Why Locking in a Low Rate Shouldn’t Lock Up Your Growth Options
Many commercial property owners worked hard to secure attractive interest rates on their existing mortgages. Today, understandably, they are reluctant to touch those loans.
However keeping a low-rate first mortgage doesn’t necessarily mean keeping your equity locked up with it.
Depending on the property, lender, and loan documents, there may be several ways to access additional capital while preserving an existing first mortgage. Sometimes, after running the numbers, replacing that low-rate loan altogether may make more sense than expected.
The key is to look beyond the rate on the existing loan and compare the total cost of the capital structure.
Consider this scenario:
You own an industrial property worth approximately $10 million.
You have a $5,000,000 first mortgage at 4.00%, with plenty of term left.
You’d like to access another $1.5 million to reinvest in your business, acquire another property, or pursue another opportunity.
Here are three potential approaches.
Option 1: Start With Your Existing Lender
Before looking elsewhere, talk to the lender already in first position.
Depending on the lender and the existing loan structure, they may be willing to provide a supplemental loan, increase the existing facility, establish a line of credit secured behind the first mortgage, or otherwise structure additional financing without requiring you to refinance the original $5 million balance.
For a strong borrower with a good payment history and relatively low leverage, this can sometimes be the cleanest solution.
Assume, purely for illustration, that the existing lender provides the additional $1.5 million at Prime + 1.00%. With Prime currently at 7.00%, that would equate to 8.00% today.
This blended-rate math would look like this:
Existing first mortgage: $5,000,000 × 4.00% = $200,000
New additional capital: $1,500,000 × 8.00% = $120,000
Total annual interest: $320,000
Total debt: $6,500,000
Blended interest rate: 4.92%
You are borrowing new money at 8.00%, but because much of your debt remains at 4.00%, your blended rate across the entire $6.5 million capital structure is still below 5.00%.
That is why the first call should often be to the lender you already have.
Option 2: Add a Second Loan Behind the Existing First
If your existing lender isn’t willing to provide additional proceeds, another possibility is a second mortgage or second trust deed behind the existing first.
This allows you to access equity while leaving the 4.00% first mortgage untouched.
Before pursuing this route, however, review the existing loan documents carefully. Some first mortgages prohibit subordinate financing, while others permit it only with the first lender’s consent. Depending on the lenders and structure, additional subordination or intercreditor documentation may also be required.
Second-position debt also generally carries a higher interest rate and may have a shorter term than conventional first-mortgage financing, making the exit strategy particularly important.
Assume the new $1.5 million second mortgage prices at 10.00%:
Existing first mortgage: $5,000,000 × 4.00% = $200,000
New second mortgage: $1,500,000 × 10.00% = $150,000
Total annual interest: $350,000
Total debt: $6,500,000
Blended interest rate: 5.38%
Despite paying 10.00% on the new money, the blended rate on the entire $6.5 million remains 5.38%.
That’s a much different way of looking at the transaction than simply saying, “I don’t want to borrow money at 10%.”
Option 3: Replace Everything with a New First Mortgage
The third option is to refinance the existing loan and place the entire $6.5 million into one new first mortgage. At first glance, this can feel counterintuitive. Why voluntarily give up a 4.00% mortgage?
The answer is that the 4.00% rate shouldn’t be evaluated by itself. It should be compared against the blended cost and structure of the alternatives.
For example, if a new $6.5 million first mortgage were available at an illustrative 6.00%:
$6,500,000 × 6.00% = $390,000 of annual interest
Compare that with the structure above:
$5,000,000 at 4.00% + $1,500,000 at 10.00% = $350,000
In this example, preserving the old first mortgage saves approximately $40,000 per year in interest, before considering fees, amortization, or other transaction costs.
So, keeping the 4.00% first clearly has value. Now change just one variable.
Suppose the second mortgage isn’t available at 10.00% and instead prices at 13.00%:
$5,000,000 × 4.00% = $200,000
$1,500,000 × 13.00% = $195,000
Total annual interest: $395,000
Blended interest rate: 6.08%
Now the economics are much closer to refinancing the entire $6.5 million at 6.00%.
And that’s the point.
Don’t Let the Headline Rate Make the Decision
Owners naturally focus on the rate they already have, especially when it’s substantially below today’s market.
But the right question isn’t simply: “Why would I ever give up my 4% loan?”
The better question is: “What does my entire capital structure cost under each alternative?”
That means comparing more than just interest rates.
A proper analysis should also consider prepayment penalties on the existing loan, origination and closing costs, amortization, loan term, recourse, covenants, required reserves, subordinate-debt restrictions and the expected holding period for the new capital.
A second mortgage that looks inexpensive based on blended rate may become less attractive if it carries a short maturity and forces another refinance 12 months later. Conversely, refinancing an entire low-rate first mortgage may make little sense if the existing loan has substantial remaining term and the incremental capital can be obtained efficiently elsewhere.
The takeaway
There is no single structure that works for every property owner.
Sometimes the best answer is preserving the existing first mortgage and obtaining additional capital from the same lender. Sometimes a second mortgage makes sense. And sometimes refinancing the entire capital stack produces a cleaner or more flexible long-term solution.
The important thing is not to let the existing rate make the decision for you before you’ve run the numbers.
A 4.00% mortgage is valuable. But what ultimately matters is the cost, flexibility and duration of the entire financing structure and how that structure fits your broader business plan.
Before deciding that your low-rate loan is untouchable, compare the alternatives. The answer may be more nuanced than the headline rate suggests.