Deferred Tax Assets. We account for income taxes under the asset/liability method. Deferred tax assets are recognized for the future consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, as well as operating loss and tax credit carry-forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period indicated by the enactment date. A valuation allowance is established for deferred tax assets when, in the judgment of management, it is more likely than not that such deferred tax assets will not become realizable. The judgment about the level of future taxable income is dependent to a great extent on matters that may, at least in part, be beyond our control. It is at least reasonably possible that management’s judgment about the need for the existing valuation allowance for deferred tax assets could change in the near term.
Balance Sheet Analysis
Assets. At December 31, 2018, our assets totaled $150.3 million, an increase of $3.0 million, or 2.0%, from total assets of $147.3 million at December 31, 2017. The increase in assets for the year ended December 31, 2018 was due mainly to a $6.0 million, or 6.4%, increase in loans, net of unearned fees, and a $118,000, or 2.6%, increase in Bank owned life insurance, partially offset by a $3.1 million, or 9.2%, decrease in total investment securities, a $747,000, or 60.0%, decrease in other interest bearing deposits and a $554,000, or 7.0%, decrease in cash and cash equivalents. Management has focused on increasing yields earned on interest earning assets by increasing loan production and decreasing the amount of lower earning assets.
Loans. At December 31, 2018, residential mortgage loans totaled $78.4 million, or 76.8% of the total loan portfolio compared to $75.5 million, or 78.8% of the total loan portfolio at December 31, 2017. Residential mortgage loans increased by $2.9 million, or 3.8%, during the year ended December 31, 2018 as we originated more loans than the repayments received on these loans.
Non-residential real estate loans totaled $15.7 million and represented 15.4% of total loans at December 31, 2018, compared to $13.2 million, or 13.8% of total loans, at December 31, 2017. Non-residential real estate loans increased by $2.5 million, or 19.2%, during the year ended December 31, 2018 as we continue to originate these loans while experiencing low levels of repayments since we just started originating these loans during the beginning of 2017.
Construction and land loans totaled $3.0 million, and represented 2.9% of total loans, at December 31, 2018, compared to $3.2 million, or 3.4% of total loans, at December 31, 2017. At December 31, 2018, we had $2.0 million of construction loans, amounting to 65.9% of our construction and land loan portfolio, and $1.0 million of land loans, amounting to 34.1% of our construction and land loan portfolio.
Home equity lines of credit, all of which are secured by residential properties, totaled $2.7 million, and represented 2.6% of total loans, at December 31, 2018, compared to $3.5 million, or 3.6% of total loans, at December 31, 2017. The level of home equity lines of credit decreased due to the decreasing level of interest in this product as the new tax laws have impacted customers’ use of this product.
Our non-real estate loans consist of consumer loans, all of which are loans to depositors, secured by savings and commercial and industrial (C&I) loans secured by equipment or deposit accounts. Such loans totaled $2.3 million at December 31, 2018, representing 2.3% of the loan portfolio.
Securities. At December 31, 2018, our securities held-to-maturity decreased by $608,000, or 3.5%, from $17.4 million at December 31, 2017 to $16.8 million at December 31, 2018. Securities held-to-maturity at December 31, 2018 consisted of U.S. Agency bonds and mortgage-backed securities issued by U.S. Government Agencies such as Freddie Mac, Fannie Mae and Ginnie Mae. At December 31, 2018, our securities available-for-sale, recorded at fair value, decreased by $2.5 million, or 15.1%, from $16.6 million at December 31, 2017 to $14.1 million at December 31, 2018. Securities available-for-sale at December 31, 2018 consisted of U.S. Agency bonds, mortgage-backed securities, including collateralized mortgage obligations issued by U.S. Government Agencies such as Freddie Mac, Fannie Mae and Ginnie Mae, and a