Leading vs. Lagging Indicators — What to Watch and What to Ignore

Most investors look at the wrong data. They look at recent rent growth, recent cap rates, and recent sale prices — and they extrapolate forward. The result is that they buy markets that already had their run and miss markets that are about to start theirs.

The fix is to distinguish between leading indicators (data that predicts what's coming) and lagging indicators (data that describes what already happened). This distinction is the single most useful mental model in market analysis.

The two categories

Lagging indicators — describe the past

• Sale prices and price-per-unit/SF
• Cap rates
• Recent rent growth (last 12 months)
• Recent vacancy
• Active listing inventory

These are the numbers brokers, appraisers, and the trade press talk about. They're easy to find — every market report leads with them. They're real and accurate. They're also useless for predicting where a market is going, because they describe a state that's already established.

When the trade press says "Phoenix multifamily rents grew 12% last year," they're telling you what happened. By the time you read it, prices have already adjusted upward. You're not finding an opportunity — you're chasing one.

Leading indicators — predict the future

• Population growth (especially net migration)
• Job formation and job announcements
• Wage growth
• Building permits issued
• Construction starts (under construction pipeline)
• New business formation
• Domestic migration patterns
• Major employer relocations
• Highway, airport, and infrastructure investment
• School enrollment trends

These move 12-36 months before rent and price changes show up. A market with strong population growth and weak permit issuance today will have rising rents in 18 months. A market with declining population and strong permit issuance today will have falling rents in 18 months — even if rents are still rising right now.

The relationship in pictures

Time →

Leading indicators:
  ░░░░░░░██████████░░░░░░░     ← Population in-migration spikes here
                ↓
                Rents respond 12-18 months later
                ↓
Rent growth:
  ░░░░░░░░░░░░░░░██████████░░  ← Rent growth shows up here
                              ↓
                              Cap rates compress 6-12 months later
                              ↓
Cap rates:
  ░░░░░░░░░░░░░░░░░░░░░██████  ← Prices peak here, deals dry up

The investor reading rent growth news is investing two years too late. The investor reading population data is investing right on time.

The most important leading indicators

If you only had time to track three things on a market, these are the ones:

1. Net domestic migration

People moving from one US state or metro to another. Not international immigration, not births minus deaths — domestic moves, where someone in Chicago decides to relocate to Phoenix.

Net domestic migration is the single best predictor of housing demand and, indirectly, of all the asset classes that depend on population (multifamily, retail, healthcare, self-storage, suburban office).

Sources:

• US Census Bureau migration estimates (annual, free)
• IRS state-to-state migration data (based on tax returns, very high quality)
• Moving company data — U-Haul, United Van Lines (proprietary but published)

The IRS data is particularly powerful because it comes directly from tax returns and shows actual moves with adjusted gross income attached. When someone moves from California to Florida, you can see their AGI follow them — which is the real measure of "money flowing into the market."

What to look for:

• Net positive migration sustained over 5+ years
• AGI per migrant trending upward (the people moving in are wealthier than the average resident)
• The MSA's metro is gaining migrants from larger, more expensive metros (the "fleeing California" effect)

2. Job formation

Are jobs being created in this market? Specifically, are they being created at rates faster than the national average?

Sources:

• Bureau of Labor Statistics monthly state and metro reports
• Local economic development agency reports
• Major employer announcements (Site Selection magazine, regional business journals)

What to look for:

• Total employment growing faster than the national rate
• Diverse industry mix (not single-employer dependent)
• Higher-wage sector growth (tech, healthcare, finance, advanced manufacturing)
• Specific announcements of large new facilities — a 5,000-employee Amazon fulfillment center creates downstream demand for everything from apartments to fast food

A market with sustained 2-3% annual job growth is a market where rent demand is rising. A market with 0% or negative job growth is a market where rent demand is shrinking, even if last year's rents looked fine.

3. Building permits

How much new supply is coming on line? Permits are the leading indicator of supply because they precede construction starts by 3-6 months and completions by 12-24 months.

Sources:

• Census Bureau building permit data (free, monthly)
• CoStar / RentCafé (proprietary but more granular)
• Local planning department records

What to look for:

• Permits running BELOW recent absorption — supply-constrained, rents will rise
• Permits running ABOVE absorption — oversupply coming, rents will flatten
• Specific submarkets where permits are lagging the broader MSA — pockets of opportunity

The interaction matters. A market with strong job growth AND constrained permits is a great market. A market with strong job growth AND a flood of new permits is a market about to see rents flatten as supply catches up.

A worked example — the supply-demand math

Here's how to combine the three indicators:

Market A: Tampa, FL

• Net domestic migration: +25,000 households per year
• Job formation: +30,000 jobs per year (1.5% growth)
• Multifamily permits issued: 8,000 units per year
• Multifamily completions absorbing: 7,500 units per year

Net household formation: ~25,000 (each migrant household = one new housing unit needed). Net new units delivered: ~7,500. Demand exceeds supply by ~17,500 units per year. Rent growth and rising prices for the foreseeable future.

Market B: Phoenix, AZ (in 2023-2024)

• Net domestic migration: +18,000 households per year
• Job formation: +25,000 jobs
• Multifamily permits issued: 25,000 units per year (huge construction wave)
• Multifamily completions: 22,000 units per year

Net household formation: ~18,000. Net new units delivered: ~22,000. Supply exceeds demand by ~4,000 units per year. Rent growth flat or negative, vacancy rising. Cap rates expanding because the market is over-supplied for the next 18-24 months.

This is why Phoenix multifamily had a tough 2023-2024 despite still being a "growth market" — supply got ahead of demand. Most investors saw the rent growth slowdown 12 months too late. The permit data signaled it 18 months in advance.

The lagging indicator trap

Three classic mistakes from chasing lagging data:

Mistake 1: "Last year's rent growth was 8%, so I'll underwrite 5% going forward"

8% rent growth typically means the market is at the top of a cycle. Going-forward growth is more likely 1-3% as supply catches up. Underwriting 5% means you're paying for growth that probably won't materialize.

Mistake 2: "The cap rate just compressed 50 bp — this market is hot"

Cap rate compression is great if you owned through it. It's bad if you're buying at the bottom of the compression. The next 100 bp move is more likely to be expansion than further compression.

Mistake 3: "Sale comps show $200/SF — this is a $200/SF market"

Sale comps are months or years old. Today's market may already be at $220/SF or $180/SF. Use comps as a directional sanity check, not as a precise price benchmark — and always weight recent transactions heavily.

The leading indicator habit

Make this a monthly discipline:

1. Subscribe to a few free data sources: Census migration estimates, BLS state employment, Census building permits
2. Pick 2-3 markets to track monthly: your home market, plus 1-2 you're targeting
3. Build a simple dashboard: rows for each market, columns for each indicator, updated monthly
4. Watch for inflection points: when a previously hot indicator starts to slow, or when a quiet indicator starts to accelerate

Over time, you'll develop a feel for which markets are about to break out and which are about to top. This is how the best operators in the industry think — not by reading what already happened, but by watching what's about to.

What to take away

• Lagging indicators (cap rates, recent rent growth, sale prices) describe yesterday
• Leading indicators (migration, jobs, permits) predict tomorrow
• The lag between leading and lagging is 12-24 months — enough time to act
• The three core leading indicators: net domestic migration, job formation, building permits
• A great market has rising migration + rising jobs + supply-constrained permits
• A topping market has the same demand but accelerating permits — supply catching up

Next lesson: how to actually pull and read demographic data, including the free government sources every investor should have bookmarked.