What is the average mobile home park lot rent in King County, WA?

The average monthly mobile home space lease in King County, WA is $840/month, with typical space leases ranging between $610 and $1250/month depending on community amenities, resident age qualifications, and included utilities.

How much are utility hookup and tap connection fees in King County?

In King County, municipal water tap fees average $4,200 - $9,000 (SPU / King County Water Districts), sewer hookup runs $5,000 - $11,000, electrical pedestal connection is $2,000 - $4,400 (Puget Sound Energy / Seattle City Light), and septic installation costs $11,000 - $22,000.

RV LIVING STATUS: RESTRICTED

King County, WA Mobile Home Lot Rent & RV Living Regulations (2026)

Q: Can you legally live in an RV full-time in King County?

In King County, full-time RV dwelling is classified as Restricted. Under King County Code Title 21A, RVs are not recognized as permanent dwellings on single-family lots. Mobile home park tenancies are protected by Washington State's strong Opportunity to Purchase statute.

Official 2026 municipal benchmark report for King County, Washington. Space lease averages, full-time RV residential stay limits, utility hookup tap fees, and state tenant rights.

Average Space Lease

$840 /mo

Typical Range: $610 – $1250

55+ Senior Communities

$890 /mo

Age-restricted parks

All-Age Family Communities

$810 /mo

Standard family parks

Statewide Baseline

$740 /mo

Washington statewide median

⚖️ RV Living Zoning Ordinances & Stay Limits

Under King County Code Title 21A, RVs are not recognized as permanent dwellings on single-family lots. Mobile home park tenancies are protected by Washington State's strong Opportunity to Purchase statute.

Private Land Allowed: No

Max Stay Allowed: 14 Days

ADU Placement: Allowed

Applicable Code: King County Code Title 21A / RCW 59.20 (Manufactured/Mobile Home Landlord-Tenant Act)

⚡ Utility Connection Tap Fees & Infrastructure Costs

Water Tap Connection

$4,200 - $9,000 (SPU / King County Water Districts)

Sewer Hookup Fee

$5,000 - $11,000

Electric Pedestal (50A/200A)

$2,000 - $4,400 (Puget Sound Energy / Seattle City Light)

Septic Installation Cost

$11,000 - $22,000

🛡️ Tenant Rights & Eviction Protections

Statutory space lease notice in King County requires a minimum of 90 days prior to lease termination or rent increase. Rent control protections: None (Market Rate).

State Statute: RCW 59.20.060 (Washington State Manufactured/Mobile Home Landlord-Tenant Act - 3-Year Leases Required)

🌪️ HUD Wind Zone & Climate Profile

HUD Wind Zone: Zone HUD Wind Zone I & Seismic Hazard Zone

Extreme Weather / Heat Alert: High (Summer Prep Required)

Major Urban Hubs: Seattle, Bellevue, Kent, Renton, Federal Way

❓ Frequently Asked Questions for King County

What is the average mobile home lot rent in King County, WA?

In 2026, the average monthly space lease in King County is $840/month. Typical lot rents range from $610 for basic family communities up to $1250 in premium 55+ senior parks with resort amenities.

Is full-time RV living permitted in King County?

Full-time RV living on private land is classified as Restricted in King County. Under King County Code Title 21A, RVs are not recognized as permanent dwellings on single-family lots. Mobile home park tenancies are protected by Washington State's strong Opportunity to Purchase statute.

What are the typical utility hookup costs in King County?

Setting up a manufactured home or RV lot in King County usually entails $4,200 - $9,000 (SPU / King County Water Districts) for water tap connections, $5,000 - $11,000 for sewer hookup, $2,000 - $4,400 (Puget Sound Energy / Seattle City Light) for electrical service hookup, and $11,000 - $22,000 for septic installation.