Item No.  9a_supp 
Meeting Date:   February 26, 2019 

Seattle-Tacoma International Airport (Sea-Tac) 
All Gender Restroom Plan 
Port of Seattle Working Group 


1

BACKGROUND 
All Gender Restrooms are restrooms that any person can use
regardless of their gender 
o Benefits a variety of people including: 
o Transgender and gender non-confirming individuals 
o Caretakers and parents who assist someone of the opposite
gender 
o Creates a safe space for employees and community members to use
the restrooms as it removes stigma or rationale for judgment as to
which gendered facilities to use 

2

BACKGROUND 
Port Commission adopted Motion 2018-08 to develop a Sea-Tac
All Gender restroom plan to ensure that all existing and future
single-occupant restrooms at Sea-Tac, beyond meeting the
requirements set by the Washington State Building Code are
designated for use by any person, regardless of gender. 
o Working Group established and met regularly 
o Focus Groups held 
o Layout study completed 
o Cost Analysis completed 
3

Potential Locations
for All Gender
Restrooms 

Restroom Upgrade, Concourses B, C, and D 
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DESIGN 

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Multi-user: Stalls, Urinal,
Compartment Design                                            Gendered with additional
open washing                single-user restrooms 
Layout options for All Gender Restrooms

Recommended Design for All Gender Restrooms :
Compartment

Traditional                                      Compartment 



Traditional vs. Compartment Design

Pros                                       Cons 
Most flexibility for future conversion       Limited space for lines 
Individual compartments can be           Added sink and towel dispensers 
closed for repairs                          Require stall availability indicator 
Additional privacy/security                  Additional cost to build 

Requires Further Study 
Throughput 
Maintainability & increased janitorial needs 
Safety 
Ability to add urinal room 
Ability to make all compartments ambulatory
Compartment Design Analysis

What we can do
today 
(above and beyond
today's code) 

All Gender Compartment   1 
Service Animal Relief Area   1          Beginning of Concourse D 
Nursing Room              1 
Adult Changing Table        1

What we can do
to prepare 
(for when code is
updated in the
future) 

Gates B3, C2/3, D3 
If approved by FAA, the restroom renovation project is 
scheduled to be completed Q4 2023

Multi-user: Stalls, Urinal,
open hand washing station 
What we can do at
new sites 
("Greenfield"
Development) 
COMMON USE SINKS 
Very efficient/ high
throughput 
Improved
maintainability (space
for maintenance chase
behind plumbing)

SIGNAGE 

13

Recommended Signage for All Gender Restrooms

QUESTIONS? 

15

APPENDIX 

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PORT OF SEATTLE WORKING GROUP 
Representatives from the following: 
1.  Aviation Operations 
2.  Aviation Capital Programs 
3.  Aviation Project Management Group 
4.  Aviation Maintenance 
5.  Aviation Facilities and Infrastructure 
6.  Airport Building Department 
7.  Aviation Customer Service Department 
8.  Commission Office 
9.  Development and Diversity Council 
10. Public Affairs 
11. Employee Resource Groups (Port-Wide Pride, Transgender Initiative) 
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Concourse                      Concourse                        Concourse 
B        Fixture Counts                 C        Fixture Counts                 D        Fixture Counts 
Code                                        Code                                         Code
Requirements      W: 19    M: 10     F: 1      Requirements       W: 18    M: 10     F: 1       Requirements        W: 13    M: 7     F: 1 
Existing              W: 19    M: 21      F: 2       Existing               W: 32    M: 30      F: 1        Existing                W: 25     M: 25     F: 3 
Above Code        W: 0     M: 11     F: 1     Above Code        W: 14    M: 20     F: 0       Above Code         W: 12    M: 18    F: 2 
Traditional          W: 20     M: 18      F: 4      Traditional          W: 31    M: 20     F: 10      Traditional           W: 27     M: 22     F: 5 
Compartment      W: 29    M: 24     F: 4     Compartment      W: 37   M: 23    F: 3      Compartment       W: 30    M: 26    F: 6 
Sea-Tac is currently meeting the code requirements for
Concourses B, C, and D. 

Code Requirements, Existing Fixtures and Layout Comparison 
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AIRPORT RESTROOM REQUIREMENTS 
Building codes require that public spaces have a minimum
number of fixtures (toilets, sinks, urinals) available 
Code also requires a specific number of those fixtures be
designated male, female, family and ADA 
There may be an opportunity to provide additional fixtures
available to all users, regardless of gender identity  after 
the code minimums have been met

RESTROOM CRITERIA 
When designing Airport restrooms there are many
objectives that the Port is trying to achieve: 
o Accessibility 
oMaintainability 
oPassenger Experience 
oPassenger Throughput (efficiency) 
oSafety & Security 
oSustainability

Concourse B        Potential Location for
All Gender Restroom 
21

Potential Location for
All Gender Restroom 


Concourse C 
22

Potential Location for
All Gender Restroom 


Concourse D 
23

Traditional                                      Compartment 




Number of fixtures at this
location                           Gate B3 
Existing               20 
Traditional            14 
Compartment      18

Traditional                     Compartment                         Mix 




Number of fixtures at this
location                     Gates C 2/3 
Existing               21 
Traditional            36 
Compartment      43

Traditional                                      Compartment 




Number of fixtures at this
location                          Gate D3 
Existing              10 
Traditional            6 
Compartment      9

What we can do today       What we can do to prepare      What we do at new sites
(above and beyond code):      for future (when code is         (greenfield development): 
updated): 

Summary

DISPLAY REQUIREMENTS 
Iconography 
Must display verbiage "Restroom" 
Must display the symbol of
accessibility if restroom is ADA
compliant 
Braille translation of display verbiage 
Subtitle description is optional but
helpful 
San Diego International Airport 
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ICONS: ALL GENDER SINGLE-USER 


1           2           3             4 
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ICONS: FAMILY & 
MULTI -USER ALL GENDER 

1                  2                 3 

4                    5               30

TITLES 
Restroom 
All Gender Restroom 
Gender Inclusive Restroom 
Gender Neutral Restroom 
Inclusive Restroom 
Universal Restroom 
All User Restroom 
Unisex Restroom 
Water Closet (WC) 
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DESCRIPTION 
No description 
All people may use this restroom 
o  All people and families may use this
restroom 
All users may use this restroom 
o All users and families may use this
restroom 
Anyone can use this restroom 
Anyone can use this restroom, regardless of
gender identity or expression 
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