Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Accounting The accompanying unaudited consolidated financial statements are presented in accordance with U.S. generally accepted accounting principles (“GAAP”). GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the dates of the unaudited consolidated financial statements and the amounts of revenues and expenses during the reporting periods. Actual amounts realized or paid could differ from those estimates. All significant intercompany accounts and transactions have been eliminated in consolidation. There have been no significant changes to the Company’s significant accounting policies during the three months ended March 31, 2023. The accompanying unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted according to such rules and regulations, although management believes that the disclosures are adequate to make the information presented not misleading. In the opinion of management, all adjustments and eliminations necessary for the fair presentation of the Company’s financial position as of March 31, 2023 and December 31, 2022 and results of operations for the three months ended March 31, 2023 and 2022 have been included. Such adjustments are normal and recurring in nature. The unaudited information included in this quarterly report on Form 10-Q should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2022, and notes thereto in its Annual Report on Form 10-K filed with the SEC on March 31, 2023. Use of Estimates and Assumptions The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting periods. It is at least reasonably possible that these estimates could change in the near term. Estimates are inherently subjective in nature and actual results could differ from our estimates and the differences could be material. Principles of Consolidation The Company accounts for subsidiary partnerships in which it holds an ownership interest in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, Consolidation. The Company first evaluates whether each entity is a variable interest entity (“VIE”). Under the VIE model, the Company consolidates an entity when it has power to direct the activities of the VIE and the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. Under the voting model, the Company consolidates an entity when it controls the entity through ownership of a majority voting interest. As of March 31, 2023, the Company has determined it must consolidate the OP and the Subsidiary OPs under the VIE model as it was determined the Company both controls the direct activities of the OP and Subsidiary OPs and possesses the right to receive benefits that could potentially be significant to the OP and Subsidiary OPs. The consolidated financial statements include the accounts of the Company and its subsidiaries, including the OP and its subsidiaries. The Company’s sole significant asset is its investment in the OP, and consequently, substantially all of the Company’s assets and liabilities represent those assets and liabilities of the OP. Variable Interest Entities The Company evaluates all of its interests in VIEs for consolidation. When the Company’s interests are determined to be variable interests, the Company assesses whether it is deemed to be the primary beneficiary of the VIE. The primary beneficiary of a VIE is required to consolidate the VIE. FASB ASC Topic 810, Consolidation , defines the primary beneficiary as the party that has both (i) the power to direct the activities of the VIE that most significantly impact its economic performance, and (ii) the obligation to absorb losses and the right to receive benefits from the VIE which could be potentially significant. The Company considers its variable interests, as well as any variable interests of its related parties in making this determination. Where both of these factors are present, the Company is deemed to be the primary beneficiary, and it consolidates the VIE. Where either one of these factors is not present, the Company is not the primary beneficiary, and it does not consolidate the VIE (see Note 6). CMBS Trusts The Company consolidates the trusts that issue beneficial ownership interests in mortgage loans secured by commercial real estate (commonly known as CMBS) when the Company holds a variable interest in, and management considers the Company to be the primary beneficiary of, those trusts. Management believes the performance of the assets that underlie CMBS issuances most significantly impact the economic performance of the trust, and the primary beneficiary is generally the entity that conducts activities that most significantly impact the performance of the underlying assets. In particular, the most subordinate tranches of CMBS expose the holder to greater variability of economic performance when compared to more senior tranches since the subordinate tranches absorb a disproportionately higher amount of the credit risk related to the underlying assets. Generally, a trust designates the most junior subordinate tranche outstanding as the controlling class, which entitles the holder of the controlling class to unilaterally appoint, remove and replace the special servicer for the trust. For the CMBS that the Company consolidates, the