differences resulting from differing treatment of items, such as depreciation and the provision for loan losses, for tax and financial reporting purposes.
Deferred tax assets and liabilities occur when taxable income is larger or smaller than reported income on the income statements due to accounting valuation methods that differ from tax, as well as tax rate estimates and payments made quarterly and adjusted to actual at the end of the year. Deferred tax assets and liabilities are temporary differences deductible or payable in future periods. The Company had net deferred tax assets of $164,000 and net deferred tax liabilities of $58,000, at March 31, 2021 and December 31, 2020, respectively.
Comparison of Financial Condition at March 31, 2021 and December 31, 2020
Assets. Total assets increased $62.3 million to $2.18 billion at March 31, 2021, compared to $2.11 billion at December 31, 2020, primarily due to increases in loans receivable, net of $48.1 million, securities available-for-sale of $23.3 million, other assets of $5.0 million, and servicing rights of $3.1 million, partially offset by decreases in loans held for sale of $10.2 million and total cash and cash equivalents of $6.1 million. The increases in total assets were primarily funded by deposit growth and net proceeds from the issuance of subordinated notes during the three months ended March 31, 2021.
Loans receivable, net increased $48.1 million to $1.59 billion at March 31, 2021, from $1.54 billion at December 31, 2020. Total real estate loans increased $6.3 million, including increases in construction and development loans of $24.7 million and commercial real estate loans of $4.1 million, partially offset by decreases in one-to-four-family portfolio loans of $11.8 million, multi-family loans of $9.0 million, and home equity loans of $1.7 million. Undisbursed construction and development loan commitments decreased $15.6 million to $128.1 million at March 31, 2021, as compared to $143.7 million at December 31, 2020. Consumer loans increased $7.7 million, primarily due to an increase of $8.4 million in indirect home improvement loans. Commercial business loans increased $36.9 million, primarily due to an increase in commercial and industrial loans of $37.5 million, including PPP loans originated during the quarter totaling $48.0 million partially offset by PPP loan forgiveness by the SBA of $26.1 million. The focused increase in commercial and industrial loans is tied to the Bank’s investment in our business lending platform, including employees to service business lending customers and cash management teams to support business deposits.
Loans held for sale, consisting of one-to-four-family loans, decreased by $10.2 million, or 6.1%, to $156.3 million at March 31, 2021, from $166.4 million at December 31, 2020. The Company continues to build its home lending operations and strategically add production staff in the markets we serve.
One-to-four-family loan originations included $404.0 million of loans originated for sale, $28.1 million of portfolio loans including first and second liens, and $2.3 million of loans brokered to other institutions. Purchase and refinance activity increased significantly over the last year in response to low market interest rates.
Originations of one-to-four-family loans to purchase and to refinance a home for the periods indicated were as follows:
| | | | | | | | | | | | | | | | | | | |
| | For the Three Months Ended | | | | For the Three Months Ended | | | | Year | | Year |
| | March 31, 2021 | | | | March 31, 2020 | | | | over Year | | over Year |
| | Amount | | Percent | | | | Amount | | Percent | | | | $ Change | | % Change |
Purchase | | $ | 185,461 | | 42.7 | % | | | $ | 114,652 | | 40.1 | % | | | $ | 70,809 | | 61.8 |
Refinance | | | 248,992 | | 57.3 | | | | | 170,950 | | 59.9 | | | | | 78,042 | | 45.7 |
Total | | $ | 434,453 | | 100.0 | % | | | $ | 285,602 | | 100.0 | % | | | $ | 148,851 | | 52.1 |
During the three months ended March 31, 2021, the Company sold $414.0 million of one-to-four-family loans compared to sales of $212.4 million for the same period one year ago. Gross margins on home loan sales increased to 4.60% for the three months ended March 31, 2021, compared to 3.50% for the three months ended March 31, 2020. Gross margins are defined as the margin on loans sold without the impact of deferred costs.
The ALLL was $27.4 million, or 1.68% of gross loans receivable, excluding loans held for sale at March 31, 2021, compared to $26.2 million, or 1.66% of gross loans receivable, excluding loans held for sale at December 31, 2020. Substandard loans increased $3.3 million to $20.9 million at March 31, 2021, compared to $17.6 million at December 31,