Quick Answer
Miami-Dade’s best office buildings are still filling up even though long-term borrowing costs are at their highest level in nearly two decades. Class A space produced most of the county’s positive net absorption in 2026. Trophy rents in Brickell have reached a record $250 per square foot. Lenders, meanwhile, are writing smaller loans against office buildings than they did before 2020. The result is a two-tier market: well-capitalized owners of top buildings can refinance and keep raising rents, while owners of older Class A and Class B towers face tighter loan sizing and more expensive equity.
Key Takeaways
- Through Q3 2026, Class A buildings accounted for about three-quarters of Miami’s year-to-date positive net absorption.
- The 10-year Treasury yield traded above 5.2% in October, which pushes the cost of office debt well above the level of a typical Miami cap rate.
- Lenders now size office loans by debt yield and stressed debt service coverage, not by appraised value alone, so the maximum loan is smaller.
- Brickell sets the price, Downtown supplies the large blocks of space, and Coral Gables absorbs tenants priced out of the core.
- In 2026 the line between trophy and commodity office space is drawn as much by the capital markets as by tenants.
Q3 2026 Miami Office Market at a Glance
| Metric | Latest Reading | Source |
|---|---|---|
| Class A vacancy (metro) | 16.0%, down 180 bps YoY | Cushman & Wakefield Q3 |
| Class B vacancy (metro) | 11.0%, up 10 bps YoY | Cushman & Wakefield Q3 |
| Q3 net absorption | ~151,000 SF | Cushman & Wakefield Q3 |
| YTD net absorption | ~605,000 SF | Cushman & Wakefield Q3 |
| YTD Class A absorption | ~457,000 SF | Cushman & Wakefield Q3 |
| Asking rent change | +10.0% YoY | CBRE Q3 |
| Q3 leasing volume | 1.1 million SF | Savills Q3 |
| Record trophy lease | $250/SF (830 Brickell) | Marcus & Millichap |
Vacancy figures vary by broker because each firm defines its inventory and building classes differently. Use the trend, not a single number.
The Paradox: Rising Occupancy, Rising Debt Costs
On paper, Miami’s office market should be slowing. The Federal Reserve raised rates again in September, and long-term bond yields have kept climbing. In early October the 10-year Treasury sat near 5.27%, a day after reaching its highest level since 2002, and Fed Governor Christopher Waller indicated that further hikes would likely be needed. On October 13, New York Fed President John Williams said a single additional hike in 2026 might be enough, and the 10-year eased to about 5.22%. The Fed’s next rate decision is October 28.
In most U.S. office markets, those conditions would freeze leasing and transactions. Miami has kept growing anyway. Cushman & Wakefield counted more than 151,000 square feet of positive net absorption in the third quarter, bringing year-to-date occupancy gains to about 605,000 square feet. Class A led with roughly 457,000 square feet of that total, compared with about 147,000 for Class B.
CBRE’s numbers point the same way. In Q3, Miami office vacancy dropped 20 basis points from the prior quarter and 90 basis points from a year earlier. Average asking rents rose 2.2% for the quarter and 10.0% over the year. Over a longer horizon, CBRE found that vacancy has fallen 540 basis points over five years while average asking rents have climbed 55.5%.
Higher rates and positive absorption can coexist because the two forces act on different people. Interest rates bear on owners and buyers of buildings. Absorption reflects tenant demand. Miami’s tenant base is heavy with hedge funds, family offices, private equity firms, and large law firms, and for those firms the decision to expand is driven by talent and taxes, not by their landlord’s cost of debt.
Brickell: Where Scarcity Sets the Price
Brickell is the submarket that sets prices for the rest of the county. This summer Peter Thiel’s family office took a full floor of about 18,158 square feet on the 44th floor of 830 Brickell, reportedly at around $250 per square foot, a new record for the neighborhood. Marcus & Millichap described that rate as a Miami record and noted that Google also took trophy space.
The Google deal shows that much of the demand comes from companies already in Miami. Savills reported that Google grew its footprint at 1450 Brickell from roughly 10,000 square feet to 45,000, while Brevan Howard opened its first Miami office in Coconut Grove.
