Walkthrough: Design a Volumetric Modular Housing Factory (300 units/yr)
This walkthrough scopes a 200,000 ft² (18,600 m²) greenfield volumetric modular housing factory producing 300 single-family + multifamily (3-5 story) units per year. Volumetric modular means the building is delivered as fully-finished 3D box modules (drywall + paint + flooring + cabinetry + plumbing fixtures + electrical trim complete) that are stacked onto a foundation at the jobsite — distinct from panelized (flat-pack walls + floors), kitted (cut lumber + assembly drawings), or mobile-home / HUD-code factory-built homes. The target is mid-market multifamily + workforce housing at $200-300/ft² delivered (vs $300-500/ft² conventional stick-built in California, Massachusetts, NYC).
Reference factories: Katerra (Phoenix AZ + Tracy CA, peak 2018-2020, bankruptcy June 2021 — $2B+ invested, instructive failure mode); FactoryOS (Vallejo CA + Stockton CA, acquired by Autodesk 2021, then largely wound down 2024-2025); BoxFab (Surrey BC); Volumetric Building Companies / VBC (Berwick PA, formerly Z Modular, acquired BoltGroup 2022); BoltUp (Hampton VA); BMarko Structures (Buford GA, 2-phase factory); RAD Urban (Lathrop CA, shut 2021); Plant Prefab (Rialto CA, backed by Amazon Alexa Fund — single-family); Boxabl (Las Vegas NV, foldable Casita); Module + Module2 (Pittsburgh PA, infill); Connect Homes (Dallas TX); Champion Home Builders (large HUD-code + modular hybrid); Cavco Industries (HUD + park model + commercial modular); Skyline Champion (Elkhart IN); Modulous (UK design platform); Berkeley Modular (UK, Berkeley Group venture); Polcom Modular (Poland, hotels); ATCO Structures (Calgary, workforce camps).
1. Factory spec
| Parameter | Target | Notes |
|---|---|---|
| Plant footprint | 200,000 ft² (18,600 m²) | Single bay, 60 ft (18 m) clear height for stacking |
| Annual output | 300 units (single-family equivalent) | 600-900 modules (most homes 2-3 module sections) |
| Mix | 60% multifamily 3-5 story, 40% single-family | Adjustable by chassis design |
| Module dimensions | 12-15 ft wide × 40-72 ft long × 9-11 ft tall | Highway shipping max 16 ft wide, 13.5 ft tall, 75 ft long without escort |
| Module weight | 20,000-40,000 lb (9-18 t) | Crane-set + truck-axle constraints |
| Construction type | Light-gauge steel (cold-formed) chassis + framing | Some lines use lumber + LSL/LVL hybrids |
| Energy code | Passive House Institute (PHI / PHIUS) ready | Insulation + air-tightness baked in factory |
| Cycle time per module | 2-3 days station-to-station | 8-12 stations on the line |
| Annual revenue | $60-100M | Avg $200-330k per unit FOB factory |
| CapEx | $50-100M greenfield | $25-40M for brownfield retrofit |
| Workforce | 250-400 FTE | Two shifts at full output |
2. Why volumetric (and why most factories failed)
The economic thesis: 70-85% of construction labor moves from outdoor field conditions (weather-dependent, sequential trades, transportation overhead, theft risk) to indoor station-line conditions (parallel workflow, lean kaizen, standardized tooling, automation). Industry benchmarks claim 30-50% labor-hour reduction + 30-50% schedule compression + 20-30% cost reduction at scale.
The failure mode (Katerra is the textbook case):
- Underestimating R&D + integration cost — Katerra burned $2B+ developing factory + CLT (cross-laminated timber) plant + design software + GC arm simultaneously
- Insufficient sustained demand — modular needs a sustained 200+ unit/year pipeline aligned to factory cadence; project-by-project orders create idle-factory cost
- Permitting + entitlement timeline mismatch — site work + foundation must be ready exactly when modules arrive; field schedule slippage = factory stockpile crisis
- Module-to-module variation — 3-5 story stacking demands ±1/4” tolerance on overall module height + width; sloppy QC = field rework that wipes out factory savings
- Trucking + crane logistics — wide-load permits, route surveys, escort vehicles, crane mobilization ($15-40k per project), and 250+ mile shipping radius hard limit
- Inspection regime mismatch — state modular agencies + third-party inspectors (PFS Teco, RADCO, NTA Inc, Architectural Testing — now Intertek) certify factory-built; local AHJ (Authority Having Jurisdiction) field inspectors must accept that certification + only inspect site connections
- Financing friction — banks unfamiliar with modular construction lien position; modules built but not delivered are personal property (UCC) not real property until set + connected — collateral confusion has killed projects mid-build
The factories that survive (VBC, BMarko, Champion Modular, Cavco) tend to be: vertically integrated developer-builder (own pipeline), or focused on multifamily/workforce/hotel single-customer programs (Marriott + Hilton + military housing).
