Key Takeaways
- Assuming a loan at 3.5% when market rates are 6.5% creates instant financial advantage — lower debt service, higher cash flow, and a built-in equity creation mechanism
- Most Fannie Mae and Freddie Mac multifamily loans are assumable, making agency debt from the low-rate era a transferable asset
- Distressed note purchases give investors leverage to acquire properties at deep discounts without competing in traditional bidding processes
- The 2021–2022 origination wave created a large pipeline of assumable low-rate loans attached to properties whose owners need to sell
Most real estate transactions focus on the property. But in certain market conditions, the most valuable asset in a deal isn't the building — it's the debt. When interest rates rise significantly after a period of cheap money, existing low-rate loans become financial advantages that transfer with the property.
Loan assumptions and distressed debt strategies are two sides of the same opportunistic coin: they exploit the gap between what debt cost when it was originated and what it would cost to replace today.
Loan Assumptions: Buying the Debt, Not Just the Building
A loan assumption lets the buyer step into the seller's existing mortgage. Same interest rate, same amortization schedule, same remaining term. The buyer pays the difference between the loan balance and the purchase price as equity.
In a normal rate environment, assumptions are a footnote. But when rates have moved 250–300 basis points higher since origination, the math becomes compelling:
- Immediate cash flow advantage. Debt service on a 3.5% assumed loan is dramatically lower than on a new 6.5% loan at the same balance. That spread goes directly to cash-on-cash returns
- Higher supportable leverage. Agency lenders underwrite to DSCR. A lower rate means the same NOI supports a larger loan, which means less equity required from the buyer
- Built-in refinance upside. If rates decline before the assumed loan matures, the buyer can refinance into a new loan at lower rates — a second bite at rate improvement
- Reduced closing costs. Assumption fees (typically 1%) are lower than origination fees on new debt, and the appraisal and underwriting process is often faster
When rates were at 3%, nobody talked about assumable debt. Now that rates are at 6.5%, the loan from 2021 is worth more to a buyer than the building it's attached to.
Where Assumable Loans Come From
Not all commercial real estate loans are assumable. The most common sources:
- Fannie Mae and Freddie Mac. Most agency multifamily loans originated between 2019 and 2022 are assumable, subject to buyer qualification and a 1% fee. These are the largest pool of assumable debt in the market
- CMBS loans. Commercial mortgage-backed securities typically allow assumption, though the process involves a special servicer and can take 60–90 days
- FHA/HUD loans. HUD 223(f) and 221(d)(4) loans carry very low rates and are assumable with HUD approval, though the process is bureaucratic and slow
Conventional bank loans are generally not assumable unless specifically negotiated at origination. This means the assumption opportunity is concentrated in the agency and securitized debt markets — precisely where multifamily operators focus their financing.
Distressed Debt: Buying the Note
Loan assumptions involve buying a performing property with favorable debt. Distressed debt strategies take a different approach: buying the loan itself — typically at a discount — from a lender who wants out.
This scenario arises when a borrower defaults or faces imminent default (failed rate cap, missed payments, covenant breaches) and the lender prefers a discounted note sale to the cost and timeline of foreclosure:
- Note purchases from banks. Community banks with concentrated CRE exposure may sell non-performing loans at 60–80 cents on the dollar to clear their books and satisfy regulators
- Special servicer dispositions. When CMBS borrowers default, the special servicer may sell the note to a qualified buyer rather than manage a prolonged workout
- Loan-to-own strategies. Buying the note at a discount and then negotiating a deed-in-lieu of foreclosure with the borrower can result in acquiring the property at a significant discount to its value
For operators, the advantage of distressed note purchases is access. You're not competing in a traditional bidding war — you're negotiating directly with a lender whose motivation is to exit, not to maximize price. The operator's ability to assess the physical property and quantify the turnaround plan makes them a more credible note buyer than a pure financial player.
The Current Opportunity
The 2019–2022 origination wave created an enormous pool of low-rate assumable debt — much of it attached to properties whose sponsors are now under pressure. Rate caps are expiring. Supplemental loans are maturing. Equity has been eroded by rising cap rates.
For operators who can evaluate the physical asset, quantify the deferred maintenance, and execute the repositioning, this cycle creates a rare alignment: motivated sellers, favorable assumable debt, and properties that need exactly what operators provide — hands-on execution.
The debt isn't the strategy. The building is still the investment. But in an environment where the cost of capital drives returns, acquiring existing favorable financing alongside a property you can improve is one of the most powerful combinations in commercial real estate.