Exhibit 99.1

ONE LIBERTY PROPERTIES REPORTS THIRD QUARTER 2023 RESULTS

— Rental Income Grew 4.7 % Year-over-Year —

— Repurchases $2.5 Million of Shares Subsequent to Quarter End and $9.1 Million in 2023 —

GREAT NECK, New York, November 6, 2023 — One Liberty Properties, Inc. (NYSE: OLP), a real estate investment trust focused on net leased properties, today announced operating results for the quarter ended September 30, 2023.

We are pleased that our efforts to transform our portfolio towards industrial ownership is producing the growth we had anticipated. This is marked by our second consecutive quarter of year-over-year rental income growth of over 4%. We also grew operating cashflow in the third quarter over the same prior year quarter,” stated Patrick J. Callan, Jr., President and Chief Executive Officer of One Liberty. “We are proud that we have produced these positive accomplishments in a challenging macro-economic environment. As we look forward, we believe that the industrial property acquisition we made in the quarter along with our ongoing property sales, positions us to build on the progress we have made this year.”

Operating Results:

Rental income grew 4.7 % to $22.5 million in the third quarter of 2023, from $21.5 million in the third quarter of 2022. Approximately $580,000 of the growth is due to the net impact of acquisitions and dispositions and the balance is due to a net increase in same-store rental income.

Total operating expenses in the third quarter of 2023 were $14.3 million compared to $13.8 million for the third quarter of 2022. Contributing to the change was a $340,000 increase in depreciation and amortization expense primarily related to properties acquired in 2022 and 2023.

Net income attributable to One Liberty in the third quarter of 2023 was $2.7 million, or $0.12 per diluted share, compared to $7.2 million, or $0.34 per diluted share, in the third quarter of 2022. Net income for the 2023 quarter was negatively impacted by the $905,000, or $0.04 per share, equity in loss of unconsolidated joint ventures, which includes $850,000, or $0.04 per share, related to the contracted for sale of the Manahawkin, NJ shopping center and a $401,000, or $0.02 per share, increase in interest expense, offset by a $332,000, or $0.02 per share, gain from the sale of a restaurant property. Net income for the 2022 quarter benefited from a $4.1 million, or $0.19 per diluted share, gain on the sale of a property.

Funds from Operations, or FFO1, was $9.7 million, or $0.45 per diluted share, for the third quarter of 2023, compared to $9.2 million, or $0.44 diluted share, in the third quarter of 2022. The change is due primarily to the increase in rental income offset primarily by the increase in interest expense.

Adjusted Funds from Operations, or AFFO, was $10.5 million, or $0.49 per diluted share for the quarter ended September 30, 2023, compared to $10.1 million, or $0.48 per diluted share, for the quarter ended September 30, 2022. The change is due primarily to the factors contributing to the increase in FFO.

Balance Sheet:

At September 30, 2023, the Company had $5.5 million of cash and cash equivalents, total assets of $767.8 million, total debt of $428.6 million, and total stockholders’ equity of $302.1 million.

At November 1, 2023, One Liberty had $22.5 million outstanding on its credit facility and its available liquidity was approximately $83.6 million, including approximately $6.1 million of cash and cash equivalents (including the credit facility’s required $3.0 million average deposit maintenance balance) and $77.5 million available under its credit facility.

Recent Transactions and Events:

During the quarter ended September 30, 2023:

Stock Repurchase Activity

In 2023, the Company repurchased $9.1 million of shares of common stock, including $2.5 million of shares purchased since October 1, 2023. The Company is currently authorized to repurchase approximately $8.7 million of shares.

Non-GAAP Financial Measures:

One Liberty computes FFO in accordance with the “White Paper on Funds from Operations” issued by the National Association of Real Estate Investment Trusts (“NAREIT”) and NAREIT’s related guidance. FFO is defined in the White Paper as net income (calculated in accordance with generally accepted accounting principles), excluding depreciation and amortization related to real estate, gains and losses from the sale of certain real estate assets, gains and losses from change in control, impairment write-downs of certain real estate assets and investments in entities where the impairment is directly attributable to decreases in the value of depreciable real estate held by the entity. Adjustments for unconsolidated partnerships and joint ventures are calculated to reflect FFO on the same basis.

