Walnut Creek Mobile Estates: mobile home park in Diamond Bar, 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 147-space mobile home park in Diamond Bar, CA. Everyday shopping is within a couple of miles.
Flood risk looks favorable here: the park sits in zone X, clear of FEMA's special hazard designation. 100% of homes in the area report broadband at 100/20 Mbps or faster — one less worry for remote work.
There's a county-level rent cap on the books in Los Angeles County; whether it covers this address depends on incorporation, which the registry alone can't answer. 147 spaces — big enough that billing by spreadsheet starts to show its cracks.
- Size
- 147 spaces · 101th largest of 556 in Los Angeles County (median 50)
- Size vs the state
- Larger than about 80% of California's registered parks
- Rent increases
- 75% CPI, 8% Cap (Los Angeles County ordinance — unincorporated areas only) · read it
- Rent nearby
- 2-bedroom fair market rent $2,601/mo (HUD FY 2026)
- Flood zone
- N/A — outside the mapped floodplain
- Wildfire risk
- Among the highest-risk counties in the U.S. (USFS, county-wide)
- Tornadoes
- 50 recorded in Los Angeles County since 1950, strongest F2 (NOAA)
- Nearest
- Grocery 0.5 mi · pharmacy 2.1 mi · clinic 0.9 mi
- School & ER
- Walnut Elementary 0.2 mi · Emanate Health Inter-Community Hospital (ER) 6.3 mi
- Internet
- 100% of homes at 100/20 Mbps · fiber 32% · gigabit 32%
- Neighborhood
- Median rent $2,868/mo · median income $125,000 · 4% 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
Diamond Bar sits about 7 miles southwest of Pomona (about 150,000 people). 106 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 Walnut Creek Mobile Estates have?
Walnut Creek Mobile Estates has 147 total spaces per the California park registry (as of August 24, 2026).
Is this Walnut Creek Mobile Estates's official website or phone number?
No. This is Walnut Creek Mobile Estates'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 Walnut Creek Mobile Estates?
20739 Lycoming St, Diamond Bar, California 91789, in Los Angeles County.
How much is lot rent at Walnut Creek Mobile Estates?
Walnut Creek Mobile Estates 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 Los Angeles County is $2,601/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 Walnut Creek Mobile Estates?
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 Los Angeles County
| Park | Distance | Spaces |
|---|---|---|
| Diamond Bar Estates | ~0.6 mi | 133 |
| Friendly Village West Covina MH Community | ~1.6 mi | 157 |
| Hi Lea Village Mobile Home Park | ~2.1 mi | 188 |
| Rowland Heights Mobile Estates | ~2.6 mi | 327 |
| Rancho la Seda | ~2.7 mi | 104 |
Free tools
- Park value & profitability estimator: what a 147-space park earns and what it's worth, at the cap rate you pick.
- Rent increase calculator: the 2026 California cap applied to a 147-space park.
- RUBS calculator: split one master-meter water bill across 147 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 | 4392 |
|---|---|
| Registered with | The California Department of Housing and Community Development |
| Listed as | WALNUT CREEK MOBILE ESTATES |
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/los-angeles/walnut-creek-mobile-estates