purchased receivables was $60.5 million at September 30, 2022, compared to $56.7 million at September 30, 2021, and $53.2 million at December 31, 2021.
The commercial loan portfolio, excluding PPP loans, decreased ($37.7) million, or (7%), to $541.2 million at September 30, 2022, from $578.9 million at September 30, 2021, and decreased ($52.9) million, or (9%), from $594.1 million at December 31, 2021. Commercial and industrial (“C&I”) line usage was 29% at September 30, 2022, compared to 27% at September 30, 2021, and 31% at December 31, 2021. In addition, the Company had $1.6 million in PPP loans at September 30, 2022, compared to $164.5 million at September 30, 2021, and $88.7 million at December 31, 2021.
The Company’s CRE loans consist primarily of loans based on the borrower’s cash flow and are secured by deeds of trust on commercial property to provide a secondary source of repayment. The Company generally restricts real estate term loans to no more than 75% of the property’s appraised value or the purchase price of the property depending on the type of property and its utilization. The Company offers both fixed and floating rate loans. Maturities for CRE loans are generally between five and ten years (with amortization ranging from fifteen to twenty five years and a balloon payment due at maturity), however, SBA and certain other real estate loans that can be sold in the secondary market may be granted for longer maturities.
The CRE owner-occupied loan portfolio increased $31.6 million, or 5%, to $612.2 million at September 30, 2022, from $580.6 million at September 30, 2021, and increased $16.3 million, or 3%, from $595.9 million at December 31, 2021. CRE non-owner occupied loans increased $194.4 million, or 23%, to $1,203.4 million at September 30, 2022, compared to $829.0 million at September 30, 2021, and increased $121.1 million, or 13% from $902.3 million at December 31, 2021. At September 30, 2022, 37% of the CRE loan portfolio was secured by owner-occupied real estate, compared to 41% at September 30, 2021, and 40% at December 31, 2021.
The Company’s land and construction loans are primarily to finance the development and construction of commercial and single family residential properties. The Company utilizes underwriting guidelines to assess the likelihood of repayment from sources such as sale of the property or availability of permanent mortgage financing prior to making the construction loan. Construction loans are provided only in our market area, and the Company has extensive controls for the disbursement process. Land and construction loans increased $26.1 million, or 19%, to $167.4 million at September 30, 2022, compared to $141.3 million at September 30, 2021, and increased $19.6 million, or 13%, from $147.8 million at December 31, 2021.
The Company makes home equity lines of credit available to its existing customers. Home equity lines of credit are underwritten initially with a maximum 75% loan to value ratio. Home equity lines of credit increased $9.8 million, or 9%, to $116.5 million at September 30, 2022, compared to $106.7 million at September 30, 2021, and increased $6.9 million, or 6%, from $109.6 million at December 31, 2021.
Multifamily loans increased $23.5 million, or 11%, to $229.4 million, at September 30, 2022, compared to $205.9 million at September 30, 2021, and increased $10.6 million, or 5%, from $218.9 million at December 31, 2021.
From time to time the Company has purchased single family residential mortgage loans. Residential mortgage loans increased $297.3 million, or 141%, to $508.8 million at September 30, 2022, compared to $211.5 million at September 30, 2021, and increased $92.1 million, or 22% from $416.7 million at December 31, 2021.
During the third quarter of 2022, the Company purchased single family residential mortgage loans totaling $73.5 million, tied to homes located in California, with average principal balances of approximately $1.0 million and a bond equivalent yield of approximately 5.24%, which uses the average life of the loan to recognize the discount into income. During the first nine months of 2022, the Company purchased single family residential mortgage loans totaling $148.0 million, tied to homes located in California, with average principal balances of approximately $915,000. Purchases of residential loans have been an attractive alternative for replacing mortgage-backed security paydowns in the investment securities portfolio.
Consumer and other loans decreased ($3.5) million, or (17%), to $16.6 million at September 30, 2022, compared to $20.1 million at September 30, 2021, and decreased ($124,000), or (1%) from $16.7 million at December 31, 2021.
Additionally, the Company makes consumer loans for the purpose of financing automobiles, various types of consumer goods, and other personal purposes. Consumer loans generally provide for the monthly payment of principal