Mechanics Bank
Walnut Creek, California, Contra Costa County
$21.2B in total assets, the 105th largest of 4,309 US banks and 6th of 120 headquartered in California.
- FDIC certificate
- 1768
- Established
- 1905
- Owned by
- 2011 Tcrt
- Primary regulator
- FDIC
- Website
- www.mechanicsbank.com
At a glance
Compared with 9 banks headquartered in California with $10 billion to $100 billion in assets, as of June 30, 2026.
| Measure | This bank | Percentile | Peer range, middle 90% | Peer median |
|---|---|---|---|---|
| Total assets | $21.2B | 44% | $24.6B | |
| Loans | $13.6B | 33% | $20.6B | |
| Deposits | $18.1B | 44% | $21.1B | |
| Return on assets | 1.41% | 67% | 1.04% | |
| Net interest margin | 3.71% | 89% | 3.31% | |
| Efficiency ratio | 58.8% | 56% | 51.5% | |
| Equity to assets | 13.30% | 78% | 12.41% | |
| Loans to deposits | 75% | 11% | 85% |
Growth
Total assets grew 2.5% a year over the last 5 years and 19.5% a year over 10 years, including 4 acquisitions in the last 10 years.
Acquisitions
| Closed | Acquired bank | Assets at acquisition |
|---|---|---|
| Sep 2025 | HomeStreet Bank Seattle, WA | $7.6B |
| Aug 2019 | Rabobank, National Association Roseville, CA | $13.2B |
| Jun 2018 | Scott Valley Bank Yreka, CA | $683M |
| Oct 2016 | California Republic Bank Irvine, CA | $2.2B |
Where they operate
167 branches in 46 counties.
Largest markets by deposits
| County | Deposits | Market share | Rank |
|---|---|---|---|
| Contra Costa County, CA | $3.2B | 6.2% | 5 of 31 |
| Orange County, CA | $1.6B | 1.0% | 17 of 73 |
| San Luis Obispo County, CA | $1.5B | 17.0% | 2 of 14 |
| Santa Barbara County, CA | $1.1B | 7.6% | 6 of 20 |
| King County, WA | $1.1B | 1.0% | 11 of 38 |
| Monterey County, CA | $1.0B | 8.8% | 4 of 13 |
Deposits by branch from the FDIC Summary of Deposits, June 2026. Rank among all banks with branches in that county.
Branch history since 2016
Net gain of 136 branches since 2016 (31 to 167, +438.7%). 9 opened, 172 acquired, 45 closed or sold.
| Period | What happened | Opened or acquired | Closed or sold | Net change | Branches at end |
|---|---|---|---|---|---|
| Start of 2016 | Starting point | 31 | |||
| 2016 | Acquired California Republic Bank | 5 | 0 | +5 | 36 |
| 2017 | Closed Sacramento | 0 | 1 | −1 | 35 |
| 2018 | Acquired Scott Valley BankClosed Portland | 11 | 1 | +10 | 45 |
| 2019 | Acquired Rabobank, National Association | 102 | 0 | +102 | 147 |
| 2020 | Closed 14 in 2 states | 0 | 14 | −14 | 133 |
| 2021 | Closed 17 in California | 0 | 17 | −17 | 116 |
| 2022 | Opened Beverly Hills and SonomaClosed Beverly Hills and Sonoma | 2 | 2 | 0 | 116 |
| 2023 | Opened Cathedral City and IndioClosed 5 in California | 2 | 5 | −3 | 113 |
| 2024 | Opened Palm Desert and ReddingClosed Palm Desert and Redding | 2 | 2 | 0 | 113 |
| 2025 | Acquired HomeStreet BankOpened Santa Rosa, closed Capitola and Santa Rosa | 55 | 2 | +53 | 166 |
| 2026 through Q2 | Opened Aiea and ModestoClosed Modesto | 2 | 1 | +1 | 167 |
Balance sheet and earnings
Loans by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Multifamily | 37% | 8% | |
| 1-4 family residential | 31% | 30% | |
| Commercial real estate | 15% | 32% | |
| Consumer | 10% | 1% | |
| Business (C&I) | 3% | 11% | |
| Construction and land | 3% | 3% | |
| Other | 1% | 14% |
Deposits by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Other interest-bearing | 54% | 54% | |
| Noninterest-bearing | 36% | 25% | |
| Time deposits | 11% | 20% |
Brokered deposits are 0.0% of deposits (peers 9.1%).
Return on assets
Trailing four quarters, with the peer median.
Credit and capital
| This bank | Peer median | |
|---|---|---|
| Noncurrent loans | 0.39% | 0.52% |
| Net charge-offs, annualized | 0.11% | 0.04% |
| Reserves to loans | 1.12% | 1.05% |
| Leverage ratio | 9.38% | 10.82% |
Noncurrent loans exclude government-guaranteed portions.
Related banks
Similar size in California
Largest competitors in Contra Costa County, CA
Figures as of June 30, 2026 from the bank's Call Report, FDIC structure and branch data, and the Federal Reserve. Short link: bankingstats.com/banks/mechanics-bank-walnut-creek-ca