We are also working with commercial loan customers that may need payment deferrals or other accommodations to keep their loans out of default through the COVID-19 pandemic. As of September 30, 2020, we have provided 162 payment deferrals on commercial loans with a total principal balance of $289.2 million, or 14.0%, of total commercial loans, of which $214.4 million are loans included in an at risk sector. As of September 30, 2020, 68.7% of the commercial deferrals have expired and the borrower is making payments as agreed, 1.7% of the commercial deferrals have expired and the borrower is delinquent, and 29.6% are in active deferral period. The majority of active commercial deferrals expire during the fourth quarter. Requests for additional deferrals or new deferrals are immaterial at September 30, 2020.
The residential loan and consumer loan portfolios have not experienced significant credit quality deterioration as of September 30, 2020; however, the continuing impact and uncertain nature of the COVID-19 pandemic may result in increases in delinquencies, charge-offs and loan modifications in these portfolios through the remainder of the year. As of September 30, 2020, we had provided 186 payment deferrals on residential mortgage loans with a total principal balance of $56.7 million, or 5.0% of total residential loans, of which 74.9% of the deferrals have expired and are paying as agreed and 24.2% are in active deferral periods. We had 561 payment deferrals on consumer loans with a total principal balance of $13.3 million, or 4.2%, of total consumer loans, of which 91.4% of the deferrals have expired and are paying as agreed. Requests for additional extensions on residential mortgage loans and consumer loans were not significant as of September 30, 2020.
Net charge offs totaled $338,000 for the quarter ended September 30, 2020, or 0.04% of average loans outstanding on an annualized basis, compared to $286,000, or 0.03% of average loans outstanding on an annualized basis, for the quarter ended June 30, 2020 and $106,000, or 0.01% of average loans outstanding on an annualized basis, for the quarter ended September 30, 2019.
Total nonperforming assets were $41.0 million at September 30, 2020, compared to $38.6 million at June 30, 2020 and $27.9 million at September 30, 2019. Nonperforming assets as a percentage of total assets were 0.93% at September 30, 2020, 0.86% at June 30, 2020, and 0.71% at September 30, 2019. The increase from the preceding quarter is primarily due to a commercial loan that amounted to $1.4 million and a net increase in nonperforming residential real estate loans of $1.4 million. The increase in nonperforming assets from the prior year quarter was primarily in the commercial loan portfolio.
Balance Sheet
Total assets decreased $36.6 million, or 0.8%, to $4.43 billion at September 30, 2020 from $4.46 billion at June 30, 2020. The decrease primarily reflects a decrease of $110.3 million in short-term investments partially offset by a $28.7 million increase in net loans and $31.5 million increase in loans held for sale. Additionally, an asset held for sale at June 30, 2020 of $8.5 million closed in the third quarter.
Net loans increased $28.7 million, or 0.8%, to $3.47 billion at September 30, 2020 from $3.44 billion at June 30, 2020. The net increase in loans for the three months ended September 30, 2020 was primarily due to increases in commercial real estate loans of $62.9 million, commercial and industrial loans of $23.9 million, and commercial construction loans of $17.4 million, partially offset by a decrease in consumer loans of $41.8 million and a $20.7 million decrease in residential real estate loans. Loans held for sale increased $31.5 million, or 19.8%, to $190.4 million at September 30, 2020, from $158.9 million at June 30, 2020.
Total deposits increased $57.2 million, or 1.7%, to $3.37 billion at September 30, 2020 from $3.31 billion at June 30, 2020. Compared to the prior quarter, non-certificate accounts increased $29.2 million and term certificate accounts increased $28.0 million. FHLB borrowings decreased $105.0 million, or 52.5%, to $236.1 million at September 30, 2020 from $341.1 million at June 30, 2020.
Total stockholders’ equity was $694.1 million at September 30, 2020 compared to $684.4 million at June 30, 2020 and $659.6 million at September 30, 2019. The tangible common equity to tangible assets ratio was 14.23% at September 30, 2020, 13.88% at June 30, 2020, and 15.06% at September 30, 2019. At September 30, 2020, the Company and the Bank had strong capital positions and exceeded all regulatory capital requirements.
About HarborOne Bancorp, Inc.
HarborOne Bancorp, Inc. is the holding company for HarborOne Bank, a Massachusetts-chartered savings bank. HarborOne Bank serves the financial needs of consumers, businesses, and municipalities throughout Eastern Massachusetts and Rhode Island through a network of 26 full-service branches located in Massachusetts and Rhode Island, one limited service branch and a commercial lending office in each of Boston, Massachusetts and Providence, Rhode Island. The Bank also provides a range of educational services through “HarborOne U,” with classes on small business, financial literacy and personal enrichment at two campuses located adjacent to our Brockton and Mansfield locations. HarborOne Mortgage, LLC, a subsidiary of HarborOne Bank, is a full-service mortgage lender with more than 30 offices in Massachusetts, Rhode Island, New Hampshire, Maine, New Jersey and Florida and is licensed to lend in four additional states.