Building Setbacks & Zoning in Longmont, CO (2026)
2 verified building setbacks & zoning rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Setback Rules
Longmont's Land Development Code sets minimum yard setbacks by zoning district in the master dimensional table at Municipal Code Section 15.03.070, Table 15.03.020(14), which controls whenever a district-specific table conflicts. In the R-SF single-family district a dwelling needs a 15-foot front setback, cut to 10 feet with alley garage access, a 5-foot side yard, and a 20-foot rear yard, or 6 feet where the lot backs an alley.
Longmont Zoning District Setback Requirements
Some RestrictionsLongmont Municipal Code § 15.03.070, Table 15.03.020(14)
Sec. 15.03.070. - Summary tables of dimensional standards. In case of a discrepancy with the summary tables for any specific zoning district in this chapter, the master tables in this section govern.
Structure Height Limits
In Longmont's R-SF single-family district, Table 15.03.020(2) of the Land Development Code caps building height at 35 feet. Section 15.03.080.D measures that height from the average finished grade at the center of every wall to the top of the highest part of the building, and the same 35-foot cap applies lot by lot regardless of roof style.
Longmont Residential Building Height Limit
Some RestrictionsLongmont Municipal Code § 15.03.020, Table 15.03.020(2)
Table 15.03.020(2). R-SF District Dimensional Standards. Lot Standards (Minimum): Lot area 5,000 square feet; Lot area—alley garage access 4,000 square feet. A. Lot width 50 feet; Lot width—alley garage access 40 feet. Setbacks (Minimum): B. Front yard, dwelling 15 feet; Front yard, dwelling—alley garage access 10 feet. C. Front yard, front-facing garage 20 feet. D. Side yard, (no street fronta...
Looking for Boulder County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Longmont city rules.
Building Setbacks & Zoning in Boulder County →