One Liberty computes adjusted funds from operations, or AFFO, by adjusting from FFO for its straight-line rent accruals and amortization of lease intangibles, deducting from income additional rent from ground lease tenant, income on settlement of litigation, income on insurance recoveries from casualties, lease termination and assignment fees, and adding back amortization of restricted stock and restricted stock unit compensation expense, amortization of costs in connection with our financing activities (including our share of our unconsolidated joint ventures), debt prepayment costs and amortization of lease incentives and mortgage intangible assets. Since the NAREIT White Paper does not provide guidelines for computing AFFO, the computation of AFFO may vary from one REIT to another.

One Liberty believes that FFO and AFFO are useful and standard supplemental measures of the operating performance for equity REITs and are used frequently by securities analysts, investors and other interested parties in evaluating equity REITs, many of which present FFO and AFFO when reporting their operating results. FFO and AFFO are intended to exclude GAAP historical cost depreciation and amortization of real estate assets, which assumes that the value of real estate assets diminish predictability over time. In fact, real estate values have historically risen and fallen with market conditions. As a result, management believes that FFO and AFFO provide a performance measure that when compared year over year, should reflect the impact to operations from trends in occupancy rates, rental rates, operating costs, interest costs and other matters without the inclusion of depreciation and amortization, providing a perspective that may not be necessarily apparent from net income. Management also considers FFO and AFFO to be useful in evaluating potential property acquisitions.

FFO and AFFO do not represent net income or cash flows from operating, investing or financing activities as defined by GAAP. FFO and AFFO should not be an alternative to net income as a reliable measure of our operating performance nor as an alternative to cash flows as measures of liquidity. FFO and AFFO do not measure whether cash flow is sufficient to fund all of the Company’s cash needs.

Forward Looking Statement:

Certain information contained in this press release, together with other statements and information publicly disseminated by One Liberty Properties, Inc. is forward looking within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. We intend such forward looking statements to be covered by the safe harbor provision for forward looking statements contained in the Private Securities Litigation Reform Act of 1995 and include this statement for the purpose of complying with these safe harbor provisions. Forward looking statements, which are based on certain assumptions and describe our future plans, strategies and expectations, are generally identifiable by use of the words “may,” “will,” “could,” “believe,” “expect,” “intend,” “anticipate,” “estimate,” “project,” or similar expressions or variations thereof. Information regarding important factors that could cause actual outcomes or other events to differ materially from any such forward looking statements appear in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 and the reports filed with the Securities and Exchange Commission thereafter; in particular, the sections of such reports entitled “Cautionary Note Regarding Forward Looking Statements”, “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, included therein. In addition, estimates of rental income for 2023 exclude any related variable rent, anticipated property purchases and/or sales may not be completed during the period indicated or at all, and estimates of gains from property sales are subject to adjustment, among other things, because actual closing costs may differ from the estimated costs. You should not rely on forward-looking statements since they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond the Company’s control and which could materially affect the Company’s results of operations, financial condition, cash flows, performance or future achievements or events.

About One Liberty Properties:

One Liberty is a self-administered and self-managed real estate investment trust incorporated in Maryland in 1982. The Company acquires, owns and manages a geographically diversified portfolio consisting primarily of industrial and retail properties. Many of these properties are subject to long-term net leases under which the tenant is typically responsible for the property’s real estate taxes, insurance and ordinary maintenance and repairs.

Contact:

One Liberty Properties

Investor Relations

Phone: (516) 466-3100

www.1liberty.com

ONE LIBERTY PROPERTIES, INC.

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ONE LIBERTY PROPERTIES, INC. (NYSE: OLP)

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ONE LIBERTY PROPERTIES, INC. (NYSE: OLP)

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