Interior Systems, Inc.

Interior Systems, Inc., doing business as ISI Professional Services, is a Service-Disabled Veteran-Owned Small Business based in Sterling, Virginia, that operates as a prime contractor delivering real estate transaction support, construction management, facilities assessment, and program support services across the federal government. The vendor competes predominantly under SDVOSB set-asides on VA work and under full-and-open competition on General Services Administration and other civilian-agency contracts; all 1,010 awards in the source are prime contracts (100% prime posture), with no subcontractor activity reported.

Customer concentration is acute. The Department of Veterans Affairs Office of Construction and Facilities Management represents the dominant customer, accounting for 125 awards with $248.5 million in combined potential value—roughly 93% of the top-five customers' combined value and 9% of the vendor's total potential value across all agencies. The General Services Administration drives secondary volume through the Public Buildings Service (130 awards, $288 thousand combined potential value), but the dollar split reveals structural concentration: the VA's real estate and construction work dwarfs the GSA's furniture-and-administrative-services activity. Across 84 distinct customer agencies, the top five account for 46% of awards by count but only 14% of combined potential value, underscoring how heavily the VA relationship anchors the portfolio.

Interior Systems holds three principal indefinite delivery vehicles anchoring its federal footprint. A $631 million multiple-award BPA for construction management and program management services under the GSA Multiple Award Schedule, awarded by the VA Technology Acquisition Center in August 2026, extends through August 2031 and represents the highest-value vehicle recently established. The vendor's signature contract is a $130 million multiple-award Blanket Purchase Agreement for real estate transaction support services issued by the VA Office of Construction and Facilities Management in August 2023, set aside for SDVOSB competition, running through August 2027. Work under this BPA spans the continental United States—Sterling, Alexandria, Roseburg, Salisbury, Atlanta, Lemay Township, Reno, Bakersfield, and Loma Linda—delivering due diligence, title and appraisal services, and land acquisition assessment for the VA's facility and Fisher House acquisition portfolio. A $26.5 million single-award BPA for construction, maintenance, and repair services with the National Park Service National Office (awarded November 2023, running through October 2028) rounds out the core vehicle set. The Multiple Award Schedule itself serves as a parent for 234 task orders valued at $850.4 million in combined potential value across civilian agencies. Recent representative work includes a $2.22 million construction management delivery order for EHRM infrastructure upgrades at Lake City Veterans Affairs Medical Center (awarded May 2026, completing May 2029) and multiple smaller BPA calls for real estate due diligence—$544,790 for Reno Sparks ALTA survey and appraisal services, $259,480 for Salisbury due diligence, $237,589 for Chelmsford due diligence, and $197,950 for Jefferson Barracks due diligence, all issued in September–October 2024 under the SDVOSB set-aside.

Activity has contracted significantly in recent years. The vendor recorded 18 awards in 2024, 16 in 2023, and only 6 in 2022, followed by a steep cliff to 4 awards in 2025 and 5 in 2026 (through late September). Combined potential value across all 1,010 awards stands at $2.68 billion, but only $190.2 million (7%) has been obligated to date—a gap reflecting the presence of large ceiling values on indefinite delivery vehicles against which task orders have not yet been called. Only 13 awards face ultimate completion within the next twenty-four months, carrying $2.6 million in combined potential value, limiting near-term recompete exposure.

Service Contract Inventory data shows a declining staffing trajectory over the past four fiscal years. SCI-reported invoicing on federal service contracts above the $150,000 threshold totaled $25.6 million across FY2022–FY2025, concentrated in FY2022 ($12.1 million across 133 FTEs), with sharp declines in FY2023 ($7.6 million across 54.3 FTEs), FY2024 ($2.5 million across 8.5 FTEs), and FY2025 ($3.4 million across 5.4 FTEs). On SCI-reportable prime contracts, median government-paid hourly rates ran around $119.33 per hour, with 90th-percentile rates reaching $141.89 per hour; the 10th percentile reflects recording artifacts (zero-dollar entries). Across SCI-reportable prime contracts, subcontractor hours averaged 16% of total hours, with 24 named subcontractors reported. This relatively low sub-engagement share, combined with the vendor's 100% prime posture in the broader award portfolio, indicates Interior Systems builds most delivery capacity in-house rather than relying on subcontractor networks. The vendor's GSA Schedule labor portfolio spans 74 active categories priced between $42.43 per hour (Administrative/Technical Assistant Level 1) and $368.26 per hour (Partner-level consultant), with education requirements ranging from high school to bachelor's degree and no security-cleared roles offered, reflecting a civilian-side professional-services and facilities-management posture.

Interior Systems operates through three named SDVOSB subsidiary entities—I D Services LLC, Precedent Solutions LLC, and Isi-Markon JV LLC—all structured as veteran-owned small-business joint ventures. The parent company's registration with SAM.gov dates to May 2001, anchoring a 25-year federal contractor history concentrated on VA real estate, construction management, and program support work.

ISI Professional Services is a Virginia-based consulting firm offering our federal and commercial clients a comprehensive range of services nationwide. ISl's core competencies include: Program & Project Management, Construction Management, Acquisition Consulting, Logistics Support Services, and a wide range of Professional & Administrative Support Services. ISI integrates our diverse capabilities, extensive experience and expertise to deliver client-focused results. As a Service-Disabled Veteran-Owned Small Business, we are uniquely able to respond anywhere and anytime; and, as our nearly 30-year history illustrates, our deeply rooted relationships and success offer a low-risk solution to existing and emerging needs.

ISI's vision is to be our customers' preferred vendor, across our spectrum of services, by delivering dynamic customer value while constantly striving for improvement and exerting organizational excellence.