Home Artificial Intelligence AI Tools for Architects From Site Outline to 3D Model to Final Renders with Rendair

From Site Outline to 3D Model to Final Renders with Rendair

A house develops in seven steps with Rendair: a footprint sketched over a site photo, a bubble diagram, a floor plan, an overhead render, a generated 3D model, an eye-level view and a rendered section.

Elif Ayse Sen10 November 20263 Mins read1

From Site Outline to 3D Model to Final Renders with Rendair

Image courtesy of Rendair.

Table of Contents Show

A house can begin with a few lines over a site photo. In this example, the first sketch places the building around a pool. A bubble diagram maps how the rooms connect, a floor plan turns those relationships into a layout, and a 3D model lets you see the house from the terrace or cut through it in section.

Here’s how the project develops across seven steps, and which Rendair tools you can use along the way.

1. Sketch the building footprint on the site

Open Sketch to Render or Floor Plan to Render and upload a site photo. Use the sketching tools to trace the proposed footprint directly over the image. In this example, the outline wraps around the pool, giving the living spaces an outdoor area to face.

Proposed house footprint drawn in grey beside a blue pool outline over an aerial desert site photo — The proposed footprint and pool sketched over the site. Image courtesy of Rendair.

2. Map the rooms and circulation

On the sketch, use bubbles to mark the main spaces and arrows to show how people move between them. Here, the diagram connects the living room, kitchen, dining area, and outdoor lounge while showing where the two bedrooms fit. It’s a quick way to test whether the rooms relate to one another as intended.

Hand-drawn bubble diagram linking living room, kitchen, dining, two bedrooms, pool and outdoor lounge with arrows — A bubble diagram showing room relationships and routes through the house. Image courtesy of Rendair.

3. Develop the diagram into a floor plan

Replace the bubbles with a clear drawing of walls, openings, and furniture. You can develop it by hand or in your usual drafting software, then bring it into Rendair. In this plan, the kitchen island and dining table help explain how the shared spaces are used, while the terrace connects the house to the pool.

Furnished floor plan of a single-storey house with kitchen island, dining table, bedrooms and pool terrace over the site — The developed floor plan with furniture, the pool, and outdoor seating. Image courtesy of Rendair.

4. Create a realistic overhead view

Upload the drawing to Floor Plan to Render and describe the materials and atmosphere you want to explore. The overhead render in this example uses warm timber floors and stone paving to make the transition between interior and terrace easy to read. This image is useful when a client wants to understand the layout and get a feel for the space at the same time. Explore Floor Plan to Render.

Rendered overhead view of the house interiors with timber floors, a stone terrace and the pool in a desert setting — A rendered overhead view showing the interiors and pool terrace together. Image courtesy of Rendair.

5. Generate a 3D model from the plan

Upload the same floor plan to Floor Plan to 3D Model. Add a short prompt for details the plan leaves open, choose Draft, Standard, or Detailed, and generate the model. Then rotate it to see how the rooms, glazing, and outdoor spaces relate. In the carousel, a view from the pool side reveals how the house opens onto the terrace. Watch the Floor Plan to 3D Model tutorial.

The generated 3D model view. Video courtesy of Rendair.

6. Render a viewpoint or export the model for editing

Click Render above the generated model or open 3D Model to Render. Set the camera angle you want, describe the materials and lighting, and generate the image. An eye-level view from the terrace, for example, can show what it feels like to approach the living room from outside. Explore 3D Model to Render.

If the geometry needs further work, download the model as a GLB and open it in any 3D software like Rhino, where you can check it against the plan and refine the design.

Exported 3D model of the house open in the Rhino perspective viewport — The exported model open in Rhino for further editing. Image courtesy of Rendair.

7. Visualize the project in section

Set up a section cut in your modeling software and frame the view around the spaces you want to explain. Bring an image of that view into Image to Render to explore finishes, light, and landscape. Here, the cut puts the pool, dining area, and bedroom in one frame, showing their levels and their relationship to the outdoors.

Rendered section through the house showing the pool, dining area and bedroom opening onto a desert garden — A rendered section through the pool, dining area, and bedroom. Image courtesy of Rendair.

Try the workflow with your own site sketch or floor plan. Get started with Rendair.

Written by

Elif Ayse Sen

Elif Ayse Sen is a senior architecture writer at illustrarch. A trained architect with a B.Arch from Altınbaş University, she covers interior design, architecture schools and education, and residential design, and has written hundreds of articles for the publication.