The gap between the best buildings and the submarket average is very wide. Colliers’ Q2 2026 data put Brickell’s Class A direct vacancy at 11.8% and average asking rent at $93.03 per square foot. A $250 trophy lease is roughly 2.7 times that average. That is the “premium leasing spread” in concrete terms: the newest buildings capture nearly all of the pricing power while the rest of the stock competes on concessions.
Measures of Brickell’s tightness vary by source. Yardi Matrix data analyzed by MIAMI REALTORS® showed Brickell vacancy at 7.3% in July 2026, with Class A+/A space making up 96% of its 9.6 million square feet of inventory. Marcus & Millichap measured Brickell vacancy at 13.3%, up 80 basis points, and attributed the rise to tenants leaving older buildings. The two readings are consistent with each other: Brickell’s vacant space is concentrated in buildings that tenants are moving out of, not the buildings they are moving into.
New supply is a decade away, not a year away
Construction will not quickly ease the trophy shortage. Santander started work in April 2026 on a 50-story tower at 1401 Brickell Avenue, and Citadel’s $2.5 billion headquarters project could begin vertical construction by the fourth quarter. Together the two could add more than 1.5 million leasable square feet by the early 2030s. Santander has indicated that triple-net asking rents in its tower will start below $200 per square foot. Until those buildings deliver, tenants who need large contiguous blocks of top-quality Brickell space have very few choices.
Downtown Miami: The Large-Block Alternative
Downtown is benefiting from Brickell’s shortage. Marcus & Millichap reported that Downtown vacancy fell 120 basis points through the first half of 2026 to 17.1%, as accounting, legal, and corporate tenants seeking larger contiguous spaces found more options there.
Rents in Downtown are close to Brickell’s. Yardi data put the Miami CBD’s July asking rent at $78.4 per square foot, against $79.7 in Brickell, with 13.2% vacancy. For a 60,000-square-foot tenant, Downtown’s main advantage is that the space exists. A firm can consolidate onto three or four floors there instead of splitting across two Brickell buildings.
Downtown’s higher vacancy also makes it the submarket where lenders look most closely at individual assets. A well-leased, renovated Downtown tower can be financed. A half-empty one built in the 1980s, with large tenant-improvement obligations ahead, has a much harder time.
Coral Gables: Spillover With Staying Power
Coral Gables is the release valve for the core. In July, the Coral Gables-Downtown submarket had 8.0% vacancy and an average asking rent of $67.2 per square foot, with Class A making up 75% of its 5.9 million square feet. Savills attributed 16.2% of Q3 Miami leasing to Coral Gables, behind Airport West at 28.0% and Brickell at 25.2%, and ahead of Downtown at 12.0%.
Capital has followed. The Alhambra office complex in Coral Gables sold for $119 million in January 2026, a deal widely read as evidence that institutional buyers still regard the submarket as a stable long-term hold. The Gables offers what many buyers want right now: a tenant mix weighted toward professional services and medical users, a lower rent base than Brickell and therefore more room for rents to grow, and buildings that need less capital per square foot to stay competitive.
Submarket Comparison
| Submarket | Role in 2026 | Vacancy | Asking Rent |
|---|---|---|---|
| Brickell | Price setter, trophy core | 7.3%–13.3% | $79–$93/SF avg |
| Downtown (CBD) | Large contiguous blocks | 13.2%–17.1% | ~$78/SF |
| Coral Gables | Spillover, pro services | ~8.0% | ~$67/SF |
Ranges reflect different broker methodologies (Yardi Matrix, Colliers, Marcus & Millichap).
How Lenders Size Office Loans in 2026
The phrase “tighter underwriting” covers a specific set of rules, and they matter more than the interest rate itself.
Before 2022, office loans were sized mostly by loan-to-value. A building appraised at $100 million could support a loan of $60 million to $65 million. Today three tests run side by side, and the lender funds the smallest result. That means separate maximum loans under LTV, debt service coverage, and debt yield, with the loan set at the lowest of the three.
Each test has tightened for office. One 2026 industry survey found that office deals that close at all generally need debt service coverage of 1.40x or better, and that lenders test coverage at 100 to 200 basis points above the actual note rate. Lender guidance across asset classes puts minimum debt yields at roughly 8% to 12%.
