| VanLab | NV200, City Express, Transit Connect, Sprinter, Transit, ProMaster, Express, E-Series | Complete flat-pack interior architecture: flooring, kitchen, bed, bench, table. Add-on insulation, panels, plumbing. The “IKEA of van kits.” | From $5,500 (Sprinter 144 / Transit 148 / ProMaster 159 from $9,995) | Assembly ~1–4 days. Ships nationwide; install available at their CA shop. |
| Timber Van Kits | Sprinter, Transit, ProMaster (high-roof) | Complete DIY kits plus a deep à-la-carte catalog: cabinets, panels, beds, water, heating, seating, L-track. | From $15,995 (cabinets à la carte ~$255–$599; installed conversions from $29,985) | Ships free to your door. Note: no DIY kits for short- or medium-roof vans — confirm roof height. |
| The Vansmith | Sprinter 144/170, Transit | CNC marine-grade Baltic birch galleys, overhead cabinets (54"/60"), bed platforms, benches with toilet cutout. Full kits launching. | À la carte (full kits coming) | Basic hand tools; 1-yr material warranty. A build shop first — you can see kits installed in Boulder, CO. |
| Vantopia Vans | High-roof Sprinter, Transit, ProMaster | Bed base, wall/ceiling panel kits, combo modules, bathroom module — buildable in stages. | From $8,450 (modules from $1,150) | Affirm financing offered. Confirm which modules fit your length. |
| Vamonos Vans (“Vamos”) | Cargo vans (San Diego–built) | Riveted aluminum “Space Frame” cabinetry — lighter, squeak-free, durable. Modular, customizable, aimed at first-time builders. | New / launching | Step-by-step video guides. Confirm availability & pricing direct. |
| Serg Supply (“Surge”) — cabinetry line | Sprinter, Transit, ProMaster | CNC paint-grade birch kitchen cabinets, sink cabinets, overheads, wall + ceiling panels; multiple finishes. (Foundation kit listed in Tier 4.) | À la carte | Made in CA; install available. Free shipping on many items. |
| Trail Kitchens | Sprinter, Transit, ProMaster; Metris/Sienna minivan | Riveted-aluminum galley & wheel-well units with marine water systems, overhead cabinets, minivan kitchen. Complete interiors coming. | À la carte | Bolt-on systems; squeak-free aluminum. |
| Roost Vans | Sprinter, Transit (2007+) | Signature bamboo upper cabinets (~24"), lockable, on a Smooth Rail mounting system; finished or unfinished. | À la carte | Free shipping (contiguous US). Mounting rail required. |
| Alpine Van Works | Sprinter, Transit, ProMaster, Toyota trucks, Jeep | Upper cabinets and components across an unusually wide vehicle range. | À la carte | Component-level; build the rest around it. |
| KnightVision Development | Sprinter, Transit, ProMaster | Collapsible / space-saving cabinets that fold flat when not in use. | À la carte | Niche storage solution; pair with a fuller kit. |