How to Render Your House Design with AI – Photorealistic Images from Your Plan7Architect 3D Model

Yes. You design the house in Plan7Architect as usual, set up a 3D view with the camera angle, sun position and shadows you want, export it as an image and give it to an AI image model together with a short prompt. A few seconds later you get a photorealistic architectural rendering of exactly your design. For the images on this page we used Nano Banana 2, Google’s image model, which you can also use free of charge in the Gemini app within its daily limits.

The important point: the AI does not design anything. The house, its dimensions, the roof, every window and door come from your Plan7Architect model. The AI only adds light, materials, vegetation and atmosphere. That is why this workflow gives you a picture that matches your real plan, which a pure text-to-image generator cannot do.

Modern villa with pool, designed in Plan7Architect. The rendered image is AI-generated.

Infographic: From Floor Plan to AI Rendering

1Draw the floor plan
Walls, doors, windows and furniture in Plan7Architect

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2Export the 3D view
Roof, materials and shadows are created automatically, save the view as an image

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3Render with AI
Upload the image with the prompt to Nano Banana 2, done in seconds

The same house in all three steps. The image in step 3 is AI-generated.

What You Need

• Your project in Plan7Architect with walls, roof, windows, doors and materials. Terrain, paths, a terrace or a pool make the result more convincing.
• An image of the 3D view, saved with the image export of Plan7Architect or as a screenshot.
• Access to an AI image model that can edit an uploaded image. We recommend Nano Banana 2. It is available in the Gemini app (free with daily limits) and on platforms that bundle several AI models. We created our images on Artlist, which offers Nano Banana 2 together with other image and video models.

Step by Step: From 3D Model to AI Rendering

1. Finish the design first. The AI keeps what it sees. A missing window or a wrong roof in the 3D view will also be missing or wrong in the rendering.
2. Choose the camera. Switch to the 3D view and set the angle you want to show: eye level from the street, a corner view or an aerial view of the whole lot. Eye level at about 5 ft 3 in (1.60 m) looks most natural.
3. Set sun and shadows. Plan7Architect calculates shadows for a given position of the sun. Pick a time of day that gives clear shadows on the facade. The AI takes the light direction from your image, so good shadows in the 3D view give a more realistic rendering.
4. Export the image. Save the 3D view as an image in the highest resolution available, or take a screenshot. Crop away toolbars, menus and the mouse pointer.
5. Upload it to the AI. In the Gemini app or on a platform with Nano Banana 2, attach the image and paste the prompt below.
6. Compare and repeat. Put the result next to your 3D view and check windows, doors, roof and balconies. If something has changed, generate again or add a sentence to the prompt.

Modern house on a slope. Camera angle and building stayed the same, the AI added light, materials and landscaping.

The Prompt to Copy

This prompt worked best in our tests. It tells the AI to change the look of the image, not the building.

Turn this 3D view of a house into a photorealistic architectural
photograph. Keep the building exactly as it is: the same shape, roof,
number and position of windows and doors, balconies, materials and
colors, and the same camera angle and framing. Do not add, remove or
move any part of the building.
Improve only the rendering: realistic materials, natural daylight with
soft shadows from the same direction as in the image, a realistic sky,
grass, trees, plants and paving.
No text, no watermark, no people.

You can add one line for the mood you want, for example late afternoon sun, overcast day, dusk with warm light in the windows or snow in winter. Ask for one change at a time and keep the rest of the prompt as it is.

Which AI Model to Use

We compared Nano Banana 2 and Nano Banana Pro on the same ten Plan7Architect projects. Nano Banana Pro produced slightly more dramatic images, but it changed the camera angle more often and in one case left out a balcony. Nano Banana 2 kept the buildings more faithfully, which is what matters when the picture has to show your real design. Other image models work too, as long as they can edit an uploaded image instead of only creating new ones from text.

Common Problems and How to Fix Them

House with glass gable. The rendered image is AI-generated.

Rendering Floor Plans with AI

The same works with a 2D floor plan. Export the furnished floor plan from Plan7Architect as an image and ask the AI to turn it into a colored top-down presentation plan with wood floors, tiles, furniture and garden. This kind of plan is popular for real estate listings and brochures. Use the floor plan with dimensions from Plan7Architect for building, and the AI version only for presentation.

Room labels in an AI floor plan can be wrong, so check them before you publish the image.

What AI Rendering Can and Cannot Do

• It shows your design the way a photo would: for your family, your builder, a bank or a property listing.
• It is fast and cheap: a few seconds per image, free within the Gemini limits or a few cents per image on paid platforms.
• It is not a plan. Dimensions, wall thicknesses and building details stay in your Plan7Architect drawings.
• It can invent details. Always compare the result with your 3D view, and mark AI images as visualizations when you use them to sell or rent a property.

Tip: For walk-throughs, videos and full control over every material, export your model to Twinmotion. Plan7Architect includes the export, and our architecture rendering overview explains the options.

More Examples

Our gallery shows ten Plan7Architect projects side by side: the original 3D view and the AI rendering made with the workflow on this page.

Timber house with pond. The rendered image is AI-generated.

If you do not have a 3D model yet, start with the plan: draw the walls in Plan7Architect or import an existing floor plan image and trace it. The 3D model is created automatically while you draw. Another way to combine AI with your plan is described in creating a material list with ChatGPT or Claude.

Plan7Architect gives you the floor plans, sections, elevations and the 3D model that every rendering starts from. It is a one-time purchase with a 14-day money-back guarantee.