1955 Arapahoe St

1955 Arapahoe St is a 13-story apartment building in Greater Downtown Denver. Its floor plate has 100% of its area within daylight reach of a facade and scores 97 out of 100 on this screen’s measures, which is part of why it works as housing.

CO-1 · Screened 2026-10-04 · Already housing

No address point in Denver’s records falls inside this footprint, so it is named by the closest one that no other screened building claims — usually a site entrance, but check the outline on the plan below before relying on the street number.

Where 1955 Arapahoe St is

Its block in Greater Downtown Denver, drawn from Denver's own building outlines and street centerlines.

Suitability score

0–29

30–49

50–69

70–100

Already housing
Not screened
1955 Arapahoe St

1955 Arapahoe St and the 1,000 ft of Greater Downtown Denver around it. The streets are drawn at the width of the right-of-way they run down, sidewalks included, and named, and every building on these blocks is drawn. What is left open and stippled is neither: a surface lot, a plaza or a vacant parcel. The screened buildings are colored by the ramp above, the same one the district map uses, carry their score, and each is a link to its own page. Each casts a shadow as long as its measured height lets it, so towers stand out from the low buildings around them; the unscreened buildings have no measured height and cast none. 1955 Arapahoe St is outlined in its own score color at the outline it covers at ground level. Dashed inside it is the typical floor, the one the floor-plate figure below draws, because this building steps back as it rises. Its windowless core is hatched. The inset places it among every building the screen covers.

Typical floor plan: 100% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 100%. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 48 sq ft per typical floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 36 ft from the nearest window. A–A is where the section beside it is cut.

Section A–A: cut across the depth of the plate, through the middle of the core. Daylight reaches 35 ft in from every facade, fading as it goes, and the hatched stripe left between the lit edges is floor that gets converted and can never be rented: 48 sq ft on the floor the screen scores, and 531 sq ft over 12 residential floors. The shaded ground floor is converted like the rest and counted as no homes.

This is already an apartment building: Denver's property records list 197 apartments here, on 96% of the floor area they record. It is on the map because the city's building outlines file it as commercial, but this site does not count it as a conversion candidate.

Across its 12 residential floors this building carries 531 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 1955 Arapahoe St, 2026-10-04.

Suitability scoreStrong candidate	97 / 100
Storiesfrom 155 ft aerial-survey height ÷ 12 ft floor-to-floor	13
Height bandsfloor plate by floor range, from the city's roof outlines	Floors 1–12: 13,315 sq ft · Floor 13: 418 sq ft
Floor platetypical floor, from the city outlines	13,315 sq ft
Daylight efficiencyshare within 35 ft of a facade	100%
Deepest interior pointviability threshold is 80 ft	36 ft
Windowless coretypical floor; the building-wide total is in the text above	48 sq ft
BuiltDenver does not publish a construction year with this data	—
ZoningCBD	D-C
Opportunity Zonenot in a 2018 designated tract	No

The plan: window line, shape and floor rhythm

44 ft of exterior wall for each home the screen estimates — enough for two- and three-bedroom homes across the plan.

The typical floor has 612 ft of exterior wall, and across 12 residential floors the building carries 6,815 ft of it in total, divided among the 156 homes this screen estimates.

Its plate is elongated at 0.45: a slab or an L, which is why so much of the floor lies within reach of a window: the outline buys daylight that a square plan of the same area would not. How window line and plate shape are measured.

At the model’s 750 sq ft average, the plan works out at about 13.0 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 1955 Arapahoe St scores 97 out of 100

Daylight efficiency 100, Interior depth 100, Scale 100, Finance 79 — each out of 100, then weighted.

Score components for 1955 Arapahoe St. Points are the subscore times its weight.

Component	Subscore	Weight	Points
Daylight efficiency100% of the floor area within 35 ft of a facade, scored from 40% up to 90%	100	45%	45.0
Interior depthdeepest interior point 36 ft from a facade, scored from 80 ft down to 40 ft	100	25%	25.0
Scale156 estimated homes, scored from 0 up to 150	100	15%	15.0
Financeremaining gap is 13% of conversion cost, scored from 60% down to 0%	79	15%	11.8

Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 79 out of 100: remaining gap is 13% of conversion cost, scored from 60% down to 0%.

Other buildings screened near 1955 Arapahoe St

The 4 closest the screen also covers, from 160 ft away. They are the colored outlines on the plan at the top of this page.

1956 Lawrence St
12 stories · 89% daylit · 160 estimated homes · scores 92/100 (Strong candidate)
about 160 ft away
2000 Arapahoe St
13 stories · 85% daylit · 140 estimated homes · scores 74/100 (Strong candidate)
about 320 ft away
1215 19th St
17 stories · 91% daylit · already an apartment building
about 440 ft away
2020 Lawrence St
12 stories · 85% daylit · 294 estimated homes · scores 85/100 (Strong candidate)
about 450 ft away

A screen, not a feasibility study, from outlines and heights rather than plans: the method and how to correct a figure. If you know this building’s interior, you know what this model cannot see.