For-sale builders (i.e., building on own land, for sale), residential · California

Cornerstone Communities Corporation

Name: Cornerstone Communities Corporation Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

San Diego, CA · ~65 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

A
Excellent Safety Record: 1.8
Avg TCR: 3.8
Industry avg: 0
Fatalities

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The verdict

Cornerstone Communities Corporation runs at 48% of its industry's injury rate - far safer than the typical For-sale builders (i.e., building on own land, for sale), residential workplace, earning a grade A.

Cornerstone Communities Corporation: 1.8 TCR = 48% of For-sale builders (i.e., building on own land, for sale), residential BLS 3.8 · 3y Form 300A (see methodology below)

Cornerstone Communities Corporation safety composite

Cornerstone Communities Corporation scores strongest on dart rate (safer than 73% of same-industry peers) and weakest on total case rate (tcr) (safer than 45%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

56/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): D 1.84 per 100 workers

Safer than 45% of industry peers
DART rate: C 0 per 100 workers

Safer than 73% of industry peers
Fatalities: D 0

Safer than 50% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−4.1

2018→2020

Cornerstone Communities Corporation injury rate improved

Cornerstone Communities Corporation's TCR fell 4.1 from 4.1 in 2018 to 0.0 in 2020. Peak filing year was 2018 at 4.1 TCR. In 2020, DART was 0× this establishment's average TCR (severity share of cases).

2018=4.1 · 2019=1.4 · 2020=0.0

OSHA ITA Form 300A scorecard

Establishment book 236117 · San Diego, CA AT/BELOW-IND · SMALL

Grade A · TCR 1.8 · 48% of ind

DART 0.0 DART
RANK #27/43
PHOTO Lennar Reno
BOOK 3y book
INJ 4 inj
SIZE ~65 FTE

Nearest TCR peer: Lennar Reno (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Lennar Reno

1.9
SYMPHONY HOMES

1.9
This site

1.8
KB Home Tampa

1.8
Design Space M

1.8

What this shows Cornerstone Communities Corporation averages 1.8 TCR (48% of the For-sale builders (i.e., building on own land, for sale), residential BLS benchmark).

Cornerstone Communities Corporation TCR series: 2018=4.1 · 2019=1.4 · 2020=0 · BLS 3.8

Where Cornerstone Communities Corporation falls in its industry

341 For-sale builders (i.e., build establishments

Safer than 45% of graded establishments in this industry, whose median TCR is 1.7.

Grade A

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #27 safest of 43 For-sale builders (i.e., build employers in California.

Cornerstone Communities Corporation (65 employees, TCR 1.8) among 29 same-industry peers, split at the industry median of 79 employees and a TCR of 1.7

Cornerstone Communities Corporation has fewer employees than the For-sale builders (i.e., building on own median and a higher injury rate than the industry's median TCR of 1.7. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year	TCR	DART	Injuries
2020	0.0	0.0	0
2019	1.4	1.4	1
2018	4.1	2.8	3

OSHA ITA peer cross-reference

Establishment peer ledger

236117 · CA · San Diego

341 For-sale builders (i.e., building on own land, for sale), residential employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 1,979 employers in San Diego, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Lennar Reno	RENO, NV	1.9 TCR
NAICS-TCR	SYMPHONY HOMES	CENTERVILLE, UT	1.9 TCR
NAICS-TCR	KB Home Tampa LLC	RIVERVIEW, FL	1.8 TCR
NAICS-TCR	Design Space Modular Buildings	MISSION VIEJO, CA	1.8 TCR
STATE-SIZE	SunnySlope Tree Farm, Inc.	ANAHEIM	65 FTE
STATE-SIZE	Crown Nursery	RED BLUFF	65 FTE
STATE-SIZE	De Jager Farms, Inc.	CHOWCHILLA	65 FTE
STATE-SIZE	Demler Enterprises, LLC	WASCO	65 FTE
CITY-NEAR	UC San Diego Health	San Diego	9,310 FTE
CITY-NEAR	General Atomics	San Diego	8,108 FTE
CITY-NEAR	Health Human Services Agency	San Diego	6,080 FTE
CITY-NEAR	National University	San Diego	4,955 FTE
NAT-TCR	TTI- Calvert City, KY	Calvert City, KY	1.8 TCR
NAT-TCR	General Cable - Marshall	Scottsville, TX	1.8 TCR
NAT-TCR	Deseret Power Plant	Vernal, UT	1.8 TCR
NAT-TCR	DC - Hoffman Estates, IL	Hoffman Estates, IL	1.8 TCR
NAT-SIZE	HoneywellIL75	Rock Island, IL	65 FTE
NAT-SIZE	HG006	Westwood, MA	65 FTE
NAT-SIZE	Michigan Cat Macomb	Macomb, MI	65 FTE
NAT-SIZE	Sylvester Plant	Sylvester, GA	65 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2020, 2019, 2018. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.