Mariners Place - Essex (Mr440)
Multifamily Housing in California, CA · 711 South B Street, Oxnard · 93030
At a glance
Mariners Place - Essex (Mr440) is a 77,727-square-foot multifamily housing building at 711 South B Street, Oxnard in Oxnard, California, built in 1987. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 19.4 kBtu/ft² and 84 tCO₂e of greenhouse-gas emissions. That score is higher than 71% 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 | 99 (band A) |
| Site EUI | 19.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 84 tCO₂e |
| GHG intensity | 1.1 kgCO₂e/ft² |
| Electricity | 365,169 kWh |
| Natural gas | 2,406 therms |
| Gross floor area | 77,727 sq ft |
| Source record | california:23943923:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 99 | +47 | 19.4 kBtu/ft² | 84 tCO₂e |
| 2023 | 52 | -33 | 57.6 kBtu/ft² | 263 tCO₂e |
| 2022 | 85 | 37.0 kBtu/ft² | 174 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
- 711 South B Street, Oxnard
- City
- California
- State
- California
- ZIP
- 93030
- Coordinates
- 34.19436, -119.18067
Within ~1 km
Nearby benchmarked buildings
- Heritage Park Apartmentsscore 100
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- 300 W Ninth Stscore 100
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- Casa Merced Apartmentsscore 94
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- Casa San Juan Aptsscore 100
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- Palm Vistascore 64
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- Oxnard Public Libraryscore —
Library · 72,000 sq ft
See also: most efficient in California · biggest emitters
How does Mariners Place - Essex (Mr440) 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. Mariners Place - Essex (Mr440)'s ENERGY STAR score of 99 compares with an average of 82 across the 9,612 that report a score; it scores higher than 71% of them and lower than 24%. Its site EUI of 19.4 kBtu/ft² is about 44% 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 1.1 kgCO₂e/ft² is about half of the group average of 2.1 kgCO₂e/ft².
At 77,727 sq ft, it is about half of the average floor area of 150,919 sq ft for those buildings. Its 1987 construction date is close to 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 Mariners Place - Essex (Mr440)'s energy performance changed over time?
BuildingCensus holds 3 California disclosures for Mariners Place - Essex (Mr440), covering report years 2022–2024. Its ENERGY STAR score went from 85 in 2022 to 99 in 2024 (+14 points). Site EUI moved from 37.0 kBtu/ft² (2022) to 19.4 kBtu/ft² (2024), a 48% decrease. Reported emissions went from 174 tCO₂e to 84 tCO₂e over the same span (down 52%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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. Mariners Place - Essex (Mr440)'s 19.4 kBtu/ft² across 77,727 sq ft works out to about 1.5 billion Btu (442 MWh-equivalent) in 2024. The disclosure also reports 365,169 kWh of electricity and 2,406 therms of natural gas for the year.
Which law requires Mariners Place - Essex (Mr440) to report its energy use?
Mariners Place - Essex (Mr440) 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:23943923:2024). 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
- Bella Vista (Bl201)· 77,708 sq ft · score 57 (C)
- 2505 W. 6Th Street - Ladbs· 77,697 sq ft · score 71 (B)
- 2505 W 6Th St - Asbury Apartments· 77,697 sq ft · score 14 (D)
- Castle Arms Apartments Llc· 77,695 sq ft · score 99 (A)
- Il Palazzo (12069)· 77,679 sq ft · EUI 32.5 kBtu/ft²
- 4450 Saviers Rd, Oxnard, Ca 93033· 77,645 sq ft · score 100 (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 Mariners Place - Essex (Mr440)'s energy grade?
Mariners Place - Essex (Mr440) scores 99 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 Mariners Place - Essex (Mr440) use?
Its 2024 site energy-use intensity was 19.4 kBtu/ft² across 77,727 sq ft, including 365,169 kWh of electricity and 2,406 therms of natural gas.
What are Mariners Place - Essex (Mr440)'s carbon emissions?
Mariners Place - Essex (Mr440) reported 84 tCO₂e of greenhouse-gas emissions (1.1 kgCO₂e/ft²) for 2024.
Where is Mariners Place - Essex (Mr440)?
Mariners Place - Essex (Mr440) is at 711 South B Street, Oxnard, in Oxnard, California 93030. Its coordinates are 34.19436, -119.18067 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Mariners Place - Essex (Mr440) and when was it built?
Mariners Place - Essex (Mr440) has 77,727 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1987 as its year built. It is classed as multifamily housing.
Is Mariners Place - Essex (Mr440) 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, “Mariners Place - Essex (Mr440), Oxnard, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/mariners-place-essex-mr440-8b200bc0 (data as of July 9, 2026).