Duluth, MN Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- R-1 front yard
- Smaller of 20 ft. or block average
- R-1 general side yard
- 6 ft.
- Narrow-lot side yard
- 3 ft. (30 ft. or less frontage)
- R-1 rear yard
- 15 ft.
- Corner lot front side yard
- 15 ft.
- Compliance order minimum
- 14 days to correct
Summary
In the City of Duluth, the Unified Development Chapter sets fixed yard setbacks for the R-1 Residential-Traditional district: a front yard tied to the block face, a 6-foot general side yard, and a 15-foot rear yard, enforced by the building official before any permit issues.
TABLE 50-14.5-1 R-1 DISTRICT DIMENSIONAL STANDARDS ... STRUCTURE SETBACKS Minimum depth of front yard The smaller of 20 ft. or average of adjacent developed lots facing the same street Minimum width of side yard (oneand twofamily) General 6 ft. Lots with less with 30 ft or less of frontage 3 ft. Two-family shared wall 0 ft setback for portion of the principal structure with the shared wall ... Corner Lot: width of front side yard Principal and accessory structures 15 ft. Minimum depth of rear yard 15 ft.
Full Breakdown
5-1 of the Unified Development Chapter (Chapter 50) governs structure setbacks in Duluth's R-1 Residential-Traditional district, the city's standard single-family, duplex and townhouse zone. The front yard must be the smaller of 20 feet or the average setback of adjacent developed lots facing the same street, so an established block can pull the required setback in tighter than the flat 20-foot figure. Side yards run 6 feet for a typical one- or two-family lot, drop to 3 feet where the lot has 30 feet or less of frontage, and go to 0 feet along a shared wall on a two-family lot; all other principal structures on the lot get a 10-foot side yard except townhouse shared walls, which are also 0 feet.
Corner lots carry a 15-foot setback along the front-facing side yard for both principal and accessory structures. The rear yard minimum is 15 feet. 3 lets specific features intrude into a required yard, such as chimneys and flues up to 2 feet into a front or side setback, and open porches, decks or paved terraces up to 10 feet into the front yard (never closer than 5 feet to any property line). 2, and a one-family lot converting to two-family use must still meet minimum lot area and frontage even though it is exempt from the setback recalculation.
Violations & Fines
The building official enforces Chapter 50 and will not issue a construction, alteration or use permit for a project that would violate the setback standards. Where a structure is already built out of compliance, Section 50-39.2 lets the city issue a written compliance order giving the owner at least 14 days to correct the violation (shorter if it threatens public health or safety). Under Section 50-39.4, any property owner or other person violating Chapter 50 is guilty of a misdemeanor and may be fined under City Code Section 1-7 or Section 12-6; a penalty is waived if the violation is fixed within the time set in the enforcement notice.
Frequently Asked Questions
What is the minimum front yard setback in Duluth's R-1 zone?
How close can I build to my side property line in R-1?
Can anything encroach into a required Duluth setback?
What happens if my structure violates the setback rules?
Sources & Official References
Other rules in Duluth
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