2017 Welton St

2017 Welton St is a 8-story building in Greater Downtown Denver with 74% of its floor area within daylight reach of a facade. This screen estimates 117 homes and scores it 64 out of 100 for office-to-residential conversion suitability.

CO-1 · Screened 2026-09-19 · Worth a feasibility study

Build a conversion planCheck its numbers, lay out its homes and get a two-page PDF. Free.

Also addressed as 2025 Welton St and 2099 Welton St: Denver’s address records place all 3 on this one footprint.

Where 2017 Welton 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
2017 Welton St

2017 Welton 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. 2017 Welton 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: 74% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 76%. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 5,517 sq ft per typical floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 57 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: 5,517 sq ft on the floor the screen scores, and 37,955 sq ft over 7 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 7 residential floors this building carries 37,955 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 2017 Welton St, 2026-09-19.

Suitability scoreWorth a feasibility study	64 / 100
Storiesfrom 99 ft aerial-survey height ÷ 12 ft floor-to-floor	8
Height bandsfloor plate by floor range, from the city's roof outlines	Floors 1–2: 35,135 sq ft · Floors 3–6: 22,587 sq ft · Floor 7: 22,444 sq ft · Floor 8: 443 sq ft
Floor platetypical floor, from the city outlines	22,587 sq ft
Daylight efficiencyshare within 35 ft of a facade	74%
Deepest interior pointviability threshold is 80 ft	57 ft
Windowless coretypical floor; the building-wide total is in the text above	5,517 sq ft
Estimated homesat 750 sq ft average	117
Conversion cost$360/sq ft all-in on 148,370 sq ft	$53.4M
Gap before grantshortfall against completed value	$25.8M
Modeled RESIDE grantbelow the statutory cap	$7.0M
BuiltDenver does not publish a construction year with this data	—
ZoningFive Points	D-AS-20+
Opportunity Zonenot in a 2018 designated tract	No

The plan: window line, shape and floor rhythm

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

The typical floor has 641 ft of exterior wall, and across 7 residential floors the building carries 4,141 ft of it in total, divided among the 117 homes this screen estimates.

Its plate is moderately compact at 0.69: 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 16.7 homes per floor. Its floors are not alike, though: the typical floor's deepest interior point is 57 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 2017 Welton St scores 64 out of 100

Daylight efficiency 69, Interior depth 59, Scale 78, Finance 41 — each out of 100, then weighted.

Score components for 2017 Welton St. Points are the subscore times its weight.

Component	Subscore	Weight	Points
Daylight efficiency74% of the floor area within 35 ft of a facade, scored from 40% up to 90%	69	45%	31.0
Interior depthdeepest interior point 57 ft from a facade, scored from 80 ft down to 40 ft	59	25%	14.7
Scale117 estimated homes, scored from 0 up to 150	78	15%	11.7
Financeremaining gap is 35% of conversion cost, scored from 60% down to 0%	41	15%	6.2

Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 41 out of 100: remaining gap is 35% of conversion cost, scored from 60% down to 0%.

What the conversion would cost

$360 per square foot all-in across 148,370 sq ft of converted floor, or $53.4M in total — about $457K for each of the 117 homes.

All-in cost per square foot for 2017 Welton 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 37,955 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 117 homes is $27.6M.

What would have to be true

A $25.8M gap before any grant, $18.8M after the modeled one. The smallest single change that would close it: average unit size 36% down.

The shortfall before any grant is $25.8M. Closing it from the value side means each of the 117 homes finishing at $457K rather than the $236K the model assumes — 93% more. Closing it from the cost side means getting all-in cost down from $360 to $186 per square foot.

A modeled RESIDE grant of $7.0M moves that threshold to $397K a home. That is still above the $236K assumed, leaving $18.8M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 2017 Welton St, one alone would close the gap at:

Single-assumption flip points for 2017 Welton St, each holding the other three at their defaults.

Average unit sizethe binding constraint — the least this building would need	36% downto 480 sq ft
Conversion cost per square foot	49% downto $133/sq ft
Completed value per home	68% upto $397K

All four are sliders in the survey, where 2017 Welton St re-scores against your own numbers.

How it compares in Greater Downtown Denver

2017 Welton St ranks 153rd of the 214 buildings screened here, against a median score of 72.

Its floor plate is better lit than 26% of them, and shallower than 51% of them at its deepest interior point. On size it is the 151st 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

14th of 20 in Five Points — the comparison that shares its rules, rents and streets.

Denver places 20 of the screened buildings in Five Points. 2017 Welton St ranks 14th of them against a median score of 68. 9 score 70 or more, their median deepest interior point is 61 ft from a facade against this building’s 57 ft, and together they would hold an estimated 5,122 homes. The group’s top scorer is 3355 Denargo St, at 90.

Its nearest match in size: 1521 15th St

The screened building closest to 2017 Welton St in converted floor area is 1521 15th St: 152,060 sq ft over 9 stories, against 148,370 sq ft over 8 here.

2017 Welton St scores 64 to its 70, and with the size held roughly equal most of that shortfall comes from daylight efficiency: 69 out of 100 here, 83 there (82% 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 4,100 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 2017 Welton St $7.0M, 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 2017 Welton St

The 4 closest the screen also covers, from 150 ft away. They are the colored outlines on the plan at the top of this page.

2014 California St
12 stories · 87% daylit · already an apartment building
about 150 ft away
2001 N Lincoln St
32 stories · 84% daylit · 487 estimated homes · scores 82/100 (Strong candidate)
about 470 ft away
560 22nd St
16 stories · 88% daylit · already an apartment building
about 470 ft away
2175 California St
10 stories · 86% daylit · already an apartment building
about 610 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.