Company owns 100% of the most subordinate tranche of the securities. The subordinate tranche includes the controlling class and has the ability to remove and replace the special servicer. On the Consolidated Balance Sheets as of March 31, 2023, the Company consolidated each of the Freddie Mac K-Series securitization entities (the “CMBS Entities”) that were determined to be VIEs and for which the Company is the primary beneficiary. The CMBS Entities are independent of the Company, and the assets and liabilities of the CMBS Entities are not owned by and are not legal obligations of ours. Our exposure to the CMBS Entities is through the subordinated tranches. For financial reporting purposes, the underlying mortgage loans held by the trusts are recorded as a separate line item on the balance sheet under “Mortgage loans held in variable interest entities, at fair value.” The liabilities of the trusts consist solely of obligations to the CMBS holders of the consolidated trusts, excluding the CMBS B-Piece investments held by the Company. The liabilities are presented as “Bonds payable held in variable interest entities, at fair value” on the Consolidated Balance Sheets. The CMBS B-Pieces held by the Company, and the interest earned thereon are eliminated in consolidation. Management has elected the measurement alternative in ASC 810 to report the fair value of the assets and liabilities of the consolidated CMBS Entities in order to provide users of the financial statements with better information regarding the effects of credit risk and other market factors on the CMBS B-Pieces owned by the Company. Management has elected to show interest income and interest expense related to the CMBS Entities in aggregate with the change in fair value as “Change in net assets related to consolidated CMBS variable interest entities.” The residual difference between the fair value of the CMBS Entities’ assets and liabilities represents the Company’s investments in the CMBS B-Pieces at fair value. Investment in subsidiaries The Company conducts its operations through the OP, which directly or through a subsidiary, acts as the general partner of the Subsidiary OPs. The Subsidiary OPs own investments through limited liability companies that are SPEs which own investments directly. The OP is the sole member of the Mezz LLC, which owns investments directly. The OP has three classes of OP Units: Class A, Class B and Class C. Class A OP Units and Class B OP Units each have 50.0% of the voting power of the OP Units and Class C OP Units have no voting power. Each Class A OP Unit, Class B OP Unit and Class C OP Unit otherwise represents substantially the same economic interest in the OP. The Company is the majority limited partner of the OP in terms of economic interests, holding approximately 83.41% of the OP Units in the OP as of March 31, 2023 which represent 100% of the Class A OP Units, and the OP GP must generally receive approval of the Board to take any actions. As such, the Company consolidates the OP. The Company consolidates the SPEs where it is the primary beneficiary, as well as any VIEs where it is the primary beneficiary. All of the investments the SPEs own are consolidated in the consolidated financial statements. Generally, the assets of each entity can only be used to settle obligations of that particular entity, and the creditors of each entity have no recourse to the assets of other entities or the Company notwithstanding equity pledges various lenders may have in certain entities or guarantees provided by certain entities. As of March 31, 2023, there are no outstanding redeemable noncontrolling interests issued by the Subsidiary OPs. Redeemable Noncontrolling Interests Noncontrolling interests represent the ownership interests in consolidated subsidiaries held by entities other than the Company. Those noncontrolling interests that the holder is allowed to redeem before liquidation or termination of the entity that issued those interests are considered redeemable noncontrolling interests. The OP and the Subsidiary OPs have issued redeemable noncontrolling interests classified on the Consolidated Balance Sheets as temporary equity in accordance with ASC 480. This is presented as “Redeemable noncontrolling interests in the OP” on the Consolidated Balance Sheets and their share of “Net Income (Loss)” as “Net Income (Loss) attributable to redeemable noncontrolling interests” in the accompanying Consolidated Statements of Operations. The redeemable noncontrolling interests were initially measured at the fair value of the contributed assets in accordance with ASC 805-50. The redeemable noncontrolling interests will be adjusted to their redemption value if such value exceeds the carrying value of the redeemable noncontrolling interests. Capital contributions, distributions and profits and losses are allocated to the redeemable noncontrolling interests in accordance with the terms of the partnership agreements of the Subsidiary OPs and the OP. Acquisition Accounting The Company accounts for the assets acquired in the Formation Transaction as asset acquisitions pursuant to ASC 805-50, rather than as business combinations. Substantially all of the fair value of the assets acquired are