280 E 20th Ave

280 E 20th Ave is a 8-story building in Greater Downtown Denver with 98% of its floor area within daylight reach of a facade. This screen estimates 131 homes and scores it 95 out of 100 for office-to-residential conversion suitability.

CO-1 · Screened 2026-09-13 · Strong candidate

280 E 20th Ave — 98% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 100%. Other floors of the building do carry windowless core.

This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.

Across its 7 residential floors this building carries 2,706 sq ft of windowless core — area that must be gutted, re-plumbed and sprinklered but can never be rented as an apartment.

Modeled conversion metrics for 280 E 20th Ave, 2026-09-13.
Suitability scoreStrong candidate	95 / 100
Storiesfrom 93 ft aerial-survey height ÷ 12 ft floor-to-floor	8
Height bandsfloor plate by floor range, from the city's roof outlines	Floor 1: 21,321 sq ft · Floors 2–3: 20,705 sq ft · Floors 4–8: 16,845 sq ft
Floor platetypical floor, from the city outlines	16,845 sq ft
Daylight efficiencyshare within 35 ft of a facade	98%
Deepest interior pointviability threshold is 80 ft	34 ft
Windowless coretypical floor; the building-wide total is in the text above	0 sq ft
Estimated homesat 750 sq ft average	131
Conversion cost$360/sq ft all-in on 125,638 sq ft	$45.2M
Gap before grantshortfall against completed value	$14.3M
Modeled RESIDE grantbelow the statutory cap	$7.9M
ZoningNorth Capitol Hill	C-MX-12

These figures are a screen, not a feasibility study, and they come from public footprint and height data rather than from plans. See how this was computed and what it cannot tell you, or open this building in the interactive survey to change the assumptions behind it.