Amendment of Circular CSSF 18/703 on semi-annual reporting of borrower related residential real estate indicators

Circular CSSF 26/908
Amendment of Circular CSSF
18/703 on the introduction of a semi-annual reporting of borrower related residential real estate indicators

CIRCULAR CSSF 26/908
2/2
Circular CSSF 26/908
Amendment of Circular CSSF 18/703 on the introduction of a semi￾annual reporting of borrower related residential real estate indicators To all lenders in residential real estate Luxembourg, 25 March 2026 Ladies and Gentlemen, The objective of this circular is to modify Circular CSSF 18/703 as amended by Circular CSSF 20/737 and 21/772. To facilitate reading, changes are presented in the Annex in a ‘track changes’ format. The amendments primarily concern the treatment of rental income in the calculation of borrower income, updates to regulatory references, and revisions to reporting processes and submission channels. This circular is applicable as of its publication date. Pascale TOUSSING Director Claude WAMPACH Director Marco ZWICK Director Jean-Pierre FABER Director Claude MARX Director General
Annex Circular CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772
and CSSF 26/908

Circular CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 Introduction of a semi-annual reporting of borrower related residential real estate indicators

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 2/11 Circular CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 Introduction of a semi-annual reporting of borrower related residential real estate indicators To all lenders in residential real estate Luxembourg, 17 December 2018 Ladies and Gentlemen, The objective of this circular is to introduce a macroprudential risk monitoring framework for the residential real estate sector in Luxembourg which is based on a recommendation by the European Systemic Risk Board (ESRB/2016/14 Recommendation of the European Systemic Risk Board of 31 October 2016 on closing real estate data gaps as amended by ESRB/2019/3– hereinafter “the ESRB recommendation”). The reporting aims at collecting indicators on lending standards in the residential real estate (RRE) market1 . The circular introduces definitions of these indicators that are collected via a dedicated template available on the CSSF website. 1 Please note that the recommendation ESRB 2016/14 as amended by ESRB/2019/3 also covers data gaps regarding commercial real estate (CRE) lending. CRE data is not covered by this circular.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 3/11

1. Scope
   The scope of the data collection refers to loans taken for the purpose of purchasing residential real estate in Luxembourg, and that are secured by real estate collateral located in Luxembourg2 . Residential real estate includes existing dwellings, dwellings to be built (as per contract) or land that can be used for the construction of residential real estate dwellings. Loans that are granted to a legal entity should not be included in the reporting. This implies that loans granted indirectly to natural persons for investment purposes through ‘Société civile immobilières’ or SOPARFIs are excluded from the reporting. It should be noted that real estate credit provided to such entities falls under the scope of commercial real estate (CRE), and related indicators are part of a dedicated reporting, and in the AnaCredit reporting.
2. Process
   This circular specifies the residential real estate data that will be collected through a dedicated RRE data template. The data will be collected by the CSSF semi-annually in the months of April and October each year. The reference date for the data collection will be the 31st of December and the 30th of June respectively. The template specifying the data to be reported can be found on the CSSF website. Lenders that are active in the residential real estate sector are expected to be able to produce the requested data at a semi-annual frequency. This expectation pre-supposes the ability of lenders to store and process the relevant information in their information systems so that adequate reports can be extracted regularly. 2 The scope includes loans for owner-occupied or buy-to-let housing. Any loan contracted via a real estate savings’ plan (BSH, BHW, etc.) is part of the scope. Loans granted for the renovation of a property and that are secured by a real estate property are also included in the scope. Loans for renovation works that are not secured by a real estate property should not be included.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 4/11
3. Definitions of the indicators for borrower based measures
LTV- Loan to Value
At origination
𝐋𝐓𝐕 − 𝐎 =
𝐋
𝐕 𝐚𝐭 𝐨𝐫𝐢𝐠𝐢𝐧𝐚𝐭𝐢𝐨𝐧
Current
𝐋𝐓𝐕 − 𝐂 =
𝐋𝐜
𝐕 𝐜𝐮𝐫𝐫𝐞𝐧𝐭
Financed property
𝐋𝐓𝐕 − 𝐅𝐏 =
𝐋
𝐕 𝐨𝐟 𝐭𝐡𝐞 𝐟𝐢𝐧𝐚𝐧𝐜𝐞𝐝 𝐩𝐫𝐨𝐩𝐞𝐫𝐭𝐲 LSTI- Loan service to income At origination 𝐋𝐒𝐓𝐈 = 𝐋𝐒 𝐈 DSTI- Debt service to income At origination 𝐃𝐒𝐓𝐈 = 𝐃𝐒 𝐈 LTI- Loan to income At origination 𝐋𝐓𝐈 = 𝐋 𝐈 DTI- Debt to income At origination 𝐃𝐓𝐈 = 𝐃 𝐈 The LTV indicator can be ‘at origination’ or ‘current’. These concepts, taken from the ESRB recommendation correspond to, respectively, new credit exposures (flows) and outstanding credit exposures (stock). Therefore, LTV ‘at origination’ is to be computed for new loans, i.e. loans granted in the reference period of the reporting. Loans that have been granted before but were modified loans should not be included with the new loans.3 LTV ‘Current’ is to be computed for the complete stock of outstanding loans. Any loan modification such as a change in the interest rate type should 3 Loans being restructured due to considerations of unlikeliness to pays shall be considered as modified existing loans and thus be excluded from the new credit exposures (flows) but included in the outstanding credit exposures (stock).

