Centennial, CO Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- NC 2A max coverage
- 20%
- NC 9 max coverage
- 30%
- NC 5 max coverage
- 42%
- SFD-Cottage max coverage
- 60%
- Governing section
- LDC § 12-3-205; Table 12-3-301A
Summary
Centennial caps building coverage ratio, building footprint divided by lot area, by zoning subdistrict under Table 12-3-301A, ranging from 20% in NC 2A up to 60% for Single Family Detached-Cottage lots.
A. Building Coverage. Building coverage is the total of indoor floor areas taken on a horizontal plane at the main grade level of the principal building and all accessory buildings. It does not include such appurtenances as open porches, terraces, decks, driveways, and steps. All dimensions are measured between the exterior faces of building walls. B. Building Coverage Ratio. Building coverage ratio is the percentage of the lot area that is covered by buildings.
Full Breakdown
LDC § 12-3-205(A) defines building coverage as the total indoor floor area at the main grade level of the principal building and all accessory buildings, excluding open porches, terraces, decks, driveways, and steps, measured between exterior wall faces. Subsection (B) defines building coverage ratio as the percentage of lot area covered by buildings. Table 12-3-301A sets that ratio by subdistrict: 20% in NC 2A, 25% in NC 12, 30% in NC 9, 37% in NC 6, 42% in NC 5, 45% in NI SFD/SFA, and up to 60% for Single Family Detached-Cottage lots.
Violations & Fines
Exceeding the maximum building coverage ratio for the lot's zoning subdistrict without approved alternative standards is a zoning violation; the City can withhold a building permit or require the plan be revised.
Frequently Asked Questions
What counts as "building coverage" in Centennial?
What is the maximum lot coverage allowed?
Sources & Official References
Other rules in Centennial
Compare Centennial to another location·View the Colorado building setbacks & zoning overview
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Lot Coverage Limits in Nearby Cities
How other cities in Arapahoe County handle lot coverage limits.