Mercy Gardens Apts
Multifamily Housing in San Diego, CA · 540 Lewis St
At a glance
Mercy Gardens Apts is a 16,962-square-foot multifamily housing building at 540 Lewis St in San Diego, California, built in 1923. In its 2022 San Diego benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B) and a site energy-use intensity of 33.4 kBtu/ft². That score is higher than 13% of the 383 scored multifamily housing buildings in San Diego.
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 76 (band B) |
| Site EUI | 33.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Gross floor area | 16,962 sq ft |
| Source record | san_diego:102320:2022 |
Compliance context
Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)
San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 540 Lewis St
- City
- San Diego
- State
- California
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in San Diego · biggest emitters
How does Mercy Gardens Apts compare with other multifamily housing buildings in San Diego?
The latest disclosures cover 469 multifamily housing buildings in San Diego, out of 2,567 buildings citywide. Mercy Gardens Apts's ENERGY STAR score of 76 compares with an average of 90 across the 383 that report a score; it scores higher than 13% of them and lower than 86%. Its site EUI of 33.4 kBtu/ft² is about 27% above the average of 26.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 16,962 sq ft, it is about 92% below the average floor area of 203,251 sq ft for those buildings. It was built in 1923, 71 years earlier than the group's average year built (1994). 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 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 falls in band B — above median (70–84). 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 Diego, 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. Mercy Gardens Apts's 33.4 kBtu/ft² across 16,962 sq ft works out to about 0.6 billion Btu (166 MWh-equivalent) in 2022.
Which law requires Mercy Gardens Apts to report its energy use?
Mercy Gardens Apts reports under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12), the legal basis of San Diego's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2022 disclosure (source record san_diego:102320:2022). San Diego's ordinance requires annual benchmarking for commercial buildings over 50,000 sq ft, with civil penalties for buildings that fail to report.
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- Multifamily Housing buildings in San Diego· 469 benchmarked
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Frequently asked questions
What is Mercy Gardens Apts's energy grade?
Mercy Gardens Apts scores 76 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2022 San Diego disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Mercy Gardens Apts use?
Its 2022 site energy-use intensity was 33.4 kBtu/ft² across 16,962 sq ft.
What are Mercy Gardens Apts's carbon emissions?
No greenhouse-gas emissions figure was reported for 2022.
Where is Mercy Gardens Apts?
Mercy Gardens Apts is at 540 Lewis St, in San Diego, California.
How big is Mercy Gardens Apts and when was it built?
Mercy Gardens Apts has 16,962 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1923 as its year built. It is classed as multifamily housing.
Is Mercy Gardens Apts covered by the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)?
Yes — it appears in the 2022 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12).
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About this data
Source: Building Energy Benchmarking (Building Energy Benchmarking Ordinance (SDMC Ch. 14 Art. 12)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Mercy Gardens Apts, San Diego, California — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/san-diego/mercy-gardens-apts-2810bc7b (data as of July 9, 2026).