Old Post Office
🚩

433 West Harrison Street, Chicago IL, 60607 Find on Google Maps

Chicago Building ID: 103689

Attribution: © Google 2025

Building Info

Square Footage: 2,493,160 sqft
#11 Largest
#6 Largest of Offices
20x median
124,364 sqft
11x median Office
231,240 sqft
Built: 2018
Primary Property Type: Office
Community Area: Near West Side
Ward: 28
Chicago Energy Rating: 4.0 / 4
Energy Star Score: 88 / 100
Owner

2023 Report Card

Overall Grade

Emissions Intensity - 50%

Energy Mix - 40%

Consistent Reporting - 10%

Learn About Our Grading

Emissions & Energy Information for 2023

Greenhouse Gas Intensity C: 6 kg CO₂e / sqft
Lower than 53% of all buildings
1.0x median
6.2 kg CO₂e / sqft
0.9x median Office
6.6 kg CO₂e / sqft
Total Greenhouse Gas Emissions: 15,035 tons CO₂e
#30 Highest in Chicago* 🚩
#9 Highest of Offices 🚨
18x median
841.4 tons CO₂e
9x median Office
1,647.9 tons CO₂e

Years Reported 3/6
A

2018
2019
2020
2021
2022
2023

Energy Breakdown for Old Post Office

Fossil Gas Use (aka Natural Gas): 50,678,741 kBtu
Est. Gas Bill: $604,000 for 2023**
#8 Highest of Offices 🚨
Higher than 98% of all buildings
9x median
5,517,828 kBtu
10x median Office
4,958,713.7 kBtu
Electricity Use: 65,672,160 kBtu
Est. Electric Bill: $2,752,000 for 2023**
#46 Highest in Chicago* 🚩
18x median
3,580,332.6 kBtu
7x median Office
9,303,318.1 kBtu
District Chilled Water Use: 59,866,738 kBtu
8x median
7,765,434.2 kBtu

Energy Mix A

Total Energy Use: 176,217,640 kBTU

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https://electrifychicago.net/building/old-post-office/

View Extra Technical & Historic Info

Source Energy Usage Intensity: Not Reported
This data was not reported for this building this year, which likely means a value of zero for this field.
Site Energy Usage Intensity: Not Reported
This data was not reported for this building this year, which likely means a value of zero for this field.

Full Historical Data Table for Old Post Office

Year	Overall Grade	Emissions Intensity Sub-Grade	Energy Mix Sub-Grade	Reporting Mix Sub-Grade	GHG Intensity kg CO₂e / sqft	GHG Emissions metric tons CO₂e	Energy Mix	Electricity Use kBTU	Fossil Gas Use kBTU	District Chilled Water Use kBTU	Source EUI kBTU / sqft	Floor Area sqft	Chicago Energy Rating	Energy Star Score
2018						-		-	-	-		3,899,026	-	-
2019						-		-	-	-		-	-	-
2020						-		-	-	-		3,899,026	-	-
2021	A	B	A	A	4.9	12,037	29%Electricity 34%Fossil Gas 37%Other	43,990,780	52,410,701	56,373,814	93.2	2,462,640	4.0	82.0
2022	B	C	A	A	5.9	14,702	34%Electricity 34%Fossil Gas 33%Other	62,343,954	62,459,533	60,217,575	118.3	2,493,160	3.0	69.0
2023	B	C	A	A	6	15,035	37%Electricity 29%Fossil Gas 34%Other	65,672,161	50,678,741	59,866,739	116.9	2,493,160	4.0	88.0

* Note on Rankings: Rankings and medians are among included buildings, which are those who reported under the Chicago Energy Benchmarking Ordinance for the year 2023, which only applies to buildings over 50,000 square feet.

** Note on Bill Estimates: Estimates for gas and electric bills are based on average electric and gas retail prices for Chicago in 2021 and are rounded. We expect large buildings would negotiate lower rates with utilities, but these estimates serve as an upper bound of cost and help understand the volume of energy a building is used by comparing it to your own energy bills! See our Chicago Gas & Electric Costs Source for the original statistics.

Data Source: Chicago Energy Benchmarking Data

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Old Post Office 🚩