1801 Chestnut Pl

1801 Chestnut Pl is a 6-story apartment building in Greater Downtown Denver. Its floor plate has 83% of its area within daylight reach of a facade and scores 35 out of 100 on this screen’s measures, which is part of why it works as housing.

CO-1 · Screened 2026-09-19 · Already housing

Where 1801 Chestnut Pl 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
1801 Chestnut Pl

1801 Chestnut Pl 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. 1801 Chestnut Pl 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: 83% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 80%. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 18,233 sq ft per typical floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 82 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: 18,233 sq ft on the floor the screen scores, and 73,237 sq ft over 5 residential floors. The steps are where the building sets back as it rises. 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 281 apartments here. 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 5 residential floors this building carries 73,237 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 1801 Chestnut Pl, 2026-09-19.

Suitability scoreMarginal	35 / 100
Storiesfrom 72 ft aerial-survey height ÷ 12 ft floor-to-floor	6
Height bandsfloor plate by floor range, from the city's roof outlines	Floors 1–3: 90,699 sq ft · Floor 4: 89,461 sq ft · Floor 5: 85,986 sq ft · Floor 6: 62,467 sq ft
Floor platetypical floor, from the city outlines	90,699 sq ft
Daylight efficiencyshare within 35 ft of a facade	83%
Deepest interior pointviability threshold is 80 ft	82 ft
Windowless coretypical floor; the building-wide total is in the text above	18,233 sq ft
BuiltDenver does not publish a construction year with this data	—
ZoningUnion Station	PUD
Opportunity Zonenot in a 2018 designated tract	No

The plan: window line, shape and floor rhythm

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

The typical floor has 2,561 ft of exterior wall, and across 5 residential floors the building carries 12,642 ft of it in total, divided among the 369 homes this screen estimates.

Its plate is highly articulated at 0.17: a long, notched or wing-shaped outline with far more facade than its area needs — wasteful as an office envelope, and close to ideal for apartments. How window line and plate shape are measured.

At the model’s 750 sq ft average, the plan works out at about 73.8 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 1801 Chestnut Pl scores 35 out of 100

The weighted components add to 59, but the score is capped at 35 because its deepest interior point is 82 ft from a facade, past the 80 ft threshold beyond which conversion requires carving a light well.

Score components for 1801 Chestnut Pl. Points are the subscore times its weight.

Component	Subscore	Weight	Points
Daylight efficiency83% of the floor area within 35 ft of a facade, scored from 40% up to 90%	85	45%	38.3
Interior depthdeepest interior point 82 ft from a facade, scored from 80 ft down to 40 ft	0	25%	0.0
Scale369 estimated homes, scored from 0 up to 150	100	15%	15.0
Financeremaining gap is 36% of conversion cost, scored from 60% down to 0%	41	15%	6.1

Most of what it earns comes from daylight efficiency, and what holds it back most is interior depth, at 0 out of 100: deepest interior point 82 ft from a facade, scored from 80 ft down to 40 ft.

Other buildings screened near 1801 Chestnut Pl

The 4 closest the screen also covers, from 290 ft away. They are the colored outlines on the plan at the top of this page.

1850 Chestnut Pl
6 stories · 95% daylit · already an apartment building
about 290 ft away
1777 Chestnut Pl
23 stories · 90% daylit · 486 estimated homes · scores 91/100 (Strong candidate)
about 360 ft away
1801 Wewatta St
13 stories · 86% daylit · 287 estimated homes · scores 87/100 (Strong candidate)
about 460 ft away
2005 17th St
12 stories · 86% daylit · 144 estimated homes · scores 87/100 (Strong candidate)
about 570 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.