Denver, CO · zoning record

U-SU-B zoning in Denver

The dimensional standards that govern what you can build in the U-SU-B district — straight from Denver's ordinance, with every figure quoting its source. Check a specific address to see how these rules apply to a real lot.

Free · Every figure cited · Read from the current code (2026-09-07)

U-SU-B dimensional standards

These are the letter-of-the-law limits for the base U-SU-B district. Overlays (historic, neighborhood plan, and similar) can tighten them; a specific address check resolves the overlays that actually apply.

Minimum lot size

4,500 sf

Smallest conforming lot.

“Zone Lot Area (min) 3,000 sf 4,500 sf 5,500 sf 7,000 sf 10,000 sf 3,000 sf”§ 5.3.3.3.A · Denver code · read 2026-09-07

Permitted uses in U-SU-B

  • single-familyby-right

What the record can't settle

  • Front setback (Primary Street) is contextual — "Calculated per Sec. 13.1.5.9" (Denver Zoning Code § 5.3.3.3.A/B) — not a fixed district number; verify against neighboring properties
  • Side interior, side street, rear setbacks and building coverage in U-SU/U-TU are ZONE LOT WIDTH-driven (brackets ≤30′, >30–40′, >40–<75′, ≥75′), not district-driven — verify against your lot width
  • Max height is split by lot depth: 30 ft in the front 65% of zone lot depth, 17 ft in the rear 35% (bulk plane), with a permitted height increase up to 35 ft as zone lot width increases over 50 ft (§ 5.3.3.3.A)
  • Rear setback is 12 ft where a public or private alley abuts the rear zone lot line, 20 ft where no alley abuts — depends on parcel-alley geometry, not modeled here
  • An Accessory Dwelling Unit (ADU) is permitted with limitations (L-ZP) in every U-SU and U-TU district per § 5.4.4 (Accessory to Primary Residential Uses), with additional standards in § 11.7 and § 11.8.2

Sources

Every figure above is quoted verbatim from the current ordinance. We never substitute a typical-for-zone default: a field absent from the record shows nothing, not a guess.

Informational only — not a permit, appraisal, or professional engineering opinion. Verify with your local planning department before acting on it. See Terms and data sources.

Other Denver districts on record

U-SU-AU-SU-CU-TU-BU-TU-C

Check a real Denver lot against U-SU-B

See how these standards resolve on a specific parcel — with the overlays that actually apply, in about 20 seconds.

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