A mini-perm loan is a short-term commercial real estate loan, usually running three to five years, that pays off the construction lender once a building is finished and carries the property through lease-up until it can qualify for long-term permanent financing. It solves a timing problem: construction lenders want out as soon as the Certificate of Occupancy is issued, but permanent lenders won’t underwrite a building that hasn’t proven it can hold tenants and produce steady income. The mini-perm buys the developer years, not months, to fill the building, stabilize cash flow, and refinance into cheaper long-term debt at higher proceeds.
Where It Sits in the Financing Lifecycle
Commercial development follows a predictable financing sequence. A construction loan funds the build. A permanent loan, typically a 10-to-25-year fixed-rate mortgage, funds the stabilized asset for the long haul. Between those two stages sits a messy period when the building is physically complete but financially unproven, and neither of those loans fits.
Construction loans mature shortly after the Certificate of Occupancy. At that point, the property might be sitting at 30% or 40% occupancy with a thin rent roll. Locking in a permanent mortgage against that anemic income would mean borrowing a fraction of what the finished, leased-up building could support, leaving money on the table for the entire life of the loan.
The mini-perm bridges that gap. It retires the construction debt, gives the developer a runway measured in years, and comes due only after the property has had time to reach institutional occupancy levels and build a track record of stable net operating income. The permanent refinance then happens on the property’s real numbers, not its opening-day numbers.
Typical Loan Terms
Mini-perm loans share a consistent structure. Each feature reflects the loan’s transitional purpose and affects how much cushion the developer has during lease-up.
Term Length
Three to five years is standard. Some structures stretch to seven, depending on property type and how long the lease-up is expected to take. The term is calibrated to give the property enough time to stabilize while keeping pressure on the developer to refinance rather than sit on expensive short-term debt.
Interest Rate
The rate is almost always floating, pegged to a benchmark index such as the Secured Overnight Financing Rate (SOFR) plus a lender spread. The all-in rate sits between the higher cost of the construction loan it replaces and the lower cost of the permanent loan the developer is working toward.
Interest-Only Payments and the Balloon
Mini-perms are frequently structured interest-only for the full term. No principal is paid down, which preserves cash flow for operating expenses, tenant improvements, and leasing commissions during the stabilization window. The tradeoff is a balloon payment at maturity for the entire original principal balance. That balloon is the single most consequential feature of the loan: the developer’s whole plan turns on being able to refinance or sell before it comes due.
Loan-to-Value
Underwriting is conservative. Loan-to-value ratios typically run from 60% to 75% of the property’s appraised stabilized value, and the LTV is based on a fresh appraisal ordered at mini-perm closing, not the construction-phase appraisal. That equity cushion is what protects the lender if the market softens or lease-up takes longer than planned.
Interest Rate Caps
Because the rate floats, a rate spike during lease-up can blow through cash flow projections and jeopardize the property’s ability to cover debt service. This risk is not theoretical. Rate environments can move sharply over three to five years.
Most floating-rate lenders require the borrower to purchase an interest rate cap as a closing condition. A cap is a contract with a third-party financial institution that pays the borrower when the index rate exceeds a specified ceiling, called the strike rate. The lender usually dictates the strike by solving for the minimum debt service coverage ratio it needs based on underwritten income. If rates climb past the strike, the cap provider covers the difference, keeping effective interest expense from spiraling.
The cap must generally stay in place for the full initial loan term. Lenders also require the cap provider to carry a minimum credit rating from a major rating agency, and loan documents often include downgrade triggers that force the borrower to replace the cap if the provider’s rating slips. The cap itself is an upfront cost at closing, and its price varies with the strike rate, the term, and current rate volatility.
What Lenders Want to See
Getting approved requires proving the property has moved meaningfully past being a finished building. Lenders look at the asset, the income, and the borrower.
Sustained Occupancy
The threshold question is stabilization, generally defined as at least 85% occupancy sustained for a meaningful period, often a full calendar quarter. A snapshot number won’t do. A building that hit 85% last week and lost two tenants this week doesn’t qualify. The sustained requirement is what shows genuine market demand rather than a temporary blip.
Debt Service Coverage Ratio
Occupancy alone isn’t enough. Income from the occupied space must produce a debt service coverage ratio of at least 1.25, meaning net operating income exceeds the annual debt payment by 25% or more. The lender calculates DSCR from in-place lease income, not projections. Below the floor, the loan doesn’t close.
Sponsor Strength
The borrower’s track record matters as much as the numbers. Lenders want a sponsor who has stabilized comparable properties before and has the personal liquidity to cover shortfalls if lease-up runs long. Personal financial statements, a resume of similar projects, and evidence of liquid reserves all become part of the file.
