Do I need a powerful computer for Coohom 3D design?

Coohom runs in a web browser and rendering is done on Coohom servers. A modern computer with a stable internet connection is sufficient. You do not need a dedicated GPU for the basic design work.

How many furniture items can I add to a room?

There is no hard limit, but very complex scenes with hundreds of items may slow down the editor. Most residential rooms work well with 20-50 items.

Can I use my own furniture models?

Coohom supports importing custom 3D models in select formats on paid plans. The built-in library contains thousands of furniture items from real brands.

How do I change wall colors in 3D mode?

Click on a wall surface in 3D mode, then click 'Material' in the properties panel. You can choose from paint colors, wallpapers, and textured materials.

Can I design outdoor spaces in Coohom?

Coohom is primarily an interior design tool, but you can model basic outdoor areas like patios, balconies, and decks as part of your floor plan.

How do I add ceiling designs?

Click the ceiling of any room in 3D mode to access ceiling options. You can add tray ceilings, coffered ceilings, or apply ceiling materials and crown molding.

Is 3D design available on the free plan?

Yes. Basic 3D design including furniture placement and standard materials are available for free. Advanced materials and professional rendering options require a paid plan.

How do I undo changes in 3D mode?

Use Ctrl+Z (Cmd+Z on Mac) to undo the last action. Coohom supports multi-level undo in 3D mode, just like in the 2D floor plan editor.

Coohom 3D Home Design Guide: From 2D Plan to Realistic Render

Once your floor plan is ready, Coohom lets you step into a fully three-dimensional environment where you can furnish rooms, apply real-world materials to surfaces, set up lighting, and produce photorealistic images that look like professional photography. This guide walks you through the entire 3D design workflow from entering 3D mode to exporting your final render.

Try Coohom Free

Disclosure: We may earn a commission at no extra cost to you.

Quick Answer

Transition from 2D to 3D with one click using 'Enter 3D' in the floor plan editor.
Drag and drop furniture from a library of thousands of real-brand items.
Apply materials to walls, floors, and ceilings including wood, tile, paint, and wallpaper.
Set up natural and artificial lighting for realistic renders.
Free plan includes basic 3D features; advanced rendering requires a paid subscription.

What Is Coohom 3D Home Design?

Coohom 3D Home Design is the three-dimensional design environment built into the Coohom platform. After creating a 2D floor plan, you enter 3D mode to see your space come to life with real proportions, wall heights, and room volumes. In this mode, you can walk through your design from a first-person perspective, position furniture with exact placement, and see how light interacts with surfaces in real time.

The 3D editor uses a library of over 100,000 furniture items, materials, and accessories. Many items are from real furniture manufacturers, so you can specify exactly which sofa, table, or light fixture you want. This makes Coohom useful not just for visualization but also for creating shopping lists and specifications for clients.

Step-by-Step Tutorial

Step 1: Enter 3D Mode

From your completed floor plan, click "Enter 3D" in the top toolbar. Coohom will generate the 3D environment from your 2D plan. This takes a few seconds. You will see your rooms with standard-height walls, a default ceiling, and a basic floor. Use the mouse to orbit, scroll to zoom, and right-click drag to pan around the space.

Step 2: Apply Floor Materials

Click on any floor surface. In the "Material" panel on the right, browse floor options: hardwood, tile, carpet, laminate, stone, and more. Click to apply. Adjust the material scale, rotation, and pattern layout. Different rooms typically use different flooring, so the kitchen might get tile while bedrooms get hardwood.

Step 3: Apply Wall Finishes

Click on any wall surface and choose from paint colors, wallpapers, wood paneling, brick, or stone textures. You can apply different materials to different walls within the same room for accent walls. For bathrooms and kitchens, consider adding tile to lower walls and paint to upper walls.

Step 4: Add Furniture

Open the "Furniture" panel on the left side. Browse by category (sofas, tables, beds, storage, lighting) or search by name. Click any item to place it in the room. Drag to position, use the rotation handle to orient, and adjust height if needed. Use the "AI Furnish" button to auto-populate a room based on its type and style preference.

Step 5: Set Up Lighting

Click the "Lighting" tab in the right panel. Set the time of day for natural sunlight direction and intensity. Add artificial lights by placing ceiling lights, floor lamps, or table lamps from the furniture library. Each light source has adjustable brightness, color temperature (warm or cool), and spread angle. Getting lighting right is the single most important factor for realistic renders.

Step 6: Position Camera and Render

Navigate to your desired viewpoint using orbit, pan, and zoom. Click "Render" in the top toolbar. Select resolution and quality settings. Click "Start Render." Wait for the render to complete, then download or share the result. You can save multiple camera positions and render a batch.

Common Mistakes & Fixes

Overcrowding rooms: Adding too much furniture makes rooms feel smaller and renders less appealing. Follow the rule of leaving 30-40% of floor space visible.
Ignoring lighting setup: Default lighting produces flat-looking renders. Spend time adjusting natural and artificial lights for depth and warmth.
Floating furniture: Make sure all items sit on the floor or on a surface. Check from a side angle if something looks like it is floating.

Pro Tips for Better Results

Add accessories and decor like books, plants, throw pillows, and art frames. These small details make renders look lived-in and realistic.
Use the first-person view to check furniture proportions. Walk through the space as if you were physically there to catch scale issues.
Layer multiple light sources at different heights: ceiling, eye-level, and floor. This creates a warm, professional atmosphere in renders.

Export Options

HD/4K renders: Download photorealistic images for portfolios and presentations.
360 panorama: Create immersive panoramic views for client sharing.
3D walkthrough: Generate a video tour of your design.
Furniture list: Export an itemized list of all furniture with names and dimensions.

Troubleshooting

3D editor is laggy or slow

Close other browser tabs to free up memory. Try a Chromium-based browser for best performance. Reduce the number of visible items by hiding rooms you are not working on.

Furniture disappears when entering 3D

This usually means the furniture item failed to load. Check your internet connection. Delete the missing item and re-add it from the library.

Alternatives

Homestyler: Excellent 3D design with real-brand furniture and easy sharing.
SketchUp: More technical but powerful for custom 3D modeling and design.
Roomstyler: Free browser-based 3D room designer with a large community.

Explore more in our alternatives comparison.