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A dedicated Kidder Mathews team to source and negotiate the office, warehouse, and industrial-yard leases supporting the Elliott West and Mouth-of-Duwamish projects — at no cost to the County, with the market knowledge to move fast and the process discipline to clear Council.
The WTD capital program requires multiple leases — office, warehouse, and industrial outdoor storage — in the Duwamish and Interbay corridors to house teams, materials, and equipment through construction and commissioning. The County needs a single, accountable tenant-rep team to run every lease start to finish.
Each tab answers a piece of the assignment: the Space Program we'll deliver, the Market we'll draw on, our Approach and schedule, relevant Experience, the Team, and the Fee (there is no cost to the County). Our formal written proposal accompanies it.
The capital program needs distinct but linked spaces. We'll run them as one coordinated search so timing, geography, and budget stay aligned across every lease — and so the County has a single point of accountability.
Project, engineering, and construction-management staff. Priorities: efficient floor plates, parking ratio, transit access, term flexibility, and a fit-out timeline that supports 2027–28 occupancy.
Covered storage for materials, parts, and equipment. Priorities: clear height, dock & grade loading, power, secure access, and proximity to the two project sites.
Paved, secured laydown for pipe, equipment, and staging — the scarcest and most specialized asset class in the corridor, and a Kidder Mathews specialty.
Sufficient parking for field and office staff and fleet, coordinated across the office and yard sites so crews and vehicles are where the work is.
Office and warehouse are attainable in this market with the right relationships. Secured industrial outdoor storage adjacent to the project sites is the genuine scarcity — very little exists and almost none is openly marketed. Sourcing it is exactly what our industrial and IOS practice does, and it will drive the search strategy.
The search geography maps directly to the two projects: the Duwamish / SODO corridor to the south and the Interbay corridor to the north. Both are among the tightest, most contested industrial submarkets on the West Coast — which is precisely why an owner-relationship-driven search wins.
Schematic — relative positions, not to scale. Search boundaries refined with the County during the strategy phase.
An ~8-acre treatment-station site at S Spokane St & 1st Ave S, anchor of a ~$3.4B CSO program. The long, large program — and where our current availability is deepest. We center the SODO/Duwamish search on this site.
The existing wet-weather station (operating since 2005) now being upgraded, in Interbay near Elliott Bay. We anchor the north search here and canvass Interbay / Magnolia-edge / Ballard for office, warehouse, and yard.
These are construction and commissioning programs — the office, warehouse, and yard need to sit close to their site so crews, materials, and equipment are where the work is. That's why we run two anchored searches, not one city-wide sweep.
Seattle close-in industrial has run structurally tight for years, with limited new supply and constant pressure from logistics, maritime, and construction users. Quality space leases on relationships, often before it's marketed.
Industrial outdoor storage / laydown is the rarest asset in the corridor — shrinking as land redevelops. Securing it near the project sites is the single most important, and hardest, part of this assignment.
Rents, parking, access, and jurisdictional costs vary block to block across SODO, Georgetown, South Park, and Interbay. We map the trade-offs so the County's dollars and schedule go furthest.
Illustrative recent transactions and current asking rents from market data; specifics confirmed during the engagement. Party names withheld.
A live inventory of available and off-market office, warehouse, and yard space across both corridors, current asking and effective rents, and direct relationships with the owners who control it. We'll deliver a current-market survey during the strategy phase — this platform frames the approach and previews the availability.
Current corridor availability that fits the program, split into a tab per requirement. The RFP calls for multiple leases and does not require the uses to be co-located — but where we can put them next to each other, we cut cost, travel, and coordination. Start with Combined & Adjacent. Distances are straight-line to the WWTS site at S Spokane & 1st Ave S.
Each tab is one requirement — Office, Warehouse, Yard/IOS, Parking — plus a lead Combined & Adjacent view. Options carry our posture (Tour, Hold, Pass) and a distance to the SODO project site. Space is shown unbranded; sizes/rates are recent market data, verified with ownership before any tour.
Two ways to co-locate: a single site already holding office + warehouse + yard, or an adjacent cluster on 1st Ave S — the WWTS site's own street — where separate leases sit a few blocks apart. Both keep the program tight around the project.
If the program prefers separate leases, this dense run on and around 1st Ave S — the project's own street — lets us place office, warehouse, and yard within a few blocks of each other and the site. A sample of what's open now:
| Address | Type | Avail SF | Land | Dist |
|---|---|---|---|---|
| 3301 1st Ave S | Manufacturing | 36,000 | 0.68 ac | 0.12 mi |
| 65 S Horton St | Warehouse (big-box) | 146,002 | 1.09 ac | 0.13 mi |
| 3200 Occidental Ave S | Secured yard / terminal | 16,442 | 0.97 ac | 0.19 mi |
| 3663 1st Ave S | Warehouse | 24,000 | 0.92 ac | 0.19 mi |
| 3847 1st Ave S | Warehouse (big-box) | 130,541 | 2.40 ac | 0.28 mi |
| 25–29 S Hanford St | Warehouse + office | 34,997 | 1.06 ac | 0.28 mi |
| 4000 1st Ave S | Manufacturing | 57,777 | 1.21 ac | 0.32 mi |
| 3851 1st Ave S | Warehouse + yard | 35,579 | 1.59 ac | 0.35 mi |
| 3849–4143 1st Ave S | Office + wh + yard | 32,281 | 6.78 ac | 0.37 mi |
Straight-line distances to S Spokane St & 1st Ave S. Illustrative current availability; verified with ownership before tour.