concentrated in a group of similar identifiable assets, i.e. the SFR Loans represent one acquisition of similar identifiable assets, and the acquisition of the CMBS B-Pieces represents an additional acquisition of similar identifiable assets. Additionally, there were no corresponding in-place workforce, servicing platforms or any other item that could be considered an input or process associated with these assets. As such, the SFR Loans and the CMBS B-Pieces do not constitute businesses as defined by ASC 805-10-55. Cash, Cash Equivalents and Restricted Cash The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents. Cash and cash equivalents are stated at cost, which approximates fair value. Substantially all amounts on deposit with major financial institutions exceed insured limits. From time to time, the Company may have to post cash collateral to satisfy margin calls due to changes in fair value of the underlying collateral subject to master repurchase agreements. This cash is listed as restricted cash on the Consolidated Balance Sheets. Restricted cash is also stated at cost, which approximates fair value. Mortgage and Other Loans Held-For-Investment, net Loans that are held-for-investment are carried at their aggregate outstanding face amount, net of applicable (i) unamortized origination or acquisition premium and discounts, (ii) unamortized deferred fees and other direct loan origination costs, (iii) valuation allowance for credit losses and (iv) write-downs of impaired loans. The effective interest method is used to amortize origination or acquisition premiums and discounts and deferred fees or other direct loan origination costs. In general, an increase in prepayment rates accelerates the amortization of purchase premiums, thereby reducing the interest income earned on the assets. Conversely, discounts on such assets are accreted into interest income. In general, an increase in prepayment rates accelerates the accretion of purchase discounts, thereby increasing the interest income earned on the assets. Purchase Price Allocation The Company considers the acquisition of real estate investments as asset acquisitions. Upon acquisition of a property, the purchase price and related acquisition costs (“total consideration”) are allocated to land, buildings, improvements, furniture, fixtures, and equipment and intangible lease assets, in accordance with FASB ASC 805, Business Combinations . Acquisition costs are capitalized in accordance with FASB ASC 805. The allocation of total consideration, which is determined using inputs that are classified within Level 3 of the fair value hierarchy established by FASB ASC 820, Fair Value Measurement and Disclosures (“ASC 820”) (see Note 11), is based on management’s estimate of the property’s “as-if” vacant fair value and is calculated by using all available information such as the replacement cost of such asset, appraisals, property condition reports, market data and other related information. The allocation of the total consideration to intangible lease assets represents the value associated with the in-place leases, which may include lost rent, leasing commissions, legal and other related costs, which the Company, as buyer of the property, did not have to incur to obtain the residents. If any debt is assumed in an acquisition, the difference between the fair value, which is estimated using inputs that are classified within Level 2 of the fair value hierarchy, and the face value of debt is recorded as a premium or discount and amortized as interest expense over the life of the debt assumed. Real estate assets, including land, buildings, improvements, furniture, fixtures and equipment, and intangible lease assets are stated at historical cost less accumulated depreciation and amortization. Costs incurred in making repairs and maintaining real estate assets are expensed as incurred. Expenditures for improvements, renovations and replacements are capitalized at cost. Real estate-related depreciation and amortization are computed on a straight-line basis over the estimated useful lives as described in the following table: Land Not depreciated Buildings 30 years Improvements 15 years Furniture, fixtures, and equipment 3 years Intangible lease assets 6 months Post-acquisition, construction in progress includes the cost of renovation projects being performed at the various properties. Once a project is complete, the historical cost of the renovation is placed into service in one of the categories above depending on the type of renovation project and is depreciated over the estimated useful lives as described in the table above. Secured Financing and Master Repurchase Agreements The Company's borrowings under secured financing agreements and master repurchase agreements are treated as collateralized financing arrangements carried at their contractual amounts, net of unamortized debt issuance costs, if any. Income Recognition Interest Income - Loans and mortgage loans held-for-investment, CMBS structured pass-through certificates, mortgage loans held in variable interest entities, bridge loans, MSCR Notes and mortgage backed securities where the Company expects to collect the contractual interest and principal payments