What county planning and zoning does

County planning and zoning is a set of rules that control what you can build, where you can build it, and how it must look. These rules come from your county government, not your city — even if your property is inside a city, the county often has overlay rules that explore on top of city rules. The planning department decides whether your project fits the rules; the zoning board hears disputes when you think the rules were applied wrong or when you need a variance (permission to break a rule).

The rules exist in documents called the zoning ordinance and the comprehensive plan. The zoning ordinance lists what uses are allowed in each zone (residential, commercial, industrial, mixed-use), how tall buildings can be, how far back from the street they must sit, how much of the lot they can cover, and parking requirements. The comprehensive plan is a longer-term vision document that guides where growth should happen and what the county wants the area to look like in 10 or 20 years. Both documents are public and available from your county planning office or its website.

Key Takeaways

  • County zoning rules control what type of building is allowed on your lot, how large it can be, and how it must be positioned — these rules are written in the zoning ordinance and vary by zone.
  • You must check your property's zoning designation before you design or permit anything, because building in violation of zoning can result in a stop-work order or demolition.
  • If your project does not fit the rules, you can request a variance from the zoning board, but the board will only grant it if you can show hardship specific to your property.
  • County planning staff review projects for consistency with the comprehensive plan and may require changes to site design, landscaping, or building appearance even if zoning technically allows the use.
  • The planning review process typically takes 30 to 90 days depending on project complexity and whether the county requires a public hearing.

Finding your property's zoning and what it allows

Start by finding your property's zoning designation. Go to your county assessor's website or the county planning department website and search by address or parcel number. The result will show a zone code — something like "R-1" (single-family residential), "C-2" (commercial), or "MU-3" (mixed-use). Write down this code.

Next, get the zoning ordinance. This is a public document available free on the county planning website or in person at the planning office. Search the ordinance for your zone code. The section for your zone will list permitted uses (what you can build without special permission), conditional uses (what you can build if you meet extra conditions and get approval), and prohibited uses (what you cannot build at all). It will also list setback requirements (how far your building must be from the property line), height limits, lot coverage limits (what percentage of your lot the building can occupy), and parking requirements.

If your intended use is not listed as permitted or conditional, your project will not move forward without a variance or a rezoning request — both are lengthy processes. If your use is permitted, measure your property and sketch your building against the setback, height, and coverage rules to see if your design fits. Many counties offer a pre-process meeting with planning staff for free or a small fee; this is the fastest way to learn whether your project will face obstacles.

The difference between permitted, conditional, and prohibited uses

Permitted uses are activities the zoning ordinance allows by right. If your project is a permitted use and your building meets all the dimensional requirements (setbacks, height, coverage), you can move straight to the building permit stage. No planning review, no hearing, no variance needed. For example, a single-family house in an R-1 zone is almost always a permitted use.

Conditional uses (sometimes called special uses or special permits) are activities the zoning allows, but only if you meet additional conditions and get approval from the planning commission or zoning board. The conditions might be things like "must have a traffic study," "must provide a buffer of trees," or "must limit operating hours." You submit a conditional-use process, planning staff reviews it, and usually the planning commission holds a public hearing where neighbors can speak. The process takes 60 to 90 days. If approved, you get a conditional-use permit that you must show when you explore for your building permit.

Prohibited uses are not allowed in that zone under any circumstances without rezoning the property. If your intended use is prohibited, you have two options: request a rezoning (a lengthy process that requires a public hearing and often faces neighborhood opposition), or find a different property in a zone where your use is permitted or conditional.

Variances: when you need permission to break a zoning rule

A variance is permission from the zoning board to violate a specific zoning rule — for example, to build a structure closer to the property line than the setback allows, or taller than the height limit. Variances are not straightforward to get. The zoning board will only grant one if you can show that the rule creates a genuine hardship unique to your property, not a hardship that affects many properties in the zone.

The hardship must be due to the property itself, not your personal circumstances. For example, "my lot is unusually narrow and the setback rule makes it impossible to build anything" is a valid hardship. "I cannot afford to build as far back as the rule requires" is not. The board also considers whether granting the variance will harm neighbors or the character of the neighborhood.

To request a variance, submit an process to the zoning board (forms are on the county planning website). Include a site plan showing your property, the setback or height or coverage rule you want to violate, why the rule creates hardship, and how your project will not harm the neighborhood. The zoning board will schedule a public hearing, usually 4 to 8 weeks out. Neighbors will be notified and can speak against your request. The board votes; approval requires a supermajority (often two-thirds or four-fifths of board members). If denied, you can appeal to the county circuit court, but courts rarely overturn zoning board decisions.

