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Avalon at Mission Bay II – Mid-rise

Mixed Residential in San Francisco, CA · 351 KING ST · 94158

At a glance

Avalon at Mission Bay II – Mid-rise is a 156,227-square-foot mixed residential building at 351 KING ST in San Francisco, California, built in 2006. In its 2025 San Francisco benchmarking disclosure it reported an ENERGY STAR score of 85 out of 100 (grade A), a site energy-use intensity of 32.2 kBtu/ft² and 279 tCO₂e of greenhouse-gas emissions. That score is higher than 28% of the 340 scored mixed residential buildings in San Francisco.

ENERGY STAR score
85
band A · 2025
Site EUI
32.2
kBtu/ft²
GHG emissions
279
tCO₂e
GHG intensity
1.8
kgCO₂e/ft²
Floor area
156,227
sq ft
Year built
2006
vintage
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85–10070–8455–691–54
This entry + 6 nearby

SF Environment Code Chapter 20 · reporting year 2025

Benchmarking record

FieldValue
ENERGY STAR score85 (band A)
Site EUI32.2 kBtu/ft²
Source EUI66.8 kBtu/ft²
GHG emissions279 tCO₂e
GHG intensity1.8 kgCO₂e/ft²
Electricity865,126 kWh
Natural gas20,746 therms
Gross floor area156,227 sq ft
Source recordsf:8705/012:2025

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2025latest85+132.2 kBtu/ft²279 tCO₂e
202484-833.5 kBtu/ft²290 tCO₂e
202392+526.6 kBtu/ft²270 tCO₂e
202287+531.1 kBtu/ft²304 tCO₂e
20218231.9 kBtu/ft²288 tCO₂e
2020—31.4 kBtu/ft²283 tCO₂e
201983+432.2 kBtu/ft²320 tCO₂e
20187932.7 kBtu/ft²326 tCO₂e

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.

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Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
351 KING ST
State
California
ZIP
94158
Coordinates
37.77552, -122.39423

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in San Francisco · biggest emitters

How does Avalon at Mission Bay II – Mid-rise 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. Avalon at Mission Bay II – Mid-rise's ENERGY STAR score of 85 compares with an average of 85 across the 340 that report a score; it scores higher than 28% of them and lower than 71%. Its site EUI of 32.2 kBtu/ft² is about 11% 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 1.8 kgCO₂e/ft² is about 10% below the group average of 2.0 kgCO₂e/ft².

At 156,227 sq ft, it is roughly in line with the average floor area of 165,572 sq ft for those buildings. It was built in 2006, 40 years later than the group's average year built (1967).

How has Avalon at Mission Bay II – Mid-rise's energy performance changed over time?

BuildingCensus holds 8 San Francisco disclosures for Avalon at Mission Bay II – Mid-rise, covering report years 2018–2025. Its ENERGY STAR score went from 79 in 2018 to 85 in 2025 (+6 points); its best year on file was 2023, at 92. Site EUI moved from 32.7 kBtu/ft² (2018) to 32.2 kBtu/ft² (2025), a 2% decrease. Reported emissions went from 326 tCO₂e to 279 tCO₂e over the same span (down 15%).

What does an ENERGY STAR score of 85 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 85 means the building performs better than about 85% of its national peers. BuildingCensus bands the score into report-card grades; 85 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. Avalon at Mission Bay II – Mid-rise's 32.2 kBtu/ft² across 156,227 sq ft works out to about 5 billion Btu (1,474 MWh-equivalent) in 2025. Its source EUI of 66.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 865,126 kWh of electricity and 20,746 therms of natural gas for the year.

Which law requires Avalon at Mission Bay II – Mid-rise to report its energy use?

Avalon at Mission Bay II – Mid-rise 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:8705/012:2025). 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

Frequently asked questions

What is Avalon at Mission Bay II – Mid-rise's energy grade?

Avalon at Mission Bay II – Mid-rise scores 85 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 Avalon at Mission Bay II – Mid-rise use?

Its 2025 site energy-use intensity was 32.2 kBtu/ft² (66.8 kBtu/ft² source) across 156,227 sq ft, including 865,126 kWh of electricity and 20,746 therms of natural gas.

What are Avalon at Mission Bay II – Mid-rise's carbon emissions?

Avalon at Mission Bay II – Mid-rise reported 279 tCO₂e of greenhouse-gas emissions (1.8 kgCO₂e/ft²) for 2025.

Where is Avalon at Mission Bay II – Mid-rise?

Avalon at Mission Bay II – Mid-rise is at 351 KING ST, in San Francisco, California 94158. Its coordinates are 37.77552, -122.39423 (latitude, longitude), as published in the Existing Buildings Energy Performance Ordinance file.

How big is Avalon at Mission Bay II – Mid-rise and when was it built?

Avalon at Mission Bay II – Mid-rise has 156,227 sq ft of gross floor area, as reported in its 2025 disclosure. The disclosure lists 2006 as its year built. It is classed as mixed residential.

Is Avalon at Mission Bay II – Mid-rise 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, “Avalon at Mission Bay II – Mid-rise, San Francisco, California — 2025 benchmarking disclosure”, https://buildingcensus.com/buildings/san-francisco/avalon-at-mission-bay-ii-mid-rise-93b08102 (data as of October 2, 2026).