Mobile home parks in Washington County, Oregon
41 registered parks with 4,274 spaces. Every park below has its own page.
Buying instead? See the Washington County park market →
All Washington County · Beaverton (10) · Cornelius (6) · Forest Grove (3) · Hillsboro (10) · Sherwood (4) · Tigard (6) · Tualatin (2)
- 41Registered parks
- 4,274Total spaces
- 86Median park size
- 49Vacant spaces reported
41 registered parks hold 4,274 spaces in Washington County, Oregon. 17 of 41 (41%) report at least one open space, per the July 2026 registry. 3 of 41 run their own regulated public water system rather than a city utility, per EPA records. For scale, HUD's FY 2026 fair market rent for a two-bedroom rental in Washington County is $1,922/mo — the area benchmark, not any specific park's lot rent.
Free tools
- Park value & profitability estimator: what the park earns and what it's worth, at the cap rate you pick.
- Rent increase calculator: the 2026 Oregon rules applied to your park.
- Oregon's maximum rent increase for 2027: the 6% park cap, the September 30 publication date, and the 90-day notice deadline for a January 1 increase.
- RUBS calculator: split one master-meter water bill across your 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.
Source: Oregon Housing and Community Services manufactured dwelling park registry (mdpcr.hcs.oregon.gov), as of July 19, 2026. Counts come from the state's registry and can lag real life. See something out of date? Tell us, or claim the page.