Mills & Schnoering Architects LLC

Mills & Schnoering Architects LLC, a Princeton, New Jersey-based architecture and historic preservation firm, operates as a prime contractor delivering architectural design, engineering, and facility assessment services to federal civilian agencies entirely with in-house staff and no reported subcontractor activity. The firm competes predominantly under full-and-open competition and Total Small Business set-asides across a diverse federal customer base.

Mills & Schnoering is a for-profit limited liability partnership serving 22 federal agencies across a 148-award prime footprint totaling $76.8 million in combined potential value. The firm's work centers on multidisciplinary architect-engineer services for federal facilities modernization, historic preservation, and building system analysis. Concrete recent work includes a $1.18 million Central Utility Plant feasibility analysis for the Smithsonian Institution (January 2026), a $879,897 mansion envelope repair contract for the Cooper Hewitt Smithsonian Design Museum (August 2026), a $180,787 roof replacement delivery order for the National Museum of the American Indian (September 2026), a $657,116 lecture hall renovation design for the Smithsonian (April 2024), and a $469,219 Clara Barton National Historic Site rehabilitation design for the National Park Service (May 2023). Work spans courtroom hardening, HVAC system retrofits, building envelope investigations, electrical studies, and construction administration across multiple regions and territories.

Customer concentration is split geographically and by agency mission. The top five customers by award count account for 72% of awards: the Department of Interior National Park Service National Office leads with 44 awards ($19.6 million combined potential value), followed by GSA Public Buildings Service Region 3 (26 awards, $12.8 million), National Park Service Northeast Region (13 awards, $1.4 million), Social Security Administration (13 awards, $1.6 million), and Administrative Office of the U.S. Courts (11 awards, $1.4 million). By dollar volume, however, GSA Public Buildings Service Region 2 dominates at 87% of combined potential value: 9 awards worth $26.3 million combined, reflecting the firm's established presence in the Northeast and U.S. territories. The rankings diverge substantially — GSA Region 2 places fewer orders but at higher individual value, while NPS National Office anchors volume through numerous smaller task orders.

Mills & Schnoering holds primary seats on five indefinite delivery vehicles. The firm operates under GSA Public Buildings Service Region 2's $25 million multiple-award IDIQ (awarded July 2021, through June 2026), which has generated 8 to 9 task orders worth approximately $26.3 million; GSA Public Buildings Service Region 3's indefinite delivery contract (GS03P16DXD7012, 49 task orders, $7.5 million combined potential value); the National Park Service National Office indefinite delivery contract (INP15PC00042, 47 task orders, $9.6 million combined potential value); GSA Region 2 indefinite delivery contract (47PD0221D0001, 8 task orders, $599 thousand combined potential value); and the Smithsonian Institution single-award IDIQ (33330223DF0010114, awarded February 2023 through February 2025, which has generated over $3 million in task orders to date, with 7 task orders at $4.2 million combined potential value visible in recent awards). The Smithsonian vehicle carries a notional $1 ceiling but functions as an active ordering mechanism for multidisciplinary architect-engineer services supporting the institution's portfolio of museums and historic facilities.

Activity has declined in recent years. The firm recorded 10 awards in 2022, 11 in 2023, 4 in 2024, 2 in 2025, and 3 in 2026 through early September. Recompete exposure in the next twenty-four months is minimal: only 3 awards with ultimate completion dates in that window carry combined potential value of $485 thousand, indicating a stable but modest near-term recompete pipeline.

SCI-reported federal service-contract invoicing totaled $2.2 million across fiscal years 2022 through 2025 ($869 thousand in FY2022, $553 thousand in FY2023, $284 thousand in FY2024, and $445 thousand in FY2025). SCI reflects only federal services contracts above the $150 thousand reporting threshold and excludes goods and non-federal work; it is a strict subset of the firm's total federal revenue and does not represent company-wide revenue. The SCI dataset shows roughly 1.4 FTEs delivered in FY2022, declining to 0.4 FTEs in FY2024 and recovering slightly to 0.6 FTEs in FY2025. On federal services contracts captured in SCI, government-paid rates ran around $261/hr median, with senior labor pricing through $433/hr (90th percentile) and entry-level rates near $152/hr (10th percentile). The firm performed zero subcontract hours across SCI-reportable prime contracts, confirming its all-in-house delivery model.

Capability concentration is architectural: 144 of 148 awards fall under NAICS Architectural Services, with the remainder split between engineering services (3 awards) and commercial building construction (1 award). PSC coding reflects the breadth within architecture — 113 awards code to general architect-engineer landscapes and interior design, 14 to office building construction, 8 to museums and exhibition buildings, and 3 to engineering drafting. The firm's portfolio emphasizes federal courthouse modernization, Smithsonian and National Park Service facility rehabilitation, and building systems engineering (utilities, HVAC, envelope integrity) across the Northeast, Mid-Atlantic, and U.S. territories.