3355 Denargo St
3355 Denargo St is a 7-story building in Greater Downtown Denver with 90% of its floor area within daylight reach of a facade. This screen estimates 483 homes and scores it 90 out of 100 for office-to-residential conversion suitability.
CO-1 · Screened 2026-09-19 · Strong candidate
Also addressed as 3375 Denargo St: Denver’s address records place both on this one footprint.
Where 3355 Denargo St is
Its block in Greater Downtown Denver, drawn from Denver's own building outlines and street centerlines.
- Already housing
- Not screened
- 3355 Denargo St
This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.
Across its 6 residential floors this building carries 52,540 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 3355 Denargo St, 2026-09-19.
| Suitability scoreStrong candidate | 90 / 100 |
|---|---|
| Storiesfrom 81 ft aerial-survey height ÷ 12 ft floor-to-floor | 7 |
| Height bandsfloor plate by floor range, from the city's roof outlines | Floors 1–2: 108,285 sq ft · Floor 3: 85,724 sq ft · Floors 4–6: 85,219 sq ft · Floor 7: 55,867 sq ft |
| Floor platetypical floor, from the city outlines | 85,219 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 90% |
| Deepest interior pointviability threshold is 80 ft | 43 ft |
| Windowless coretypical floor; the building-wide total is in the text above | 2,380 sq ft |
| Estimated homesat 750 sq ft average | 483 |
| Conversion cost$360/sq ft all-in on 505,534 sq ft | $182.0M |
| Gap before grantshortfall against completed value | $68.0M |
| Modeled RESIDE grantat the statutory per-award cap | $10.0M |
| BuiltDenver does not publish a construction year with this data | — |
| ZoningFive Points | PUD-G |
| Opportunity Zonenot in a 2018 designated tract | No |
The plan: window line, shape and floor rhythm
33 ft of exterior wall for each home the screen estimates — enough for two- and three-bedroom homes across the plan.
The typical floor has 2,846 ft of exterior wall, and across 6 residential floors the building carries 15,794 ft of it in total, divided among the 483 homes this screen estimates.
Its plate is highly articulated at 0.13: 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 80.5 homes per floor. Its floors are not alike, though: the typical floor's deepest interior point is 43 ft from a facade, while its worst floor reaches 109 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 3355 Denargo St scores 90 out of 100
Daylight efficiency 99, Interior depth 93, Scale 100, Finance 47 — each out of 100, then weighted.
Score components for 3355 Denargo St. Points are the subscore times its weight.
| Component | Subscore | Weight | Points |
|---|---|---|---|
| Daylight efficiency90% of the floor area within 35 ft of a facade, scored from 40% up to 90% | 99 | 45% | 44.6 |
| Interior depthdeepest interior point 43 ft from a facade, scored from 80 ft down to 40 ft | 93 | 25% | 23.3 |
| Scale483 estimated homes, scored from 0 up to 150 | 100 | 15% | 15.0 |
| Financeremaining gap is 32% of conversion cost, scored from 60% down to 0% | 47 | 15% | 7.0 |
Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 47 out of 100: remaining gap is 32% of conversion cost, scored from 60% down to 0%.
What the conversion would cost
$360 per square foot all-in across 505,534 sq ft of converted floor, or $182.0M in total — about $377K for each of the 483 homes.
All-in cost per square foot for 3355 Denargo 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 52,540 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 483 homes is $114.0M.
What would have to be true
A $68.0M gap before any grant, $58.0M after the modeled one. The smallest single change that would close it: average unit size 34% down.
The shortfall before any grant is $68.0M. Closing it from the value side means each of the 483 homes finishing at $377K rather than the $236K the model assumes — 60% more. Closing it from the cost side means getting all-in cost down from $360 to $225 per square foot.
A modeled RESIDE grant of $10.0M moves that threshold to $356K a home. That is still above the $236K assumed, leaving $58.0M uncovered, which is why the grant does not unlock this one.
Nor do all four levers have to move. For 3355 Denargo St, one alone would close the gap at:
Single-assumption flip points for 3355 Denargo St, each holding the other three at their defaults.
| Average unit sizethe binding constraint — the least this building would need | 34% downto 497 sq ft |
|---|---|
| Conversion cost per square foot | 44% downto $145/sq ft |
| Completed value per home | 51% upto $356K |
All four are sliders in the survey, where 3355 Denargo St re-scores against your own numbers.
How it compares in Greater Downtown Denver
3355 Denargo St ranks 25th of the 214 buildings screened here, against a median score of 72.
Its floor plate is better lit than 72% of them, and shallower than 78% of them at its deepest interior point. On size it is the 43rd 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 Five Points
1st of 20 in Five Points — the comparison that shares its rules, rents and streets.
Denver places 20 of the screened buildings in Five Points. 3355 Denargo St ranks 1st of them against a median score of 68, the top score in the group. 9 score 70 or more, their median deepest interior point is 61 ft from a facade against this building’s 43 ft, and together they would hold an estimated 5,122 homes.
Its nearest match in size: 1801 Blake St
The screened building closest to 3355 Denargo St in converted floor area is 1801 Blake St: 484,517 sq ft over 8 stories, against 505,534 sq ft over 7 here.
3355 Denargo St scores 90 to its 56, and with the size held roughly equal most of that lead comes from daylight efficiency: 99 out of 100 here, 61 there (71% of the floor area within 35 ft of a facade, scored from 40% up to 90%). On the money they sit in the same place: each falls short even with the modeled grant. The two stand about 4,200 ft apart.
Would it qualify for a RESIDE Act grant?
The model awards 3355 Denargo 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 3355 Denargo St
The 4 closest the screen also covers, from 890 ft away. They are the colored outlines on the plan at the top of this page.
- 2797 Wewatta Way6 stories · 82% daylit · already an apartment buildingabout 890 ft away
- 2500 Wewatta Way9 stories · 84% daylit · already an apartment buildingabout 1,070 ft away
- 1809 28th St7 stories · 67% daylit · already an apartment buildingabout 1,120 ft away
- 2890 N Brighton Blvd6 stories · 90% daylit · already an apartment buildingabout 1,420 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.