A national rental-demand story can still hide a soft rent roll.
CRE Daily's September 8 brief, drawing on Commercial Observer's higher-for-longer coverage and Freddie Mac's Primary Mortgage Market Survey, puts the average 30-year fixed mortgage at 6.66 percent for the week ending August 27, 2026. That compares with 6.56 percent a year earlier and 2.67 percent in December 2020. Chad Tredway, global head of real estate at J.P. Morgan Asset Management, told Commercial Observer that buying a home is about 50 percent more expensive than renting a house. Monthly mortgage payments on the median home have effectively doubled from pre-pandemic levels. It helps to remember what that print actually proves. Households priced out of ownership can support apartment occupancy. They do not automatically clear concessions, push in-place rents, or fix an oversupplied submarket.
Why the buy-rent gap keeps households renting
The mechanic is straightforward. Mortgage rates moved from below 3 percent in late 2020 to the mid-6s and briefly near 8 percent by late 2023, while home values rose roughly 60 percent since 2019, according to the Commercial Observer coverage. Tredway called housing affordability the weakest in a generation and expects rental demand to stay strong if rates stay higher for longer. Apartment leases are typically one year or less, so landlords can reprice faster than owners of longer-lease property types when inflation persists. That is a real structural advantage for multifamily.
It is also incomplete as a deal thesis. A household that cannot buy may still choose the property with two free months over the one quoting a higher face rent. Demand that arrives because ownership is expensive is not the same thing as pricing power at every garden community in every Sun Belt metro. Single-family construction slowing, which Tredway also flagged, can help apartments over time where the local pipeline is already thin. It does not rewrite last quarter's lease-up comps for an asset still competing with new deliveries.
Demand is national. Concessions are local.
The spread between markets is wide. Matt Ferrari of PXV Multifamily told Commercial Observer that parts of the East Coast and Midwest offer discount buying opportunities where rental supply remains limited. In parts of the Sun Belt, excess supply is still weighing on owners, and two months of free rent is common in certain oversupplied areas. Construction starts have slowed and helped supply level off, but the gap between constrained and overbuilt markets remains significant.
In other words, a broker can truthfully say "national rental demand is supported by high mortgage rates" and still hand you an offering memorandum, or OM, that needs heavy concessions to lease. Markets with less development are seeing stronger rent growth. Easier-to-build markets can still face falling effective rents when supply runs ahead of demand. Pasting the 50 percent buy-versus-rent gap into a Phoenix, Austin, or similar growth-metro rent case is inventing a market you do not own.
Refi volume is not the same as easier acquisitions
There is also a difference between how capital is being used and what that means for your bid. Melissa Farrell, head of U.S. debt originations at PGIM Real Estate, said multifamily lending has stayed active even with limited acquisition activity, and that many owners are seeking refinancings. Multifamily now represents about 65 percent of PGIM's transitional and high-yield strategies, up from about 55 percent a year earlier. Many borrowers prefer floating-rate bridge debt in hopes that rates eventually move lower.
That is useful color for the capital markets section of a memo. It is not proof that acquisition pricing got easier, that seller rent cases got more honest, or that your debt service coverage will clear if you accept the OM's growth path. Refinancing demand can rise precisely because higher rates and inflation are stressing existing capital stacks. Treat it as a refinance signal, not as permission to soften your underwriting.
What this means for your underwriting memo
When an OM leans on "renters cannot buy" as the growth case, ask for the local proof. What are asking rents versus effective rents after concessions in the competitive set? How many free months are showing up on recent leases? What is the list-to-lease time? How many units are under construction or recently delivered inside the competitive radius? Rebuild net operating income, or NOI, from the T-12, which is the trailing twelve months of the property's actual income and expenses. Compare the rent roll to nearby leasing, and check whether the seller's vacancy and rent path assumes concessions disappear while the local pipeline is still delivering.
National affordability color belongs in the memo as context. It does not belong as the growth tab. The OM is a marketing document. Trailing actuals still beat seller pro forma. A confident wrong concession assumption is still worse than a slower, cited model. AcquiOS helps without pretending to decide the market. It moves the OM, T-12, rent roll, and supporting exhibits into your team's existing Excel template with source citations, so analysts spend time testing buy-box screens and local lease comps instead of retyping pages. AcquiScore can mark Proceed, Caution, or Pass against your written buy box after the file is built. It does not tell you whether two free months in a Sun Belt submarket clears your exit cap rate (the rate a buyer will use to value the property when you eventually sell it).
What to do this week
Take one multifamily OM that cites high mortgage rates, weak homebuying affordability, or "renters are stuck" as support for rent growth. Add a one-page local screen: effective rent after concessions, free months in recent leases, units under construction in the competitive radius, and whether the broker's geography matches the asset. Then rebuild the rent and vacancy case from the T-12 and rent roll without borrowing the national buy-rent gap as proof of pricing power.
If the seller's growth case only works when you ignore local concessions or nearby deliveries, say so in the memo and size the bid accordingly.
Frequently Asked Questions
Do high mortgage rates automatically help apartment owners?
They can support rental demand by making ownership more expensive, which is why J.P. Morgan Asset Management and others flag the buy-rent gap. They do not automatically raise effective rents. Local supply, concessions, and lease comps still decide what an asset can collect.
What is a concession in multifamily underwriting?
A concession is a move-in discount, often free rent or other credits, that lowers the cash a tenant actually pays relative to the quoted face rent. Two months of free rent in an oversupplied submarket can erase a large share of a headline rent increase. Always compare asking rent with effective rent.
Why can national rental demand and soft Sun Belt rents show up at the same time?
Because apartment markets are local. High mortgage rates can keep more households renting nationally while specific Sun Belt submarkets still absorb heavy deliveries. East Coast and Midwest markets with thinner supply can behave differently from easier-to-build metros.
How does AcquiOS help with this kind of screen?
AcquiOS moves the broker OM, T-12, rent roll, and related exhibits into your team's existing Excel template with citations, so analysts can test concession and supply assumptions against the actual file instead of rebuilding the model by hand. It supports judgment. It does not replace it.