The Offgrid Loft // 2020 Promaster

A thoughtfully designed, full-time livable off-grid camper van built to feel less like an RV and more like a modern apartment on wheels.

This 2020 Ram ProMaster 3500 Extended High Roof was professionally converted by Oak & Grain in Missouri and has been built for long-term travel, remote work, four-season comfort, and beautiful living in wild places. It combines a spacious loft-style layout, serious Victron-based electrical system, 1,200W of solar, 12V air conditioning, a real shower, a dry-flush toilet, a large fridge/freezer, and a warm modern interior with real oak and microcement-style finishes.

Currently located in Los Angeles, California. - Delivery available.

This is a premium, move-in-ready off-grid van for someone who wants the freedom of vanlife without giving up comfort, storage, design, or daily livability.

The layout is open and apartment-like, with a raised loft bed that creates a lounge and workspace underneath. The interior allows an easy walk-through from the rear doors to the sliding door, making the van feel connected to the outdoors rather than boxed-in like many traditional camper builds.

The power system is one of the biggest highlights. The van has approximately 600W of rooftop solar plus an additional 450–600W bifacial slide-out solar panel that deploys from under the rear bed platform and can also function as a rear shade canopy.The Canopy panel also converts to portable with a 50ft long lead incase you need to keep the van closed up.

The electrical system is built around Victron components with approximately 660Ah of lithium battery capacity, making it ideal for off-grid camping, remote work, refrigeration, lighting, induction cooking, and extended travel.

Comfort features include a Dometic RTX 2000 12V air conditioner above the bed, MaxxAir roof fan, Webasto all-season heater, Kuuma hot water heater, heated indoor shower, Laveo dry-flush toilet, Dometic dual induction cooktop, Isotherm fridge/freezer, deep stainless sink, filtered water tap, CafeLuxe super-automatic coffee machine, USB-C outlets throughout, dual swivel front seats, and a refined interior with real oak cabinetry, sealed concrete-style countertops, accent lighting, and thoughtful storage throughout.

This is not a stripped-down adventure van. It is a full-time-capable tiny home built for comfort, design, and serious off-grid use.

1. 2020 Ram ProMaster 3500 Cargo Van
2. 159" wheelbase extended body
3. High roof
4. Dry Sage Green exterior wrap
5. 3.6L V6 engine
6. 6-speed automatic transmission
7. Clean title
8. 2 previous owners
9. Recently serviced by RAM
10. Falken All-Terrain tires
11. Plenty of tire tread
12. Up to approximately 1,200W total solar potential
13. 600W rooftop solar
14. 450–600W bifacial slide-out solar panel under rear bed
15. Slide-out solar also functions as a rear shade canopy
16. Victron-based electrical system
17. Approximately 660Ah lithium battery capacity
18. Victron 3000W inverter/charger system
19. Dual Victron MPPT solar controllers
20. DC-to-DC alternator charging
21. Shore power capability
22. Utility plug-ins from outside
23. Dometic RTX 2000 12V air conditioning
24. Webasto all-season heater
25. MaxxAir roof fan
26. Kuuma hot water heater
27. Heated indoor wet bath
28. Low-water-use steam/mist-style shower setup
29. Laveo dry-flush toilet
30. 20-gallon fresh water tank
31. 10-gallon grey water tank
32. Dometic dual induction cooktop
33. Isotherm fridge/freezer
34. Deep stainless sink
35. Filtered water tap
36. CafeLuxe super-automatic coffee machine with milk frother
37. Loft-style raising bed
38. Lounge and workspace underneath bed
39. Queen-size memory foam bed
40. Dual swivel front seats
41. Upgraded captain’s chair
42. Front workstation/table setup
43. Real oak wood finishes
44. Sealed concrete-style countertops
45. Microcement-style wall finishes
46. USB-C outlets throughout
47. 12V flush puck lighting
48. Accent lighting
49. Exterior perimeter/patio lighting
50. Dual-door bug screens
51. Thermal blackout curtains and window covers
52. Rear-mounted spare tire
53. Rear ladder
54. Falken all-terrain tires
55. Front and rear Line-X protection
56. Hidden rear safe/storage cabinet for valuables
57. 2x 180 degree remote viewable and motion detection security cameras

The interior was designed around livability. The raised bed creates a true loft-style setup, giving you a proper sleeping area above and usable living space below.

The lower lounge works as a seating area, workspace, gear zone, or quiet place to relax when the weather keeps you inside. It also converts to a bed on the floor, sleeping two additional people.

Unlike many fixed-bed van layouts, this design keeps the living space open and usable throughout the day. The walk-through layout from the rear doors to the sliding door makes the van feel more spacious and more connected to the environment you're parked in.

The finishes are one of the van’s standout details: real oak cabinetry, soft-close storage, concrete-style countertops, microcement-style walls, integrated lighting, and a clean modern design that feels warm without being overly rustic.

This van is set up for comfort in a wide range of conditions.

