What it means
A permit records that a plan has been checked against building and zoning rules and that construction may proceed. Permit counts are published by government statistics agencies, usually monthly, split between residential and non-residential work and broken down by region.
The reason finance people care has little to do with construction law. A developer applies for a permit only after committing real money to land, design and finance, so a rising permit count is evidence that businesses and households are willing to make long term commitments.
Permits sit at the front of a chain: permits lead to housing starts, starts lead to completions, and completions drive demand for materials, appliances, furniture, removals and mortgages. That chain is why a supplier of kitchen units can use permit data to plan its capacity six to nine months ahead.
The numbers are noisy and need care. Monthly figures are heavily affected by weather and by a handful of very large projects, so analysts work with seasonally adjusted data and three month moving averages rather than reacting to a single month.
A permit is also permission, not a promise. In a downturn a meaningful share of approved projects are delayed or abandoned, so the gap between permits issued and construction actually started is itself a useful stress signal.
In practice
Real-world examples
Example 1
A regional builders' merchant tracks permits in the five counties it serves and sees a 30% year on year fall in a single quarter. It slows its own stock purchasing and delays a planned depot expansion, months before the drop shows up in its sales figures.
Example 2
A commercial property investor watches non-residential permits in a city centre and notices a surge in office approvals. Reading it as a sign of future oversupply, the investor holds back from buying an office block and looks at industrial units instead.
Example 3
An economist at a bank combines building permits with mortgage applications to build a short term housing forecast. The permits give the supply side and the applications give the demand side, and together they inform the bank's provisioning for construction lending.
Think of it
Building permits are approvals for construction-a look ahead at building activity.
Formula
Calculation
Year on year change in permits = (permits this period - permits in the same period last year) / permits in the same period last year x 100
A county issues 1,250 residential building permits in the first quarter of this year, against 1,000 in the same quarter last year. The change is (1,250 - 1,000) / 1,000 x 100 = 250 / 1,000 x 100 = 25%.
A window supplier in that county converts roughly 1 permit in 10 into an order worth an average of $24,000. The 250 extra permits therefore point to about 250 / 10 = 25 additional orders, or 25 x $24,000 = $600,000 of likely revenue.
That revenue does not arrive immediately. Windows are typically fitted several months into a build, so the supplier plans for the $600,000 to land six to nine months after the permits were issued and staffs its installation teams accordingly.Case study
Seen in the real world
The following is a fictional, illustrative story. Ridgeway Fixings, an invented supplier of fastenings and brackets to housebuilders, had always planned production from its own order book. That gave it about six weeks of visibility, which was far shorter than the four month lead time on its imported raw steel.
The fictional operations director began charting seasonally adjusted residential permits across the firm's three main regions on a three month moving average. When the average turned down by 12% two quarters running, Ridgeway cut its steel commitments and let temporary contracts lapse rather than carrying the cost into a shrinking market.
In the illustrative outcome, the slowdown arrived in Ridgeway's order book about seven months after the permit data turned, by which time the company had already adjusted. Its competitors, working only from current orders, spent the following year discounting to clear stock they had committed to at the top of the cycle.
Watch out
Common mistakes
- Reading a single month's permit number as a trend, when weather and one large development can swing the figure dramatically.
- Assuming every permit becomes a building, which overstates future activity because approvals are routinely delayed or dropped.
- Applying national permit data to a local business whose market is a single city with quite different conditions.
Questions
People also ask
How far ahead do building permits lead actual construction spending?
Typically a few months to a year, depending on project size, with large commercial schemes taking far longer than single homes.
Are building permits useful outside the construction industry?
Yes, they help anyone selling into new buildings, including furniture, appliance, flooring, insurance and mortgage businesses.
Why are permits seasonally adjusted?
Because applications naturally cluster in warmer months, and adjustment strips out that predictable pattern so genuine changes in direction are visible.
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