are considered to be performing loans. The Company recognizes income on performing loans in accordance with the terms of the loan on an accrual basis. Interest income also includes amortization of loan premiums or discounts and loan origination costs and prepayment penalties. Realized Gain (Loss) on Investments - The Company recognizes the excess, or deficiency, of net proceeds received, less the carrying value of such investments, as realized gains or losses, respectively. The Company reverses cumulative, unrealized gains or losses previously reported in its Consolidated Statements of Operations with respect to the investment sold at the time of the sale. Rental Revenue The Company owns one multifamily property whereby its primary operations consist of rental income earned from its residents under lease agreements typically with terms of one year or less. See Note 9 for additional information regarding this multifamily property. Rental income is recognized when earned. This policy effectively results in income recognition on the straight-line method over the related terms of the leases. The Company records an allowance to reflect revenue that may not be collectable. This is recorded through a provision for bad debts, which is included in revenues from consolidated real estate owned in the accompanying Consolidated Statements of Operations. Resident reimbursements and other income consist of charges billed to residents for utilities, carport and garage rental, pets and administrative, application and other fees and are recognized when earned. The Company implemented the provisions of Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”) as of December 31, 2021. The adoption of ASU 2014-09 did not have a material impact on the Company’s consolidated financial statements as a substantial portion of its revenue consists of rental income from leasing arrangements, which is specifically excluded from ASU 2014-09. In July 2018, the FASB issued ASU 2018-11, Leases – Targeted Improvements (“ASU 2018-11”), which provides entities with relief from the costs of implementing certain aspects of ASU 2016-02. ASU 2018-11 provides a practical expedient that allows lessors to not separate lease and non-lease components in a contract and allocate the consideration in the contract to the separate components if both (i) the timing and pattern of revenue recognition for the non-lease component and the related lease component are the same and (ii) the combined single lease component would be classified as an operating lease. The Company elected the practical expedient to account for lease and non-lease components as a single component in lease contracts where the Company is the lessor. The Company implemented the provisions of ASU 2018-11 and 2016-02, collectively Topic 842 Leases (“ASC 842”), effective January 1, 2022. The Company presents the disclosure of leases in the consolidated statements of operations and began presenting all rentals and reimbursements from tenants within revenues and expenses from consolidated real estate owned on the Consolidated Statements of Operations (Note 9). Expense Recognition Interest expense, in accordance with the Company’s financing agreements, is recorded on the accrual basis. General and administrative expenses are expensed as incurred. Allowance for Credit Losses In prior periods, the Company, with the assistance of an independent valuations firm, performed a quarterly evaluation of loans classified as held for investment for impairment on a loan-by-loan basis in accordance with ASC 310-10-35, Receivables, Subsequent Measurement (“ASC 310-10-35”). If the Company determined that it was probable that it would be unable to collect all amounts owed according to the contractual terms of a loan, impairment of that loan was indicated. If a loan was considered to be impaired, the Company would establish an allowance for loan losses, through a valuation provision in earnings that reduced carrying value of the loan to the present value of expected future cash flows discounted at the loan’s contractual effective rate or the fair value of the collateral, if repayment was expected solely from the collateral. For non-impaired loans with no specific allowance the Company determined an allowance for loan losses in accordance with ASC 450-20, Loss Contingencies (“ASC 450-20”), which represented management’s best estimate of incurred losses inherent in the portfolio at the balance sheet date, excluding impaired loans and loans carried at fair value. Management considered quantitative factors likely to cause estimated credit losses, including default rate and loss severity rates. The Company also evaluated qualitative factors such as macroeconomic conditions, evaluations of underlying collateral, trends in delinquencies and non-performing assets. Increases to (or reversals of) the allowance for loan loss for the fiscal year ended December 31, 2022 are included in “Loan loss (provision)” on the accompanying Consolidated Statements of Operations. In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses on Financial Instruments (“ASU 2016-13”), which establishes credit losses on certain types of financial instruments. The new approach changes the impairment model