Multi-family residential mortgage loans totaled $9.4 million, or 7.6% of total loans, at December 31, 2021 compared to $9.0 million, or 7.8% of total loans at December 31, 2020. We continue our effort to originate this type of loan.
Commercial real estate loans totaled $36.7 million, or 29.5% of total loans, at December 31, 2021 compared to $30.2 million, or 26.3% of total loans, at December 31, 2020. During 2021 and 2020, we originated $15.1 million and $5.8 million, respectively, of commercial real estate loans with an emphasis on adjustable-rate loans.
Our construction loan portfolio consists of residential and commercial construction loans. Construction loans totaled $3.0 million, or 2.4% of total loans (excluding unfunded construction loan commitments of $4.7 million), at December 31, 2021, compared to $2.9 million, or 2.5% of total loans (excluding unfunded construction loan commitments of $2.9 million), at December 31, 2020. Commercial construction loan originations increased to $3.3 million during 2021 from $850,000 in 2020.
Commercial business loans totaled $8.8 million, or 7.1% of total loans at December 31, 2021, compared to $5.2 million, or 4.5% of total loans, at December 31, 2020. During 2021 and 2020, we originated commercial business loans of $8.9 million and $3.3 million, respectively.
Consumer loans totaled $2.2 million, or 1.8% of total loans at December 31, 2021, compared to $1.4 million, or 1.3% of total loans, at December 31, 2020. Originations of consumer loans were $1.8 million in 2021 compared to $603,000 in 2020.
Securities Available for Sale. Our available for sale securities portfolio consists primarily of U.S. government agency debt securities, including mortgage-backed securities and collateralized mortgage obligations, and municipal obligations. Available for sale securities increased by $2.8 million, or 2.7%, to $107.3 million at December 31, 2021 from $104.5 million at December 31, 2020. Investment securities increased due primarily to the purchase of $15.4 million of available for sale securities, partially offset by $10.7 million from scheduled principal payments and maturities of mortgage-backed and tax-exempt securities and a $1.5 million decrease in the unrealized gain on available for sale securities. During 2021, we continued our strategy to increase our investment in municipal obligations as a component of our available for sale securities portfolio due to their higher tax-equivalent yield. At December 31, 2021, our investment in municipal obligations was $71.7 million compared to $66.4 million at December 31, 2020.
Securities Held to Maturity. Our held to maturity securities portfolio consists primarily of U.S. government agency mortgage-backed securities. Held to maturity securities decreased $10,000 for the year ended December 31, 2021. The decrease during 2021 was due to principal repayments on mortgage-backed securities. We have not purchased investment securities as held to maturity during the past three years.
Premises and Equipment. Premises and equipment were $2.0 million and $1.9 million at December 31, 2021 and 2020, respectively. See Note 7 of the Notes to Consolidated Financial Statements contained in Item 8 of this report for further information.
Other Assets. Other assets decreased $175,000 to $243,000 at December 31, 2021 from $418,000 at December 31, 2020 primarily due to a decrease in the net deferred tax asset during 2021.
Deposits. Deposit accounts, primarily obtained from individuals and businesses throughout our local market area, are the primary source of funds for our lending and investments. Our deposit accounts are comprised of noninterest-bearing checking, interest-bearing checking, savings, and money market accounts and certificates of deposit. Deposits increased $22.8 million or 13.1%, during the year ended December 31, 2021, primarily as a result of increases in both interest-bearing and noninterest-bearing accounts.
Borrowings. On June 27, 2019, the Company borrowed $10.0 million from the FHLB which matures on June 27, 2024 and bears interest at a rate of 1.73%. On December 30, 2020, the Company borrowed $1.0 million from the FHLB, bearing an interest rate of 0.26% and which matured on January 6, 2021.