Fathom Architecture, LLC

Fathom Architecture, LLC, a Seattle-based for-profit limited liability company, delivers architectural and engineering design services to the Department of the Navy as a prime contractor (97% of recent awards) and subordinately to construction-related primes. The firm operates predominantly on full-and-open Navy contracts, with Total Small Business set-aside posture recurring across roughly a third of its recent prime delivery orders; the remaining two-thirds award without set-aside.

Fathom's footprint is nearly monolithic within the Navy ecosystem. The Naval Facilities Engineering Command (NAVFAC) dominates both award count and dollar concentration—94 awards carrying $317.9 million combined potential value, representing the bulk of Fathom's $367.5 million total across all customers. The Department of the Navy Installations Command (55 awards, $17.9 million) and Naval Sea Systems Command (35 awards, $17.1 million) round out the active Navy-side customer set, accounting for 81% of recent awards by count. The Department of Commerce National Oceanic and Atmospheric Administration (32 awards, $3.1 million) provides the only material non-Navy exposure. This concentration is reinforced by parent vehicle footprint: the top five indefinite-delivery vehicles are all Navy IDIQs, led by N4425521D0001 (47 task orders, $29 million combined potential value) and N4425515D0001 (56 task orders, $17.9 million).

Fathom's core capability is facility planning, architectural design, and engineering services for military infrastructure modernization and sustainment across Navy and Marine Corps installations in the Pacific Northwest. Recent representative work includes a $4.79 million delivery order (September 2023) under NAVFAC for design and construction of a Launcher Equipment Processing Building and weapons-related materials storage facilities at Naval Base Kitsap-Bremerton, Silverdale, a $1.475 million order (September 2022) for HVAC system replacement at MAB3, Building 6600, a $1.25 million delivery order (September 2022) for design of child development centers at Naval Base Kitsap Bangor and Bremerton, and a $1.569 million delivery order (July 2022) for architectural and engineering services to refurbish the VMPB-3 building. Work encompasses full design packages, feasibility studies, preliminary and final design submittals, design-bid-build construction packages, post-construction award services, and technical consulting for facility systems including HVAC, fire protection, electrical switchgear, communications, fiber optic infrastructure, and life safety improvements. Place of performance consistently tracks to Pacific Northwest naval installations—Bremerton, Silverdale, Keyport, Bangor in Washington state, with Puget Sound Naval Shipyard, Naval Base Kitsap, and associated SWFPAC (Southwest Facilities) locations anchoring the geography.

Activity has held relatively steady at 13–17 awards per year over the past five years, with 9 awards facing ultimate completion within the next twenty-four months and carrying $4.5 million combined recompete exposure. Fathom regularly engages specialized subcontractors on its prime work: Reid Middleton Inc., a Washington-based architecture and engineering firm, is the most frequent collaborator, appearing across roughly a dozen recent sub-awards for civil and structural engineering, seismic assessments, and design disciplines; Stantec Consulting Services Inc., a global design firm, and Geoengineers Inc. also provide subordinate technical depth. On the sub side, Fathom also subcontracts to Reid Middleton primes (multiple 2025 and 2023–2024 awards for architectural services on Naval shipyard and air station projects), to WSP USA Inc. (preliminary design sub-work for NBK Bangor pier projects in 2024), and to WSM Pacific Siop, a joint venture (50% design work on multi-mission drydock projects at Puget Sound Naval Shipyard in 2024). The firm holds a single-award $10 million IDIQ with Naval Sea Systems Command awarded August 2025, covering facility planning and design services through August 2030, representing a narrow but structured extension of its existing Navy portfolio.

Fathom's NAICS footprint sits almost entirely in Architectural Services (304 of 440 prime awards) with subordinate Engineering Services work (22 awards), and PSC codes track similarly—187 awards under "Architect and Engineering–General: Landscaping, Interior Layout, and Designing" and 94 under "Architect and Engineering–General: Other." The vendor operates without material civil-sector, defense-prime, or cross-functional service exposure; it is a specialized Navy facilities design shop with long-term customer concentration that creates both stability and recompete cliff risk.