Climate and comfort features include:

1. Dometic RTX 2000 12V air conditioner above the bed
2. Webasto all-season heater
3. MaxxAir roof fan
4. Kuuma hot water heater
5. Heated shower and hot water at the kitchen
6. Thermal blackout cab curtains
7. Thermal window covers for 360-degree privacy and insulation
8. Insulated sliding and rear doors
9. WiFi temperature and humidity monitor

The kitchen is designed to feel more residential than a typical camper setup, with induction cooking, large refrigeration, hot and filtered water, and generous prep space, we had cooking in pairs in mind when building this.

Kitchen features include:

1. Dometic dual induction cooktop
2. Isotherm fridge/freezer
3. Deep stainless sink
4. Filtered drinking water tap
5. Hot water at kitchen sink
6. Dual prep stations
7. Sealed concrete-style countertops
8. CafeLuxe super-automatic coffee machine with milk frother
9. Built-in mug storage
10. Soft-close cabinetry
11. Real oak finishes
12. Integrated storage

The van includes a complete onboard water system designed for comfortable off-grid living, daily use, and low-water travel.

Unlike many camper vans that rely on outdoor shower attachments or basic sink-only setups, this build includes an indoor wet bath with hot water, a deep kitchen sink, filtered drinking water, grey water storage, and a low-water-use shower setup that makes the van much more livable for extended trips.

Water and plumbing highlights include:

1. 20-gallon fresh water tank
2. 10-gallon grey water tank
3. Kuuma hot water heater
4. Heated indoor shower
5. Low-water-use steam/mist-style shower setup
6. Indoor wet bath
7. Nautilus self-wiping shower door
8. Laveo dry-flush hideaway toilet
9. Built-in vanity shelf
10. Deep stainless kitchen sink
11. Filtered drinking water tap
12. Hot water at kitchen sink
13. Grey water storage system
14. Easy-access plumbing design
15. Built for off-grid camping and full-time vanlife
16. Electric opening grey water valve

The water system is one of the features that makes this van feel like a true tiny home rather than a weekend-only camper. Between the hot shower, dry-flush toilet, filtered water tap, deep sink, and onboard fresh/grey water tanks, the van is set up for comfortable travel without needing to depend on campgrounds, gyms, or public facilities every day.

The van has thoughtful storage throughout, including soft-close cabinetry, lounge storage, rear gear space, and a hidden valuables cabinet.

Storage and utility features include:

1. Wide, deep soft-close drawers
2. Upper storage cabinets
3. Under-couch storage
4. Rear gear/storage area
5. Hidden safe/storage cabinet for valuables
6. Rear-mounted spare tire
7. Rear ladder
8. Full spare and jacks
9. Battery jump-start device
10. Sliding door half-stop
11. Front and rear USB-C power access
12. Exterior perimeter lighting

The van is based on a 2020 Ram ProMaster 3500 Extended High Roof platform. It is easy to drive compared with larger Class B RVs or truck camper setups, while still offering a spacious interior and full-time-capable build.

Exterior and vehicle highlights include:

1. Bright White exterior
2. 159" extended high-roof platform
3. Falken all-terrain tires
4. Rear-mounted spare tire
5. Powder-coated rear ladder
6. Front and rear Line-X protection
7. Exterior patio/perimeter lighting
8. Dual-door bug screens
9. Vinyl-wrapped exterior elements
10. Factory backup camera
11. Rear park-assist system
12. Power folding/heated mirrors
13. Cruise control
14. Security alarm
15. Heavy-duty suspension

Original factory window sticker highlights include:

1. 2020 Ram 3500 ProMaster Cargo Van
2. 159" wheelbase extended high-roof body
3. Bright White Clear-Coat exterior
4. Black interior
5. Cloth bucket seats
6. 3.6L V6 24V VVT engine
7. 6-speed automatic 62TE transmission
8. ParkView rear backup camera
9. Electronic stability control
10. Brake assist
11. Hill start assist
12. All-speed traction control
13. Electronic roll mitigation
14. Trailer sway damping
15. Tire pressure monitoring display
16. Anti-lock 4-wheel heavy-duty disc brakes
17. Remote keyless entry
18. Heavy-duty suspension
19. 24-gallon fuel tank
20. 180-amp alternator
21. Engine oil cooler
22. Auxiliary transmission oil cooler
23. Uconnect 3 with 5-inch display
24. Bluetooth
25. Steering-wheel-mounted audio controls
26. USB and aux media hub
27. Air conditioning
28. 260-degree opening rear doors
29. Factory options included power folding/heated mirrors, daytime running lights, security alarm, speed control, ParkSense rear park-assist, passenger double seat, and wood floor

Most camper vans force a compromise: good design but weak utilities, or strong utilities but a cramped RV-style interior. This build does both well.

You get a serious off-grid electrical system, 12V air conditioning, heat, hot water, indoor shower, dry-flush toilet, large refrigeration, induction cooking, and enough solar and battery capacity to stay out longer. At the same time, the van still feels warm, open, and beautifully designed.

It is ideal for:

1. Full-time vanlife
2. Remote work
3. Long road trips
4. Off-grid camping
5. National park travel
6. Surf, ski, desert, and mountain trips
7. Couples or solo travelers who want comfort
8. Buyers who want a finished, premium build instead of starting from scratch