Seattle Zoning Explained: What You Can Build and Where

Seattle's zoning code controls what goes on every parcel in the city — how tall, how dense, what uses. If you've ever wondered why a six-story apartment building can go up on one block but not the next, zoning is the answer.

How Seattle Zoning Works

Every parcel in Seattle is assigned a zoning designation that controls:

• Allowed uses such as residential, commercial, industrial, or mixed
• Height limits that set the maximum building height in feet
• Density, which controls how many units or how much floor area is allowed relative to lot size
• Setbacks that determine how far the building must be from property lines
• Parking requirements including minimum (and sometimes maximum) parking ratios

The zoning designation is expressed as a code like "LR3" or "NC2-65", where the letters indicate the zone type and the numbers indicate density level and height limit.

Residential Zones

SF (Single Family)

The lowest density zone. Allows one home per lot (plus an accessory dwelling unit under current rules). Most of Seattle's residential land is zoned SF, though the One Seattle Plan is changing some SF areas to allow more housing.

LR (Lowrise)

Allows apartments, townhomes, and rowhouses. LR zones come in three density levels:

• LR1 allows up to 3 stories at lower density, including townhomes and small apartments.
• LR2 allows up to 3-4 stories at moderate density, common for 8-20 unit apartment buildings.
• LR3 allows up to 4 stories at higher density, with larger apartment buildings often reaching 20-50 units.

Design Review is typically required for projects with 8 or more units in LR zones.

MR (Midrise)

Allows apartment buildings up to 5-7 stories, found along major arterials and near urban villages. The One Seattle Plan simplifies midrise standards so that apartment construction pencils in these zones — the old four-story cap was too short to justify the cost.

HR (Highrise)

Allows towers, meaning residential buildings with no strict height limit (though FAR and other controls apply). HR zones are limited to Downtown, South Lake Union, and a few other designated areas.

Commercial and Mixed-Use Zones

NC (Neighborhood Commercial)

The most common commercial zone in Seattle. NC zones line arterial streets throughout the city and allow a mix of commercial and residential uses. NC zones come with height suffixes:

• NC1-30 is small-scale neighborhood commercial, up to 30 feet
• NC2-40 allows moderate commercial, up to 40 feet (3-4 stories)
• NC2-65 allows larger mixed-use, up to 65 feet (5-6 stories)
• NC3-85 covers major arterial commercial, up to 85 feet (7-8 stories)

Most new mixed-use projects in Seattle are built in NC zones, with ground-floor retail or commercial use required.

C (Commercial)

Similar to NC but with fewer residential restrictions. Found in larger commercial districts and employment centers.

Industrial Zones

IG (Industrial General)

Allows manufacturing, warehousing, and heavy commercial uses. No residential. Found in Georgetown, SoDo, and Interbay.

IC (Industrial Commercial)

A transitional zone allowing a broader mix of commercial uses alongside industrial. Some limited residential may be allowed depending on location.

Understanding Zoning Overlays

In addition to the base zone, Seattle applies overlays that modify what's allowed:

• Design Review overlay triggers design review for projects above certain thresholds
• Pedestrian overlay (P) requires active ground-floor uses (retail, restaurants) along designated pedestrian streets
• Station Area overlay applies special rules near light rail stations, often allowing more density

How to Check Zoning for a Specific Property

1. Seattle GIS Map is the city's online zoning map at maps.seattle.gov, showing the zoning designation for every parcel
2. BuildVue provides project listings on BuildVue that show the zoning for each project site alongside all permit and development information

Why Zoning Matters

Zoning decides what you can build, and an upzone can double the value of a parcel overnight. If you're buying land, zoning is the first thing to check. If you're a contractor, the zone tells you whether you're bidding on a three-story wood-frame or a ten-story concrete tower. And if you live next to a newly upzoned lot, zoning tells you what could go up next door before the land use notice appears.

The One Seattle Plan is redrawing parts of this map through 2026 — some SF lots are becoming LR, some LR is becoming MR. If you haven't checked the updated zoning map for your area of interest, now is the time.