Modular Home and ADU 3D Configurator for US Manufacturers
By Facundo Campo, 3D quoting tool developer
In short: A modular home and ADU 3D configurator lets buyers lay out their home room by room —bedrooms, bathrooms, kitchen, porch, finishes— and walk through it in 3D, so the manufacturer gets inquiries with a plan already thought through.
A modular home and ADU 3D configurator is a web tool where buyers put together their home by choosing rooms, layout, roof and finishes, and see it in 3D, outside and inside, while they decide. In the US it fits three products that sell in similar ways: the modular home, the accessory dwelling unit built in the backyard of an existing house (ADU), and the tiny home, on a foundation or on wheels.
Buyers think in rooms, not modules
A modular home factory thinks in modules: boxes that leave the plant on a truck. The buyer doesn't. They think "two bedrooms, one bath, a kitchen open to the living room and a porch for morning coffee." For an ADU it's "a place for my mom out back" or "something I can rent out." For a tiny home, "the bare minimum, but done right."
Right now, your sales rep's job is to translate that into the models in your catalog and, when none of them fit, into a change somebody has to draw. That back-and-forth is where you lose weeks, and buyers.
A room-by-room configurator does the translation on screen. The buyer builds what they want, inside your rules, and you get a plan you already know how to build.
What the home configurator already does
The prefab home configurator on this site puts the house on a neighborhood lot, with a sidewalk and a street. It has a floor plan editor where you can:
- Drag rooms around, make them bigger or smaller, and add new ones.
- Edit doors, windows and the entrance, and move furniture.
- Add a second floor with stairs, choosing which way they go up.
- See dimensions, and undo and redo.
It also has a flat roof or a metal roof (single-slope or gable); stucco and an accent color; tile, porcelain or wood floors; brick, stone or wood finishes inside and out; a porch, a pool, a fence (solid wall, wire or iron); real bathroom, kitchen, laundry and closet furniture; and lighting. There's a Walk mode to move through the house at eye level, night view, layers and a share link.
It's a house designed for the Argentine market, in meters, and it doesn't show prices. But it's the same engine I'd build a configurator for a US manufacturer on: your models, your module rules, your finishes. There's a step-by-step guide to the home configurator if you want a tour.
ADUs: there's already a house on the lot
ADUs have one twist: the buyer already owns a house and a backyard with real dimensions. An ADU configurator can start by asking for the space available out back and limit the options to what fits. It can also show the unit on a lot with a sidewalk, which the home configurator already does.
ADU rules change by state, county and city: setbacks, maximum size, height. Software doesn't settle that. The configurator can respect whatever limits you set for each area, but it's always worth checking with a local professional.
Tiny homes: little space, lots of decisions
In a tiny home every inch counts, so buyers want to see everything first: where the bathroom goes, whether a kitchen with an oven fits, how you get up to the loft. The floor plan editor with real furniture and the Walk mode handle exactly that. For a tiny home builder, the upside is that the buyer shows up sold on a layout that already fits the trailer or the foundation, because the configurator won't let them build anything else.
What you get as the manufacturer
- Inquiries with the plan already built. Your rep gets a floor plan, a list of finishes and a picture, not "how much is a house?"
- Customization with limits. Buyers change what you allow them to change, and nothing else. I go into that in turning building rules into software.
- Family decisions, made faster. The house goes out as a link, and everyone walks through it on their own phone.
- Production without guesswork. What was sold arrives as an exact configuration. More in from quote to production.
Working with me remotely
I'm Facundo Campo, a software developer based in Quilmes, Buenos Aires. I work remotely, in English and Spanish; Argentina is on UTC−3, so my day overlaps almost entirely with yours anywhere in the US. You send your floor plans, models, photos and finish options; we talk on video calls, and each step reaches you as a link you can try in a browser. The configurator runs in English, in feet and inches and in dollars, as part of the project.
If you build modular homes, ADUs or tiny homes and want to see your models in 3D, message me on WhatsApp at +54 9 11 6193-3176 or email facundocampo100@gmail.com. I answer in English and Spanish. You can also read about custom 3D quoting software.
Frequently asked questions
Can buyers design any house they want?
No, and that's a good thing. They design inside your rules: module sizes, possible rooms, available finishes. That way, everything they configure is something you can build.
Does it work for a tiny home on wheels?
Yes, as custom work. The rules change (maximum trailer width and length, weight, loft), but the idea of building room by room and walking through it is the same.
Can the ADU be shown next to the existing house?
That can be built. Today the home configurator already shows the house on a lot with a sidewalk and street; adding the existing house as a reference is part of an ADU project.
Does it show prices?
The public configurator doesn't. In a custom build, you decide whether to show a ballpark price or have it appear only when a sales rep is logged in. Either way, it comes from the same configuration.