Reserve Accounts
Expect funded reserves at closing for real estate taxes, insurance premiums, capital replacements, and tenant improvement and leasing commission (TI/LC) costs. The TI/LC reserve matters especially here because the property is still actively leasing, and the lender wants assurance the borrower can fund buildout costs for new tenants without starving debt service. Reserves are held in lender-controlled accounts and released against documented expenditures.
Reporting Obligations After Closing
Closing isn’t the finish line. Borrowers take on ongoing obligations that, if neglected, can trigger a technical default even when the property is performing well.
Standard reporting covenants require quarterly operating statements, updated rent rolls, copies of new leases, current insurance certificates, tax payment receipts, and an annual budget. Larger loans may require audited annual financials. Deadlines are spelled out in the loan agreement, and missing them is a default event regardless of how strong cash flow looks.
A technical default gives the lender legal grounds to accelerate repayment, making the full loan balance immediately due. In practice, lenders rarely jump straight to acceleration for a reporting lapse. The more common response is a waiver letter that acknowledges the default, sets a cure deadline, and tightens oversight. Repeated violations, or more serious breaches like letting insurance lapse or missing property taxes, can lead to a formal demand for accelerated repayment, typically with a 60-to-120-day window to find alternative financing.
The Exit Strategy
The exit is the most important part of a mini-perm loan. The whole structure is built around repaying the balloon at maturity by refinancing into permanent debt or selling the property. Lenders will not approve the loan without a credible plan for one of those outcomes.
Refinancing Into Permanent Debt
The standard exit is a refinance into a long-term permanent mortgage, typically 10 to 25 years, fixed-rate, and fully amortizing. Underwriting at that point focuses on stabilized income, and because NOI is higher than at mini-perm origination, the permanent loan usually provides larger proceeds at a lower rate. Done right, the refinance clears the balloon, returns equity to the developer, and locks in a capital structure for the long haul.
During mini-perm underwriting, the lender stress-tests the exit under conservative assumptions. If the numbers only work in a best-case scenario, the loan probably won’t get approved.
Extension Options
Most mini-perm agreements include one or two extension options that add a year each to the term. Extensions are not automatic. Exercising one typically requires the property to be meeting its DSCR covenant, payment of an extension fee, and in some cases the purchase of a new interest rate cap covering the extended period. They function as a pressure valve for borrowers who are on track but need more time because of a market slowdown or a delayed anchor tenant.
Recourse and Personal Guarantees
Many mini-perm loans carry full or partial recourse, meaning the borrower personally guarantees repayment. Even when the loan is structured as non-recourse, it will include carve-out provisions that restore personal liability for certain prohibited acts. These “bad boy” carve-outs are triggered by events like misapplying property funds, allowing the collateral to deteriorate, committing fraud, filing a voluntary bankruptcy petition, or taking on unauthorized additional financing. The personal exposure creates a strong incentive to stabilize the property and hit the exit on schedule.
Mini-Perm Loan vs. Bridge Loan
Developers and brokers sometimes use these terms interchangeably. They aren’t the same product.
A mini-perm is specifically designed for newly built commercial property that needs time to develop an operating history. It typically carries bank-level pricing because the collateral is a brand-new building with no deferred maintenance and the borrower is usually a proven developer. It replaces a construction facility and sits in the capital stack until permanent financing takes over.
A bridge loan is broader. It covers any short-term financing need where the borrower is working toward a specific event: leasing up an existing building, completing renovations, or preparing for a sale. Bridge loans come from a wider range of lenders, including debt funds and private lenders, and pricing reflects that. Bridge rates tend to run two to three percentage points higher than bank rates on a mini-perm for comparable collateral.
The practical difference comes down to the property’s story. New construction that needs its first tenants is mini-perm territory. An existing building being repositioned, acquired out of distress, or renovated is a bridge loan. Choosing the wrong product means paying more than necessary or struggling to find a willing lender.
If the Exit Doesn’t Come Together
This is the scenario every developer plans against. If the property hasn’t stabilized by maturity and no extensions remain, the borrower faces a maturity default. Every monthly payment can have been made on time and the balloon still triggers a default when it isn’t repaid.
Immediate consequences include late fees, penalty interest, and foreclosure proceedings. On a recourse loan, the lender can also pursue the borrower personally for any deficiency between the foreclosure sale price and the outstanding balance. Longer-term damage includes impaired creditworthiness that makes future borrowing harder and more expensive.
Workout options exist. Common ones include a loan modification that extends the maturity, a discounted payoff where the lender accepts less than the full balance, or an agreed sale process on a lender-set timeline. None are comfortable outcomes.
The best protection is starting the permanent loan process early. Experienced developers begin talking to permanent lenders 12 to 18 months before the mini-perm matures, leaving enough runway to address underwriting issues and close the refinance with time to spare. Waiting until the final months creates the kind of pressure that produces unfavorable terms, or no deal at all.