The Willows at Bethel Island: mobile home park in Bethel Island, California
Unofficial page — independent directory built from the California state registry, updated August 2026.
Run this park? Correct anything on this page free — no card, no account.
A 172-space mobile home park in Bethel Island, CA. It sits in FEMA flood zone AE, a special flood hazard area — worth factoring into insurance and financing. The nearest everyday shopping is a few miles out.
Contra Costa caps mobilehome rent increases in Contra Costa County's unincorporated areas — this park may or may not sit inside that boundary, so it's a question for the county. The surrounding town is well wired: about 100% of homes can reach 100/20 Mbps. At 172 spaces, this mobilehome park is a fair-sized operation to run water and rent billing across.
- Size
- 172 spaces · 11th largest of 61 in Contra Costa County (median 67)
- Size vs the state
- Larger than about 86% of California's registered parks
- Rent increases
- 75% CPI, 6% Cap (Contra Costa County ordinance — unincorporated areas only) · read it
- Rent nearby
- 2-bedroom fair market rent $2,912/mo (HUD FY 2026)
- Flood zone
- AE — special flood hazard area; flood insurance generally required
- Wildfire risk
- Higher than 92% of U.S. counties (USFS, county-wide)
- Tornadoes
- 5 recorded in Contra Costa County since 1950, strongest EF1 (NOAA)
- Nearest
- Grocery 5.5 mi · pharmacy 7.2 mi · clinic 8.2 mi
- School & ER
- Summer Lake Elementary 3.7 mi · Kaiser Foundation Hospital - Antioch (ER) 10 mi
- Internet
- 100% of homes at 100/20 Mbps · fiber 0% · gigabit 4%
- Neighborhood
- Median rent $1,390/mo · median income $78,000 · 33% mobile homes
Distances are straight-line, so the drive is longer. Internet and neighborhood figures describe the surrounding town — and the rent benchmark, wildfire rank, and tornado count the wider county — not this park’s own lots. The fair market rent is apartment-style rent (HUD’s area benchmark), not this park’s lot rent. Rent limits are not legal advice.
Looking for the office number? Their Google Maps listing may have it →
Worth knowing
Bethel Island is a rural community about 20 miles west of Stockton (about 320,000 people). 26 other registered parks lie within about 10 miles.
For residents
- Water billing: if your park submeters water, California bills it at the utility's rate with combined service and admin fees capped (AB 604) — no markup on the water itself. Check the math free with the water submeter calculator, or read the California water-billing guide.
- Paying rent: ask the park office how they take payment. Parks that run on Lot Sidekick hand residents clear, itemized rent and water bills.
- Thinking about moving here? What to ask a park before you rent a lot, and what lot rent covers and how it goes up.
Common questions
How many spaces does The Willows at Bethel Island have?
The Willows at Bethel Island has 172 total spaces per the California park registry (as of August 24, 2026).
Is this The Willows at Bethel Island's official website or phone number?
No. This is The Willows at Bethel Island's page in the Lot Sidekick park directory, built from the state registry. We're independent of the park and can't take messages for it. The park office hasn't added a public contact here yet; if you own the park, claiming the page (free) lets you add one.
Where is The Willows at Bethel Island?
3656 Willow Rd, Bethel Island, California 94511, in Contra Costa County.
How much is lot rent at The Willows at Bethel Island?
The Willows at Bethel Island doesn't publish its lot rent anywhere we could find, and we won't guess at a figure. Call the park office to ask. For scale: HUD's FY 2026 fair market rent for a 2-bedroom rental around Contra Costa County is $2,912/mo — that's apartment-style rent for the area, and lot rent (the ground under a home you own) usually runs well below it. If you run this park, you can add your real lot rent to this page for free.
How much can lot rent go up at The Willows at Bethel Island?
California has no statewide cap on space-rent increases, but the Mobilehome Residency Law requires 90 days' written notice (Civil Code §798.30), and many California cities add local rent-stabilization ordinances — check your city before assuming there's no cap.
Nearby parks in Contra Costa County
| Park | Distance | Spaces |
|---|---|---|
| Russo's Marina | ~0.6 mi | 18 |
| Santiago Island Village | ~1.3 mi | 145 |
| Flamingo MHP | ~1.5 mi | 62 |
| Frank's Marina | ~1.5 mi | 27 |
| Marina Mobile Manor | ~2 mi | 24 |
Free tools
- Park value & profitability estimator: what a 172-space park earns and what it's worth, at the cap rate you pick.
- Rent increase calculator: the 2026 California cap applied to a 172-space park.
- RUBS calculator: split one master-meter water bill across 172 lots so the pennies add up exactly.
- Water submeter calculator: two meter reads in, an at-cost tenant bill out.
- Notice generator: a clean, printable rent-increase notice with the dates filled in.
- Rent receipt generator: a printable receipt for a cash, check, or money-order payment — two copies to a sheet.
- Prorated rent calculator: the exact first-month charge when someone moves in mid-cycle.
Registry record
| State registry ID | 6229 |
|---|---|
| Registered with | The California Department of Housing and Community Development |
| Listed as | THE WILLOWS AT BETHEL ISLAND |
Data from official state registry that may be out of date.
Source: California Department of Housing and Community Development, Permit to Operate registry (gis.hcd.ca.gov), as of August 24, 2026. Counts come from the state's registry and can lag real life. See something out of date? Tell us, or claim the page.
https://lotsidekick.com/parks/california/contra-costa/the-willows-at-bethel-island