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Littleton, CO Building Setbacks & Zoning: Lot Coverage Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Max building coverage (DNR/DTA)
65% of lot area
Min open space/tree canopy
35% of lot area
Applies to
Single-family detached homes, Downtown districts only
Governing table
Table 10-2-3.2.2, Unified Land Use Code
Companion height cap
2.5 stories / 30 feet, same table
Max penalty
$2,650 fine or 364 days jail, Code Sec. 1-4-1

Summary

Littleton caps building coverage for single-family detached homes in its Downtown zoning districts. In the Downtown Neighborhood Residential (DNR) and Downtown Transition Area (DTA) districts, a single-family detached dwelling cannot cover more than 65 percent of its lot under Table 10-2-3.2.2 of the Unified Land Use Code, paired with a 35 percent open-space floor.

Symbol Standard DNR DTA DMS DMU ... F Building Coverage (max. %) 65% 65% N/A N/A

View official code

Full Breakdown

2 of Littleton's Unified Land Use Code, the DT Standards of Design chapter governing building types in the city's four downtown districts: Downtown Neighborhood Residential (DNR), Downtown Transition Area (DTA), Downtown Main Street (DMS) and Downtown Mixed-Use (DMU). 2, Single-Family Detached Building Type Standards, sets building coverage, the footprint of all structures as a share of lot area, at a maximum of 65 percent in both DNR and DTA. Single-family detached is not a permitted building type in DMS or DMU, so the standard is listed as not applicable there.

The same table requires public or private open space and tree canopy coverage of at least 35 percent, so the coverage cap and the open-space floor work together to leave no unaccounted ground area on a compliant lot. B. Companion figures in the same table cap building height at two and one half stories or 30 feet, set the build-to zone at 20 to 30 feet from the street in DNR and 10 to 20 feet in DTA, and require a 5-foot interior side setback and a 20-foot rear setback (15 feet in DTA).

This cap applies only within the mapped Downtown districts; a single-family lot elsewhere in the City of Littleton, or a parcel that carries only a Littleton mailing address while sitting in unincorporated Arapahoe, Jefferson or Douglas County, falls under a different city standard or a county code entirely.

Violations & Fines

Littleton enforces the Unified Land Use Code through its general municipal penalty, Code Section 1-4-1: building or expanding beyond the 65 percent coverage cap without an approved site plan is punishable by a fine of up to $2,650, up to 364 days in jail, or up to a year of probation, and every day the violation continues counts as a separate offense. The penalty applies to every section of the code the same as if written into it, per Section 1-4-4.

Frequently Asked Questions

Does Littleton's 65 percent lot coverage cap apply citywide?
No. The 65 percent maximum building coverage in Table 10-2-3.2.2 applies only to single-family detached homes in the Downtown Neighborhood Residential (DNR) and Downtown Transition Area (DTA) districts under Section 10-2-3.2 of the Unified Land Use Code. It is not applicable in the Downtown Main Street or Downtown Mixed-Use districts, where single-family detached is not a permitted building type there.
What counts toward the building coverage limit?
Building coverage in Table 10-2-3.2.2 measures the footprint of all structures on the lot. Littleton pairs the 65 percent maximum with a 35 percent minimum for public or private open space and tree canopy coverage, so the two figures work together to keep at least a third of a compliant lot free of structures and paving.
What happens if a Littleton home exceeds the coverage cap?
Because the Unified Land Use Code carries no coverage-specific penalty clause, the City applies its general penalty in Code Section 1-4-1: a fine of up to $2,650, up to 364 days in jail, or up to a year of probation, with each day the violation continues treated as a separate offense under Section 1-4-4.
Does this limit apply to a Littleton-address home outside city limits?
No. Littleton lies across Arapahoe, Jefferson and Douglas Counties, and many addresses that read Littleton sit in unincorporated county land, including areas near Highlands Ranch, Columbine and Ken Caryl. Those parcels are governed by their county's zoning code, not by Littleton's Unified Land Use Code or Table 10-2-3.2.2.

Sources & Official References

Other rules in Littleton

Fence Regulations: Height LimitsSome RestrictionsSetback RulesSome RestrictionsStructure Height LimitsSome RestrictionsParking Rules: EV ChargingSome RestrictionsParking Rules: Loading ZonesSome RestrictionsParking Rules: Driveway RulesSome RestrictionsFence Regulations: Material RestrictionsSome RestrictionsFence Regulations: Fence Permit RequirementsSome Restrictions

All Littleton rules

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