Roommate Clause
in Your Lease
What it actually means, what Washington law says, what's specific to Seattle — and exactly what to do. In plain English.
Quick Summary — What You Need to Know
- Washington has no roommate statute — your lease's roommate clause is the entire rulebook, and courts here enforce it as written.
- Nearly every Seattle lease is joint and several, meaning if your roommate skips out you owe 100% of the rent.
- Seattle caps your security deposit plus nonrefundable move-in fees at one month's rent, and you can pay it in installments.
- Your landlord doesn't have to approve a new roommate unless the lease says consent won't be unreasonably withheld.
- Moving someone in without approval is a lease breach; Washington's standard cure notice is 10 days to comply or vacate.
Understanding the Roommate Clause
The roommate clause is the part of your rental agreement that decides who's legally allowed to live in the unit and who's on the hook for rent. In Seattle leases it's usually buried under a heading like Occupancy, Guests, or Additional Occupants.
It matters in two moments: when someone wants in, and when someone wants out. Only people named on the lease are tenants — everyone else is a guest, and a guest has no right to stay.
What the clause actually controls
- Who can be added, and what approval the leasing office has to give first
- How many nights a guest can stay before they count as an occupant (often 10 to 14)
- Whether rent liability is joint and several or split per person
- Screening fees for a new roommate, typically $40-$65 each in Seattle
- What happens to the deposit when one roommate leaves mid-lease
Plain English Version
Your lease is one bar tab with everyone's name on it, not separate checks. If a roommate walks out without paying, the property manager hands the whole tab to whoever is still sitting at the table.
Washington Law on Roommate Clause
Washington has no roommate statute. The Residential Landlord-Tenant Act (RCW 59.18) governs the landlord-tenant relationship, not how co-tenants divide rent between themselves — so the lease language wins every time.
That makes joint and several liability fully enforceable here. Your property manager can chase any one tenant for the entire rent, and it's on you to recover your ex-roommate's share afterward in small claims.
Where state law does step in
The deposit is one place. Deductions have to be itemized in writing and refunded within the deadline in RCW 59.18.280 — check the current day count before you rely on it, since Washington has amended that section. The refund belongs to the tenancy, not to each roommate separately.
Adding an unapproved occupant is a lease violation, and the standard notice in Washington is 10 days to comply or vacate (RCW 59.12.030). Cure it inside that window and the tenancy continues.
Since 2021, Washington has also required just cause to end most month-to-month tenancies, so a landlord can't quietly non-renew you for asking about a roommate swap. A 2021 state law separately barred cities from capping how many unrelated adults share a home — but that limits city zoning, not your landlord's lease.
Washington Tenant Protections
Every deposit deduction must come with a written itemization, and unexplained lump-sum charges aren't enforceable.
Most month-to-month tenancies can only be ended for a just cause spelled out in state law.
A survivor of domestic violence can end their part of the tenancy early, with the required documentation, and stop owing rent going forward.
What's Specific to Seattle
Seattle has no ordinance written specifically about roommate clauses — your lease still decides who moves in. What the city does regulate hard is the money and the screening around it, and those rules beat the state floor.
Seattle caps your security deposit plus any nonrefundable move-in fees at one month's rent, and you can insist on paying it in installments. The city's Fair Chance Housing rules also sharply restrict using criminal history to screen applicants, so a leasing office can't bounce your replacement roommate over an old conviction.
Market reality drives the rest: a two-bedroom in Capitol Hill, Ballard, or Fremont runs roughly $2,400-$3,200, which is why roommate turnover here is nonstop. Seattle's Just Cause Eviction Ordinance (SMC 22.206.160) means you can't be pushed out simply for asking to swap one, and the Renting in Seattle helpline at (206) 684-5700 will read your clause with you for free.
Red Flags to Watch Out For
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Fee stacked on top of rent
A recurring $50-$150 monthly extra-occupant charge for someone already approved on the lease is a rent increase in disguise. Make them justify it in writing.
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Approval left totally open-ended
Language giving the landlord sole and absolute discretion with no reasonableness standard means they can refuse every candidate forever, and no Washington statute overrides that.
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Second full deposit for a swap
Seattle's cap on deposits plus nonrefundable move-in fees is one month's rent for the tenancy, so a fresh full deposit at every roommate change deserves a challenge.
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Guest limit under a week
A clause capping visitors at 3 or 4 nights turns a partner staying over into a technical breach and hands the leasing office grounds for a notice.
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No release for the departing tenant
Without a signed release, the roommate who left stays liable for rent and their name blocks the deposit refund until the entire tenancy ends.
Your Rights as a Seattle Tenant
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No eviction without just cause
Ending most Seattle tenancies requires a cause listed in the ordinance and state law, and wanting to replace a roommate isn't one of them.
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Screening fees limited to real costs
Washington restricts application charges to the actual cost of the report and requires the screening criteria be given to you in writing first.
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Written itemization of deductions
You're owed a line-by-line breakdown of every charge taken from the deposit; a bare cleaning and damages total with no detail isn't enforceable.
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Early exit for abuse survivors
State law lets a survivor of domestic violence end their portion of the rental agreement mid-lease with proper documentation, without owing the remaining rent.
What To Do — Step by Step
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1
Find the occupancy language first
Search your lease PDF for occupant, guest, and assignment — the roommate rules are usually scattered across two or three separate sections.
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2
Check whether liability is joint
Hunt for the phrase jointly and severally. Those words mean the landlord can bill you for 100% of the rent if anyone bails.
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3
Ask in writing, never verbally
Email the leasing office the candidate's name and target move-in date, and request a written decision within 10 business days.
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4
Get every fee quoted upfront
Ask for the screening fee, any deposit change, and any rent adjustment in one written quote — Seattle's one month's rent move-in cap still applies.
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5
Sign a real lease amendment
A verbal yes protects nobody. Insist on a signed addendum that names the incoming tenant and formally releases the departing one.
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6
Call Renting in Seattle if stalled
SDCI's tenant line at (206) 684-5700 reviews lease clauses and city rules for free, before you sign anything or move a person in.