3. Process flow
Steel + lumber + drywall + finished goods inbound (truck)
└─→ Material staging warehouse (Q1 demand horizon, 4-8 wk)
└─→ Sub-assembly cells:
│ ├─→ Floor cassette (joists + sheathing + insulation)
│ ├─→ Wall panel (studs + sheathing + windows + insulation)
│ ├─→ Ceiling cassette (joists + drywall + electrical rough-in)
│ ├─→ MEP modules (utility wall pre-built)
│ ├─→ Kitchen / bath pods (full-finish, "boxes within boxes")
│ └─→ Roof cassette (for top-floor modules)
└─→ Main assembly line — 8-12 stations, conveyor or skate moved
├─→ Station 1: Floor cassette on chassis carrier
├─→ Station 2: Wall panels craned + braced + bolted
├─→ Station 3: Ceiling cassette set + interior framing complete
├─→ Station 4: Electrical rough-in + plumbing rough-in completed
├─→ Station 5: HVAC rough-in + insulation
├─→ Station 6: Drywall hang + tape + first coat
├─→ Station 7: Finish (paint, flooring, trim, cabinetry, fixtures)
├─→ Station 8: Plumb-and-fill + electrical trim + appliance install
├─→ Station 9: QC inspection + third-party + state agency
├─→ Station 10: Shrink-wrap weather protection + door securement
└─→ Station 11: Roll-out to staging yard
└─→ Truck loading (custom carrier or 53' step-deck)
└─→ Highway transit
└─→ Jobsite crane set onto foundation
└─→ Field finish: connect MEP + roof seam + siding + porches
4. Building system selection
4.1 Structure
Three dominant chassis options:
| System | Pros | Cons | Best for |
|---|---|---|---|
| Light-gauge cold-formed steel (CFS) | Dimensional stability, fire-rated, predictable, recyclable, termite-proof | Thermal bridging, requires careful detailing, higher embodied carbon | 3-12 story multifamily, hotel, dorm |
| Dimensional lumber + LSL/LVL | Familiar trades, lower cost/lb, lower embodied carbon | Moisture sensitivity in transit, dimensional creep, fire restrictions | Single-family + low-rise |
| Hybrid CFS chassis + wood interior | Best of both | Mixed trades, complex connections | Mid-rise multifamily |
For this factory: CFS chassis (8-12 gauge, 6”+ studs) with wood interior framing for multifamily; pure dimensional lumber line for single-family runs. Steel from Marino\WARE (NJ), ClarkDietrich (Cincinnati OH), Steelworks (LP Building Solutions), TELLING Industries. Wood from Weyerhaeuser (LSL/LVL), Boise Cascade, Roseburg Forest Products, Louisiana-Pacific (LP Solid Start I-joists, LP TechShield radiant barrier).
Connection systems: Simpson Strong-Tie (engineered connectors at module-to-module + module-to-foundation), MiTek (truss + connector), USP Structural Connectors, ICC-ES evaluated stud-to-track screws.
4.2 Envelope
Wall assembly target: R-25 nominal, ~0.3 ACH50 air leakage (Passive House threshold 0.6 ACH50):
- Exterior siding (HardiePlank fiber cement / James Hardie, LP SmartSide, Nichiha, metal panel) — typically applied field-side at final cladding pass
- Continuous exterior insulation (Rockwool Comfortboard 80, Owens Corning Foamular XPS, Carlisle PolyISO)
- Air/water barrier (Henry Blueskin VP100, Tyvek CommercialWrap, ZIP System R-Sheathing — Huber Engineered Woods)
- Sheathing (OSB or ZIP)
- Studs + cavity insulation (Owens Corning EcoTouch, Rockwool ComfortBatt, Knauf Earthwool, Johns Manville)
- Interior gypsum (CertainTeed, USG, National Gypsum, Georgia-Pacific) — typically 5/8” Type X for fire rating
Window selection: triple-pane fixed + tilt-turn at PH-ready (Marvin, Pella, Andersen, Schüco, Mathews Brothers); double-pane low-E for market-rate (Jeld-Wen, MI Windows).