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 5/11 be reported as an outstanding loan, except if the loan took over an existing loan from another lender. In such a case the loan can be considered as a new exposure.
4. Guidance on variables contained in the indicators
L - Loan
The variable L should contain all loans and loan tranches granted to the borrower, for the purpose of purchasing a residential real estate property, which can be existing or to be built. This loan must be secured by one or several real estate properties. The L should be aggregated by borrower and by financed property. This implies that:
(i) If the borrower is a couple (i.e. if the loan contract runs in two names) it is considered as a single borrower. (ii) If two or more properties are used as collateral, but the loan relates to a single property, one single indicator should be calculated. (iii) In case a bridge loan is granted along with another loan to finance a new property, the loans should be separated according to the property they finance. No reduction of L by credit risk mitigants is allowed in the context of the reporting. L is not to be reduced by the amount of, for example, state and/or personal guarantees the debtor receives, cash reserves, or similar. L is measured by the granted amount of each loan or tranche. The granted amount is the loan amount offered by the lender to the borrower as per contractual provisions and signed by the stakeholders concerned. Borrowers may have received one or more loan offers from different lenders but a contract becomes binding only upon signature by the borrower. The amount referred to in the signed contract should be reported by the lender as the granted loan amount. L includes all loans or loan tranches at the moment of loan origination, whereas Lc is measured as the outstanding amount of the loan or loan tranches at the reporting date, taking into account capital reimbursements, loan restructurings, new capital disbursements, incurred interest, and, in the case of loans in foreign currencies, changes in the exchange rate. V – Value The variable V should be computed on the basis of the value of the property (or properties) given as collateral. If several properties are securing a given loan, the values of these properties can be summed. It is not possible to use the mortgage value registered in a mortgage collateral register (“inscription hypothécaire”) nor the mortgage promise value (“mandat hypothécaire”) to obtain the value. V should be adjusted by the total amount of the outstanding RRE loan, disbursed or not, that is secured through ‘prior’ liens on the property. In cases where one or several higher ranked mortgages

