Frequently asked questions.

There is no single best, it depends on your budget, terrain, and how you travel. As a balanced all-rounder the Ford Transit is hard to beat; the Sprinter leads for off-road and resale, the ProMaster for value and easy DIY, and a box truck for maximum living space. See the full platform comparison or let the Build Planner match one to your answers.

Most DIY builders buy used to save money and avoid depreciating a new vehicle you are about to modify. A well-maintained van with a documented service history and no rust is usually the sweet spot. Inspect for prior fleet abuse, and budget for tires and suspension.

Only if you genuinely travel snow, sand, or rough forest roads. For pavement and light dirt, rear- or front-wheel drive with good tires is plenty. AWD (Transit) covers most adventure use; true 4x4 (Sprinter) is the benchmark for serious off-road, at a real cost premium.

If you want to stand up inside, get the high roof, it is the single biggest livability upgrade. A low roof is stealthier and fits more garages, but you will be hunched over. Standing room is standard on the high-roof vans we compare.

Widely variable. A basic weekend build can be $8k–20k on top of the vehicle; a comfortable DIY build $20k–50k; high-end DIY $50k–100k; and a professional build $100k+. The vehicle itself is often the largest single line. Try the budget calculator or the Build Planner for a personalized estimate.

A DIY build is commonly a few months of part-time work, often 300–700+ hours. At weekends (~8 hrs/week) that can be a year or more; full-time it might be 8–12 weeks. A professional shop typically has a lead time of a couple of months.

Yes, many people do, one system at a time. The trickiest and most safety-critical part is the electrical system; if you are not confident, have the high-voltage, shore-power, and battery work inspected or done by a professional. Our guides and the resource library point you to the best tutorials.

Beyond the obvious systems: tax, title, registration, insurance, tires, suspension upgrades, tools and consumables, a fire extinguisher and alarms, and a contingency for the things you redo. Budget roughly 10–15% extra for surprises.

Add up your daily watt-hours and work backward. A common two-person build lands around 300–600Ah of lithium and 300–900W of solar. Use the battery & solar calculator to size it from the appliances you actually run.

Multiply people × gallons per day × days between fills. Two people often carry 20–40 gallons of fresh water. Remember water weighs 8.34 lb per gallon, so size it for how you actually travel, the water calculator helps.

A diesel (or gas) air heater is the standard for cold and four-season builds: it is efficient and, because combustion is sealed and vented outside, it adds no moisture indoors. Always pair any combustion appliance with a working carbon-monoxide alarm.

Three levers: reduce moisture at the source (run a roof fan while cooking and showering), heat with a dry source (diesel rather than an unvented flame), and build a wall that can dry rather than trap water against the metal. Good insulation and constant low-level ventilation do most of the work.

Not always. In mild or dry climates, shade, reflective window covers, insulation, and a roof fan handle summer heat. In humid heat, or if you cannot move to cooler ground, a 12V mini-split helps, but it is a heavy electrical load that usually needs a bigger battery and solar array.

It varies enormously by city and by land. Overnight parking, boondocking, and stealth-camping rules differ everywhere, and some places restrict sleeping in a vehicle. Learn the local rules before you rely on a spot, and use apps like iOverlander and Campendium (in our resources) to find legal places.

A converted cargo van sits in a gray area. Standard commercial or auto policies may not cover a build; ask your insurer specifically, and consider an RV or converted-vehicle policy. Some states offer an RV/motorhome reclassification with specific requirements. Keep receipts and photos of the build.

Fill fresh water at campgrounds, spigots, and some gas stations; charge via solar, the alternator while driving, or shore power at campgrounds; and dispose of gray water only at approved dump stations, never on the ground.

Yes. The vehicle comparison, calculators, resources, and the Build Planner are free to use. We may add optional accounts or premium features later, but the core tools stay free.

They are careful estimates for planning, not guarantees. Prices, specs, and sizing vary with your exact vehicle, components, and location. Always verify against manufacturer data and local codes before buying or building. See our Terms.

The Quick Planner asks a short set of questions for a fast recommendation. The Advanced Planner goes deeper, module by module, and generates a full build dossier with systems, budget, timeline, and a step-by-step build guide tailored to your answers.