Monarch At Dos Vientos
Multifamily Housing in California, CA · 255 Via Mirabella Via, Newbury Park · 91320
At a glance
Monarch At Dos Vientos is a 128,000-square-foot multifamily housing building at 255 Via Mirabella Via, Newbury Park in Newbury Park, California, built in 2006. In its 2021 California benchmarking disclosure it reported an ENERGY STAR score of 53 out of 100 (grade D), a site energy-use intensity of 28.9 kBtu/ft² and 245 tCO₂e of greenhouse-gas emissions. That score is higher than 11% of the 9,612 scored multifamily housing buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2021
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 53 (band D) |
| Site EUI | 28.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 245 tCO₂e |
| GHG intensity | 1.9 kgCO₂e/ft² |
| Electricity | 924,426 kWh |
| Natural gas | 5,489 therms |
| Gross floor area | 128,000 sq ft |
| Source record | california:23325767:2021 |
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
- 255 Via Mirabella Via, Newbury Park
- City
- California
- State
- California
- ZIP
- 91320
- Coordinates
- 34.17442, -118.97653
Within ~1 km
Nearby benchmarked buildings
- Monarch At Dos Vientosscore 82
Multifamily Housing · 122,235 sq ft
See also: most efficient in California · biggest emitters
How does Monarch At Dos Vientos 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. Monarch At Dos Vientos's ENERGY STAR score of 53 compares with an average of 82 across the 9,612 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 28.9 kBtu/ft² is about 16% 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 1.9 kgCO₂e/ft² is roughly in line with the group average of 2.1 kgCO₂e/ft².
At 128,000 sq ft, it is about 15% 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.
What does an ENERGY STAR score of 53 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 53 means the building performs better than about 53% of its national peers. BuildingCensus bands the score into report-card grades; 53 falls in band D — lowest band (1–54). It sits 22 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. Monarch At Dos Vientos's 28.9 kBtu/ft² across 128,000 sq ft works out to about 3.7 billion Btu (1,084 MWh-equivalent) in 2021. The disclosure also reports 924,426 kWh of electricity and 5,489 therms of natural gas for the year.
Which law requires Monarch At Dos Vientos to report its energy use?
Monarch At Dos Vientos 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 2021 disclosure (source record california:23325767:2021). 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
- 4874 E Los Coyotes Diagonal, Long Beach, Ca 90815, Usa· 127,976 sq ft · score 100 (A)
- 12751 W Millennium Drive· 127,927 sq ft · score 1 (D)
- Terra Camarillo (Rs84)· 127,920 sq ft · score 90 (A)
- 532 - Vintage Square At Westpark· 127,917 sq ft · score 100 (A)
- Lakeview I+Ii· 127,908 sq ft · score 95 (A)
- Western - Market Rate: Gateway Gardens· 127,896 sq ft · score 27 (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 Monarch At Dos Vientos's energy grade?
Monarch At Dos Vientos scores 53 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2021 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Monarch At Dos Vientos use?
Its 2021 site energy-use intensity was 28.9 kBtu/ft² across 128,000 sq ft, including 924,426 kWh of electricity and 5,489 therms of natural gas.
What are Monarch At Dos Vientos's carbon emissions?
Monarch At Dos Vientos reported 245 tCO₂e of greenhouse-gas emissions (1.9 kgCO₂e/ft²) for 2021.
Where is Monarch At Dos Vientos?
Monarch At Dos Vientos is at 255 Via Mirabella Via, Newbury Park, in Newbury Park, California 91320. Its coordinates are 34.17442, -118.97653 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Monarch At Dos Vientos and when was it built?
Monarch At Dos Vientos has 128,000 sq ft of gross floor area, as reported in its 2021 disclosure. The disclosure lists 2006 as its year built. It is classed as multifamily housing.
Is Monarch At Dos Vientos covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2021 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, “Monarch At Dos Vientos, Newbury Park, California — 2021 benchmarking disclosure”, https://buildingcensus.com/buildings/california/monarch-at-dos-vientos-88b6b397 (data as of July 9, 2026).