1415 Market St
1415 Market St is a 8-story building in Greater Downtown Denver with 86% of its floor area within daylight reach of a facade. This screen estimates 104 homes and scores it 72 out of 100 for office-to-residential conversion suitability.
CO-1 · Screened 2026-09-19 · Strong candidate
Also addressed as 1425 Market St, 1429 Market St, 1435 Market St, 1437 Market St, 1439 Market St and 1445 Market St: Denver’s address records place all 7 on this one footprint.
Where 1415 Market St is
Its block in Greater Downtown Denver, drawn from Denver's own building outlines and street centerlines.
- Already housing
- Not screened
- 1415 Market St
This building does not pencil at default assumptions, even with a modeled RESIDE Act grant.
Across its 7 residential floors this building carries 15,526 sq ft of windowless core — area that must be gutted, re-plumbed and sprinklered but can never be rented as an apartment.
Part of this building is already homes. Denver's property records list 1 apartment here, alongside 1 non-residential record. The figures here treat the whole building as convertible, so read them as an upper bound and check which floors are already housing.
Modeled conversion metrics for 1415 Market St, 2026-09-19.
| Suitability scoreStrong candidate | 72 / 100 |
|---|---|
| Storiesfrom 90 ft aerial-survey height ÷ 12 ft floor-to-floor | 8 |
| Height bandsfloor plate by floor range, from the city's roof outlines | Floor 1: 38,796 sq ft · Floor 2: 36,336 sq ft · Floor 3: 27,780 sq ft · Floors 4–6: 15,680 sq ft · Floors 7–8: 1,167 sq ft |
| Floor platetypical floor, from the city outlines | 15,680 sq ft |
| Daylight efficiencyshare within 35 ft of a facade | 86% |
| Deepest interior pointviability threshold is 80 ft | 62 ft |
| Windowless coretypical floor; the building-wide total is in the text above | 3,039 sq ft |
| Estimated homesat 750 sq ft average | 104 |
| Conversion cost$360/sq ft all-in on 113,489 sq ft | $40.9M |
| Gap before grantshortfall against completed value | $16.3M |
| Modeled RESIDE grantbelow the statutory cap | $6.2M |
| BuiltDenver does not publish a construction year with this data | — |
| ZoningUnion Station | D-LD |
| 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 502 ft of exterior wall, and across 7 residential floors the building carries 4,567 ft of it in total, divided among the 104 homes this screen estimates.
Its plate is compact at 0.78: 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 14.9 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.
Why 1415 Market St scores 72 out of 100
Daylight efficiency 93, Interior depth 45, Scale 69, Finance 59 — each out of 100, then weighted.
Score components for 1415 Market 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% | 93 | 45% | 41.7 |
| Interior depthdeepest interior point 62 ft from a facade, scored from 80 ft down to 40 ft | 45 | 25% | 11.2 |
| Scale104 estimated homes, scored from 0 up to 150 | 69 | 15% | 10.4 |
| 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 interior depth, at 45 out of 100: deepest interior point 62 ft from a facade, scored from 80 ft down to 40 ft.
What the conversion would cost
$360 per square foot all-in across 113,489 sq ft of converted floor, or $40.9M in total — about $393K for each of the 104 homes.
All-in cost per square foot for 1415 Market 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 15,526 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 104 homes is $24.5M.
What would have to be true
A $16.3M gap before any grant, $10.1M after the modeled one. The smallest single change that would close it: average unit size 25% down.
The shortfall before any grant is $16.3M. Closing it from the value side means each of the 104 homes finishing at $393K rather than the $236K the model assumes — 66% 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 $6.2M moves that threshold to $333K a home. That is still above the $236K assumed, leaving $10.1M uncovered, which is why the grant does not unlock this one.
Nor do all four levers have to move. For 1415 Market St, one alone would close the gap at:
Single-assumption flip points for 1415 Market St, each holding the other three at their defaults.
| Average unit sizethe binding constraint — the least this building would need | 25% downto 564 sq ft |
|---|---|
| Conversion cost per square foot | 34% downto $171/sq ft |
| Completed value per home | 41% upto $333K |
All four are sliders in the survey, where 1415 Market St re-scores against your own numbers.
How it compares in Greater Downtown Denver
1415 Market St ranks 107th of the 214 buildings screened here, against a median score of 72.
Its floor plate is better lit than 62% of them, and shallower than 27% of them at its deepest interior point. On size it is the 157th 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 D-LD zone
22nd of 55 in Union Station, 9th of 29 zoned D-LD — the comparison that shares its rules, rents and streets.
Denver places 55 of the screened buildings in Union Station. 1415 Market St ranks 22nd 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 62 ft, and together they would hold an estimated 13,167 homes. The group’s top scorer is 1600 17th St, at 95.
29 of the screened buildings are zoned D-LD. 1415 Market St ranks 9th of them against a median score of 68. 10 score 70 or more, their median deepest interior point is 61 ft from a facade against this building’s 62 ft, and together they would hold an estimated 5,069 homes. The group’s top scorer is 1600 17th St, at 95.
Its nearest match in size: 930 16th St
The screened building closest to 1415 Market St in converted floor area is 930 16th St: 115,717 sq ft over 8 stories, against 113,489 sq ft over 8 here.
1415 Market St scores 72 to its 61, and with the size held roughly equal most of that lead comes from daylight efficiency: 93 out of 100 here, 75 there (78% 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 1,700 ft apart.
Would it qualify for a RESIDE Act grant?
The model awards 1415 Market St $6.2M, 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 1415 Market St
The 4 closest the screen also covers, from 350 ft away. They are the colored outlines on the plan at the top of this page.
- 1401 Blake St11 stories · 82% daylit · already a condominium buildingabout 350 ft away
- 1317 14th St5 stories · 83% daylit · 114 estimated homes · scores 69/100 (Worth a feasibility study)about 350 ft away
- 1500 15th St5 stories · 82% daylit · 80 estimated homes · scores 65/100 (Worth a feasibility study)about 490 ft away
- 1321 15th St12 stories · 76% daylit · 216 estimated homes · scores 72/100 (Strong candidate)about 490 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.