401 Union St, Seattle: Office and Tenant Fit-Out

Office and Tenant Fit-Out at 401 Union St, Seattle was permitted on February 6, 2025 with a stated construction value of $10M to $25M. Construct blanket permit tenant improvements for Russell Investments on floors 17 18 and portion of 19 of existing commercial building per plan. Builtie tracks the project's stage, the trades still being bought and the people who decide.
The same four steps, whether the buyer is a builder, a designer, an owner or a company you want to acquire.
The project
| Address | 401 Union St, Seattle |
| Project | Office and Tenant Fit-Out |
| Building type | Commercial |
| Work | Renovation or alteration |
| Permit issued | February 6, 2025 |
| Stated construction value | $10M to $25M |
| Estimated stage | Framing |
| Company named on the permit | Resolved in Builtie |
| Decision makers and contacts | In Builtie |
From the permit: “Construct blanket permit tenant improvements for Russell Investments on floors 17 18 and portion of 19 of existing commercial building per plan”
Which trades are being bought now
The project is with the structure going up. At that stage these trades are inside their award window, the stretch of the build when the builder or general contractor decides who gets the work:
| Trade | Award window |
|---|---|
| Construction Site Security | Before the start to 15% |
| Painting | 5% to 35% |
| Masonry | 10% to 30% |
| Waterproofing | 10% to 35% |
| Roofing | 15% to 35% |
| Windows, Doors and Glazing | 15% to 35% |
| Electrical | 20% to 45% |
| HVAC and Mechanical | 20% to 45% |
| Plumbing | 20% to 45% |
| Fire Protection | 25% to 50% |
What Builtie adds
In Builtie: the decision makers on this project and their verified contacts, the trades already credited on it, the builder's other active permits, and LinkedIn and email outreach that runs while you work.
Other major projects in Seattle
- 10400 East Marginal Way S: Warehouse
- 4000 15th Ave NE: Campus Building Renovation
- 3435 15th Ave W: Commercial Project
- 1555 Airport Way S: Industrial Building Renovation
- 201 Queen Anne Ave N: Office-to-Residential Conversion
All of them: construction projects in Seattle by address. Seattle's feed rarely names the builder: 1.4% of new-build permits carry one. Builtie resolves the company behind a Seattle project from other records, and does not publish a Seattle builder count because it would describe the feed rather than the market.
Plans
Builtie's Starter plan is $79 per seat per month (CAD) for 20 projects; Growth is $99 for 50 projects and adds the LinkedIn and email outreach you run yourself. Opening a project spends one credit, and the decision makers, emails, phones and AI call script inside it are included. Your monthly credits reset at each renewal, and extra credit packs are valid for 30 days. The free trial runs 7 days with 10 projects. Custom, where Builtie's team runs the outreach for you, starts from CAD $1,500 a month on top of a Growth seat.
Frequently asked questions
What is being built at 401 Union St?
Office and Tenant Fit-Out. Construct blanket permit tenant improvements for Russell Investments on floors 17 18 and portion of 19 of existing commercial building per plan
When was the permit issued for 401 Union St?
February 6, 2025, by the City of Seattle.
Who is building 401 Union St?
Builtie resolves the builder or general contractor behind the permit and attaches a verified decision maker.
Which trades does 401 Union St need now?
At its current stage: site security, painting, masonry, waterproofing, roofing, window, door and glazing, electrical, HVAC.
What does Builtie cost?
Starter is $79 per seat per month (CAD) for 20 projects; Growth is $99 for 50 projects and adds LinkedIn and email outreach. There is a 7-day free trial with 10 projects.
