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Sign code guides
Practical guides to sign permit costs, height limits, setback rules, illumination regulations, and wall sign area calculations for U.S. municipalities.
How much does a sign permit cost?
Sign permit fees vary widely by municipality — from $25 flat fees to formulas based on sign area or valuation. Learn what drives the cost and how to estimate it before you bid.
What is the maximum monument sign height in most cities?
Monument sign height limits typically run from 4 ft to 12 ft for commercial zones, with outliers at both ends. Find out what drives the limit and how to read your local ordinance.
Freestanding sign setback rules — what to know before you place the sign
Setback rules determine how far a freestanding sign must sit from property lines, roads, and structures. Violations mean relocation or removal. Here is how to read the rules before you dig.
Illuminated sign rules — what local codes actually regulate
Illumination rules cover light sources, brightness limits, curfews, and prohibited types. A sign that lights up legally in one city may violate the code next door. Here is what to check.
How to calculate maximum wall sign area under typical ordinances
Most wall sign area limits are expressed as a ratio of building frontage or wall area — not a fixed square footage. Learn the formulas, their variations, and how to work through the math for a real project.
What our 660,000-rule corpus actually says about digital signs
Of the 10,254 authority-holding sign codes we have actually read, only 11.7% address electronic message centers as their own category at all — and more than half the rules that do are prohibitions.
The 7 states where counties can't regulate your sign
72 tracked counties across 7 states carry a verdict saying the state itself denies them sign-code authority — 40.4 million residents where the county sign code is not the right place to look.
How towns actually define a 'monument sign'
No single definition of "monument sign" dominates municipal codes. A 3,000-row sample of ground sign type rules shows dozens of overlapping phrasings, some real distinctions and some paraphrase noise.
Wall sign area: the formulas towns actually use
Most municipalities do not cap wall sign area with a flat square-footage number. A 3,000-row sample of building sign formulas shows percentage-of-building-area rules dominate.
How long does a sign permit take? What 8,595 codes say
The most common stated sign-permit time frame is 10 days — but the median across every code that states a number is 30, and 43.7% of the rules contain no number at all. Planning off the mode is how schedules slip.
Sign setbacks by the numbers: what 18,000 codes actually require
We pulled every ground-sign setback rule in our corpus — 18,001 of them — and measured the actual distribution instead of quoting a rule of thumb. Here is what the numbers say, unit problems included.
How tall can a sign actually be? 20,000 codes, one distribution
We measured height-limit rules across 20,188 ground-sign codes instead of guessing at a typical number. The real distribution runs from just over a foot to well past 35 ft — here is the breakdown.
Digital sign brightness: the nits-vs-footcandles problem
Digital sign brightness rules use two incompatible measurement systems — nits and footcandles — and 83% of codes never quantify brightness at all. Here is what 1,131 brightness rules show, and why the unit matters as much as the number.
How long must a digital sign message hold? 8 seconds, usually
Minimum display time for digital sign messages clusters hard around 8 seconds — but 19 codes specify the hold in minutes or hours instead, and 1,144 never quantify it at all. The unit matters more than the number.
Temporary signs: the least standardized rule in the whole corpus
Temporary sign rules are the single largest attribute category in our corpus by volume — and also the least convergent. No one combination of area, height, duration, and permit terms covers even a fifth of the codes.
Window signs: the 25% rule (and its variants)
Across all 8,186 recorded window-sign area rules, 4,614 are expressed as a percentage of glass area and 1,903 of those say exactly 25% — which means the first measurement on a window sign job is the glass, not the sign.
Awning signs: two separate rules people mix up
Awning sign codes ask two independent questions — how high must the awning clear the sidewalk, and how is the sign area on it even measured — and 4,835 area rules are written in 3,929 different ways.
Who actually holds sign authority in America? All 33,535 governments, one chart
A verdict that covers just 0.2% of the governments we track can still cover 7.1% of the population, because sign authority is concentrated unevenly — here is the full breakdown by count and by population.
When your county's code — not your city's — actually governs
In Illinois and South Dakota specifically, a township sign code question is very often a county sign code question — 1,151 of the 1,272 cascade cases nationwide are in these two states alone.
Texas sign code guide — who actually holds authority
Texas holds half the nation’s "county cannot regulate signs" cases — 36 of 72 — all concentrated in one state. Here is what that means for who actually writes the sign code you need.
California sign code guide — who actually holds authority
California has the largest governments of any state we checked — about 125,000 residents each — and 89.1% of them write their own sign rules, third-highest of the six states in this series.
Florida sign code guide — who actually holds authority
Florida is the cleanest authority picture of any state we checked — 96% of the governments we track hold sign-code authority directly, with almost no unresolved or no-authority cases.
New York sign code guide — who actually holds authority
New York has the highest share of unresolved sign-code authority of any state we checked — 22.5% — a pattern that lines up with its dense, overlapping layers of villages, towns, and counties.
Pennsylvania sign code guide — who actually holds authority
Pennsylvania has more individually tracked local governments than any other state we checked — 2,504 — despite a comparatively modest 23.1M population, thanks to its granular township system.
Ohio sign code guide: how sign authority breaks down across the state
Across 2,324 tracked Ohio governments, 90.9% hold their own sign authority outright and only 0.4% are unidentified — the cleanest authority picture of any state we have checked except Florida.
How we actually read a million pages of municipal code
A live re-count of our sign-rule corpus returns 660,173 extracted rules spread across 492 categories. Here is how the extraction pipeline works, why sixteen categories carry 92% of the corpus, and what is in the long tail.
Why two towns in the same county can have opposite sign rules
In 93.7% of the counties where we can compare two or more local governments on the same ground-sign height rule, their limits disagree — and in 68.8% the gap is at least twofold. The pattern is governance, not geography.
40 ways to say 'monument sign': the vocabulary problem in municipal code
Municipal sign codes never agreed on shared terminology. Even a single concept — monument sign allowed alongside a taller pylon sign — shows up phrased at least 8 different ways across our data.
Township, county, or city: who actually writes your sign code
Townships are the only government type with a meaningful pattern of cascading to the county. Counties themselves skip adopting a sign code nearly a third of the time. What governs your sign depends heavily on government type, not just location.
What a sign code doesn't tell you
Across all 660,173 extracted rules, 9.65% carry a human-review flag and 88.1% carry high confidence. Here is what those numbers mean, why an earlier version of this article reported a far worse figure, and where automated sign-code research runs out of confidence.
Sign permit & zoning FAQ
Quick answers on who needs a permit, the federal/state/county/city/overlay hierarchy, variances, setbacks, illumination, digital signs, historic districts, fees, and timelines.
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