Why your city has to ask permission

In 2024, New York City wanted to lower the speed limit on its own streets. It could not simply do it. It had to go to Albany and be granted the power, and this is the ordinary condition of American cities rather than an oddity of that one.

Dillon’s Rule

The default position has a name and a judge attached to it. Under Dillon’s Rule, a local government holds only the powers expressly granted to it, those fairly implied by the express grants, and those essential to its declared purposes. The operative half is the tie-breaker: where there is reasonable doubt whether a power was conferred, it was not conferred. Doubt goes to the state.

Many states moved away from that in the early twentieth century by writing home-rule provisions into their constitutions or statutes. The result is a patchwork rather than a rule. The National League of Cities counts 31 Dillon’s Rule states, 10 home rule states, eight that apply Dillon’s Rule only to certain municipalities, and Florida, which applies home rule to everything except taxation.

Even that undersells the variation, because authority is not one thing. It is usually parcelled out in four separate areas: structural, meaning the power to choose your form of government; functional, the power to govern locally; fiscal, the power to decide what to tax and at what rate; and personnel, the power to set your own employment rules. A city can be generously treated in one and tightly held in another. Fiscal authority is very often the tightest, which is why a city with real power over its zoning may have almost none over its revenue.

Preemption

The other half of the story is that a grant can be withdrawn. A state can preempt a local ordinance, either by legislating over the top of it or by expressly forbidding cities to act in that area at all. Preemption has been used across the political spectrum and on almost every subject a city legislates about.

This page takes no position on any particular use of it. The structural point is the one worth carrying: a local ordinance that survives a campaign, a hearing and a council vote can be undone by a legislature that never held a hearing on it, and the residents who won the local fight have no obvious moment at which to notice it happening.

What this does to a resident

Two things, both quiet. The first is misrouting. A problem that is visibly local, on a local street, gets taken to the local official, who explains that the power sits in the state capital. That exchange happens thousands of times a day and it teaches both people the same lesson, which is that contacting government does not work.

The second is that local power feels permanent when it is not. If your city can set its speed limits today, it is worth knowing whether that is because it always could, or because the state granted it recently and could revisit it. Those two situations look identical from the pavement.

Where this leaves you

The practical upshot is unglamorous and genuinely useful: for a surprising share of local problems, the state legislator is the right person to contact, and almost nobody can name theirs. State legislative races draw a fraction of the attention of city ones, in a body that holds the power the city is asking for.

Which is the pattern this whole series keeps arriving at from different directions. The information is public, the structure is written down, and the only people who have it are the ones who already needed it. Finding the right door is a research project, and it gets you as far as the door.