Leverage has started to recover. The median loan-to-value on conduit CMBS office loans reached 59.1% through July 2026, up from 52.7% in 2023 but still short of the 64.1% median in 2019. Conduit office CMBS originations totaled $2.88 billion through July.
Regional and community banks matter most for this report because they hold most of the debt on mid-size Miami office buildings. MSCI data show that regional and local banks hold the largest share of commercial property loans maturing in 2026, with CMBS lenders just behind. When those loans mature, owners are underwritten under the new rules, not the ones in place when they bought.
Illustrative FAN Loan-Sizing Example
A hypothetical Miami Class A building with $10 million of net operating income, valued at a 6.5% cap rate. FAN calculation, for illustration only.
| Sizing Test | Assumption | Maximum Loan |
|---|---|---|
| Loan-to-value | 60% of $153.8M value | $92.3M |
| Debt yield | 10% minimum | $100.0M |
| DSCR (stressed) | 1.40x at 8.75%, 25-yr amort. | $72.4M |
| Loan funded | Lowest of three | $72.4M (47% LTV) |
The coverage test is the one that binds. Even with a healthy 60% LTV permitted on paper, the stressed debt-service test limits the loan to about 47% of value. An owner refinancing a $90 million loan on this building would have to bring roughly $18 million of new equity. That gap is the “tighter underwriting” problem in practice. It applies to good buildings, not just distressed ones.
The Two-Tier Capital Market
Trophy assets are financed on different terms. The clearest example is 830 Brickell. Cain and OKO Group closed a $630 million CMBS refinancing of the tower, a five-year loan originated by Goldman Sachs and JPMorgan. Fitch Ratings valued the 650,148-square-foot building at $519 million, using an 8% capitalization rate.
That loan is larger than the rating agency’s own value conclusion. Fitch’s conservative 8% cap rate is not what a buyer would pay for the building. But the deal shows that for an asset with Citadel, Microsoft, Kirkland & Ellis, and Santander on its rent roll, the largest Wall Street lenders will finance on the strength of tenant credit and future rent growth rather than on current appraisal standards.
This is how institutional capital has stayed resilient in Miami. Big money has not left; it has narrowed its focus. Life companies, CMBS desks, and debt funds compete for trophy and near-trophy loans. Older Class A towers, and most Class B space, get regional banks with conservative coverage tests, or debt funds charging double-digit rates.
The pattern was visible before 2026. In 2025, Goldman Sachs and Wells Fargo provided a $229 million refinancing of 801 Brickell, enlarging an existing loan by $80.4 million, and Commercial Observer noted that South Florida office buildings with strong tenancy and established owners were still able to refinance.
What separates the two tiers
| Factor | Trophy / Top Class A | Older Class A / Class B |
|---|---|---|
| Typical lender | CMBS, life cos., money-center banks | Regional banks, debt funds |
| Loan sizing driver | Tenant credit, rent growth | Stressed DSCR, debt yield |
| Rent trend | Record highs | Flat, concession-driven |
| Refi outcome | Proceeds often maintained | Equity paydown common |
Risks to the Miami Office Story
Leasing volume has cooled. The Real Deal, citing CoStar data in September, reported that South Florida leasing in 2026 is running about 20% below 2022 and 2023 levels; brokers argue that limited available inventory explains part of the drop. Absorption is still positive, but fewer new deals means less of a cushion if a large tenant leaves.
Rates could rise further. If the Fed hikes on October 28 and long yields keep climbing, both the stress rates lenders use and the cap rates buyers require will go up. Every 50-basis-point increase in a stressed rate cuts the maximum loan on a coverage-constrained building by a meaningful amount.
New supply after 2030. The Citadel and Santander towers will ease the trophy shortage. When they open, tenants could leave today’s best buildings, and older Class A space could lose tenants again.
Class B drift. Cushman & Wakefield’s Class B vacancy edged up 10 basis points year over year while Class A improved. If that divergence widens, refinancing pressure on older buildings will increase.
Brian’s Take: The Market Is Pricing Tenants, Not Buildings
I spent years as a money manager reading credit and cash flow, and the Miami office market in 2026 looks to me much more like a credit market than a real estate market. The 830 Brickell refinancing tells you everything: a loan larger than the rating agency’s own value, made by two of the most disciplined lenders on Wall Street. They are not lending against concrete and glass. They are lending against Citadel’s and Microsoft’s lease obligations, in a submarket where replacement space won’t exist until the 2030s.
