1001 17th St

1001 17th St is a 27-story building in Greater Downtown Denver with 62% of its floor area within daylight reach of a facade. This screen estimates 609 homes and scores it 35 out of 100 for office-to-residential conversion suitability.

CO-1 · Screened 2026-09-19 · Marginal

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Where 1001 17th 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
1001 17th St

1001 17th 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. 1001 17th 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: 62% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 61%. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 13,059 sq ft per typical floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 92 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: 13,059 sq ft on the floor the screen scores, and 345,644 sq ft over 26 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 building does not pencil at default assumptions, even with a modeled RESIDE Act grant.

Across its 26 residential floors this building carries 345,644 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 1001 17th St, 2026-09-19.

Suitability scoreMarginal	35 / 100
Storiesfrom 329 ft aerial-survey height ÷ 12 ft floor-to-floor	27
Height bandsfloor plate by floor range, from the city's roof outlines	Floors 1–2: 71,794 sq ft · Floors 3–4: 47,888 sq ft · Floors 5–26: 33,657 sq ft · Floor 27: 8,989 sq ft
Floor platetypical floor, from the city outlines	33,657 sq ft
Daylight efficiencyshare within 35 ft of a facade	62%
Deepest interior pointviability threshold is 80 ft	92 ft
Windowless coretypical floor; the building-wide total is in the text above	13,059 sq ft
Estimated homesat 750 sq ft average	609
Conversion cost$360/sq ft all-in on 917,008 sq ft	$330.1M
Gap before grantshortfall against completed value	$186.4M
Modeled RESIDE grantat the statutory per-award cap	$10.0M
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

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

The typical floor has 708 ft of exterior wall, and across 26 residential floors the building carries 19,723 ft of it in total, divided among the 609 homes this screen estimates.

Its plate is compact at 0.84: close to a square or a circle, the most efficient envelope an office can have and the least generous one for apartments: little perimeter to divide among homes. How window line and plate shape are measured.

At the model’s 750 sq ft average, the plan works out at about 23.4 homes per floor. Its floors are not alike, though: the typical floor's deepest interior point is 92 ft from a facade, while its worst floor reaches 107 ft. The score follows the typical floor, so a podium that could not hold a bedroom does not by itself sink a slim tower above it — but it is there, and it is part of what would have to be drawn around.

Why 1001 17th St scores 35 out of 100

The weighted components add to 37, but the score is capped at 35 because its deepest interior point is 92 ft from a facade, past the 80 ft threshold beyond which conversion requires carving a light well.

Score components for 1001 17th St. Points are the subscore times its weight.

Component	Subscore	Weight	Points
Daylight efficiency62% of the floor area within 35 ft of a facade, scored from 40% up to 90%	45	45%	20.1
Interior depthdeepest interior point 92 ft from a facade, scored from 80 ft down to 40 ft	0	25%	0.0
Scale609 estimated homes, scored from 0 up to 150	100	15%	15.0
Financeremaining gap is 53% of conversion cost, scored from 60% down to 0%	11	15%	1.6

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 92 ft from a facade, scored from 80 ft down to 40 ft.

What the conversion would cost

$360 per square foot all-in across 917,008 sq ft of converted floor, or $330.1M in total — about $542K for each of the 609 homes.

All-in cost per square foot for 1001 17th St: base cost plus the code work a change of use triggers.

Base conversion cost	$260/sq ft
Plumbing risers to every unit	$40/sq ft
Operable windows and glazing	$30/sq ft
Additional egress stair	$18/sq ft
Fire sprinklers (NFPA 13R)	$12/sq ft
All-in	$360/sq ft

That cost is charged across every converted square foot, including the 345,644 sq ft of windowless core, which has to be gutted, re-plumbed and sprinklered like the rest of the building and then earns nothing. Against it the model sets a completed value of $236K a home, which for 609 homes is $143.7M.

What would have to be true

A $186.4M gap before any grant, $176.4M after the modeled one. The smallest single change that would close it: average unit size 55% down.

The shortfall before any grant is $186.4M. Closing it from the value side means each of the 609 homes finishing at $542K rather than the $236K the model assumes — 130% more. Closing it from the cost side means getting all-in cost down from $360 to $157 per square foot.

A modeled RESIDE grant of $10.0M moves that threshold to $526K a home. That is still above the $236K assumed, leaving $176.4M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 1001 17th St, one alone would close the gap at:

Single-assumption flip points for 1001 17th St, each holding the other three at their defaults.

Average unit sizethe binding constraint — the least this building would need	55% downto 337 sq ft
Conversion cost per square foot	74% downto $68/sq ft
Completed value per home	123% upto $526K

All four are sliders in the survey, where 1001 17th St re-scores against your own numbers.

How it compares in Greater Downtown Denver

1001 17th St ranks 203rd of the 214 buildings screened here, against a median score of 72.

Its floor plate is better lit than 4% of them, and shallower than 3% of them at its deepest interior point. On size it is the 26th largest by estimated homes. The full survey of all 214 buildings ranks and maps every one of them, and the list by address links each to its own page.

Within CBD and the D-C zone

70th of 75 in CBD, 71st of 72 zoned D-C — the comparison that shares its rules, rents and streets.

Denver places 75 of the screened buildings in CBD. 1001 17th St ranks 70th of them against a median score of 71. 40 score 70 or more, their median deepest interior point is 56 ft from a facade against this building’s 92 ft, and together they would hold an estimated 33,698 homes. The group’s top scorer is 918 17th St, at 97.

72 of the screened buildings are zoned D-C. 1001 17th St ranks 71st of them against a median score of 73. 39 score 70 or more, their median deepest interior point is 57 ft from a facade against this building’s 92 ft, and together they would hold an estimated 32,881 homes. The group’s top scorer is 721 19th St, at 95.

Its nearest match in size: 1800 Larimer St

The screened building closest to 1001 17th St in converted floor area is 1800 Larimer St: 790,829 sq ft over 29 stories, against 917,008 sq ft over 27 here.

1800 Larimer St scores 60 and 1001 17th St only 35, and the difference is a hard fail rather than a matter of degree: the lower one is capped at 35 because its deepest interior point is 92 ft from a facade, past the 80 ft threshold beyond which conversion requires carving a light well. On the money they sit in the same place: each falls short even with the modeled grant. The two stand about 900 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 1001 17th St $10.0M, on the assumption it qualifies. Whether it does, no published dataset can say.

That figure assumes the building meets the Act’s vacant-and-abandoned test, which turns on code-enforcement and receivership records no city publishes.

It does not sit in a 2018 designated Opportunity Zone, so it would not draw that Section 201 priority.

Other buildings screened near 1001 17th St

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.

999 17th St
28 stories · 83% daylit · already an apartment building
about 290 ft away
1099 18th St
36 stories · 78% daylit · 589 estimated homes · scores 66/100 (Worth a feasibility study)
about 330 ft away
909 17th St
14 stories · 88% daylit · 402 estimated homes · scores 76/100 (Strong candidate)
about 430 ft away
1001 16th St
27 stories · 70% daylit · 543 estimated homes · scores 56/100 (Worth a feasibility study)
about 480 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.