Pioneer Square · Seattle
Verified Data Updated May 2026Jackson Square
121 S Jackson St
Jackson Square: Key Facts
Profile by Jeff Reynolds · Compass Real Estate · Real estate since 2002, condo focus since 2005
Live Listings at Jackson Square
See what's for sale at Jackson Square.
Current inventory, pricing and photos are available on Jeff's MLS-connected live search.
Get new-listing alerts for Jackson Square
New listings and price changes at Jackson Square, emailed to you the day they happen. A building-level watch only Jeff runs. No account needed.
You are on the list.
New listings and price changes at Jackson Square will land in your inbox. No account needed, unsubscribe anytime.
Direct from Jeff Reynolds, Compass Real Estate. No spam, no portals, unsubscribe anytime.
About Jackson Square
Jackson Square is a Mid-Rise building in Pioneer Square, Seattle. Built in 1902 with 7 residences.
Jackson Square sits in Seattle’s historic district, steps from Lumen Field, T-Mobile Park, and the Elliott Bay waterfront.
Building Details
| Address | 121 S Jackson St |
| Neighborhood | Pioneer Square, Seattle |
| Year Built | 1902 |
| Total Units | 7 |
| Type | Mid-Rise |
Jackson Square is positioned walking distance to downtown, the stadium district, and the Pioneer Square tech cluster, with light rail at Pioneer Square Station and major bus corridors.
Frequently Asked Questions
Where is Jackson Square located in Seattle?
Jackson Square is located in Pioneer Square, Seattle at 121 S Jackson St. The building is positioned in Seattle’s historic district, steps from Lumen Field, T-Mobile Park, and the Elliott Bay waterfront.
How many units does Jackson Square have?
Jackson Square has 7 units in a mid-rise format. The building was completed in 1902. Contact Jeff Reynolds for current unit availability, recent comparable sales, and listing data at Jackson Square.
What year was Jackson Square built?
Jackson Square was built in 1902, making it about 124 years old. Buildings of this vintage are at or approaching major capital expenditure cycles for systems like roofs, elevators, plumbing, and facade components. A strong reserve fund and current reserve study are essential safeguards for buyers in buildings of this age.
Authority Pathways
Next Research Steps for Jackson Square
Follow the verified building record into the related guides, comparison tools, and neighborhood context buyers use before making an offer.
Authority Hub
Seattle Condo Authority
See how Jackson Square fits into the broader Seattle Condo Authority research system.
Registry
Building Registry
Compare building age, unit count, HOA signals, and neighborhood context across the registry.
Neighborhood
Pioneer Square Guide
Review nearby buildings, lifestyle context, and buyer tradeoffs in Pioneer Square.
Compare
Compare Buildings
Compare Jackson Square against other condo buildings side by side.
Buyer Resource
Seattle Condo Buyer Guide
Move from building research into offer strategy, resale certificate review, and closing logistics.
More in Pioneer Square
Nearby Buildings
The Building Check
Get Jeff's read on Jackson Square before you offer
HOA financial health, reserve funding, special-assessment risk, rental caps, and honest resale outlook. Jeff evaluates the building, not just the listing, the same way he has for 24 years and 500+ transactions.
Free, specific to Jackson Square, and yours whether or not we ever work together.
Send me the Jackson Square Building Check
Request received.
Jeff will put together his read on Jackson Square and send it to your inbox shortly.
Direct from Jeff Reynolds, Compass Real Estate. No spam, no portals, unsubscribe anytime.
Jeff Reynolds
Seattle Condo Specialist · Compass Real Estate · Real Estate Since 2002
Jeff Reynolds began his real estate career in July 2002 and has focused on Seattle-area condominiums since 2005. His career includes 500+ transactions. Seattle Condo Authority publishes 210+ building profiles to support buyer and seller decisions. Check each profile for its sources, review date, and information that still needs confirmation. Have a question about Jackson Square?
Start with your goals
What would you like help with?
Buying, selling, or still exploring? Start with your goals.
Allow about six minutes for buyer or seller discovery. Jeff reviews your answers before arranging a conversation.
Buying and selling, or just exploring? Start with the 90-second introduction.
Need help getting started? Call 206-794-1118 or email Jeff.