Viridian Lofts (Vr096)
Multifamily Housing in California, CA · 1023 4Th Ave, San Diego · 92101
At a glance
Viridian Lofts (Vr096) is a 207,222-square-foot multifamily housing building at 1023 4Th Ave, San Diego in San Diego, California, built in 1913. 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 6.6 kBtu/ft² and 88 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 | 6.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 88 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 388,895 kWh |
| Gross floor area | 207,222 sq ft |
| Source record | california:22465520:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 6.6 kBtu/ft² | 88 tCO₂e |
| 2022 | 100 | 5.4 kBtu/ft² | 77 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
- 1023 4Th Ave, San Diego
- City
- California
- State
- California
- ZIP
- 92101
- Coordinates
- 32.71614, -117.16080
Within ~1 km
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See also: most efficient in California · biggest emitters
How does Viridian Lofts (Vr096) 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. Viridian Lofts (Vr096)'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 6.6 kBtu/ft² is about 81% 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 0.4 kgCO₂e/ft² is about 80% below the group average of 2.1 kgCO₂e/ft².
At 207,222 sq ft, it is about 37% above the average floor area of 150,919 sq ft for those buildings. It was built in 1913, 75 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 Viridian Lofts (Vr096)'s energy performance changed over time?
BuildingCensus holds 2 California disclosures for Viridian Lofts (Vr096), covering report years 2022, 2024. Its ENERGY STAR score was 100 in both 2022 and 2024. Site EUI moved from 5.4 kBtu/ft² (2022) to 6.6 kBtu/ft² (2024), an 22% increase. Reported emissions went from 77 tCO₂e to 88 tCO₂e over the same span (up 14%).
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. Viridian Lofts (Vr096)'s 6.6 kBtu/ft² across 207,222 sq ft works out to about 1.4 billion Btu (401 MWh-equivalent) in 2024. The disclosure also reports 388,895 kWh of electricity for the year.
Which law requires Viridian Lofts (Vr096) to report its energy use?
Viridian Lofts (Vr096) 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:22465520:2024). 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
- Coronado Shores Condominium Association No. 9· 207,201 sq ft · score 99 (A)
- The Aquatic 3· 207,156 sq ft · EUI 18.0 kBtu/ft²
- Casa Madrid· 207,104 sq ft · score 100 (A)
- Rancho Del Rio Estates· 207,084 sq ft · score 100 (A)
- Avana Sunnyvale (Vn246)· 207,016 sq ft · score 93 (A)
- Harborside Marina Bay Apartments· 206,945 sq ft · score 34 (D)
- 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 Viridian Lofts (Vr096)'s energy grade?
Viridian Lofts (Vr096) 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 Viridian Lofts (Vr096) use?
Its 2024 site energy-use intensity was 6.6 kBtu/ft² across 207,222 sq ft, including 388,895 kWh of electricity.
What are Viridian Lofts (Vr096)'s carbon emissions?
Viridian Lofts (Vr096) reported 88 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2024.
Where is Viridian Lofts (Vr096)?
Viridian Lofts (Vr096) is at 1023 4Th Ave, San Diego, in San Diego, California 92101. Its coordinates are 32.71614, -117.16080 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Viridian Lofts (Vr096) and when was it built?
Viridian Lofts (Vr096) has 207,222 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1913 as its year built. It is classed as multifamily housing.
Is Viridian Lofts (Vr096) 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, “Viridian Lofts (Vr096), San Diego, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/viridian-lofts-vr096-a20ce21a (data as of July 9, 2026).