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The Rules · 10 min read

Zoning basics, without the jargon.

Zoning is the rulebook for what can go where. It looks complicated because it’s written by lawyers, for lawyers - but the ideas are simple. This is the short version you actually need.

1. What zoning actually does

Every parcel of land has a zoning designation - a short code like R-2 or B-1. That code points to a chapter in the local zoning ordinance that spells out three things:

  • What you can build there

    Houses? Apartments? A restaurant? A warehouse?

  • How big it can be

    Setbacks, height limits, density, lot coverage.

  • What else is required

    Parking counts, landscaping, stormwater management, signage rules.

If a project fits the rules of its zoning district, it’s by-right - the city or county has to approve it. If it doesn’t, the applicant has to ask permission (a special use permit, a variance, or a full rezoning).

2. The common districts

Every locality names its districts a little differently, but the categories are roughly the same. Here’s what you’ll see in Harrisonburg and Rockingham County:

R-1 / R-2 / R-3

Residential

Where people live. The number roughly tracks density: R-1 tends to be single-family houses on bigger lots; R-3 allows townhouses, small apartments, or higher unit counts per acre.

B-1 / B-2

Business

Commercial zones. B-1 is usually neighborhood-scale (a coffee shop, a small office). B-2 is broader - strip centers, restaurants, larger retail.

M-1

Industrial

Warehouses, manufacturing, distribution. Usually along rail lines or major roads. Not much foot traffic.

MX-U / Mixed-Use

Mixed-use

Buildings that combine housing above shops, or a walkable block with a mix of uses. Common in downtown-style redevelopments.

PDR / PUD

Planned district

A custom zoning package negotiated for one specific project. The city or county approves a master plan that governs the site instead of the standard rulebook.

A-1 / A-2

Agricultural

Farms, forests, rural residential on large lots. Common across Rockingham County. Development here almost always needs a rezoning.

Exact codes vary. Check the city or county zoning map for the real designation on any given parcel.

3. Four approval paths

By-right

Application → staff review → building permit → build

No public hearing. If the site plan meets the code, it gets approved. Most single-family homes, additions, and small commercial fit-outs go this route.

Special use permit

Application → staff → Planning Commission → Council/Supervisors

Two public hearings, typically. This is where neighbors can weigh in on things like drive-throughs, short-term rentals, or a use that’s unusual for the district.

Rezoning

Application → staff → Planning Commission → Council/Supervisors

The biggest lift. You’re asking the locality to change the rulebook for a parcel. Expect months of review, public engagement, and sometimes proffers.

Variance

Application → Board of Zoning Appeals

One hearing at the BZA. Usually about a specific dimensional problem (a setback, a height) - not about changing what you can build.

4. Glossary

The words planners use, translated.

By-right
A use the zoning district already allows. No public hearing, no vote - staff can approve it if the site plan meets the rules.
Special use permit (SUP)
Permission for a use that’s allowed in a district only if a board says yes. Usually requires a public hearing.
Rezoning
Changing the zoning designation of a parcel. Requires Planning Commission review and a City Council or Board of Supervisors vote.
Variance
Permission to bend a specific dimensional rule (a setback, a height limit) because of an unusual site condition. Board of Zoning Appeals decides.
Setback
The minimum distance a building must sit back from a property line (front, side, rear).
Density
How many housing units are allowed per acre. Higher-density zoning = more units on the same land.
FAR (Floor Area Ratio)
Total building floor area divided by lot area. A FAR of 1.0 on a 10,000 sq ft lot allows 10,000 sq ft of building.
Comprehensive plan
The long-range vision document (10-20 years) that guides how a locality wants to grow. Non-binding, but zoning changes are supposed to align with it.
Site plan
The engineered drawings that show exactly how a project will be built - buildings, parking, stormwater, landscaping, utilities.
Subdivision
Splitting one parcel into multiple parcels. Regulated separately from zoning, but often happens at the same time.
Nonconforming use
Something that was legal when it was built but wouldn’t be allowed under current zoning. Grandfathered in, usually.
Proffers
Voluntary commitments a developer offers as part of a rezoning - road improvements, cash contributions, design standards - to sweeten the deal.
Overlay district
An extra layer of rules on top of the base zoning. Common examples: historic districts, floodplain overlays, corridor overlays.
Certificate of occupancy (C.O.)
The document the building official issues when a project is legally ready to be used. The finish line.