640 - Liberty At Aliso
Multifamily Housing in California, CA · 100 Freedom Lane, Aliso Viejo · 92656
At a glance
640 - Liberty At Aliso is a 298,000-square-foot multifamily housing building at 100 Freedom Lane, Aliso Viejo in Aliso Viejo, California, built in 1960. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 13.9 kBtu/ft² and 251 tCO₂e of greenhouse-gas emissions. That score is higher than 76% 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 | 100 (band A) |
| Site EUI | 13.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 251 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 690,308 kWh |
| Natural gas | 17,734 therms |
| Gross floor area | 298,000 sq ft |
| Source record | california:6827960:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 13.9 kBtu/ft² | 251 tCO₂e |
| 2023 | 100 | ±0 | 13.8 kBtu/ft² | 260 tCO₂e |
| 2022 | 100 | ±0 | 13.5 kBtu/ft² | 241 tCO₂e |
| 2021 | 100 | ±0 | 13.5 kBtu/ft² | 230 tCO₂e |
| 2020 | 100 | ±0 | 14.1 kBtu/ft² | 234 tCO₂e |
| 2019 | 100 | 8.3 kBtu/ft² | 142 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
- 100 Freedom Lane, Aliso Viejo
- City
- California
- State
- California
- ZIP
- 92656
- Coordinates
- 33.56295, -117.72907
Within ~1 km
Nearby benchmarked buildings
- 621 - Vintage At Alisoscore 100
Multifamily Housing · 212,979 sq ft
- 4105-Aliso Viejo - Orionscore —
Self-Storage Facility · 137,625 sq ft
- Woodpark Apartments - Marimanscore 70
Multifamily Housing · 128,000 sq ft
Office · 125,287 sq ft
- Belmont Village Aliso Viejoscore 31
Senior Living Community · 124,381 sq ft
- Aliso Viejo Self Storagescore —
Self-Storage Facility · 82,946 sq ft
See also: most efficient in California · biggest emitters
How does 640 - Liberty At Aliso 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. 640 - Liberty At Aliso's ENERGY STAR score of 100 compares with an average of 82 across the 9,612 that report a score; it scores higher than 76% of them. Its site EUI of 13.9 kBtu/ft² is about 60% below the average of 34.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.8 kgCO₂e/ft² is about 60% below the group average of 2.1 kgCO₂e/ft².
At 298,000 sq ft, it is about twice the average floor area of 150,919 sq ft for those buildings. It was built in 1960, 28 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 640 - Liberty At Aliso's energy performance changed over time?
BuildingCensus holds 6 California disclosures for 640 - Liberty At Aliso, covering report years 2019–2024. Its ENERGY STAR score was 100 in both 2019 and 2024. Site EUI moved from 8.3 kBtu/ft² (2019) to 13.9 kBtu/ft² (2024), an 67% increase. Reported emissions went from 142 tCO₂e to 251 tCO₂e over the same span (up 77%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). 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. 640 - Liberty At Aliso's 13.9 kBtu/ft² across 298,000 sq ft works out to about 4.1 billion Btu (1,214 MWh-equivalent) in 2024. The disclosure also reports 690,308 kWh of electricity and 17,734 therms of natural gas for the year.
Which law requires 640 - Liberty At Aliso to report its energy use?
640 - Liberty At Aliso 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:6827960:2024). 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
- Marina Playa· 297,605 sq ft · score 75 (B)
- Hendrix· 297,565 sq ft · score 98 (A)
- Bella Villagio - Essex (Bl400)· 297,408 sq ft · score 72 (B)
- Ca587_Avalon Walnut Ridge Ii (Rc32)· 297,243 sq ft · score 76 (B)
- Monticello Ii #1· 297,231 sq ft · score 96 (A)
- Highridge - Essex (Hg136)· 297,150 sq ft · score 85 (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 640 - Liberty At Aliso's energy grade?
640 - Liberty At Aliso scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 640 - Liberty At Aliso use?
Its 2024 site energy-use intensity was 13.9 kBtu/ft² across 298,000 sq ft, including 690,308 kWh of electricity and 17,734 therms of natural gas.
What are 640 - Liberty At Aliso's carbon emissions?
640 - Liberty At Aliso reported 251 tCO₂e of greenhouse-gas emissions (0.8 kgCO₂e/ft²) for 2024.
Where is 640 - Liberty At Aliso?
640 - Liberty At Aliso is at 100 Freedom Lane, Aliso Viejo, in Aliso Viejo, California 92656. Its coordinates are 33.56295, -117.72907 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is 640 - Liberty At Aliso and when was it built?
640 - Liberty At Aliso has 298,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1960 as its year built. It is classed as multifamily housing.
Is 640 - Liberty At Aliso 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, “640 - Liberty At Aliso, Aliso Viejo, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/640-liberty-at-aliso-0c9ace27 (data as of July 9, 2026).