4.3 MEP factory pre-fit
The factory advantage compounds when MEP is bench-built outside the module then dropped in:
- Plumbing pods: full bath stack (tub + toilet + vanity + plumbing tree) pre-built on rolling cart, lifted into module at Station 4. Suppliers: Eggrock (Worcester MA, pioneer), DIRTT (specialty), Bestbath (compliance baths)
- Kitchen modules: pre-built cabinet runs with appliance cutouts, drop-in style
- MEP utility wall: a single wall containing plumbing manifold + electrical sub-panel + HVAC trunk + DHW heater — built off-line and craned in
- HVAC: ductless mini-split (Mitsubishi Mr. Slim, Daikin VRV) increasingly common for modular (no ductwork crossing module joints); centralized ERV (Zehnder, Panasonic, Broan AI) for IAQ
- Hot water: heat pump water heater (Rheem ProTerra, AO Smith Voltex, Stiebel Eltron) trending for code compliance with new IECC + California Title 24 + IRA HPWH rebates
4.4 Fire + life safety
Modular construction inherits a “factory-built” code path:
- NFPA 13 / 13R sprinkler — wet system pre-installed, capped at module edge, field-coupled
- NFPA 72 fire alarm — devices installed, head-end at field
- Compartmentation — full Type I/II/IIIA-IIIB/VA-VB construction type per IBC Chapter 6; modular adds inter-module floor + wall assemblies that must independently meet 1-hr or 2-hr ratings per dwelling unit separation
- State-specific modular code: many states require third-party inspection agency to certify each module to that state’s adopted IRC/IBC + amendments. PFS Teco (Madison WI), NTA Inc, RADCO (Long Beach CA), Architectural Testing / Intertek (Champion modular partner)
5. Assembly line equipment
5.1 Conveyance
- Heavy-duty rail-on-floor system + scissor-lift jacks (Sutton Skate, Wienäßl modular conveyance, Mecanizados Escribano) — modules move station-to-station every 4-8 hr
- Or air-skate systems (Aerogo, AeroGo) — pneumatic levitation for ultra-heavy / wide modules
- Floor flatness ±1/4” over 200 ft (FF35+ per ACI 117) — critical for accurate stacking
5.2 Lifting + craning
- 20-50 ton overhead bridge cranes (Konecranes, Demag, Harrington) for chassis + cassette handling — 2-4 cranes per bay
- Vacuum lifters (J. Schmalz, ANVER, Wood’s Powr-Grip) for drywall + sheathing
- Forklift / sideloader fleet (Combilift C8000, Hyster H50FT, Toyota 8FBE) for material movement
5.3 Fabrication cells
- CFS roll forming: Howick X-Tenta (NZ — robotic stud manufacturing, ~$1.5-3M per machine), Pinnacle (TX), Pacific Studco (Vancouver WA)
- Truss + cassette assembly: MiTek Cyber A/T, Wood Truss Systems, BlueprintRobotics + Randek (Swedish CNC framing line, $3-8M)
- CNC routers + saws: Weinig Powermat, Holz-Her, SCM Group; for steel — Voortman V303, Peddinghaus PCD1100
- Robotic nailing / screwing: WeldSafe, House of Design Robotics, Randek robotic stations
- Drywall robotics: Canvas (San Francisco, robotic drywall finishing — IPO planned), House of Design Robotics
- Spray booths (paint): Wagner, Graco — paint application typically manual but in controlled environment (no overspray in adjacent stations)
5.4 QC + dimensional control
- Laser tracker (FARO Vantage, Hexagon Leica AT960) for as-built module dimensional verification at QC station
- Photogrammetry (Hexagon Cronos, FARO Cobalt Max) for surface flatness
- Air leakage test rig (Retrotec DM32 fan + manometer) — per-module blower-door at Station 9, target <0.6 ACH50
- IR thermography (FLIR T865, Fluke TiX580) for insulation continuity
- Acoustic test (impact insulation IIC, sound transmission STC) at periodic sample basis
6. Materials supply chain
Annual material consumption at 300 units/yr (~600 modules avg 1,500 ft²/module finished):
| Material | Annual quantity | Suppliers |
|---|---|---|
