County zoning can be the right source for a sign project, but being outside city limits does not prove it. Establish the county's legal power, an adopted ordinance, and coverage of the project location. Then check who administers the resulting approval.
The four records to request
| Record | What it establishes |
|---|---|
| State enabling law or charter authority | The legal route for county regulation and its limits. |
| Enacted ordinance or resolution | That the county exercised the power; include amendments and effective dates. |
| Adopted map and parcel confirmation | That this location lies within the ordinance's territory and district. |
| Administration or intergovernmental agreement, if relevant | Which office receives the application and whose standards it applies. |
An application form proves that a program exists, not that every parcel in the county belongs in it. Similarly, a county-hosted map can display a municipality's zoning. Ask for the name of the adopting government as well as the website hosting the document.
Keep these records in the authority and source worksheet. It provides space for source versions, the question each document answers, and gaps that still need an office response.
Different states supply different county routes
Pennsylvania: an adopted county ordinance can fill a gap
Municipalities Planning Code section 602 limits county zoning to land in municipalities without a zoning ordinance when the county ordinance is introduced, and until the municipality's ordinance takes effect. A municipality's subsequent zoning enactment repeals the county zoning within that municipality. This requires checking both governments' records; a township having no zoning does not prove the county adopted any.
Ohio: territory and voter approval matter
Under Revised Code section 303.11, a county rural zoning plan takes effect in the townships where the required vote approves it, excluding those that do not approve. Sections 303.22 and 519.22 then address competing county and township plans, including their adoption sequence and a voter-approved replacement. A countywide document title alone cannot settle coverage.
Florida: check the charter and joint agreements
Section 163.3171 generally assigns county planning authority to its unincorporated territory, with provisions for joint municipal agreements. A charter county may also exercise authority within municipalities as its charter provides. Neither “always county outside a city” nor “never county inside a city” captures the whole statute.
Work through an ambiguous address
Suppose a hypothetical shop uses a nearby city's mailing name, while the proposed sign stands outside the city boundary. First obtain boundary confirmation for the sign point. Next ask the county whether its zoning reaches that parcel and whether a township, municipal extension, or agreement affects the answer. Keep the named ordinance and the office's written explanation with the plan.
If the county replies that it only handles structural review, ask which office handles sign placement or zoning. If both offices say there is no zoning, record that limited answer and separately ask about applicable building, electrical, road, and state advertising requirements. Do not turn a zoning answer into permission to install.
When two offices give different answers
Send both the same parcel identifier and marked plan. Ask whether the disagreement concerns a boundary, adoption date, delegation, or a separate type of permit. Request the controlling document for that issue. Do not choose whichever office has the easier form: resolving the authority question comes before designing around its rules.
Primary sources and related guides
- Pennsylvania MPC section 602: conditional county zoning within the MPC framework.
- Ohio section 303.11, 303.22, and 519.22: adoption and competing plans.
- Florida section 163.3171: territorial authority, charters, and agreements.
These are state frameworks, not parcel determinations. Continue with the Pennsylvania, Ohio, or Florida checklist.