Setbacks & Height Limits in Saint Paul

This guide explains the basic setback and height rules that apply to residential construction in Saint Paul under Chapter 66 of the Saint Paul Legislative Code. These numbers depend on your exact zoning district, overlay zones, and lot geometry, so always confirm with the Saint Paul Department of Planning and Economic Development before finalizing plans.

What Are Setbacks?

A setback is the minimum required distance between a building and a lot line. Setbacks are measured from the property line to the nearest point of the building (typically the wall, but eaves, bay windows, and chimneys can have their own rules).

Saint Paul's zoning code specifies front, side, and rear setbacks separately for each zoning district in Chapter 66. Corner lots have two "front" setbacks (one per street frontage) and typically one interior side and one rear.

Typical Residential Setbacks

For the most common single-family residential zones (R1-R4) in Saint Paul, expect approximately:

R1 is the most restrictive single-family district; R2, R3, and R4 progressively allow smaller lots and somewhat smaller side setbacks. The RT1 and RT2 two-family districts follow similar patterns but are designed for duplexes. Higher-density RM multi-family zones and B business zones use separate schedules.

Height Limits

Maximum building height in Saint Paul R1-R4 and RT residential zones is typically 30 ft, measured from average grade to the midpoint of a pitched roof (or the top of a flat roof). Accessory structures, including detached ADUs, are capped lower — around 20 ft.

Height rules get more complicated in:

• River corridor overlay — the Mississippi River Critical Area imposes additional height and bluff-line limits
• Historic districts — Summit Avenue, Hill District, and other heritage preservation districts may cap height by context
• Airport overlays — Holman Field and MSP approach zones limit height near flight paths
• Traditional Neighborhood (T) districts — form-based height standards tied to building type
• RM multi-family and B business zones — generally allow greater height (45 ft in RM2, up to 55 ft in B2)

Lot Coverage and Density

Beyond setbacks and height, Saint Paul uses lot coverage and minimum lot size to shape how much you can build:

• Lot coverage — Chapter 66 caps the percentage of the lot covered by buildings in each residential district. R1 is the most restrictive, with progressively higher coverage allowed in R2, R3, and R4.
• Minimum lot size — 5,000 sq ft in R1, stepping down in higher-density districts.
• FAR — Saint Paul uses floor area ratio primarily in traditional neighborhood and business districts rather than base single-family zones.

Common Exceptions and Encroachments

Chapter 66 allows certain features to project into required setbacks. Typical allowances include:

• Eaves and gutters (up to 2 ft)
• Chimneys (up to 2 ft)
• Uncovered porches, stoops, and steps
• Air conditioning condensers (subject to noise limits)
• Bay windows (limited projection)

Fences, retaining walls, and accessory structures have separate rules — check the Chapter 66 sections on accessory structures and fences.

State ADU Overrides

Minnesota has no enacted statewide ADU preemption. ADU rules are set locally — contact the city planning department.

How to Look Up Your Specific Requirements

1. Find your zoning district — use the Saint Paul zoning map through the Planning and Economic Development website
2. Read the district regulations — Chapter 66 of the Saint Paul Legislative Code lists setbacks, height, and lot coverage by zone
3. Check for overlays — river corridor, historic, and airport overlays can modify the base rules
4. Ask planning staff — call Planning and Economic Development at (651) 266-6565 for zoning information before you commit to design

Variances

If your project cannot meet the strict letter of the zoning code, you may apply for a variance through the Saint Paul Board of Zoning Appeals — a formal request to deviate from the rules based on practical difficulties specific to your lot. Variances are discretionary and require public hearings. See the Variance Application Guide for the general process.

Official Sources

See the sources linked in the frontmatter for the Saint Paul Legislative Code Chapter 66 and the Department of Planning and Economic Development. This guide is informational and is not a substitute for direct confirmation from planning staff.