| Cold-formed steel studs + track | 2,000-4,000 tons | ClarkDietrich, Marino\WARE, TELLING, Steeler |
| Dimensional lumber (2x, LSL, LVL, I-joist) | 1.5-3M bf | Weyerhaeuser, Boise Cascade, Roseburg, LP, West Fraser |
| Sheathing (OSB, ZIP) | 0.6-1M ft² | Huber (ZIP), LP, Norbord (now West Fraser), Georgia-Pacific |
| Gypsum board | 1.5-3M ft² | USG, National Gypsum, CertainTeed, Georgia-Pacific |
| Insulation (batt + foam + mineral wool) | 1-2M ft² | Owens Corning, Rockwool, Knauf, Johns Manville |
| Windows | 4,000-10,000 units | Marvin, Pella, Andersen, MI Windows, Jeld-Wen |
| Doors (interior + exterior) | 3,000-7,000 units | Masonite, JELD-WEN, Therma-Tru, Steves & Sons |
| Cabinetry (kitchen + bath) | 600-1,500 sets | KraftMaid (Masco), American Woodmark, Cardell, IKEA contract |
| Plumbing fixtures | 2,000-5,000 units | Kohler, Moen, Delta, Toto, American Standard |
| Electrical (wire, panels, devices) | 100-200k linear ft wire | Southwire, Cerro Wire, Encore Wire; Eaton, Square D, Siemens panels |
| HVAC equipment | 600-1,500 units | Mitsubishi, Daikin, LG, Rheem, Carrier |
| Flooring (LVT, carpet, tile) | 0.5-1.2M ft² | Shaw, Mohawk, Mannington, Daltile |
| Appliances | 600-1,500 sets | GE, Whirlpool, Frigidaire, Samsung, LG |
Vendor consolidation strategy: master contracts with regional distributors (Builders FirstSource, BMC, US LBM, Foundation Building Materials) provide JIT delivery + take-or-pay flexibility.
7. Foundation + site work interface
A module factory only succeeds if foundation + site work is decoupled and parallel:
- Foundation pour must complete + cure 14-28 days before module set; tolerance ±1/4” on anchor bolt locations
- Site utilities (sewer, water, electric, gas) stubbed-up at module footprint
- Crane access + lay-down area for staging modules during set
- Set sequence — single-family typically 1-day set (2-4 modules); multifamily 3-5 story can be 5-15 days per building (12-30 modules)
- Field labor — set crew (crane op + ironworkers + carpenters + plumbers + electricians) typically 8-15 people; module-to-module connections (Simpson Strong-Tie HD12, HDU14 holdowns, ledger plates) per engineered drawings + state-approved plans
The factory does not build foundations. The development entity (or GC partner) handles site work, foundation, crane mobilization, set, button-up.
Typical site-work scope (per multifamily project, 50 units):
- Foundation + utilities + site grading: $1.5-3.5M
- Crane mobilization + set labor: $200-500k
- Module-to-module sealing + roof seam + siding completion: $300-800k
- Final MEP commissioning + landscape + paving: $1-2.5M
Total field budget ~20-35% of project cost; factory budget ~50-65%; soft costs 10-15%.
8. Transportation logistics
- Module shipped on custom modular trailer (Faymonville MaxTrailer, Goldhofer, Schnabel — wide-load specialists) or stretched step-deck flatbed
- Overhead clearance 13.5 ft max without escort (US Interstate standard); 16 ft tall modules require route survey + utility-line coordination (lift wires, traffic signals)
- Width 12 ft = normal load with single permit + amber lights; 12-16 ft = wide load with escort vehicles; >16 ft = super-load (state-by-state DOT approval, often weekend-only, police escort)
- Length 75 ft typical max; modular dolly extensions to 90+ ft
- Shipping radius economic break-even ~250-400 mi from factory; beyond that, ocean freight (Polcom Poland → US, ATCO Calgary → workforce camps) or rail (BNSF intermodal)
- Cost per module: $3,000-15,000 depending on distance + permits + escorts
Wide-load permitting agencies: state DOTs (CA Caltrans, TX TxDOT, NY DOT each have separate processes). Permit services: Bestway Permits, Evans Network of Companies, MercerTrans.
