Hamilton Square
Office in Washington, DC, DC · 600 14th Street, NW · 20005
At a glance
Hamilton Square is a 343,755-square-foot office building at 600 14th Street, NW in Washington, DC, built in 1999. In its 2024 Washington, DC benchmarking disclosure it reported an ENERGY STAR score of 29 out of 100 (grade D), a site energy-use intensity of 83.7 kBtu/ft² and 2,360 tCO₂e of greenhouse-gas emissions. That score is higher than 6% of the 774 scored office buildings in Washington, DC.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 29 (band D) |
| Site EUI | 83.7 kBtu/ft² |
| Source EUI | 210.2 kBtu/ft² |
| GHG emissions | 2,360 tCO₂e |
| GHG intensity | 6.9 kgCO₂e/ft² |
| Electricity | 7,042,004 kWh |
| Natural gas | 47,288 therms |
| Water use | 12,338 kgal |
| Gross floor area | 343,755 sq ft |
| Source record | dc:PM1396921:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 29 | +1 | 83.7 kBtu/ft² | 2,360 tCO₂e |
| 2023 | 28 | -3 | 85.5 kBtu/ft² | 2,395 tCO₂e |
| 2022 | 31 | -8 | 83.0 kBtu/ft² | 2,350 tCO₂e |
| 2021 | 39 | -5 | 71.6 kBtu/ft² | 2,046 tCO₂e |
| 2020 | 44 | +12 | 65.4 kBtu/ft² | 1,837 tCO₂e |
| 2019 | 32 | -4 | 85.2 kBtu/ft² | 2,443 tCO₂e |
| 2018 | 36 | -39 | 91.4 kBtu/ft² | 2,697 tCO₂e |
| 2017 | 75 | -1 | 60.4 kBtu/ft² | 2,303 tCO₂e |
| 2016 | 76 | ±0 | 60.5 kBtu/ft² | 2,384 tCO₂e |
| 2015 | 76 | ±0 | 61.6 kBtu/ft² | 2,833 tCO₂e |
| 2014 | 76 | 61.4 kBtu/ft² | 2,868 tCO₂e |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
Ownership
FSP HAMILTON SQUARE LLC
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Location
- Address
- 600 14th Street, NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20005
- Coordinates
- 38.89761, -77.03292
Within ~1 km
Nearby benchmarked buildings
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- Hyatt Grand Washington DCscore 67
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- 1300 Buildingscore 95
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- NGS Headquartersscore 68
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See also: most efficient in Washington, DC · biggest emitters
How does Hamilton Square compare with other office buildings in Washington, DC?
The latest disclosures cover 899 office buildings in Washington, DC, out of 6,870 buildings citywide. Hamilton Square's ENERGY STAR score of 29 compares with an average of 70 across the 774 that report a score; it scores higher than 6% of them and lower than 94%. Its site EUI of 83.7 kBtu/ft² is about 51% above the average of 55.6 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.9 kgCO₂e/ft² is about 37% above the group average of 5.0 kgCO₂e/ft².
At 343,755 sq ft, it is about 59% above the average floor area of 216,135 sq ft for those buildings. It was built in 1999, 25 years later than the group's average year built (1974). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Hamilton Square's energy performance changed over time?
BuildingCensus holds 11 Washington, DC disclosures for Hamilton Square, covering report years 2014–2024. Its ENERGY STAR score went from 76 in 2014 to 29 in 2024 (-47 points); its best year on file was 2014, at 76. Site EUI moved from 61.4 kBtu/ft² (2014) to 83.7 kBtu/ft² (2024), an 36% increase. Reported emissions went from 2,868 tCO₂e to 2,360 tCO₂e over the same span (down 18%).
What does an ENERGY STAR score of 29 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 29 means the building performs better than about 29% of its national peers. BuildingCensus bands the score into report-card grades; 29 falls in band D — lowest band (1–54). It sits 46 points below 75, the threshold for ENERGY STAR certification. In Washington, DC, 47% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. Hamilton Square's 83.7 kBtu/ft² across 343,755 sq ft works out to about 28.8 billion Btu (8,432 MWh-equivalent) in 2024. Its source EUI of 210.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 7,042,004 kWh of electricity, 47,288 therms of natural gas and 12,338 thousand gallons of water for the year.
Which law requires Hamilton Square to report its energy use?
Hamilton Square reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record dc:PM1396921:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
More office buildings in Washington, DC
- One Independence Square· 340,355 sq ft · score 91 (A)
- ! Waterfront Municipal Center East· 340,000 sq ft · score 85 (A)
- 1828 L Street Associates· 339,039 sq ft · score 85 (A)
- 77 K Street· 338,922 sq ft · score 91 (A)
- One Constitution Square· 338,645 sq ft · score 96 (A)
- Patriots Plaza II - 2261 (Brightly)· 336,246 sq ft · score 86 (A)
- Office buildings in Washington, DC· 899 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
- Most efficient large buildings in Washington, DC
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is Hamilton Square's energy grade?
Hamilton Square scores 29 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Washington, DC disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Hamilton Square use?
Its 2024 site energy-use intensity was 83.7 kBtu/ft² (210.2 kBtu/ft² source) across 343,755 sq ft, including 7,042,004 kWh of electricity and 47,288 therms of natural gas.
What are Hamilton Square's carbon emissions?
Hamilton Square reported 2,360 tCO₂e of greenhouse-gas emissions (6.9 kgCO₂e/ft²) for 2024.
Where is Hamilton Square?
Hamilton Square is at 600 14th Street, NW, in Washington, DC 20005. Its coordinates are 38.89761, -77.03292 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Hamilton Square and when was it built?
Hamilton Square has 343,755 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1999 as its year built. It is classed as office.
Is Hamilton Square covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2024 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Clean and Affordable Energy Act / BEPS.
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About this data
Source: Building Energy Benchmarking (Clean and Affordable Energy Act / BEPS), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Hamilton Square, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/hamilton-square-7043eabc (data as of July 9, 2026).