Why Permits Aren't Turning into Dirt

Dennis Lee
5 hours ago
3 min read

I was digging through the latest data for the Top 50 U.S. counties by population, and one metric kept standing out: the gap between permits and actual construction.

We often treat supply data as a unified front, but I’ve been focusing on the friction between trailing 12-month permits (near-term intent) and the two-year construction pipeline (imminent supply).

The two signals actually tell very different things:

Building Permits → developer intent over the past 12 months
Construction Pipeline → units expected to deliver over the next two years

Usually, these two move in tandem. But the most fascinating stories aren't in the markets that are "balanced"—they are in the outliers where the data is completely lopsided. I started wondering: Why is one side of the equation missing?

The Multifamily Supply Gap: Permits vs. Construction Pipeline Summary

Below is the analysis of the top 50 U.S. counties by population. Percentile scores are computed based on two key metrics:

Building Permits: Total 5+ units over the trailing 12 months.
Construction Pipeline: Expected completions within the next 2 years.

*Sources: Market Stadium, U.S. Census Bureau, The Dodge Network*

1. The “Paper Tiger” Markets (High Permits | Low Pipeline)

Counties like San Bernardino (CA) and Riverside (CA) really stand out here. On paper, the intent is massive. The permits are there, the "yes" has been given. Yet, the actual construction pipeline is surprisingly thin.These counties aren't just building; they are delivering massive, market-shifting unit counts over the next two years. The sheer volume here will test absorption rates.

The Question: If the permission to build exists, why aren't the shovels hitting the dirt?
The Hunch: This suggests a market where the "will" is strong, but the "way" is blocked. Whether it’s high interest rates making projects "un-pencilable" at the last minute, or local labor shortages, these markets are sitting on a mountain of latent supply that may never actually materialize. It’s a bottleneck that creates a false sense of incoming competition.

2. The "Supply Cliff" (Low Permits | High Pipeline)

Then you have the opposite extreme: Mecklenburg (NC) and Montgomery (MD). These markets are currently "building like crazy," but the new permit queue has slowed to a trickle.

The Question: Why are we finishing so much but starting so little?
The Hunch: We are likely witnessing a "Supply Cliff." Developers are rushing to complete what was financed two years ago, but the pipeline for 2027 and beyond is being abandoned. For an observer, this looks like oversupply today, but it’s actually a setup for a massive supply vacuum in 24 months.

3. The "High-Velocity" Exceptions

Of course, you have places like Fulton (GA) and Maricopa (AZ) that seem to have the "permit-to-dirt" pipeline down to a science. They represent the baseline of what efficiency looks like—but they are becoming the exception, not the rule.

Why does this Mismatch matter?

The real takeaway for me isn't just "who is building the most." It’s about identifying where the signal (Permits) is disconnected from the noise (Construction). When a market is lopsided, it tells you that the local operating environment has changed faster than the data can keep up with.

I’m curious to hear from those of you in the trenches:

When you see a county with high permits but a low pipeline, do you see a "delayed opportunity" or a "red flag"? Does this match the reality you're seeing in your backyard?

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