Sage Canyon Apartments
Multifamily Housing in California, CA · 1020 Stephanie Court, San Marcos · 92078
At a glance
Sage Canyon Apartments is a 63,458-square-foot multifamily housing building at 1020 Stephanie Court, San Marcos in San Marcos, California, built in 2006. 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 55.0 kBtu/ft² and 211 tCO₂e of greenhouse-gas emissions. That score is higher than 4% 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 | 26 (band D) |
| Site EUI | 55.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 211 tCO₂e |
| GHG intensity | 3.3 kgCO₂e/ft² |
| Electricity | 540,472 kWh |
| Natural gas | 16,764 therms |
| Gross floor area | 63,458 sq ft |
| Source record | california:5724582:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 26 | +5 | 55.0 kBtu/ft² | 211 tCO₂e |
| 2023 | 21 | -79 | 58.7 kBtu/ft² | 232 tCO₂e |
| 2022 | 100 | +2 | 1.3 kBtu/ft² | 5 tCO₂e |
| 2021 | 98 | +7 | 26.9 kBtu/ft² | 97 tCO₂e |
| 2020 | 91 | 35.8 kBtu/ft² | 134 tCO₂e | |
| 2019 | — | 22.0 kBtu/ft² | 75 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
- 1020 Stephanie Court, San Marcos
- City
- California
- State
- California
- ZIP
- 92078
- Coordinates
- 33.10329, -117.19230
Within ~1 km
Nearby benchmarked buildings
- Copper Creek 4%score 97
Multifamily Housing · 194,357 sq ft
- San Elijo Middle Schoolscore 73
K-12 School · 106,755 sq ft
- San Elijo Elementary Schoolscore 88
K-12 School · 76,448 sq ft
See also: most efficient in California · biggest emitters
How does Sage Canyon Apartments 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. Sage Canyon Apartments's ENERGY STAR score of 26 compares with an average of 82 across the 9,612 that report a score; it scores higher than 4% of them and lower than 95%. Its site EUI of 55.0 kBtu/ft² is about 60% 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 3.3 kgCO₂e/ft² is about 59% above the group average of 2.1 kgCO₂e/ft².
At 63,458 sq ft, it is about 58% below the average floor area of 150,919 sq ft for those buildings. It was built in 2006, 18 years later 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 Sage Canyon Apartments's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Sage Canyon Apartments, covering report years 2019–2024. Its ENERGY STAR score went from 91 in 2020 to 26 in 2024 (-65 points); its best year on file was 2022, at 100. Site EUI moved from 22.0 kBtu/ft² (2019) to 55.0 kBtu/ft² (2024), an 150% increase. Reported emissions went from 75 tCO₂e to 211 tCO₂e over the same span (up 183%).
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. Sage Canyon Apartments's 55.0 kBtu/ft² across 63,458 sq ft works out to about 3.5 billion Btu (1,023 MWh-equivalent) in 2024. The disclosure also reports 540,472 kWh of electricity and 16,764 therms of natural gas for the year.
Which law requires Sage Canyon Apartments to report its energy use?
Sage Canyon Apartments 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:5724582:2024). 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
- 310 Dakota - 310 W Dakota Ave, Fresno, Ca 93705, Usa· 63,456 sq ft · score 100 (A)
- Dronfield 2· 63,454 sq ft · score 99 (A)
- Harmony Gates· 63,441 sq ft · score 100 (A)
- Main Street Plaza· 63,430 sq ft · score 97 (A)
- Boulevard On Wilshire (Mt80) - Building 1· 63,427 sq ft · score 54 (D)
- Gables East - 1544No· 63,390 sq ft · score 81 (B)
- 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 Sage Canyon Apartments's energy grade?
Sage Canyon Apartments 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 Sage Canyon Apartments use?
Its 2024 site energy-use intensity was 55.0 kBtu/ft² across 63,458 sq ft, including 540,472 kWh of electricity and 16,764 therms of natural gas.
What are Sage Canyon Apartments's carbon emissions?
Sage Canyon Apartments reported 211 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2024.
Where is Sage Canyon Apartments?
Sage Canyon Apartments is at 1020 Stephanie Court, San Marcos, in San Marcos, California 92078. Its coordinates are 33.10329, -117.19230 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Sage Canyon Apartments and when was it built?
Sage Canyon Apartments has 63,458 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2006 as its year built. It is classed as multifamily housing.
Is Sage Canyon Apartments 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, “Sage Canyon Apartments, San Marcos, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/sage-canyon-apartments-b8025ba1 (data as of July 9, 2026).