9. Inspection + certification
State-by-state modular agencies:
| State | Agency | Inspection model |
|---|---|---|
| CA | HCD (Housing + Community Development) | Third-party agency (PFS Teco, NTA, RADCO) certifies; HCD audits |
| NY | NYS DOS Division of Building Standards | Third-party + state oversight |
| MA | MA BBRS Modular | Third-party |
| WA | WA L+I Factory Built Housing | State direct inspection |
| TX | TDLR Industrialized Housing + Buildings | Third-party + state audit |
| Federal | HUD (manufactured housing, NOT modular) | Separate path — HUD-code mobile homes; modular is IBC/IRC-code |
Each module gets a state-issued insignia (DAPIA/HCD/MA Mod label) + serial number, affixed before leaving factory. Field-side inspection limited to: foundation, site utilities, module-to-module connections, anything site-installed (siding patches, roof seams).
Quality system: ISO 9001 typical baseline; third-party agency requires documented quality manual + monthly audit + non-conformance log + corrective action tracking. See quality-systems-iso9001.
10. Energy + sustainability
10.1 Code compliance
- IECC 2024 (or state-amended 2021/2018 version) — envelope + mechanical efficiency
- ASHRAE 90.1-2022 (commercial) or 90.2-2018 (residential)
- California Title 24 Part 6 (2022 update, 2025 supplement) — most stringent state code, all-electric trending mandatory
- Net-zero or net-zero-ready targets common for state-funded affordable housing (CA HCD, NY HCR)
10.2 Passive House execution
PHIUS+ 2021 certification in factory environment is operationally cleaner than in field:
- Air-tightness — modules tested at 0.4-0.6 ACH50 routinely; field-built lucky to hit 1.5-2.5 ACH50
- Continuous insulation — easier to detail in factory; thermal bridge at module-to-module joint is the residual challenge (PHIUS detail library + Therm modeling)
- Triple-pane fenestration — quality-controlled installation
- ERV every dwelling — 70-85% sensible recovery
10.3 Embodied carbon
Modular reduces transport-on-job + waste-to-landfill (typical site waste 15-30% of materials → factory waste <2-5%) but adds module trucking. Net embodied carbon:
- Wood-framed modular: ~250-450 kgCO2e/m² operational
- Steel-framed modular: ~350-600 kgCO2e/m²
- Mass-timber (CLT) modular: ~150-300 kgCO2e/m² (Berkeley Modular UK, Sigmat, ATCO)
- Concrete modular: ~600-900 kgCO2e/m²
EC3 (Embodied Carbon in Construction Calculator) + One Click LCA + Athena IE are the industry tools for whole-building LCA per ISO 14040 + EN 15978.
11. Cost build-up
11.1 CapEx (greenfield 200k ft² plant)
| Line item | Cost |
|---|---|
| Land acquisition (rural/industrial, 25-50 acre) | $3-10M |
| Building shell + site work + utilities | $15-25M |
| Cleanroom-equivalent quality environment (climate control, lighting) | $3-5M |
| Assembly line conveyance + cranes + skate system | $5-10M |
| CFS roll-form + CNC + truss equipment | $5-10M |
| Robotic framing line (Randek, House of Design) | $5-10M (optional) |
| Sub-assembly tooling (kitchen/bath/MEP pods) | $2-5M |
| Storage + staging yard (paved, drained) | $2-5M |
| Office + design + engineering + ERP/PLM (Autodesk Construction Cloud, BIM 360, Procore, Trimble Connect) | $2-5M |
| Commissioning + first 3-batch validation + state insignia program | $1-3M |
| Total | $50-100M |
11.2 Unit economics (per 1,500 ft² module-equivalent)
| Cost driver | Per-unit cost |
|---|---|
| Materials | $80,000-130,000 |
| Direct factory labor (200-400 person-hr) | $15,000-30,000 |
| Factory overhead (utilities, depreciation, QC) | $15,000-30,000 |
| Transportation | $5,000-15,000 |
| Crane set + field connection | $8,000-20,000 |
| Field finish trades + commissioning | $15,000-40,000 |
| Foundation + site work (developer scope, not factory) | $30,000-60,000 |
| Design + permitting + project management | $15,000-25,000 |
| All-in delivered cost | $180,000-350,000 = $120-230/ft² turnkey for the factory scope; $200-300/ft² fully delivered with site work |
Conventional stick-built reference (California coastal, MA, NYC metro): $300-500/ft² ground-up. So modular targets a 30-40% cost discount AND 30-50% schedule compression — when the supply chain + sustained pipeline align. (When it doesn’t align, factories burn cash quickly — Katerra burned $2B+, FactoryOS quietly wound down.)