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 6/11 exist on the property given as collateral, V is lowered by the mortgage value or the outstanding amount of a loan secured in first lien by this same property. V should not be adjusted for the presence of other credit risk mitigants. Other credit risk mitigants can generally be understood as additional pledges to secure the loan but which are not RRE collateral (such as a financial collateral pledge). V-Value of the financed property (in line with CSSF Regulation No 20-08) As a derogation of the above, the variable V in line with CSSF Regulation No 20-08 should be computed on the basis of the value of the financed (purchased) property at the time of the loan arrangement. We refer to this value as “Vfinanced property” (V_FP) and we ask separate statistics for the “LTV_FP”. The V financed property differs from the V only in cases where the financed (purchased) property is not the property (or not the only property) given as collateral. At origination The V at origination should be obtained at the loan origination and be measured as the lower of:
(i) the transaction value of the immovable property, or; (ii) the value as assessed by an independent external or internal appraiser at loan origination., in accordance with Articles 208(3) and, 229 of the CRR Regulation and Circular CSSF 22/824 concerning the application of the Guidelines of the European Banking Authority on Loan Origination and Monitoring (EBA/GL/2020/06) If only one value is available, this value may be used. In the case of renovation associated with the purchase of an existing property, the V at origination should be augmented by a fraction of the renovation costs with a range of 0% to 80% of their value as stated in the offer documents (“devis”). The lender should request this information from the borrower and document the provided evidence that allow for an estimation of the renovation costs. The lender should define internal policies to guide decisions on the fraction of renovation costs that will augment the value and follow them systematically. In the case of land purchase (“terrain”) with the purpose to build, the value of the land is augmented by an estimation of the construction costs based on the offer document/construction contract from the constructor. If, for some reason, the buyer/borrower cannot provide evidence on the estimation of future construction costs, the property value should be the price of the land. In the case of purchase of a property under development (“vente en l'état futur d'achèvement”, “VEFA”), the property value is the selling price of the project as agreed in the notarial deed or the sale contract. The VAT rate for VEFA is the rate applicable to the property concerned17%. V at origination should not be computed as the ‘long-term value’ because the value at origination aims at capturing credit standards at origination.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 7/11 Current The variable V current should be monitored and reviewed in accordance with Articles 208(3), and 229 of the CRR Regulation and Circular CSSF 22/824 concerning the application of the Guidelines of the European Banking Authority on Loan Origination and Monitoring (EBA/GL/2020/06)in accordance with Article 208(3) CRR. Therefore it should be assessed by an independent external or internal appraiser. The assessment can be made using either a valuation model or an RRE value index. (i) Using a valuation model: Such an approach requires lenders to collect and use information on each property on a regular basis in order to update their valuations when needed as well as follow the developments of economic fundamentals. (ii) Using a RRE value index: Such an index should be sufficiently granular with respect to geographical location (i.e. municipality) and type (i.e. new, old, apartment, house) of property; if such real estate value index is not available, a RRE value index sufficiently granular with respect to geographical location and type of property can be used after application of a suitably chosen mark-down to account for the depreciation of the property. Whatever the choice, the independence of the appraiser should be guaranteed. Independence in this context is to be understood in the spirit of Article 208(3)(b) CRR, i.e. independence from the credit granting decision process. For example, if the current value calculation is performed in-house, it should not be performed by the commercial agents but by a dedicated unit such as the Risk Management unit. Further elaborating on the independence requirement, the following cases can be differentiated:
(i) Valuation developed and applied in house: Employees of the lender can develop and perform such a valuation and the valuation will be considered independent as long as these employees are not commercial agents. (ii) Valuation developed by a third party and applied in house: In general, it can be assumed that a third party provider can be considered independent from the credit decision process. The independence criterion is satisfied when a third party provider develops the valuation method and a dedicated in house function other than the commercial function applies this method and performs the valuation. (iii) Valuation developed and applied by a third party: In general, it can be assumed that in cases the lender has overall outsourced the valuation to a third party, the independence criterion is satisfied. Finally, when a third party is involved, the requirements of Circular CSSF 12/552 (section 7.4) on outsourcing apply (i.e. final responsibility always lies with the lender). The computation of V current should be documented by the lender in a clear and transparent manner. Its valuation methodology is reported in the lender’s internal procedure documents and the lender is in a position to report details of its approach to the CSSF.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 8/11 I – Income The variable I should be obtained as the sum of all sources of recurring income of the borrower, minus taxes (net of tax rebates) and premiums, such as for health care, social security or medical insurance. If a couple borrows to buy a house, the sum of the couple’s income should be considered. No other income (parents, etc.) should be considered. Lenders should document all sources of income. The income should be computed on an annual basis. Therefore, in general, I should be computed as follows:
Disposable income = regular employee income (excluding bonuses, including contractually agreed payments like e.g. 13th month salary) + self-employment income+ rental income – taxes - social security contributions The rental income should be determined from the information that is available to banks. If precise information is not available, a best estimate of rental income should be provided by the reporting institution, and the methodology used to obtain it should be described. When the borrower’s income includes a significant share of income derived from other forms of investments, it is possible to deviate from this formula.In cases where the borrower’s income contains a significant share of investment income, it is possible to deviate from this formula. The lender should apply appropriate haircuts to account for the irregularity of certain types of income. The EBA Guidelines on loan origination and monitoring (EBA/GL/2020/06) as well as Circular CSSF 22/824 transposing these guidelines remain applicable with regard to the calculation of the variable I.Lenders calculating income in accordance with EBA guidelines on creditworthiness assessment (EBA/GL/2015/11) points 4.1-4.4 and with Art. L. 226-12 of the Luxembourg law of 23 December 2016 transposing Directive 2014/17/EU of the European Parliament and the Council of 4 February 2014 (“The Mortgage Credit Directive”), can follow this practice for the calculation of the variable I. D – Debt The variable D should be obtained as the total debt amount of the borrower at the moment of origination. D should include all the loans contracted by the borrower, including loans contracted in other credit institutions and for other purposes than the purchase of real estate. For instance, consumer loans should be attached to D, even if they are not secured by real estate collateral. Lenders are required to ask the borrower for any existing debt contracted and to document it. DS and LS – Debt service and loan service The variable LS contains the annual amount of loan servicing costs of the RRE loan at the moment of origination. LS should include the borrower’s effective annual payments made to service the loan. Therefore, it includes both the interest and the principal repayment of all loan tranches associated with one real estate property. Loan servicing costs should be calculated by borrower and by financed property. For bridge loans only interest payments are included in LS. The variable DS should be obtained as the annual amount of debt servicing costs of the total debt of the borrower at the moment of origination. DS should include both the interest and the principal

