C-PACE assessment versus mortgage-funded improvements

Compare C-PACE with mortgage-funded improvements using the debt that must be replaced, not only the rate on the new work. If the mortgage alternative requires refinancing a favorable existing balance, the cost of that repricing may exceed the interest on the improvement money itself.

The example below assumes the property and scope qualify for the applicable C-PACE program and the existing mortgage lender consents. Those are conditions to verify, not conclusions produced by the cash-flow model. C-PACE availability, lien treatment, permitted improvements, and administration depend on the actual jurisdiction and program.

Identify whether the mortgage can remain in place

Assume the property has an $8 million interest-only mortgage at 4.50% with three years remaining. It needs $2 million of eligible improvements. A hypothetical C-PACE offer funds the $2 million and requires $180,000 of annual assessment payments, including its stipulated principal and financing components. Closing costs are $70,000.

The alternative lender will not provide a separate $2 million advance. Its offer requires a new $10 million interest-only mortgage at 7.50%, replacing the existing $8 million and funding the work. New closing costs are $50,000 and retiring the old mortgage costs another $200,000. Both alternatives are assumed to fund the same work on the same schedule.

The $180,000 C-PACE payment is an assumed complete annual payment, not an interest rate or current quote. A real assessment requires its full amortization schedule and exact billing dates. The modeled mortgage rate and costs are likewise invented.

Reconcile the combined annual payments

The first route uses $210,000 less annual cash for the initial three-year comparison period. Its initial transaction costs are $180,000 lower. Those differences arise partly from preserving the 4.50% mortgage on $8 million. Comparing only $180,000 of assessment payments with $150,000 of interest on an isolated $2 million at 7.50% would ignore the actual refinance the alternative lender requires.

Over three years, the nominal payment-and-cost totals are $1.69 million for the retained-mortgage/C-PACE route and $2.5 million for the replacement mortgage, a difference of $810,000. This is a cash-outflow comparison, not a total interest comparison: the C-PACE payment includes principal reduction while the hypothetical mortgages are interest only.

Apply one explicit combined-payment test

Assume a lender’s illustrative screening test accepts $900,000 of annual property cash and requires 1.25 times coverage of the combined scheduled payments. The numerator is defined before the C-PACE assessment for this exercise, and the assessment is included once in the payment denominator. Do not also deduct it from the numerator without reconciling the definition.

The retained-mortgage/C-PACE route has coverage of approximately 1.67 times; the replacement mortgage has 1.20 times. Under that stated screen, the replacement mortgage’s $750,000 payment exceeds the $720,000 supported amount.

At a 7.50% interest-only rate, $720,000 supports $9.6 million rather than $10 million. The mortgage alternative would therefore need another $400,000 of equity for the payoff-and-improvement uses, in addition to its $250,000 transaction costs, unless another applicable structure changes the result.

The 1.25 threshold and numerator are invented lender inputs. They are not a C-PACE program rule or a universal bank coverage definition. Actual underwriting may also apply value, combined leverage, maturity, savings, and other requirements.

Treat consent as a separate feasibility gate

The Connecticut Green Bank C-PACE FAQ describes its benefit-assessment mechanism, participating-municipality requirement, eligible improvements, and mortgage-lender consent. It expressly limits its discussion to the Green Bank’s role and procedures. This is an official program example, not a national rule for every C-PACE transaction.

For the subject property, obtain the actual program determination and the existing lender’s written consent to the proposed assessment. Confirm the amount, payment schedule, lien treatment, construction disbursements, and treatment upon sale or refinance. A capital provider’s willingness to fund does not establish mortgage consent.

If the lender does not consent, the favorable first column is unavailable unless a permitted amendment or other documented solution is reached. The model should then show the actual remaining options, such as another approved loan or owner equity, rather than retaining C-PACE as an assumed source.

Reopen the comparison when the old mortgage matures

The 4.50% mortgage advantage lasts only for its remaining three years. At that maturity, the replacement lender must evaluate the ongoing assessment alongside the property and proposed new debt. The C-PACE obligation has not disappeared because the first mortgage is being refinanced.

Suppose, only for a later screening scenario, the same $900,000 numerator and 1.25 combined-payment requirement apply. With the annual assessment still at $180,000, the mortgage portion has a $540,000 annual payment budget: $720,000 less $180,000. The amount of new mortgage supported then depends on its actual payment constant and other constraints. It is not automatically enough to repay the $8 million old balance.

Obtain the remaining assessment balance and applicable transfer or payoff terms from its schedule. Do not add the original $2 million to mortgage payoff if it remains in place, or assume it transfers without affecting buyer or lender review. Each exit path needs its own sources and uses.

The completed comparison should show the retained mortgage’s temporary pricing advantage, the combined annual obligation, the required approvals, and the next refinancing event. Funding eligible improvements can preserve useful existing debt, but the decision must remain coherent through the date that existing debt ends.