for most financial assets and requires the use of a current expected credit loss ("CECL") model for financial instruments measured at amortized cost and certain other instruments. This model applies to trade and other receivables, loans, debt securities, net investments in leases and off-balance sheet credit exposures (such as loan commitments, standby letters of credit and financial guarantees not accounted for as insurance) and requires entities to estimate the lifetime expected credit loss on such instruments and record an allowance that represents the portion of the amortized cost basis that the entity does not expect to collect. We adopted the guidance as of January 1, 2023. The implementation process included the utilization of loan loss forecasting models, updates to our loan credit loss policy documentation, changes to internal reporting processes and related internal controls, and overall operational readiness for our adoption of the new standard. We have implemented loan loss forecasting models for estimating expected life-time credit losses, at the individual loan level, for our loan portfolio. The CECL forecasting methods used by the Company include (i) a probability of default and loss given default method using underlying third-party CMBS/Commercial Real Estate loan database with historical loan losses from 1998 to 2022, and (ii) probability weighted expected cash flow method, depending on the type of loan and the availability of relevant historical market loan loss data. We might use other acceptable alternative approaches in the future depending on, among other factors, the type of loan, underlying collateral, and availability of relevant historical market loan loss data. Significant inputs to our forecasting methods include (i) key loan-specific inputs such as loan-to-value, vintage year, loan-term, underlying property type, occupancy, geographic location, performance against the underwritten business plan, and our internal loan risk rating, and (ii) a macro-economic environment forecast. The allowance for loan and lease losses reserve as of December 31, 2022, was $0.7 million and the CECL reserve as of January 1, 2023, is $2.3 million. As such, the cumulative effect of adoption of ASU 2016-13 is a $1.6 million reduction in retained earnings. The reversal of (provision for) credit losses of $0.034 million is included in other income on the accompanying Consolidated Statements of Operations, resulting in a March 31, 2023 ending allowance for credit loss of $2.3 million. Significant judgment is required in determining impairment and in estimating the resulting loss allowance, and actual losses, if any, could materially differ from those estimates. The Company performs a quarterly review of the portfolio. In conjunction with this review, the Company assesses the risk factors of each loan, including, without limitation, loan-to-value ratio, debt yield, property type, geographic and local market dynamics, physical condition, collateral, cash-flow volatility, leasing and tenant profile, loan structure, exit plan and project sponsorship. Based on a 5-point scale, our loans are rated “1” through “5,” from least risk to greatest risk, respectively, which ratings are defined as follows: 1 – Outperform – Materially exceeds performance metrics (for example, technical milestones, occupancy, rents and net operating income) included in original or current credit underwriting and business plan; 2 – Exceeds Expectations – Collateral performance exceeds substantially all performance metrics included in original or current credit underwriting and business plan; 3 – Satisfactory – Collateral performance meets, or is on track to meet, underwriting; business plan is met or can reasonably be achieved; 4 – Underperformance – Collateral performance falls short of underwriting, material differences exist from business plan, or both; technical milestones have been missed; defaults may exist or may soon occur absent material improvement; and 5 – Risk of Impairment/Default – Collateral performance is significantly worse than underwriting; major variance from business plan; loan covenants or technical milestones have been breached; timely exit from loan via sale or refinancing is questionable. The Company regularly evaluates the extent and impact of any credit deterioration associated with the performance and/or value of the underlying collateral, as well as the financial and operating capability of the borrower. Specifically, the collateral’s operating results and any cash reserves are analyzed and used to assess (i) whether cash from operations is sufficient to cover the debt service requirements currently and into the future, (ii) the ability of the borrower to refinance the loan and/or (iii) the collateral’s liquidation value. The Company also evaluates the financial condition of any loan guarantors, as well as any changes in the borrower’s competency in managing and operating the collateral. In addition, the Company considers the overall economic environment, real estate or industry sector and geographic sub-market in which the borrower operates. Such impairment analyses are completed and reviewed by asset management and finance personnel who utilize various data