1100 S Flower
Office in California, CA · 1100 Flower Street, Los Angeles · 90015
At a glance
1100 S Flower is a 60,000-square-foot office building at 1100 Flower Street, Los Angeles in Los Angeles, California, built in 1999. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 26 out of 100 (grade D), a site energy-use intensity of 98.6 kBtu/ft² and 370 tCO₂e of greenhouse-gas emissions. That score is higher than 8% of the 4,912 scored office buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 26 (band D) |
| Site EUI | 98.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 370 tCO₂e |
| GHG intensity | 6.2 kgCO₂e/ft² |
| Electricity | 939,481 kWh |
| Gross floor area | 60,000 sq ft |
| Source record | california:6165673:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 26 | +4 | 98.6 kBtu/ft² | 370 tCO₂e |
| 2023 | 22 | -10 | 111.5 kBtu/ft² | 424 tCO₂e |
| 2022 | 32 | -5 | 86.2 kBtu/ft² | 331 tCO₂e |
| 2020 | 37 | +16 | 72.6 kBtu/ft² | 279 tCO₂e |
| 2019 | 21 | -8 | 95.6 kBtu/ft² | 336 tCO₂e |
| 2018 | 29 | 68.8 kBtu/ft² | 291 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 1100 Flower Street, Los Angeles
- City
- California
- State
- California
- ZIP
- 90015
- Coordinates
- 34.04250, -118.26390
Within ~1 km
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See also: most efficient in California · biggest emitters
How does 1100 S Flower compare with other office buildings in California?
The latest disclosures cover 6,214 office buildings in California, out of 40,029 buildings citywide. 1100 S Flower's ENERGY STAR score of 26 compares with an average of 75 across the 4,912 that report a score; it scores higher than 8% of them and lower than 92%. Its site EUI of 98.6 kBtu/ft² is about 75% above the average of 56.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.2 kgCO₂e/ft² is about 71% above the group average of 3.6 kgCO₂e/ft².
At 60,000 sq ft, it is about 61% below the average floor area of 151,937 sq ft for those buildings. It was built in 1999, 14 years later than the group's average year built (1985). 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 1100 S Flower's energy performance changed over time?
BuildingCensus holds 6 California disclosures for 1100 S Flower, covering report years 2018, 2019, 2020, 2022, 2023, 2024. Its ENERGY STAR score went from 29 in 2018 to 26 in 2024 (-3 points); its best year on file was 2020, at 37. Site EUI moved from 68.8 kBtu/ft² (2018) to 98.6 kBtu/ft² (2024), an 43% increase. Reported emissions went from 291 tCO₂e to 370 tCO₂e over the same span (up 27%).
What does an ENERGY STAR score of 26 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 26 means the building performs better than about 26% of its national peers. BuildingCensus bands the score into report-card grades; 26 falls in band D — lowest band (1–54). It sits 49 points below 75, the threshold for ENERGY STAR certification. In California, 65% 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. 1100 S Flower's 98.6 kBtu/ft² across 60,000 sq ft works out to about 5.9 billion Btu (1,734 MWh-equivalent) in 2024. The disclosure also reports 939,481 kWh of electricity for the year.
Which law requires 1100 S Flower to report its energy use?
1100 S Flower reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:6165673:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.
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- Office buildings in California· 6,214 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
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- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is 1100 S Flower's energy grade?
1100 S Flower scores 26 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1100 S Flower use?
Its 2024 site energy-use intensity was 98.6 kBtu/ft² across 60,000 sq ft, including 939,481 kWh of electricity.
What are 1100 S Flower's carbon emissions?
1100 S Flower reported 370 tCO₂e of greenhouse-gas emissions (6.2 kgCO₂e/ft²) for 2024.
Where is 1100 S Flower?
1100 S Flower is at 1100 Flower Street, Los Angeles, in Los Angeles, California 90015. Its coordinates are 34.04250, -118.26390 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 1100 S Flower and when was it built?
1100 S Flower has 60,000 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 1100 S Flower covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
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About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “1100 S Flower, Los Angeles, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/1100-s-flower-c9a3807f (data as of July 9, 2026).