1800 N Grant St

1800 N Grant St is a 10-story building in Greater Downtown Denver with 85% of its floor area within daylight reach of a facade. This screen estimates 121 homes and scores it 82 out of 100 for office-to-residential conversion suitability.

CO-1 · Screened 2026-09-19 · Strong candidate

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

Where 1800 N Grant 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
1800 N Grant St

1800 N Grant 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. 1800 N Grant 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: 85% of the building’s floor area sits within daylight reach of a facade; the drawing shows its typical floor, where the share is 85%. The shading is daylight, darkest at the windows and gone 35 ft in. The hatched area is windowless core: 2,546 sq ft per typical floor that must be renovated but can never be rented as an apartment. The dimension marks the deepest interior point, 47 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: 2,546 sq ft on the floor the screen scores, and 20,367 sq ft over 9 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 9 residential floors this building carries 20,367 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 1800 N Grant St, 2026-09-19.

Suitability scoreStrong candidate	82 / 100
Storiesfrom 123 ft aerial-survey height ÷ 12 ft floor-to-floor	10
Height bandsfloor plate by floor range, from the city's roof outlines	Floors 1–9: 16,682 sq ft · Floor 10: 629 sq ft
Floor platetypical floor, from the city outlines	16,682 sq ft
Daylight efficiencyshare within 35 ft of a facade	85%
Deepest interior pointviability threshold is 80 ft	47 ft
Windowless coretypical floor; the building-wide total is in the text above	2,546 sq ft
Estimated homesat 750 sq ft average	121
Conversion cost$360/sq ft all-in on 134,084 sq ft	$48.3M
Gap before grantshortfall against completed value	$19.7M
Modeled RESIDE grantbelow the statutory cap	$7.3M
BuiltDenver does not publish a construction year with this data	—
ZoningNorth Capitol Hill	C-MX-12
Opportunity Zonenot in a 2018 designated tract	No

The plan: window line, shape and floor rhythm

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

The typical floor has 544 ft of exterior wall, and across 9 residential floors the building carries 4,453 ft of it in total, divided among the 121 homes this screen estimates.

Its plate is moderately compact at 0.71: 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 13.4 homes per floor, repeated on every residential floor, since this building's outline does not change as it rises.

Why 1800 N Grant St scores 82 out of 100

Daylight efficiency 90, Interior depth 84, Scale 81, Finance 57 — each out of 100, then weighted.

Score components for 1800 N Grant St. Points are the subscore times its weight.

Component	Subscore	Weight	Points
Daylight efficiency85% of the floor area within 35 ft of a facade, scored from 40% up to 90%	90	45%	40.3
Interior depthdeepest interior point 47 ft from a facade, scored from 80 ft down to 40 ft	84	25%	20.9
Scale121 estimated homes, scored from 0 up to 150	81	15%	12.1
Financeremaining gap is 26% of conversion cost, scored from 60% down to 0%	57	15%	8.5

Most of what it earns comes from daylight efficiency, and what holds it back most is finance, at 57 out of 100: remaining gap is 26% of conversion cost, scored from 60% down to 0%.

What the conversion would cost

$360 per square foot all-in across 134,084 sq ft of converted floor, or $48.3M in total — about $399K for each of the 121 homes.

All-in cost per square foot for 1800 N Grant 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 20,367 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 121 homes is $28.6M.

What would have to be true

A $19.7M gap before any grant, $12.5M after the modeled one. The smallest single change that would close it: average unit size 26% down.

The shortfall before any grant is $19.7M. Closing it from the value side means each of the 121 homes finishing at $399K rather than the $236K the model assumes — 69% more. Closing it from the cost side means getting all-in cost down from $360 to $213 per square foot.

A modeled RESIDE grant of $7.3M moves that threshold to $339K a home. That is still above the $236K assumed, leaving $12.5M uncovered, which is why the grant does not unlock this one.

Nor do all four levers have to move. For 1800 N Grant St, one alone would close the gap at:

Single-assumption flip points for 1800 N Grant St, each holding the other three at their defaults.

Average unit sizethe binding constraint — the least this building would need	26% downto 555 sq ft
Conversion cost per square foot	36% downto $167/sq ft
Completed value per home	44% upto $339K

All four are sliders in the survey, where 1800 N Grant St re-scores against your own numbers.

How it compares in Greater Downtown Denver

1800 N Grant St ranks 69th of the 214 buildings screened here, against a median score of 72.

Its floor plate is better lit than 57% of them, and shallower than 74% of them at its deepest interior point. On size it is the 150th 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 North Capitol Hill and the C-MX-12 zone

24th of 41 in North Capitol Hill, 12th of 16 zoned C-MX-12 — the comparison that shares its rules, rents and streets.

Denver places 41 of the screened buildings in North Capitol Hill. 1800 N Grant St ranks 24th of them against a median score of 85. 32 score 70 or more, their median deepest interior point is 47 ft from a facade against this building’s 47 ft, and together they would hold an estimated 8,820 homes. The group’s top scorer is 1776 N Grant St, at 97.

16 of the screened buildings are zoned C-MX-12. 1800 N Grant St ranks 12th of them against a median score of 85. 13 score 70 or more, their median deepest interior point is 44 ft from a facade against this building’s 47 ft, and together they would hold an estimated 2,011 homes. The group’s top scorer is 1776 N Grant St, at 97.

Its nearest match in size: 1525 N Sherman St

The screened building closest to 1800 N Grant St in converted floor area is 1525 N Sherman St: 140,944 sq ft over 10 stories, against 134,084 sq ft over 10 here.

1800 N Grant St scores 82 to its 86, and with the size held roughly equal most of that shortfall comes from daylight efficiency: 90 out of 100 here, 93 there (87% 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 1,800 ft apart.

Would it qualify for a RESIDE Act grant?

The model awards 1800 N Grant St $7.3M, 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 1800 N Grant St

The 4 closest the screen also covers, from 240 ft away. They are the colored outlines on the plan at the top of this page.

1827 N Grant St
14 stories · 95% daylit · already a condominium building
about 240 ft away
1776 N Grant St
13 stories · 99% daylit · 151 estimated homes · scores 97/100 (Strong candidate)
about 310 ft away
400 E 19th Ave
6 stories · 100% daylit · 76 estimated homes · scores 89/100 (Strong candidate)
about 400 ft away
1770 N Sherman St
9 stories · 89% daylit · 82 estimated homes · scores 82/100 (Strong candidate)
about 410 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.