hedge is considered as an asset or liability for GAAP purposes. Notwithstanding, if we acquire an investment and assume associated in-place debt from the seller that is above or below market, then consistent with how we recognize assumed debt for GAAP purposes when acquiring an asset with pre-existing debt in place, the liabilities used in the determination of our NAV will include the market value of such debt based on market value as of the closing date. The associated premium or discount on such debt as of closing that is reflected in our liabilities will then be amortized through loan maturity. Per our valuation policy, the corresponding investment is valued on an unlevered basis for purposes of determining NAV. Accordingly, all else equal, we would not recognize an immediate gain or loss to our NAV upon acquisition of an investment whereby we assume associated pre-existing debt that is above or below market. As of December 31, 2023, we classified all of our debt as intended to be held to maturity, and our liabilities included mark-to-market adjustments for pre-existing debt that we assumed upon acquisition.
Update on Our Assets and Performance
As of December 31, 2023, our consolidated investments include 99 real estate properties totaling approximately 20.1 million square feet located in 33 markets throughout the U.S., which were 95.3% leased. Rent growth on comparable commercial leases executed during the fourth quarter of 2023 averaged 7.9% when calculated using cash basis rental rates and 14.1% when calculated using GAAP basis rental rates. Rent growth on comparable commercial leases executed during the year ended December 31, 2023 averaged 22.8% when calculated using cash basis rental rates and 30.9% when calculated using GAAP basis rental rates. For our industrial properties, rent growth on comparable leases executed during the year ended December 31, 2023 averaged 44.8% when calculated using cash basis rental rates and 53.3% when calculated using GAAP basis rental rates. For our residential properties, rent growth on new and renewal leases executed during the fourth quarter of 2023 averaged 0.5%. Rent growth on new and renewal residential leases executed during the year ended December 31, 2023 averaged 3.9%. As of December 31, 2023, rents across our industrial properties and residential properties, our two largest categories, are estimated to be 17.6% and 4.7% below market (on a weighted-average basis), respectively, providing the opportunity for meaningful net operating income growth.
Additionally, during the three months ended December 31, 2023, we increased our capital commitments by $124.4 million related to our investments in unconsolidated joint venture partnerships.
As of December 31, 2023, our leverage ratio was 36.4% (calculated as outstanding principal balance of our borrowings less cash and cash equivalents, divided by the fair value of our real property, net investments in unconsolidated joint venture partnerships, investments in real estate-related securities and debt-related investments not associated with the DST Program, as determined in accordance with our valuation procedures) and the weighted-average interest rate of our consolidated borrowings was 4.43%.
During the three months ended December 31, 2023, we raised gross proceeds of approximately $144.1 million, including proceeds from our distribution reinvestment plan and the sale of DST Interests (including $11.2 million of DST Interests financed by DST Program Loans). The aggregate dollar amount of common stock and OP Unit redemptions requested for October, November and December, which were redeemed in full on November 1, 2023, December 1, 2023 and January 1, 2024, respectively, was $45.2 million.