2005 17th St
2005 17th St is a 12-story building in Greater Downtown Denver with 86% of its floor area within daylight reach of a facade. This screen estimates 144 homes and scores it 87 out of 100 for office-to-residential conversion suitability.
CO-1 · Screened 2026-09-19 · Strong candidate
Also addressed as 2025 17th St, 1707 Chestnut Pl, 1725 Chestnut Pl and 1735 Chestnut Pl: Denver’s address records place all 5 on this one footprint.
Where 2005 17th St is
Its block in Greater Downtown Denver, drawn from Denver's own building outlines and street centerlines.
- Already housing
- Not screened
- 2005 17th St
This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.
Across its 11 residential floors this building carries 21,733 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 2005 17th St, 2026-09-19.
| Suitability scoreStrong candidate | 87 / 100 |
|---|---|
| Storiesfrom 145 ft aerial-survey height ÷ 12 ft floor-to-floor | 12 |
| Height bandsfloor plate by floor range, from the city's roof outlines | Floors 1–4: 20,221 sq ft · Floors 5–11: 13,536 sq ft · Floor 12: 2,195 sq ft |
| Floor platetypical floor, from the city outlines | 13,536 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 86% |
| Deepest interior pointviability threshold is 80 ft | 45 ft |
| Windowless coretypical floor; the building-wide total is in the text above | 1,033 sq ft |
| Estimated homesat 750 sq ft average | 144 |
| Conversion cost$360/sq ft all-in on 157,607 sq ft | $56.7M |
| Gap before grantshortfall against completed value | $22.8M |
| Modeled RESIDE grantbelow the statutory cap | $8.6M |
| 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
39 ft of exterior wall for each home the screen estimates — enough for two- and three-bedroom homes across the plan.
The typical floor has 511 ft of exterior wall, and across 11 residential floors the building carries 5,563 ft of it in total, divided among the 144 homes this screen estimates.
Its plate is moderately compact at 0.65: a squarish plan, with enough perimeter for a conventional double-loaded corridor. How window line and plate shape are measured.
At the model’s 750 sq ft average, the plan works out at about 13.1 homes per floor. Its floors are not alike, though: the typical floor's deepest interior point is 45 ft from a facade, while its worst floor reaches 62 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 2005 17th St scores 87 out of 100
Daylight efficiency 92, Interior depth 87, Scale 96, Finance 59 — each out of 100, then weighted.
Score components for 2005 17th St. Points are the subscore times its weight.
| Component | Subscore | Weight | Points |
|---|---|---|---|
| Daylight efficiency86% of the floor area within 35 ft of a facade, scored from 40% up to 90% | 92 | 45% | 41.6 |
| Interior depthdeepest interior point 45 ft from a facade, scored from 80 ft down to 40 ft | 87 | 25% | 21.8 |
| Scale144 estimated homes, scored from 0 up to 150 | 96 | 15% | 14.4 |
| Financeremaining gap is 25% of conversion cost, scored from 60% down to 0% | 59 | 15% | 8.8 |
Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 59 out of 100: remaining gap is 25% of conversion cost, scored from 60% down to 0%.
What the conversion would cost
$360 per square foot all-in across 157,607 sq ft of converted floor, or $56.7M in total — about $394K for each of the 144 homes.
All-in cost per square foot for 2005 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 21,733 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 144 homes is $34.0M.
What would have to be true
A $22.8M gap before any grant, $14.1M after the modeled one. The smallest single change that would close it: average unit size 27% down.
The shortfall before any grant is $22.8M. Closing it from the value side means each of the 144 homes finishing at $394K rather than the $236K the model assumes — 67% more. Closing it from the cost side means getting all-in cost down from $360 to $216 per square foot.
A modeled RESIDE grant of $8.6M moves that threshold to $334K a home. That is still above the $236K assumed, leaving $14.1M uncovered, which is why the grant does not unlock this one.
Nor do all four levers have to move. For 2005 17th St, one alone would close the gap at:
Single-assumption flip points for 2005 17th St, each holding the other three at their defaults.
| Average unit sizethe binding constraint — the least this building would need | 27% downto 546 sq ft |
|---|---|
| Conversion cost per square foot | 34% downto $170/sq ft |
| Completed value per home | 42% upto $334K |
All four are sliders in the survey, where 2005 17th St re-scores against your own numbers.
How it compares in Greater Downtown Denver
2005 17th St ranks 42nd of the 214 buildings screened here, against a median score of 72.
Its floor plate is better lit than 61% of them, and shallower than 76% of them at its deepest interior point. On size it is the 139th 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 Union Station and the PUD zone
9th of 55 in Union Station, 7th of 21 zoned PUD — the comparison that shares its rules, rents and streets.
Denver places 55 of the screened buildings in Union Station. 2005 17th St ranks 9th of them against a median score of 69. 23 score 70 or more, their median deepest interior point is 61 ft from a facade against this building’s 45 ft, and together they would hold an estimated 13,167 homes. The group’s top scorer is 1600 17th St, at 95.
21 of the screened buildings are zoned PUD. 2005 17th St ranks 7th of them against a median score of 77. 12 score 70 or more, their median deepest interior point is 49 ft from a facade against this building’s 45 ft, and together they would hold an estimated 5,808 homes. The group’s top scorer is 300 E 17th Ave, at 96.
Its nearest match in size: 2000 Arapahoe St
The screened building closest to 2005 17th St in converted floor area is 2000 Arapahoe St: 155,461 sq ft over 13 stories, against 157,607 sq ft over 12 here.
2005 17th St scores 87 to its 74, and with the size held roughly equal most of that lead comes from interior depth: 87 out of 100 here, 44 there (deepest interior point 63 ft from a facade, scored from 80 ft down to 40 ft). On the money they sit in the same place: each falls short even with the modeled grant. The two stand about 3,600 ft apart.
Would it qualify for a RESIDE Act grant?
The model awards 2005 17th St $8.6M, 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 2005 17th St
The 4 closest the screen also covers, from 200 ft away. They are the colored outlines on the plan at the top of this page.
- 1777 Chestnut Pl23 stories · 90% daylit · 486 estimated homes · scores 91/100 (Strong candidate)about 200 ft away
- 2001 16th St22 stories · 71% daylit · 494 estimated homes · scores 58/100 (Worth a feasibility study)about 400 ft away
- 1900 17th St13 stories · 91% daylit · 253 estimated homes · scores 91/100 (Strong candidate)about 400 ft away
- 1989 16th St13 stories · 71% daylit · 254 estimated homes · scores 59/100 (Worth a feasibility study)about 530 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.