A dedicated ~40k office block is the tightest requirement in this industrial corridor — most large office sits inside combined flex buildings rather than standalone. We'd anchor the office in a combined site (below), or run a targeted office-market pull alongside the industrial search. Strongest office-bearing options open now:
"Abundant parking" is delivered three ways, and we lock it into each lease: (1) the land-heavy combined and yard sites carry multiple paved acres — ample fleet and staff parking on the same control; (2) SODO/Duwamish buildings typically include surface parking we negotiate into the lease; and (3) where a site is parking-short, we secure an adjacent lot on a companion lease. We size parking to WTD's field-and-office headcount and fleet during the strategy phase.
Interbay / Ballard close-in industrial is among the most supply-constrained submarkets in the region — very little is openly marketed and most space trades on relationships. We'll run a dedicated Interbay canvass for office, warehouse, and yard near the Elliott West site during the strategy phase and add those options here. Being relationship-driven there is exactly where our team's owner network earns its keep.
Even a first pass shows real, program-fit space — including combined office + warehouse + yard sites and genuine secured laydown — available now in the Duwamish. That is the difference between a firm that claims the market and one that already works it every day.
A repeatable methodology built for public-agency work: rigorous up front, fast in the market, and structured so every lease clears Council cleanly and lands on schedule.
Confirm the program with WTD — space types, sizes, adjacencies, budget, and schedule for each project. Define search geography and success criteria. Deliver a market survey of available and off-market options in both corridors.
Canvass on- and off-market space, prioritize the scarce yard/IOS, and tour a curated shortlist. Provide a side-by-side comparison — rent, term, condition, parking, access, and total occupancy cost.
Run competitive negotiations to drive rate, concessions, and flexible terms. Manage LOIs and lease drafts on the County's fast turnaround expectations, coordinating with County counsel and risk.
Package each transaction for Council — fair-market documentation, business terms, and the record needed for authorization. We build the process into the schedule from day one so it never becomes the bottleneck.
Coordinate lease execution, fit-out timing, and commencement across the multiple leases so the program is in its space when the work demands it.
One senior-led team across all leases — no handoffs, no gaps between the office, warehouse, and yard searches.
Open reporting on options, economics, and compensation — everything documented for the public record.
Structured to hit ~5-day document turnarounds and a 2027–28 occupancy without cutting corners on diligence.
Representative Kidder Mathews assignments that map to this program — public-agency clients, facility searches and dispositions, multi-space requirements, and the scarce yard/IOS product this search hinges on. Public-sector engagements are named below; private tenant-rep clients are described by type. A full transaction schedule and references accompany our formal proposal.
Represented the fire authority on both sides of its real estate — the disposition of ±19.86 acres of surplus land (under contract to a national developer at ~$22.35M) and the search for a new station site. A public agency, a surplus sale, and a facility search through public governance — the closest analog to this assignment.
Advising SPU on the disposition of its closed Kent landfill holdings and on a multi-acre secured-yard requirement in this same Duwamish corridor supporting a capital project — the same client type, geography, and asset class as the WTD program.
Advisory on port and marine-industrial ground leases and land — fluency in public leasing standards, fair-market process, and board/commission approval that carries directly to King County's Council process.
Represented a national user on a 120,000–140,000 SF warehouse-plus-yard requirement — combined building and outdoor storage, the exact mix this program needs.
Tenant-rep search for a large storage / distribution user — the scale, comparison, and negotiation discipline behind a multi-lease program.
Active leasing and advisory on secured yard along the Duwamish — the corridor and asset at the center of this search, where most availability never hits the open market.
Site selection for a manufacturing user on a slab- and power-spec requirement — the technical diligence a specialized facility program demands.
Multiple simultaneous leases and multi-building programs run with unified reporting — the coordination a two-project, multi-lease assignment requires.
Ongoing sell-side and land assignments across SODO and the Duwamish — deep, current knowledge of who owns what along the project corridor.
Public-sector references — including the agency clients named above — are provided with our formal proposal and available on request.
The people who pitch are the people who do the work. A senior-led team backed by Kidder Mathews' research, valuation, and lease-administration platform — one accountable group across every lease.
That structure means the County gets independent, conflict-managed counsel from senior local experts — backed by the research, valuation, and management depth of a major regional platform.
Our services are compensated by the landlord on each lease, consistent with standard tenant-representation practice — with full transparency and no cost to King County.
We welcome an interview to meet the team and walk through our approach in detail.
Confirm the program with WTD and deliver an initial market survey of both corridors within weeks.
Begin sourcing and touring — prioritizing the scarce yard/IOS — toward 2027–28 occupancy.
Matt Murray, SIOR · Executive Vice President, Shareholder · Kidder Mathews · 206.919.4515 · matt.murray@kidder.com · 500 108th Ave NE, Suite 2400, Bellevue, WA 98004