Most Houston multifamily pitch decks still pencil insurance at around $600 a unit. The actual number is $840 to $1,140. That gap is not a rounding error — it is, increasingly, the difference between a deal that clears its debt service and one that becomes someone else's distressed acquisition. In the last three years, insurance stopped being a line item you glance at and became the input that quietly reprices the whole asset.
If you read one number on a Houston deal before you wire, read the insurance line.
The line item that ate 11.1% of Houston multifamily value
Nationally, multifamily property insurance is up 129% since 2018, to roughly $636 per unit per year — and it climbed another 27.7% year over year in the most recent twelve months tracked by Yardi Matrix. Insurance was the single largest driver of the 7.1% jump in total operating expenses (now about $8,950/unit). That is the calm version of the story.
Houston is the loud version. Per-unit multifamily insurance here runs $70–$95 a month — $840 to $1,140 a year — after a 38% climb, well above the national average. And the consequence is not hypothetical: rising premiums alone are credited with a 11.1% drop in Houston multifamily values. Insurance is no longer an expense you manage; in this market it is a valuation input you underwrite.
| Metric | National multifamily | Houston multifamily |
|---|---|---|
| Insurance cost per unit / year | ~$636 | $840 – $1,140 |
| Insurance cost per unit / month | ~$53 | $70 – $95 |
| Recent rate change | +27.7% YoY (+129% since 2018) | +38% |
| Direct effect on value | Largest opex driver | ~11.1% value decline attributed to premiums |
| 2026 budget change | +$275 – $356 / unit | At or above the top of that range |
"Insurance is stabilizing, so it's priced in." The NMHC's 2024 risk survey did record the first rate decline since 2017 — after 27 straight quarters of increases. But that decline is off a doubled base, and Houston still runs 50–80% above the national per-unit number. The trend is softening; the level is not. Anyone using "it's stabilizing" to wave away a thin insurance assumption is reading the headline and skipping the math.
The pro-forma gap most decks hide
Here is why a $400-per-unit assumption error is not cosmetic. Insurance flows straight through net operating income, and NOI gets capitalized into value. A small per-unit miss becomes a large equity miss.
Take a 200-unit Houston deal where the pitch assumes $600/unit in insurance and the real, renewed number comes in at $1,000/unit — squarely inside the Houston range above.
| Line | Pitch assumption | Actual | Difference |
|---|---|---|---|
| Insurance per unit / year | $600 | $1,000 | +$400 |
| × 200 units | $120,000 | $200,000 | +$80,000 NOI miss |
| Capitalized at a 6% cap rate | — | — | ≈ $1.33M of value erased |
Eighty thousand dollars of "minor" expense optimism is $1.33 million of value at a 6% cap. On a deal carrying 2021-vintage bridge debt into the 2026 maturity wall — where roughly $162 billion of multifamily loans come due and 60% of the 2021–22 vintage matures in the back half of the year — an $80K NOI hole is often the exact gap between refinancing and a forced sale. Insurance-driven NOI misses are now a leading trigger for rescue capital, not a footnote to it.
[!PRO_TIP] Before you take a sponsor's insurance number at face value, do the reverse: divide their assumed annual premium by unit count. If the per-unit figure lands under ~$800 on a Houston deal, the burden of proof is on the deck — ask for the actual binder or the most recent renewal quote, not a "market estimate."
The 5-point insurance exhibit to demand
Strong operators already have this. Weak ones improvise it when asked — and that tell is itself the filter. Ask any Houston sponsor for a one-page insurance exhibit covering five things:
- Per-unit premium vs. market. The actual quoted or bound number per unit, benchmarked against the $840–$1,140 Houston band — not a national average borrowed to look conservative.
- Deductible and named-storm structure. Wind/hail and named-storm deductibles in a Gulf market are often a percentage of insured value, not a flat dollar figure. A "low premium" with a 5% named-storm deductible can be a worse risk position than a higher premium with a 2% deductible.
- Carrier quality. The rating and admitted/non-admitted status of the carrier(s). A cheap premium from a thinly capitalized or non-admitted carrier is a different product than the same number from an A-rated insurer.
- Mitigation capex. Roof age, wind-rated improvements, and documented loss-control work — the spend that actually earns the lower renewal, with receipts.
- Three-year premium history. The trajectory, not the snapshot. A premium that just stepped up 40% on renewal tells you far more about next year's pro forma than this year's bound figure does.
If a sponsor can produce all five in a day, you are likely dealing with a disciplined operator. If items 2 through 5 take a week to materialize, you have learned something the rent comps will never tell you.
The spread is the alpha, not the trend
Everyone is reading the same macro story: premiums rose, premiums are flattening. That is the trend, and it is priced into nobody's advantage because everybody has it. The edge in Houston is the spread between operators — the disciplined sponsor who shopped carriers, documented mitigation, and structured deductibles intelligently versus the one who renewed on autopilot and hid the gap behind an optimistic pro forma.
That spread is wide enough, in this market, to flip deal outcomes. Which means the insurance line is doing double duty: it is both an expense to underwrite and a character reference for the person running your money. Read it first, and a lot of the rest of the diligence gets easier.
In 2026 Houston multifamily, insurance is the cleanest operator-selection filter an LP has. National premiums up 129% since 2018; Houston at $840–$1,140/unit after a 38% jump; an 11.1% value drag already on the board. Underwrite the operator's insurance behavior, not just the building's — the deck that low-balls the premium is telling you who it is.
This is investor education, not insurance or investment advice; confirm every premium, deductible, and carrier detail against the actual binder before relying on it.
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