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 9/11 repayment of all types of loans of the borrower, including loans granted by the real estate lender and others, whether secured by real estate or not. In specific cases, the following considerations apply for the calculation of DS and LS:
(i) Non-amortizing loans where only interests are paid during the lifetime of the loan, while the principal is paid at maturity should be treated exactly as such. At origination the DS/LS variables would therefore contain interest payments only. (ii) Where part of the debt reimbursement is deferred for a certain period at the beginning of the loan contract (e.g. a “moratoire”), the total servicing cost of the loan is the amount that will fall due once the loan repayment starts. (iii) Bullet loans, where no interest nor principal payments are paid during the lifetime of the loan should not give rise to the calculation of a LS nor DS. (iv) If contracted for the purpose of a real estate purchase or renovation, saving plans payments should be included in the LS or DS. A savings plan (contrat d'Èpargne logement) is contracted for the purchase, the construction or renovation of real estate properties and implies the regular payment of capital into a fund or to the lender. Moreover, these payments contribute to the repayment of the loan and should be considered as loan service costs. LS (or DS) can thus be computed by considering the total amount of annual contributions to the saving plan. Maturity at origination Maturity at origination means the term of the RRE loan contract expressed in years at the moment of loan origination. The maturity to be reported should be one referred to in the signed contract by the concerned stakeholders. Bridge loans Bridge loans are non-amortizing real estate loans that are used to facilitate a transaction. They can be used to finance the sale of an existing property for a limited period of time or to bridge the gap between the moment of granting a mortgage and the receipt of some amount of cash by the borrower that would be paid into the real estate purchase at a later date. In general, bridge loans should not exceed a maturity of 18 months and be non-renewable. In case of new constructions, bridge loans may extend to 24 months of maturity. Amount and number For each of the indicators illustrated above, lenders are expected to report the amount of exposures they have with a given indicator. When a number is required, it refers to the number of contracts with a given indicator.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 10/11 Standards for transmission The filled-in templates have to be submitted to the CSSF at the defined reporting date through one of the currently accepted transmission channels E-file or SOFiE. Reports referring to end-December data are to be submitted by the 15th of April each year (or the preceding business day if this date falls on a holiday). Reports referring to end-June data are to be submitted by 15th of October each year (or the preceding business day if this date falls on a holiday). Starting from 2024, lenders may submit their data using one of the following two methods:

• A dedicated eDesk approach accessible via the eDesk Portal;
• The API solution based on the submission of a structured exchange file (JSON format) via the
  S3 (“Simple Storage Service”) protocol.
  The template can be found on the CSSF website. Reporting institutions should always be sure to submit the latest version of the template. In case of changes to the template the CSSF will duly inform reporting institutions. Templates should be named as follows:
  ESPREP-ENNNN-YYYY-MM-RES
  Where
• ESP is the reporting type standing for special enquiries
• REP is the direction standing for Report
• E is the entity type, e.g. B for Banks
• NNNN is the identification number of the bank, i.e. 0001...9999
• YYYY is the cut-off year of the data (reporting reference period)
• MM is the cut-off month of the data (reporting reference period)
• RES is the table reference.
  For further specification on the CSSF’s naming conventions, please refer to information published on the CSSF website.

CIRCULAR CSSF 18/703 as amended by Circulars CSSF 20/737, CSSF 21/772 and CSSF 26/908 11/11 Contact For any questions regarding this circular, please please contact the macroprudential policy division of the CSSF’s SSM coordination department (email: macropru@cssf.lu). For technical issues or questions related to the eDesk platform, please contact edesk@cssf.lu. This circular enters into force with immediate effect. Pascale TOUSSING Director Claude WAMPACH Director Marco ZWICK Director Jean-Pierre FABER Director Claude MARX Director General