Sweet Home 3D is a free, open-source application from eTeks that helps homeowners, students, and hobbyists plan interior spaces. You draw walls, doors, and windows on a simple 2D plan, then drag furniture from a built-in catalog onto the layout while a synchronized 3D view updates in real time, making it easy to test layouts before moving actual furniture.
Why Sweet Home 3D Is a Popular Free Alternative to Paid Design Software
Commercial interior-design suites can be expensive or subscription-based, which is part of why Sweet Home 3D has stayed popular for over a decade: it is completely free and open source, runs comfortably on modest hardware, and does not require an account or subscription to use every feature. Its combined 2D/3D editing view means changes to the floor plan appear instantly in the 3D scene, which is friendlier for non-designers than switching between separate modeling and rendering tools.
Sweet Home 3D Features
- 2D Floor Plan Editor — draw walls, rooms, doors, and windows to scale with simple drag-and-drop tools.
- Real-Time 3D Preview — watch the 3D view update instantly as you edit the 2D plan.
- Furniture Catalog — place and resize hundreds of included furniture and object models.
- Custom Textures and Colors — apply colors, patterns, or imported textures to walls, floors, and objects.
- Photo-Realistic Rendering — generate higher-quality still images of a finished design.
- Virtual Walkthrough — navigate the 3D model from a first-person camera to check sightlines.
- Import Custom Models — add furniture from external SH3D or OBJ files to the catalog.
- Multi-Level Plans — design multi-story homes with separate, aligned floor plans.
How to Install Sweet Home 3D on Windows
- Open the official download page using the button on this page, which links to sweethome3d.com.
- Pick the version you need — the Windows/macOS/Linux desktop installer, a portable ZIP, or the browser-based online edition.
- Run the installer and follow the setup wizard's default prompts.
- Launch Sweet Home 3D and start a new plan from the File menu.
- Import the default furniture catalog if prompted, so pieces are ready to drag onto your plan.
Is Sweet Home 3D really free?
Open Source. Sweet Home 3D is free, open-source software released under the GNU GPL, with no paid tier, ads, or account requirement for the desktop application.
How to download Sweet Home 3D safely
Use the request button on this page and we will email you the current link for www.sweethome3d.com — the publisher's own website — so you receive the authentic build. We do not host, mirror, patch or repackage this software in any way.
Avoid third-party "download manager" sites offering Sweet Home 3D. They commonly wrap the genuine installer in their own bundler, which is how adware and browser hijackers get onto a machine that the user believed was clean.
Alternatives to Sweet Home 3D
Other free photo & graphics software worth comparing before you decide:
Blender
A free, open-source 3D creation suite for modeling and rendering.
Frequently asked questions
Is Sweet Home 3D completely free?
Yes, Sweet Home 3D is free and open source under the GNU GPL license, with no paid upgrade required for its core features.
Can Sweet Home 3D design multi-story houses?
Yes, you can create multiple aligned floor levels and stack them to plan multi-story homes.
Does Sweet Home 3D work without an internet connection?
Yes, the downloadable desktop version runs fully offline; only the separate browser-based edition needs a connection.
Can I import my own furniture models into Sweet Home 3D?
Yes, custom furniture in SH3D or compatible OBJ format can be imported and reused in the catalog.
What file formats can Sweet Home 3D export to?
It can export plans as images, PDF, and 3D formats, and can generate photo-realistic rendered views of a design.
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