8(a) Federal Construction Services: NAICS 236220 vs. 332311, Explained
The NAICS code on a modular requirement decides which 8(a) federal construction services can be bought sole-source, and at what ceiling. Get it right …
UEI: E5KCB1AL71J7 · CAGE: 97SC3 · NAICS: 236220 · 332311
SBA 8(a) · Minority - Owned Small Business
Blog, FAQ, and capability downloads. Built for contracting officers, program managers, and SBA Small Business Specialists working an 8(a) award or modular procurement.
The NAICS code on a modular requirement decides which 8(a) federal construction services can be bought sole-source, and at what ceiling. Get it right …
An SBA 8(a) design-build contractor holds the entire modular project under one contract: design, engineering, manufacture, site work, installation, and warranty. For the federal …
An 8(a) modular construction contractor gives a federal agency the fastest legal path from requirement to award: the SBA 8(a) sole-source contract. No competitive …
An 8(a) sole-source contract is a direct award to a certified small disadvantaged business — no competitive solicitation, no bid protest window. Federal agencies use it to award up to $4.5M ($7M under manufacturing NAICS) to an 8(a) firm directly. STC carries active 8(a) status and is eligible to receive these awards.
Sole-sourcing through the 8(a) program can move quickly, sometimes in a few days and often in under two weeks, depending on scope, funding, and agency approvals. STC delivers a federal-format proposal in 5–10 business days. SBA approval typically takes 10–21 days. Agencies with delegated 8(a) authority compress this further by approving internally.
STC's primary NAICS is 236220 (Commercial and Institutional Building Construction). Secondary NAICS is 332311 (Prefabricated Metal Buildings). Most federal modular projects fall under one or both. STC's full NAICS list is as follows: 236220, 237310, 238110 238190, 238290, 238990 321992, 332311, 531120
Factory-built modular buildings that ship to a federal installation and are assembled on a prepared site. Modular delivers schedule compression versus stick-built — 90 to 180 days from contract to commissioned for most STC building types. Quality is held to federal construction standards, not commercial standards.
Both. STC delivers permanent modular buildings (warrantied, asset-grade, on permanent foundations) and relocatable units (skid- or pier-mounted, designed for redeployment). Federal agencies typically classify modular buildings as personal property — relevant for warranty, depreciation, and decommissioning. STC also offers a leasing program. Leased buildings include ongoing maintenance for the term of the contract, so the agency is not carrying upkeep on a building it does not own.
Secure facilities, labs, command centers, data centers, training buildings, administrative offices, medical units, storage, and berthing. STC scopes hardened, blast-resistant, and SCIF-grade enclosures when required. Site preparation, foundations, utilities, and commissioning are part of the design-build delivery — not handed off to a separate contractor.
Sole-source awards bypass the competitive solicitation cycle — no RFP, no bid evaluation, no protest window. Competitive procurements typically run 90 to 180 days. SBA 8(a) sole-source under threshold completes in under 30 days. Agencies use sole-source when they need schedule certainty and a known-quality vendor.
DoD components and several civilian agencies have delegated 8(a) authority — they approve sole-source 8(a) awards internally rather than routing through SBA HQ. STC works directly with the agency contracting officer when delegated authority applies. Award timelines compress by 1 to 2 weeks under this path.
Federal-format proposal: technical approach, schedule, price, past performance, bonding letter, certifications (SBA 8(a), SAM.gov registration, USACE CQM credentials, state licensing). Submittal includes the Capabilities Document mirror, signed offer, and any agency-specific reps and certs.
Standard range: 11 to 13 months from contract NTP to commissioning. Schedule varies by building type, security level, and site readiness. Hardened and SCIF-grade buildings sit at the longer end; administrative, storage, and berthing fall at the shorter end. STC commits to delivery in the proposal. If the agency uses STC's existing engineered designs or available inventory, delivery moves significantly faster, in some cases under 11 months.
STC's schedule assumes a defined NTP-to-site-ready window. If the agency's site preparation slips, STC re-baselines the production schedule and notifies the contracting officer in writing. Factory work continues during site delays — most projects can absorb a 14- to 21-day site slip without missing commissioning.
STC carries an active bonding line with capacity sufficient for the federal modular projects it pursues. Single-project capacity is $5M and aggregate capacity is $10M. STC provides a bonding letter from the surety with every federal proposal that requires one.
Yes. Federal modular projects above the Miller Act threshold require both payment and performance bonds — STC carries both as standard. Bond costs are line-itemed in proposals. STC's surety relationship is established with a federally-rated surety, and the surety letter is available on request.
Yes. STC arranges direct reference calls with cleared past-performance contacts after a briefing request. References are coordinated through STC's office administrator and routed to the relevant project's contracting officer or program manager. Allow 2 to 5 business days to schedule.
Some STC projects are not publicly listed. The public proof on /past-performance — agency relationships, contract values, schedule outcomes — is sufficient for procurement-stage verification. Classified scope is discussed only with cleared contracting officers after a briefing request, and never on the public site.
Standard one-year warranty on buildings purchased by the agency. Lease-program buildings carry full-term service for the duration of the lease. Warranty covers manufacturing defects, system failures, and weather-tightness — the federal modular warranty regime, not commercial. Full terms in the Capabilities Document.
2-hour guaranteed maintenance response and 24/7 maintenance coverage, nationwide. For most service calls STC dispatches local contractors who know the area, the installation, and the local conditions. Scope, response, and resolution are managed by STC directly, so the agency has one accountable party regardless of who turns the wrench. Warranty work and lease-program service both run through STC's field service team. Service requests are submitted through the form on /capabilities.
Yes. STC delivers buildings on lease, lease-to-own, or direct-purchase contracting structures. Lease structures bypass capital-expenditure approvals and shift the building to operations budget. Full-term service and warranty are included in lease pricing. Sole-source 8(a) eligibility applies to lease awards under the same FAR thresholds.
Crowley, Texas. STC is a Texas-incorporated SBA 8(a) certified small business. Factory and field operations work nationwide — every U.S. state and territory. Warranty and lease service are dispatched from Crowley with a nationwide field service network.
STC is family-owned and operator-led. Hector Rodriguez owns and leads STC. Contracting decisions, pricing, and delivery commitments come from him directly. Hector runs operations, project delivery, and field service. Full bios on /about.
Submit a briefing request and STC responds within one business day.
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