Single-Family Rentals Are Beating Multifamily by a Record 26.7% Margin — Here's the City-by-City Data and What to Buy

The Rental Market Just Split in Two — and Most Investors Are on the Wrong Side

Multifamily vacancy hit 7.3% nationally in Q4 2025 — the highest in decades. Meanwhile, single-family rental rents grew 2.4% year-over-year in March 2026, more than twice the pace of apartments. The gap between what SFR landlords collect versus what multifamily operators collect is now a record 26.7%, and it's still widening.

This isn't noise. It's a structural divergence that's been building since 2020 and is now impossible to ignore: since January 2020, multifamily rents are up 32% nationally while single-family rents are up 51% — a 19-point spread that's reshaping where smart capital is flowing.

If you're evaluating income properties in 2026 and treating a 6-unit apartment building the same way you'd treat a single-family rental, you're using the wrong map.

The Supply Story Behind the Divergence

The explanation is simple once you look at the data: multifamily got built at a historic pace. Single-family didn't.

In 2024, multifamily completions hit 608,000 units — a 38-year high, according to NAHB. That wave of supply hit markets like Phoenix, Austin, and Denver all at once, and the math is brutal: Phoenix multifamily rents are down -2.6% year-over-year as of March 2026. Denver multifamily is down -2.4%. Austin multifamily is down -3.7%. These aren't temporary dips — they're markets absorbing multiple years of pipeline supply faster than demand can keep up.

Single-family rentals have the opposite problem. The US has roughly 15 million SFR units, and 82% are owned by individual landlords with 1-10 properties — people who aren't building new supply. Nobody's constructing single-family rentals at institutional scale. The constrained supply is structural, and it's why SFR rent growth is outpacing multifamily in nearly every major metro.

The supply cycle is starting to correct: NAHB projects multifamily starts will fall 5% in 2026 to ~392,000 units, then another 6% in 2027. But the hangover doesn't clear overnight. The oversupply markets will be absorbing excess inventory well into 2027–2028.

The Numbers: What the Data Actually Shows

Here's what Zillow's Observed Rent Index (ZORI) shows as of March 2026 — the actual rent gap between multifamily apartments and single-family homes in the same metros:

Source: Zillow Observed Rent Index, March 2026 (via Wolf Street, May 2026)

Note what's happening in Denver and Phoenix: not only are SFRs renting at $1,500+ premiums over apartments, but multifamily absolute rents are declining. The spread isn't just wide — it's still growing.

Even the best-in-class institutional operators are feeling it. Invitation Homes' own data shows renewal lease rents at +3.7% YoY but new-lease rents at -3.0% YoY. Every time a tenant leaves, Invitation Homes is re-leasing at lower rates. The only thing propping up their NOI is tenant retention — not market fundamentals. That's not a thesis for new entrants.

And on valuation: multifamily property values fell 4% in 2025 and now sit 28% below their 2022 peaks, per NAHB. Anyone who bought value-add multifamily in 2021–2022 at sub-5% cap rates is staring at 28% paper losses while trying to refinance in a market where cap rates have expanded to 6–7%.

For the Midwest SFR bulls, the counter-data is compelling: Cleveland delivers rent yields of 11.3%, Indianapolis sits at 9.1%, and Kansas City combines 8–9% yields with 3–5% annual appreciation. Entry prices in these markets range from $150K–$300K, a fraction of the coastal multifamily deals trading at $900K+ for 6-unit buildings with 7% vacancy.

Common Mistakes Investors Make Here

• Treating "multifamily" as inherently safer because of multiple doors. Market-wide vacancy is market-wide vacancy. Eight units at 20% occupancy per unit is still 8% net vacancy — same exposure as a single-family sitting empty for 5 weeks.

• Using 2022 comps to underwrite 2026 acquisitions. Phoenix and Denver were 2% cap rate markets in 2022. Buying those same assets today — with rents declining and vacancy at historic highs — at compressed cap rates is one of the worst risk-adjusted trades available right now.

• Assuming new-lease rents represent future cash flow. Invitation Homes' data is a warning: new leases are pricing below in-place rents in many markets. If your pro forma models current asking rents across all units, you're overstating Year 2 cash flow on every unit you turn over.

• Dismissing SFR because "you can't scale it fast." The 82% individual-owner structure of SFR means you're buying from motivated individual sellers — not institutions. Off-market deals are more available, competition is thinner at sub-$300K price points, and the Midwest markets still deliver 9–11% cash-on-cash yields at entry prices institutional capital won't touch.

How to Use PropGPT for This

Prompt 1 — Side-by-side SFR vs. multifamily comparison in your target market:

"Compare single-family rental yield vs. multifamily cap rates in [city] for a $350,000 acquisition budget. Use current 2026 vacancy rates and rent growth projections. Show projected cash-on-cash return at Year 1 and Year 3 for each scenario."

Gives you an apples-to-apples decision matrix instead of guessing which asset class wins in your market.

Prompt 2 — Stress-test a multifamily deal against current conditions:

"I'm evaluating an 8-unit apartment building in Phoenix at $975,000. Given current multifamily vacancy of 7.3% and -2.6% YoY rent growth, stress-test this deal assuming 10% vacancy and flat rents for 3 years. What's the Year 1 DSCR and cash-on-cash return at a 6.8% interest rate?"

Forces your underwriting to reflect 2026 reality — not 2022 assumptions that no longer hold.

Prompt 3 — Screen SFR markets where the numbers still work:

"Find the top 10 US metros for single-family rental investing in 2026. Prioritize markets where SFR rent growth exceeds 2% YoY, vacancy is below 6%, and median SFR home prices are under $280,000. Rank by estimated cash-on-cash return."

Narrows your opportunity set with live data so you know exactly where to look next.

Prompt 4 — Model a 1031 exchange from multifamily to SFR:

"I own a 6-unit apartment building in Dallas currently valued at $920,000. Multifamily rents in DFW are down 0.9% YoY. If I 1031 exchange into 3 single-family rentals at $300K each in Indianapolis, give me a 5-year NOI comparison using current vacancy rates and rent growth projections for each asset type."

Quantifies what staying in a declining asset class costs you versus repositioning — in dollars.

Prompt 5 — Find specific SFR deals in top Midwest cash flow markets:

"In Cleveland and Indianapolis, show me the expected gross rent multiplier, cap rate, and cash-on-cash return for a 3-bed/2-bath single-family rental in the $175,000–$240,000 range. Include current market rent estimates, average vacancy, and how each market has performed YoY."

Cuts from market thesis to deal-level specifics in one prompt.

The Bottom Line

The 2026 rental market is not one market. It's two markets running in opposite directions — and the divergence is now large enough and sustained enough that it needs to drive your acquisition strategy, not just inform it.

Multifamily oversupply won't meaningfully resolve until late 2027 at the earliest. Until then, the Sun Belt markets hit hardest by the 2024 construction wave — Phoenix, Denver, Dallas, Austin — are value traps dressed as value plays. Meanwhile, the structural undersupply in single-family rentals, combined with elevated mortgage rates keeping buyers locked out of ownership, creates durable rent growth and pricing support for SFR landlords in the right markets.

The data is clear. Run your side-by-side in PropGPT, stress-test the multifamily deal with 2026 vacancy inputs, and stop treating every income property like it's the same trade.