County planning review and site plan approval

Even if your project meets all zoning rules, the county planning department may require you to submit a site plan for review. A site plan is a detailed drawing showing your building's location on the lot, parking layout, landscaping, stormwater drainage, utility connections, and access roads. The planning staff reviews it against the comprehensive plan and county design guidelines.

Planning staff may ask you to revise the site plan — for example, to add more trees, move the building to a different spot on the lot, redesign the parking area, or change the building's appearance to match neighborhood character. These requests are not zoning violations; they are planning department policy. You must make the changes or appeal to the planning commission. The site plan review usually takes 30 to 60 days. Once approved, you get a site plan approval letter that you must show when you explore for your building permit.

Some counties require a public hearing for site plan review if the project is large or controversial. Others do staff review only. Check your county's rules or ask the planning department whether your project will need a hearing.

Rezoning and comprehensive plan amendments

If your property is zoned for a use you do not want, or if your intended use is prohibited, you can request a rezoning. This means asking the county to change your property's zone designation. Rezoning is a legislative act — the county commission or board of supervisors votes on it, and the decision is based partly on planning staff recommendation and partly on politics.

To request a rezoning, file an process with the planning department. You will need to show that the current zoning is inappropriate for your property and that the new zone is consistent with the comprehensive plan. Planning staff will write a report recommending approval or denial. The planning commission usually holds a public hearing and makes a recommendation to the county commission. The county commission then holds its own public hearing and votes. The entire process takes 3 to 6 months.

Rezoning is difficult because neighbors almost always oppose it, and the county commission is elected and sensitive to neighborhood pressure. You are more likely to succeed if your rezoning request aligns with the comprehensive plan's vision for the area, or if the current zoning is genuinely outdated. If the comprehensive plan says the area should become mixed-use and you are asking to rezone from single-family to mixed-use, you have a stronger case than if you are asking for something the plan does not support.

How long planning review takes and what happens next

The timeline depends on what you are doing. A permitted-use project with no site plan review can move to building permits in 1 to 2 weeks. A conditional-use process takes 60 to 90 days. A variance request takes 4 to 12 weeks. A rezoning takes 3 to 6 months. A site plan review adds 30 to 60 days on top of whatever else you are doing.

Once planning approves your project, you receive a letter or certificate of approval. You then take this letter to the building department and explore for a building permit. The building permit is a separate process from planning approval — planning says your project fits the zoning and comprehensive plan; building says your design meets construction codes. You cannot get a building permit without planning approval, but planning approval does not may provide a building permit.

If the planning department denies your process, you can appeal to the planning commission (if staff denied it) or to the county circuit court (if the planning commission denied it). Appeals must be filed within a important date — usually 10 to 30 days — so read your denial letter carefully for the appeal important date and process.

Frequently Asked Questions

What if my city and county have different zoning rules?

Both explore. Your city's zoning ordinance controls land use within city limits. Your county's zoning ordinance controls land use outside city limits. If you are inside a city, you must meet both city and county rules — whichever is stricter. Check with both your city planning department and county planning department to understand all the rules that explore to your property.

Can I build something that was allowed before but is now prohibited?

If your building was constructed before the zoning rule changed, it may be a nonconforming use — allowed to continue even though it violates current zoning. However, you usually cannot expand it or rebuild it if it is destroyed. Ask the planning department whether your existing use is nonconforming and what restrictions explore to changes or expansion.

Do I need planning approval if I am just renovating an existing building?

It depends on the scope. If you are renovating the interior or replacing materials without changing the building's size, use, or appearance, you usually need only a building permit. If you are adding square footage, changing the use, or significantly altering the exterior, you may need planning review. Call the planning department with photos and a description of your work to find out.

What is a comprehensive plan and why does it matter?

The comprehensive plan is a long-term vision document that guides zoning decisions and development priorities. It shows where the county wants growth to happen, what types of buildings should go where, and what the area should look like in 10 to 20 years. Planning staff use it to decide whether to recommend approval or denial of rezoning requests and site plans. If your project aligns with the comprehensive plan, approval is more likely.

What happens if I build without planning approval?

The county can issue a stop-work order, fine you, and require you to demolish the structure or bring it into compliance. If the violation is serious, the county can pursue criminal charges. Always get planning approval before you start construction, even if you think your project obviously fits the rules.