St. Mary'S Tower
Multifamily Housing in California, CA · 1120 Atlantic Avenue, Long Beach · 90813
At a glance
St. Mary'S Tower is a 79,050-square-foot multifamily housing building at 1120 Atlantic Avenue, Long Beach in Long Beach, California, built in 1985. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 47.3 kBtu/ft² and 225 tCO₂e of greenhouse-gas emissions. That score is higher than 37% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 84 (band B) |
| Site EUI | 47.3 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 225 tCO₂e |
| GHG intensity | 2.8 kgCO₂e/ft² |
| Electricity | 556,752 kWh |
| Natural gas | 18,544 therms |
| Gross floor area | 79,050 sq ft |
| Source record | california:6136540:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 84 | +5 | 47.3 kBtu/ft² | 225 tCO₂e |
| 2023 | 79 | -11 | 50.0 kBtu/ft² | 245 tCO₂e |
| 2022 | 90 | +11 | 44.2 kBtu/ft² | 213 tCO₂e |
| 2020 | 79 | -3 | 50.6 kBtu/ft² | 228 tCO₂e |
| 2019 | 82 | 49.1 kBtu/ft² | 244 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 1120 Atlantic Avenue, Long Beach
- City
- California
- State
- California
- ZIP
- 90813
- Coordinates
- 33.78114, -118.18471
Within ~1 km
Nearby benchmarked buildings
- Polytechnic Highscore 68
K-12 School · 419,676 sq ft
Multifamily Housing · 192,595 sq ft
- Urban Villagescore 58
Multifamily Housing · 151,861 sq ft
Retail Store · 126,104 sq ft
- Meeker Bakerscore 98
Office · 119,059 sq ft
- Pine At 6Thscore 62
Multifamily Housing · 116,004 sq ft
See also: most efficient in California · biggest emitters
How does St. Mary'S Tower compare with other multifamily housing buildings in California?
The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. St. Mary'S Tower's ENERGY STAR score of 84 compares with an average of 82 across the 9,612 that report a score; it scores higher than 37% of them and lower than 62%. Its site EUI of 47.3 kBtu/ft² is about 38% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.8 kgCO₂e/ft² is about 35% above the group average of 2.1 kgCO₂e/ft².
At 79,050 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. It was built in 1985, 3 years earlier than the group's average year built (1988). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has St. Mary'S Tower's energy performance changed over time?
BuildingCensus holds 5 California disclosures for St. Mary'S Tower, covering report years 2019, 2020, 2022, 2023, 2024. Its ENERGY STAR score went from 82 in 2019 to 84 in 2024 (+2 points); its best year on file was 2022, at 90. Site EUI moved from 49.1 kBtu/ft² (2019) to 47.3 kBtu/ft² (2024), a 4% decrease. Reported emissions went from 244 tCO₂e to 225 tCO₂e over the same span (down 8%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. St. Mary'S Tower's 47.3 kBtu/ft² across 79,050 sq ft works out to about 3.7 billion Btu (1,096 MWh-equivalent) in 2024. The disclosure also reports 556,752 kWh of electricity and 18,544 therms of natural gas for the year.
Which law requires St. Mary'S Tower to report its energy use?
St. Mary'S Tower 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:6136540:2024). 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.
More multifamily housing buildings in California
- Villa Columba· 79,040 sq ft · score 92 (A)
- Western - Market Rate: Plymouth Square· 79,037 sq ft · score 40 (D)
- The Plaza· 79,035 sq ft · score 100 (A)
- 10062 Walnut Park· 79,017 sq ft · score 98 (A)
- The Beverly Oakhurst· 79,006 sq ft · score 96 (A)
- Castlewood Terrace Ii· 79,001 sq ft · score 95 (A)
- Multifamily Housing buildings in California· 10,630 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is St. Mary'S Tower's energy grade?
St. Mary'S Tower scores 84 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does St. Mary'S Tower use?
Its 2024 site energy-use intensity was 47.3 kBtu/ft² across 79,050 sq ft, including 556,752 kWh of electricity and 18,544 therms of natural gas.
What are St. Mary'S Tower's carbon emissions?
St. Mary'S Tower reported 225 tCO₂e of greenhouse-gas emissions (2.8 kgCO₂e/ft²) for 2024.
Where is St. Mary'S Tower?
St. Mary'S Tower is at 1120 Atlantic Avenue, Long Beach, in Long Beach, California 90813. Its coordinates are 33.78114, -118.18471 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is St. Mary'S Tower and when was it built?
St. Mary'S Tower has 79,050 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as multifamily housing.
Is St. Mary'S Tower 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).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “St. Mary'S Tower, Long Beach, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/st-mary-s-tower-37e4b330 (data as of July 9, 2026).