11.3 Headcount
- Production operators: 150-250 FTE (2 shifts × line + sub-assembly cells)
- Maintenance + facilities: 15-25 FTE
- Engineering + design (in-house BIM team): 20-40 FTE
- QC + agency liaison: 10-20 FTE
- Logistics + procurement + scheduling: 15-25 FTE
- Sales + project management + GC interface: 15-25 FTE
- Management + finance + HR + IT: 15-25 FTE
- Total: 250-400 FTE
Labor unionization: states with strong building trades (CA, NY, NJ, IL, MA) have negotiated modular factory labor agreements — IBEW for electrical, UA for plumbing, Carpenters for framing. Right-to-work states (TX, AZ, NV, FL) typically non-union with prevailing wages on government contracts.
12. Schedule
| Phase | Duration | Notes |
|---|---|---|
| Site selection + design + permitting | 9-15 mo | Industrial zoning critical; rail siding helpful |
| Construction (plant) | 12-18 mo | Pre-engineered metal building shell + slab |
| Equipment install + commissioning | 6-12 mo | Often overlaps last 6 mo of construction |
| Initial certification (state modular agency + third-party) | 3-6 mo | Per-state, sequential or parallel |
| Pilot production + agency audit | 3-6 mo | First 10-20 modules at ramp speed for audit |
| Full ramp to design capacity | 12-24 mo | Mostly demand-limited not capacity-limited |
| Total greenfield → 300 units/yr cadence | 3.5-5 years | Demand pipeline must be lined up |
13. Risk register
- Demand pipeline collapse — factory must run at >60-70% utilization to be profitable; KaterraCorporate single-customer over-concentration killed multiple sites
- Permitting + AHJ acceptance variation — local jurisdictions periodically push back on factory-built; education + relationship cultivation per region
- Crane + transport bottleneck — wide-load corridors saturated in CA Bay Area + NY metro; route surveys 30-60 days lead time
- Module-to-module tolerance creep — drift to ±1/2” or more = field rework; rigorous SPC + laser tracker QC mandatory
- State modular agency reciprocity — selling into 50 states requires multiple insignias + agency-by-agency requalification; HCD California historically the strictest
- Capital intensity vs flexibility — Highly automated lines (robotic framing, drywall robots) lock in product mix; market shifts (multifamily → single-family, urban infill → exurban) strand assets
- Wood + steel price volatility — 2020-2022 lumber doubled then halved; CFS steel up 50% then -20%. Hedging via long-term framework agreements partially mitigates
- Insurance + warranty — modular product liability sits with factory (1-10 yr major systems, structural 10-30 yr); state-by-state implied warranty + lemon laws + bond requirements
- Stick-built recovery — when conventional construction labor + materials get cheaper (recession dynamics), modular savings narrow; survival mode then requires speed-of-delivery selling
- Financing friction — module is personal property (UCC) in factory + on truck, becomes real property only after set + connection; lender comfort + draw schedules require specialized construction lenders (Bridge Investment Group, Citizens Bank Modular, Beach Point Capital, PNC Modular)
14. Adjacent
- design-modular-hospital-emergency-deployment — adjacent volumetric-modular product class (deployable hospitals + workforce camps)
- design-data-center-cooling-system — modular data-center prefab is sibling pattern (Microsoft, Meta, Google buildouts)
- design-vertical-farm — controlled-environment modular building shell
- design-utility-scale-solar-pv-plant — embedded solar + storage as factory-mounted option
- [[Engineering-and-Robotics\Engineering\steel-connection-design]] — module-to-module + module-to-foundation engineered connections
- [[Engineering-and-Robotics\Engineering\masonry-timber]] — wood + light-gauge structural framing
- [[Engineering-and-Robotics\Engineering\quality-systems-iso9001]] — ISO 9001 + state modular agency quality programs