Mattress disposal laws in Seattle: how the rules actually work

The short answer

Nobody is going to fine you for owning an old mattress. What people get in trouble for is how and when they put it out, and in Seattle there is a third failure mode that catches more people than either: the mattress never makes it out of the house at all.

Three things to understand before you do anything.

• Mattress disposal here is governed locally, not by one statewide take-back scheme you can look up. What applies to you comes from your city or county solid-waste program, and from your building if you rent.
• This is not one jurisdiction. Seattle proper, Shoreline, Burien, White Center and unincorporated King County, and then the whole Eastside — Bellevue, Kirkland, Redmond, Issaquah, Renton, Sammamish, Mercer Island — each run their own collection rules. Somebody in Ballard and somebody in Kirkland genuinely have different answers.
• Mattresses are usually handled as their own category, separate from other bulky items, because they wreck compaction equipment.

The flat alternative, if you would rather not navigate any of it: twin $82, full $94, queen $103, king or Cal king $114, box spring $92, mattress and box spring set $143. Minimum visit $95.

How to find the rule that actually applies to you

Do not go by what your neighbor did, and do not go by an article — including this one — for the specifics. Go to the source: your own city's current bulky-item or solid-waste page. In Seattle proper that is Seattle Public Utilities; on the Eastside it is your own city's utility page, not King County's.

Find four things and write them down:

• Does the program take mattresses at all, and are they counted separately from other bulky items?
• Do you have to schedule it in advance, and how far ahead?
• What is the set-out window — how early can it go out, and how late is it still your problem?
• Is wrapping asked for or required?

If you rent, there is a fifth question, and in this city it is usually the one that matters: what your building allows. A large share of Seattle mattress problems are not municipal problems at all. They are Capitol Hill courtyard-building problems, or Ballard six-over-one problems, where the dumpster enclosure is posted against bulky items and the charge for ignoring that comes out of a deposit.

Penalties and schedules change. Check the current page rather than trusting a figure you read somewhere.

Why a mattress must never spend a night outside here

This is the Seattle-specific part, and it is the one people underestimate.

From October through June this city is wet — not dramatic, not stormy, just persistently, patiently wet, day after day. A mattress set out on a porch or against a carport post to wait three days for a scheduled collection does not stay a mattress. It absorbs water, doubles in weight, starts to smell within a week, and grows mold on the underside where it meets the deck boards.

Three consequences follow from that.

• A soaked mattress is often refused. It is heavier than the crew expects and it is a sanitation issue. Refused means it is still yours, and now it is worse.
• It stops being donatable the moment it gets damp, which closes off the route most Seattle households want to try first.
• A covered porch is not dry. Nine months of ambient damp under a Craftsman porch roof will still do it. Anything soft stored out there — mattresses, cushions, rugs, upholstered chairs — is on a clock.

Whatever route you take, line the dates up so the mattress goes from the bedroom to gone without a stopover outdoors.

The reuse instinct, and exactly where it stops

Seattle tries to give things away first. That is a genuinely good instinct and it works well for most furniture — the Buy Nothing groups here are unusually active, and a decent dresser or a bookcase posted on a Wallingford or Beacon Hill group is often gone the same evening.

Mattresses are the exception, and it is worth knowing that before you spend two weeks on it.

Most donation programs will not accept a used mattress at all, for hygiene and liability reasons. Buy Nothing posts for mattresses sit unanswered far longer than posts for anything else. And the pickup that does eventually get arranged frequently falls through at the door, because the person who said yes arrives in a Subaru, sees the stairs, and leaves.

Try it if you want to — post it dry, post it early, be honest about its age. But give it a deadline. The failure mode is a mattress leaned against a wall in the hallway for six weeks while three separate people say they will come on Saturday.

Stairs, grade, and why the mattress rarely reaches the curb

The physical problem in Seattle is not the last mile. It is the last forty feet.

A queen mattress is floppy, heavy and just short of unmanageable for one person. Now put it in the actual housing stock here. A 1912 Craftsman in Wallingford or Mount Baker has a narrow stair run with a tight turn at the landing and a low ceiling above it — turn-of-century stairs were not built for a pillow-top queen. Below that there is often a real basement with an even tighter set of stairs down to it, which is exactly where the old mattress went to live when the new one arrived.

Then there is the outside. Huge numbers of Seattle houses sit well above or below the sidewalk, with a long exterior stair run through a retaining wall to get from the front door to street level. On Queen Anne, Magnolia, Beacon Hill, Madrona or the steeper parts of West Seattle, "take it to the curb" can mean a flight of exterior stairs in the rain before the curb is even in sight.

This is the point where most self-service plans quietly die. Whoever moves the mattress needs two people, dry hands and a plan for the turn at the landing — not a good intention and a Saturday morning.

The bed bug question

If the mattress has or may have bed bugs, one rule outranks every ordinance: bag it in the room, before it moves.

Seal it where it sits, then carry it out. Dragging an unwrapped infested mattress down a Capitol Hill building's shared stairwell, through a lobby, or into one of the small elevators in an older First Hill or Belltown building spreads the problem along the entire route. Buildings here take that extremely seriously, and rightly — a one-unit issue becomes a building-wide treatment.

Tell whoever is collecting it. It changes how it is handled, not what it costs. A queen is $103 either way.

And do not put an infested mattress at the curb unwrapped for someone to take. In a city where people genuinely do pick things up off the parking strip, that is how it travels.

Taking it to a transfer station yourself

Legitimate, and sometimes the cheapest route on paper. Check the current gate rate, the hours, and whether the facility accepts mattresses from residential customers before you load anything — rates and rules change, and weekend queues at the city and county transfer stations are real.

Four practical notes.

• A queen does not fit in a sedan and a box spring does not bend. This is a pickup or a rented van.
• Tie it down properly. An unsecured mattress coming off a vehicle on I-5, the West Seattle Bridge or 520 is genuinely dangerous and it is citable.
• Go on a dry day if you can. Wrestling a wet mattress into a truck bed in February drizzle is its own punishment.
• Add it up honestly: van rental or fuel, the gate fee, an hour or two of queueing, and two people — against $103 for a queen with the carry-out from wherever it currently sits included.

The flat-price route

A queen and its box spring priced separately come to $103 + $92 = $195; taken as a set it is $143. A whole bed — the set plus a standard frame — is $143 + $68 = $211.

Those prices are published before anyone is dispatched, and they include the carry-out from any floor. No stair charge, which in a city built on hills and exterior stair runs is the part that actually matters. Nothing sits on your porch soaking up nine months of weather while it waits for a collection date.

The one rule that covers all of it

If you remember one line from this page: in Seattle, a mattress should never spend a night outdoors.

It gets wet, it gets heavy, it stops being donatable, it starts to smell, and it turns from a collection item into a code-enforcement item on your own parking strip. Pick whichever route suits you — your city's scheduled collection on the correct day, a transfer-station run you make yourself, or a flat-price pickup — and then line the timing up so the mattress leaves the building and keeps going.

Frequently asked questions