When to Refinance an Apartment Building: A Decision Test

Short answer

Refinance an apartment building when four things line up: you are inside your planning window before maturity, your prepayment cost is low or zero, your NOI is at a level a lender will underwrite, and the new loan serves a goal such as cash out, a lower payment, or removing recourse. Rate forecasts should not drive the date.

The short answer

The right time to refinance is set by your documents and your operating numbers, not by a view on rates. Five inputs decide it: the maturity date, the prepayment window, how exposed you are to a rate move, where NOI is heading, and what you want the new loan to do. Work through them in that order. Each one either opens the window or closes it.

Input 1: your maturity date

Count back from maturity. A conventional agency or bank refinance on a stabilized building usually takes a few months from first lender call to funding, and HUD takes longer. Third-party reports, title and rate lock all need room. If your maturity is only a few months away, you are no longer choosing when to refinance; you are choosing between refinancing fast, extending, or selling.

The maturity planner builds dated milestones backward from your maturity and tells you whether you are on track, tight or late. Start there if you have not already.

Input 2: your prepayment window

Most fixed-rate loans get cheaper to leave over time, and many become free near the end. Two published examples:

Fannie Mae's standard yield maintenance schedule, in versions filed in public loan documents, charges the greater of 1% or yield maintenance until the yield maintenance period ends, 1% after that, and nothing from the last day of the fourth month before the maturity month.
Freddie Mac's Conventional Small charges no prepayment premium in the final 90 days.

Your note has its own dates. Write down three: when the lockout ends (if there is one), when the cost drops to a flat floor, and when the open window starts. If you are already inside the open window, prepayment drops out of the decision. If you are not, the question becomes whether savings on a new loan beat the exit cost before the window opens. The break-even calculator answers that one directly.

Input 3: your rate exposure, not a rate forecast

Nobody can tell you where Treasury yields or SOFR will be at your closing, so do not build a plan that needs them to go one way. Ask a different question: how much can rates move before the deal stops working?

If a modest rise breaks your refinance, because the loan would no longer cover your payoff, you have a timing risk. Lock the deal you can get, or line up an extension before you need it.
If the deal works across a wide range of rates, timing is less urgent, and you can wait for the open window or a better NOI.
If you are on a floating-rate loan, your exposure is live every month. The cost of replacing an expiring rate cap belongs in the decision.

Locking is how you turn a rate risk into a fixed number. Fannie Mae small loans offer 30- to 180-day commitments, and Freddie Mac's Index Lock lets eligible borrowers lock the Treasury index after a signed application. See refinance rates for how locks work and what breaking one costs.

Input 4: where NOI is heading

Lenders size on trailing performance. That makes the NOI trend a timing input in its own right:

NOI rising (leases rolling up, renovated units leasing, a tax appeal pending): waiting a few months can buy a larger loan, if your maturity and prepayment dates allow it.
NOI flat: timing is driven by the other inputs.
NOI falling (insurance or taxes resetting higher, concessions creeping in, a large tenant base on month-to-month): refinance before the decline shows up in the trailing twelve months, or expect a smaller loan later.

Before you decide, restate your NOI the way a lender will. The T-12 underwriting calculator applies typical vacancy, management and reserve adjustments and shows what they do to loan size.

Input 5: what the new loan has to do

A refinance needs a job. Name it, because each job sets a different threshold:

Goal	What has to be true	Where to check
Pay off a maturing loan	New loan covers payoff plus costs	DSCR sensitivity
Take cash out	Value and NOI have grown enough since you borrowed	Cash-out calculator
Lower the payment	Savings beat the exit cost and closing costs	Break-even calculator
Remove a personal guarantee	Property qualifies for non-recourse debt	Bank loan to agency
Exit a bridge loan	Stabilized NOI supports a permanent loan	Bridge takeout test

If you cannot name the job, you may not need a refinance yet.

Run the comparison: extend, refinance or sell

Once the inputs are clear, compare the three paths over the same five years. Enter your value, NOI and growth, your current balance and rate, what an extension would cost, a refinance rate to test, sale costs and an exit cap rate.

Extend, refinance or sell

Value today ($)NOI this year ($)NOI growth per year (%)Current loan balance ($)

Extend

Extension rate (%)Extension fee (% of balance)

Refinance

Refinance rate (%)Refinance min DSCR (x)Refinance max LTV (%)Refinance closing costs (%)

Sale and horizon

Sale costs (% of price)Exit cap rate (%)Years to compare

Sell now–

Extend–

Refinance–

Highest total–

Estimates only, not a loan quote.

The comparison is pre-tax and uses your assumptions, so run it more than once: at the refinance rate you were quoted, and at a rate a half point higher. If the ranking changes between the two, the decision is rate-sensitive and you should lock sooner. You can share the result or send the numbers for quotes from the tool.

Decision rules that hold up

Inside the open window and the deal sizes: refinance now. Waiting only adds rate risk.
Before the window, savings beat the penalty in the break-even test: refinance now and pay the cost.
Before the window, savings do not beat it: set dates to start the process so you close right after the window opens.
The deal does not size: see when it won't size, and ask about an extension early.
Selling wins the five-year comparison by a wide margin: talk to a broker about the sale before you spend money on refinance reports.

Tax consequences of a cash-out or a sale depend on your situation. Confirm them with your tax advisor before acting.

Frequently asked questions

How far before maturity should I start refinancing my apartment building?

Start well before you think you need to. A stabilized agency or bank refinance usually runs a few months from the first lender conversation to funding, and HUD takes longer. Reports, title work and rate lock all need time. Working back from your maturity date with a planner gives you dated milestones and shows whether your schedule is on track, tight or late.

Should I wait for rates to drop before refinancing?

Not as a plan. No one can predict Treasury yields or SOFR at your closing date. Instead, test how far rates can move before your refinance stops covering the payoff. If a small rise would break the deal, lock what you can get. If the deal works across a wide range, you have room to wait for your prepayment window or a stronger NOI.

Is it worth refinancing before my prepayment penalty ends?

Sometimes. Compare the monthly savings from the new loan against the prepayment cost and closing costs, over the months left until your open window. If the savings recover those costs before the window opens, refinancing now wins. If not, plan to close just after the window opens. A break-even calculator runs this comparison from your balance, rates and penalty quote.

Does rising NOI mean I should wait to refinance?

It can. Lenders size loans on trailing performance, so if rents or occupancy are improving, a few more months of results can support a larger loan. That only works if your maturity date and prepayment terms give you the time, and if rates do not move against you in the meantime. Restate your NOI the way a lender will before counting on the increase.

When does selling beat refinancing?

Selling tends to win when the new loan would be much smaller than your payoff, when large capital work is coming, or when the equity would earn more elsewhere. Compare extending, refinancing and selling over the same five years on a pre-tax basis, then confirm the tax consequences of a sale with your advisor before you decide.