10227 MASON AVE
Multifamily Housing in Los Angeles, CA · 91311
LA Municipal Code Div. 97, §91.9701 (EBEWE) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 93 (band A) |
| Site EUI | 26.9 kBtu/ft² |
| Source EUI | 75.4 kBtu/ft² |
| GHG emissions | 51 tCO₂e |
| GHG intensity | — |
| Water use | 3,391 kgal |
| Gross floor area | 33,080 sq ft |
| Source record | la:999000000237:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 93 | +1 | 26.9 kBtu/ft² | 51 tCO₂e |
| 2024 | 92 | 28.0 kBtu/ft² | 62 tCO₂e | |
| 2023 | — | 26.9 kBtu/ft² | 63 tCO₂e | |
| 2022 | — | 27.3 kBtu/ft² | 64 tCO₂e | |
| 2021 | — | 26.4 kBtu/ft² | 62 tCO₂e | |
| 2020 | — | 28.4 kBtu/ft² | 64 tCO₂e | |
| 2019 | — | 24.6 kBtu/ft² | 49 tCO₂e | |
| 2018 | — | 25.2 kBtu/ft² | 55 tCO₂e |
Compliance context
LA Municipal Code Div. 97, §91.9701 (EBEWE)
EBEWE requires annual benchmarking plus audits/retro-commissioning every five years for privately owned buildings of 20,000 sq ft or more; non-compliance carries a $202 fee (LAMC §91.9712) plus possible late fees.
Ownership
DM Riviera LLC
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Location
- Address
- 10227 MASON AVE
- City
- Los Angeles
- State
- California
- ZIP
- 91311
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Los Angeles · biggest emitters
Frequently asked questions
What is 10227 MASON AVE's energy grade?
10227 MASON AVE scores 93 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 Los Angeles disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 10227 MASON AVE use?
Its 2025 site energy-use intensity was 26.9 kBtu/ft² (75.4 kBtu/ft² source) across 33,080 sq ft.
What are 10227 MASON AVE's carbon emissions?
10227 MASON AVE reported 51 tCO₂e of greenhouse-gas emissions for 2025. EBEWE requires annual benchmarking plus audits/retro-commissioning every five years for privately owned buildings of 20,000 sq ft or more; non-compliance carries a $202 fee (LAMC §91.9712) plus possible late fees.
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Dataset updated . Source: Existing Buildings Energy & Water Efficiency (EBEWE) disclosure, record la:999000000237:2025.