Mariposa Gardens
Mixed Residential in San Francisco, CA · 2445 MARIPOSA ST · 94110
At a glance
Mariposa Gardens is a 76,394-square-foot mixed residential building at 2445 MARIPOSA ST in San Francisco, California, built in 1983. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 27.8 kBtu/ft² and 115 tCO₂e of greenhouse-gas emissions. That score is higher than 69% of the 340 scored mixed residential buildings in San Francisco.
SF Environment Code Chapter 20 · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 27.8 kBtu/ft² |
| Source EUI | 41.5 kBtu/ft² |
| GHG emissions | 115 tCO₂e |
| GHG intensity | 1.5 kgCO₂e/ft² |
| Electricity | 158,017 kWh |
| Natural gas | 15,826 therms |
| Gross floor area | 76,394 sq ft |
| Source record | sf:4014/001:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 100 | ±0 | 27.8 kBtu/ft² | 115 tCO₂e |
| 2024 | 100 | +1 | 27.5 kBtu/ft² | 119 tCO₂e |
| 2023 | 99 | -1 | 29.6 kBtu/ft² | 131 tCO₂e |
| 2022 | 100 | 27.2 kBtu/ft² | 118 tCO₂e | |
| 2021 | — | 32.2 kBtu/ft² | 136 tCO₂e | |
| 2020 | — | 32.6 kBtu/ft² | 141 tCO₂e | |
| 2019 | — | — | — | |
| 2018 | — | — | — |
Compliance context
SF Environment Code Chapter 20
San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
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
- 2445 MARIPOSA ST
- City
- San Francisco
- State
- California
- ZIP
- 94110
- Coordinates
- 37.76273, -122.40778
Within ~1 km
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See also: most efficient in San Francisco · biggest emitters
How does Mariposa Gardens compare with other mixed residential buildings in San Francisco?
The latest disclosures cover 610 mixed residential buildings in San Francisco, out of 2,509 buildings citywide. Mariposa Gardens's ENERGY STAR score of 100 compares with an average of 85 across the 340 that report a score; it scores higher than 69% of them. Its site EUI of 27.8 kBtu/ft² is about 23% below the average of 36.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.5 kgCO₂e/ft² is about 25% below the group average of 2.0 kgCO₂e/ft².
At 76,394 sq ft, it is about half of the average floor area of 165,572 sq ft for those buildings. It was built in 1983, 17 years later than the group's average year built (1967).
How has Mariposa Gardens's energy performance changed over time?
BuildingCensus holds 8 San Francisco disclosures for Mariposa Gardens, covering report years 2018–2025. Its ENERGY STAR score was 100 in both 2022 and 2025. Site EUI moved from 32.6 kBtu/ft² (2020) to 27.8 kBtu/ft² (2025), a 15% decrease. Reported emissions went from 141 tCO₂e to 115 tCO₂e over the same span (down 19%).
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 San Francisco, 73% 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. Mariposa Gardens's 27.8 kBtu/ft² across 76,394 sq ft works out to about 2.1 billion Btu (622 MWh-equivalent) in 2025. Its source EUI of 41.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 158,017 kWh of electricity and 15,826 therms of natural gas for the year.
Which law requires Mariposa Gardens to report its energy use?
Mariposa Gardens reports under SF Environment Code Chapter 20, the legal basis of San Francisco's Existing Buildings Energy Performance Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2025 disclosure (source record sf:4014/001:2025). San Francisco's ordinance requires annual benchmarking for commercial buildings over 10,000 sq ft, with administrative penalties for buildings that fail to report.
More mixed residential buildings in San Francisco
- 18 LANSING ST· 76,374 sq ft · score 96 (A)
- 3160 21ST ST· 75,939 sq ft
- 2000 WASHINGTON ST· 75,762 sq ft · EUI 36.0 kBtu/ft²
- 4150 17TH ST· 75,576 sq ft · score 100 (A)
- 1020 Union St· 75,500 sq ft · score 54 (D)
- 200 PORTOLA DR· 75,000 sq ft · score 100 (A)
- Mixed Residential buildings in San Francisco· 610 benchmarked
- All San Francisco benchmarked buildings· SF Environment Code Chapter 20
- Most efficient large buildings in San Francisco
- Least efficient large buildings in San Francisco
- Biggest emitters in San Francisco
Frequently asked questions
What is Mariposa Gardens's energy grade?
Mariposa Gardens scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2025 San Francisco disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mariposa Gardens use?
Its 2025 site energy-use intensity was 27.8 kBtu/ft² (41.5 kBtu/ft² source) across 76,394 sq ft, including 158,017 kWh of electricity and 15,826 therms of natural gas.
What are Mariposa Gardens's carbon emissions?
Mariposa Gardens reported 115 tCO₂e of greenhouse-gas emissions (1.5 kgCO₂e/ft²) for 2025.
Where is Mariposa Gardens?
Mariposa Gardens is at 2445 MARIPOSA ST, in San Francisco, California 94110. Its coordinates are 37.76273, -122.40778 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.
How big is Mariposa Gardens and when was it built?
Mariposa Gardens has 76,394 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 1983 as its year built. It is classed as mixed residential.
Is Mariposa Gardens covered by SF Environment Code Chapter 20?
Yes — it appears in the 2025 Existing Buildings Energy Performance Ordinance disclosure, which lists the buildings reporting under SF Environment Code Chapter 20.
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About this data
Source: Existing Buildings Energy Performance Ordinance (SF Environment Code Chapter 20), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Mariposa Gardens, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/mariposa-gardens-850b8f02 (data as of October 2, 2026).