We Turn Floor Plans into Living Rooms (Why We Built Foursite)

We did not start in interiors. We started in code. APIs, infra, and the usual SaaS buzzwords.

But a pattern kept showing up in real estate decks.

So many screenshots were just 2D floor plans. Or rough Blueprints.

These were meant only for “back office.” Yet every real decision seemed to start there.

We asked a simple question.

What if any team could convert floor plan to 3D in minutes.

What if you could go blueprint to 3D without a 3D background.

What if 2D to 3D was just “upload and wait a few seconds.”

Foursite, from VirtualSpaces, is our answer.
You upload 2D floor plans.

We parse them. We build a 3D Visualization shell.

Walls.

Openings.

Room types.

Then we let you explore that space with AI interior design and AI interior décor on top.

From there, it gets fun. You can trigger AI virtual staging. You can use Virtual Staging to instantly furnish spaces.

You can push AI visualization or AI 3D visualization to try multiple interior moods.

A living room can be calm and minimal in one scene. Dark and cinematic in the next.

Same plan. Same structure. Different interpretation. New drama.

We care a lot about honesty here.

So we always start from 2D floor plans and Blueprints.

We convert blueprint to 3D, not fantasy.

That means AI interior decor sits on a solid base.

What you see lines up with what could actually be built.

We built this because we watched designers and founders juggle too many tools.

One app for CAD. Another for 3D. Another for rendering. And then someone else for Virtual Staging.

Every hand-off slowed down decisions.

With Foursite, we want teams to stay in flow.

Think “upload, style, share.” Not “export, convert, chase a freelancer.”

We see Foursite as infrastructure.

Give us floor plans. We give you a reusable 3D layer that powers AI Visualization, pre-sales decks, and fast design iterations.

If you care about residential real estate, if you live in floor plans all day, we built this for you.

We are still early. We are still listening.

But the feeling when a flat plan becomes a home you can walk through never gets old.

Read more: Interior Design’s 70:30 rule and how Foursite enhances designers use of it