What is the difference between a floating home and a houseboat in Seattle?

A floating home is a permanent residence built on a float — it stays in one slip and is treated like real property for financing and tax purposes. A houseboat is a motorized vessel that can move; it is classified as personal property and financed differently. Most Seattle listings on Lake Union and Portage Bay are floating homes, not traditional houseboats.

How much does a floating home cost in Seattle?

Seattle floating homes typically range from $400,000 for smaller older floats to over $2 million for newer construction on Lake Union or Portage Bay. In addition to the purchase price, buyers pay monthly moorage (slip) fees ranging from $800 to $2,500+ depending on the marina and float size.

Can you get a conventional mortgage on a Seattle floating home?

Yes — most Seattle floating homes qualify for conventional financing if they meet certain criteria: permanent utility connections, a fixed slip, and classification as real property rather than a vessel. Some lenders specialize in floating home loans. Your RexMont agent can connect you with lenders experienced in this property type.

Where are floating homes located in Seattle?

Seattle's floating home communities are concentrated on Lake Union, Portage Bay, Eastlake, and Westlake. The most popular marinas include Eastlake, Roanoke Reef, Yale Street Landing, and several private docks along the Lake Union shoreline.

What should I know about moorage fees before buying a floating home?

Moorage (slip) fees are a monthly cost on top of your mortgage and typically include water, sewage pump-out, and basic utilities. Fees range from $800 to $2,500+ per month. Some marinas are co-op owned, meaning you buy a share of the marina rather than paying rent — this affects your total monthly cost and long-term ownership structure.

Seattle, WA · Waterfront Living

Seattle floating homes
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Lake Union, Portage Bay, Eastlake, Westlake — Seattle has one of the largest floating home communities in the country. RexMont's specialists know every dock.

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About the market

One of the most unique real estate markets in the Pacific Northwest.

Seattle has approximately 500 floating homes — permanent residences built on floating platforms moored in marinas across Lake Union, Portage Bay, and connected waterways. It is one of the largest floating home communities in the United States, and one of the most coveted.

Inventory is chronically tight. Fewer than 40 floats change hands in a typical year, and the best ones rarely sit on the market for more than a few days. Buyers who succeed in this market come pre-approved, understand moorage structures, and work with an agent who has established relationships at the docks.

RexMont's agents have represented buyers and sellers across Seattle's floating home communities. If you're considering a floating home — whether buying your first float, upgrading, or selling — we can walk you through what to expect.

Where to look

Seattle's floating home communities.

Lake Union

The heart of Seattle's floating home scene. Lake Union has the largest concentration of floating homes in the city, with marinas along both the east and west shores. Proximity to South Lake Union's tech corridor — Amazon, Google, Meta — drives consistent demand from buyers who want walkable waterfront living close to work.

Portage Bay

The quieter, more residential end of the Lake Union waterway. Portage Bay floats tend to sit on co-op docks and attract buyers who want a tight-knit community feel with slightly less boat traffic than central Lake Union. University of Washington is a short bike ride away.

Eastlake

The Eastlake neighborhood runs along the eastern shore of Lake Union and hosts several of Seattle's most desirable floating home docks. Walkable to cafes and restaurants on Eastlake Ave, with downtown Seattle visible across the water. Some of the city's newer floating home construction is concentrated here.

Westlake

The western Lake Union shoreline, closer to South Lake Union and Fremont. Westlake floats offer quick access to the Burke-Gilman Trail and are popular with buyers who commute by bike or kayak. Marina quality varies — your agent should review HOA documents and moorage agreements carefully.

Before you buy

What every floating home buyer needs to know.

Floating homes are not a standard real estate transaction. These are the six things that catch buyers off guard.

Moorage fees are a fixed monthly cost

Budget $800–$2,500/month on top of your mortgage. Fees cover your slip, water, and sewage. Co-op marinas require buying a dock share — factor this into your total purchase cost.

Financing is different but available

Most Seattle floating homes qualify for conventional loans if they're classified as real property (not a vessel). Work with a lender who has done floating home transactions — a standard mortgage broker may not know the requirements.

Insurance is a specialized product

Standard homeowner's insurance doesn't cover floating homes. You'll need a marine dwelling policy. Premiums are higher than land-based homes and vary by marina, age of float, and coverage type.

HOA and marina governance matters

Each marina operates differently. Some are privately owned, some are co-ops, some have strict rules on modifications, short-term rentals, or pet sizes. Review the marina agreement and meeting minutes before making an offer.

Maintenance is more hands-on

The float itself — the structure your home sits on — requires regular inspection and maintenance. Older concrete or wood floats need more attention than newer foam-core construction. Factor in periodic haul-out costs for hull inspections.

Inventory is extremely limited

There are roughly 500 floating homes in Seattle total. Fewer than 30–40 change hands in a typical year. When a float hits the market, it moves fast. Pre-approval and a specialist agent who knows the docks is essential.

Floating homes & houseboats for sale in Seattle

Active NWMLS listings — floating homes and houseboats on Lake Union, Portage Bay, Eastlake, and Westlake. Refreshed hourly.

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Listing data courtesy of NWMLS. Provided for the consumer's personal, non-commercial use.

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Common questions

Seattle floating home FAQ.

What is the difference between a floating home and a houseboat in Seattle?: A floating home is a permanent residence built on a float — it stays in one slip and is treated like real property for financing and tax purposes. A houseboat is a motorized vessel that can move; it's classified as personal property and financed differently. Most Seattle listings on Lake Union and Portage Bay are floating homes.
How much does a floating home cost in Seattle?: Floating homes typically range from $400,000 for smaller older floats to over $2 million for newer Lake Union construction. Monthly moorage fees of $800–$2,500+ are an additional fixed cost on top of your mortgage.
Can you get a conventional mortgage on a Seattle floating home?: Yes — most qualify for conventional financing if they have permanent utility connections, a fixed slip, and are classified as real property. Some lenders specialize in floating home loans. Your RexMont agent can connect you with the right lender.
Are short-term rentals allowed on Seattle floating homes?: It depends on the individual marina agreement and Seattle municipal code. Some docks prohibit Airbnb-style rentals entirely. Always verify marina rules before purchasing if rental income is part of your plan.
How competitive is the Seattle floating home market?: Very. With only 30–40 transactions per year across the entire city, good floats receive multiple offers quickly. Pre-approval, flexibility on closing terms, and an agent who has relationships at the docks makes a significant difference.

Seattle floating homes & houseboats.