That is the real gap in Miami. The interesting spread is not trophy rent versus average rent. It is the spread between the cost of capital for a building with investment-grade tenants and a building without them. At a 5.2% 10-year yield, that gap determines who gets to keep their asset.
For owners of older Class A towers in Downtown or Brickell, the plan is simple: improve the tenant roster before the loan matures. A renovated lobby helps you lease space. A rent roll heavy with credit tenants helps you refinance. For investors, Coral Gables is the most sensible risk-adjusted position in the county right now. For tenants, the trophy premium is real but not permanent, and renewal negotiations should be timed with the 2030 delivery wave in mind.
— Brian
Frequently Asked Questions
Why is Miami office absorption positive when interest rates are so high?
Tenant demand and financing costs affect different parties. Miami’s tenants are largely finance, legal, and professional services firms expanding for talent and tax reasons. Higher rates mostly hit landlords and buyers, not the decision to lease.
What is the record office rent in Miami?
About $250 per square foot, for an 18,158-square-foot full-floor lease taken by Peter Thiel’s family office at 830 Brickell in mid-2026.
Which Miami submarket has the lowest office vacancy?
By Yardi Matrix data, Brickell, at 7.3% in July 2026, with Coral Gables close behind at about 8.0%. Other brokers measure Brickell higher, depending on which buildings are included.
How much can a Miami office owner borrow in 2026?
It depends on which of three tests binds: loan-to-value, stressed debt service coverage, and debt yield. For many office buildings the coverage test controls, which often limits loans to roughly 45% to 55% of value unless the building has strong tenant credit.
Are regional banks still lending on Miami office buildings?
Yes, but selectively. Regional and local banks hold the largest share of commercial loans maturing in 2026 and are refinancing them under stricter coverage and debt-yield standards, which often requires owners to pay down part of their loan.
When will new trophy office space open in Brickell?
The Santander tower at 1401 Brickell and Citadel’s headquarters project together could add more than 1.5 million leasable square feet, with delivery expected in the early 2030s.
Is Coral Gables a good alternative to Brickell for office tenants?
For many professional services and medical users, yes. It combines low vacancy, a high share of Class A space, and asking rents about 15% to 30% below Brickell averages.
Florida Authority Network publishes independent, long-form business coverage across 35 Florida news sites. For information on FAN market coverage and business profiles, call 813-409-4683.
Sources and Further Reading
- Cushman & Wakefield — Miami Office MarketBeat, Q3 2026
- CBRE — Miami Office Figures Report, Q3 2026
- Savills — Miami Q3 2026 Office Market Report
- Marcus & Millichap — Miami-Dade Office Market Report, 4Q 2026
- CRE Daily — “Miami Office Towers Target a Major Supply Shortage” (citing Colliers Q2 2026 data)
- MIAMI REALTORS® + RWorld — South Florida office rent analysis of Yardi Matrix data, July 2026
- Hoodline — “Thiel Cashes In On Brickell With Miami’s Priciest Tower Lease,” June 2026
- OKO Group Newsroom — “Cain, OKO Group Land $630M CMBS Deal for 830 Brickell”
- Commercial Observer — “Goldman Sachs and Wells Fargo Provide $229M Refi for 801 Brickell Office Building,” September 2025
- CRE Daily — “Office Loan LTVs Rebound but Stay Below Pre-Pandemic Highs,” 2026
- CommercialIQ — “DSCR in 2026: What CRE Lenders Actually Want to See,” May 2026
- RETS.ai — “How Lenders Size a Commercial Loan: DSCR, LTV, and Debt Yield Together”
- MSCI Real Capital Analytics — US Capital Trends: The Big Picture
- Briefs.co — 10-year Treasury yield coverage, October 8, 2026
- Bloomingbit — “US Treasury Yields Fall After New York Fed’s Williams Says One More 2026 Rate Hike May Suffice,” October 2026
- TenantBase — Coral Gables office market overview (citing Avison Young and JLL Capital Markets)
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