sources, including (i) periodic financial data such as property operating statements, occupancy, tenant profile, rental rates, operating expenses, the borrower’s exit plan and capitalization and discount rates, (ii) site inspections and (iii) current credit spreads and discussions with market participants. The Company considers loans to be past-due when a monthly payment is due and unpaid for 60 days or more. Loans will be placed on nonaccrual status and considered non-performing when full payment of principal and interest is in doubt, which generally occurs when they become 120 days or more past-due unless the loan is both well secured and in the process of collection. Accrual of interest on individual loans is discontinued when management believes that, after considering economic and business conditions and collection efforts, the borrower’s financial condition is such that collection of interest is doubtful. Our policy is to cease accruing interest when a loan’s delinquency exceeds 120 days. All interest accrued but not collected for loans that are placed on nonaccrual status or subsequently charged-off are reversed against interest income. Income is subsequently recognized on the cash basis until, in management’s judgment, the borrower’s ability to make periodic principal and interest payments returns and future payments are reasonably assured, in which case the loan is returned to accrual status. For individual loans, a troubled debt restructuring is a formal restructuring of a loan where, for economic or legal reasons related to the borrower’s financial difficulties, a concession that would not otherwise be considered is granted to the borrower. The concession may be granted in various forms, including providing a below-market interest rate, a reduction in the loan balance or accrued interest, an extension of the maturity date or a combination of these. An individual loan that has had a troubled debt restructuring is considered to be impaired and is subject to the relevant accounting for impaired loans. As of and for the three months ended March 31, 2023, the Company had no loan modifications, and, thus no troubled debt restructurings. A loan is written off when it is no longer realizable and/or it is legally discharged. The Company will evaluate acquired loans and debt securities for which it is probable at acquisition that all contractually required payments will not be collected in accordance with ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality . During the three months ended March 31, 2023, there were no loans acquired with deteriorated credit quality. Fair Value GAAP requires the categorization of the fair value of financial instruments into three broad levels that form a hierarchy based on the transparency of inputs to the valuation. Level 1 – Inputs are adjusted, quoted prices in active markets for identical assets or liabilities at the measurement date. Level 2 – Inputs are other than quoted prices that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar instruments in active markets, and inputs that are observable for the asset or liability (other than quoted prices), such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 – Inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, related market activity for the asset or liability. The Company follows this hierarchy for our financial instruments. Classifications will be based on the lowest level of input that is significant to the fair value measurement. The Company reviews the valuation of Level 3 financial instruments as part of our quarterly process. Valuation of Consolidated VIEs The Company reports the financial assets and liabilities of each consolidated CMBS trust at fair value using the measurement alternative included in ASU No. 2014-13, Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity (“ASU 2014-13”). Pursuant to ASU 2014-13, both the financial assets and financial liabilities of the consolidated CMBS trusts are measured using the fair value of the financial liabilities (which are considered more observable than the fair value of the financial assets) and the equity of the CMBS trusts beneficially owned by the Company. As a result, the CMBS issued by the consolidated trusts, but not beneficially owned by us, are presented as financial liabilities in our consolidated financial statements, measured at their estimated fair value; the Company measured the financial assets as the total estimated fair value of the CMBS issued by the consolidated trust, regardless of whether such CMBS represent interests beneficially owned by the Company. Under the measurement alternative prescribed by ASU 2014-13, “Net income (loss)” reflects the economic interests in the consolidated CMBS beneficially owned by the Company, presented as “Change in net assets related to consolidated CMBS variable interest entities” in the Consolidated Statements of Operations, which includes applicable (1) changes in the fair value of CMBS beneficially owned by the Company, (2) interest income, interest expense and servicing fees earned from the CMBS trusts and (3) other residual returns or losses of the CMBS trusts, if any. Valuation Methodologies CMBS Trusts - The financial liabilities and equity of |