Sweet Home 3D
Free open source interior design app from Milan to draw a floor plan, furnish it and walk through it in 3D
Quick Overview
| Company | Space Mushrooms srl |
|---|---|
| Category | Floor Plan Software |
| Headquarters | Milan, Italy |
| Founded | 2021 (company); software older |
| EU Presence | Yes - Italy (EU) |
| Data Location | Desktop app stores files locally; website hosted by OVH in Roubaix, France |
| Open Source | GNU GPL |
| GDPR Compliant | Yes |
| Self-Hosting | Desktop application, runs locally |
| Main Features | Walls and rooms in 2D, 3D aerial and virtual visitor views, 10,000 models and 400 textures, photo and video rendering, PDF and image export, plug-ins |
| Pricing | Free; open source under the GNU General Public License |
| Best For | Individuals who want a no-cost, offline floor plan and interior planner |
| Replaces | SketchUp |
Detailed Review
Sweet Home 3D is an interior design application that lets you draw a house plan, arrange furniture and view the result in 3D. The download includes over 10,000 3D models and 400 textures, and the website lists versions for Windows, macOS, Linux, iOS and Android plus an online version that runs in a WebGL browser.
Its legal notice says the software and website are published by Space Mushrooms srl, Via Melzi d'Eril 29, 20154 Milan, Italy, an independent company founded in 2021. The site states it is an open source project distributed under the GNU General Public License and hosted by OVH in Roubaix, France.
What it draws
You can draw straight, round or sloping walls with exact dimensions, add doors and windows, annotate with room areas and dimension lines, and place furniture from a searchable catalogue. Colours, textures, sizes and positions of walls, floors, ceilings and furniture can be changed.
The 2D plan and the 3D view update together, and you can switch between an aerial view and a virtual visitor.
Rendering and export
It creates photorealistic images and videos with light and sunlight control by time of day and location. Plans export as PDF, bitmap or vector graphics, videos and 3D files, and you can import a blueprint to trace walls over.
The features page describes a single-user design application and lists no real-time team collaboration.
Privacy and licence
The vendor says it collects no private data on the website except from forum users, keeps traffic logs private and shows no advertising. The mobile versions include Firebase Analytics for anonymous usage statistics and crash reports, per its privacy page.
Version 7.5 was listed with a last update of 5 May 2025.
Limitations to Consider
It is a single-user design application with no collaboration features listed. Rendering and furniture styling are more basic than paid cloud planners. Mobile apps include Firebase Analytics. It does not produce construction documents or BIM data.
Who Should Use Sweet Home 3D
Homeowners, students and hobbyists who want a free, offline planner and are comfortable with a desktop application.
Pros and Cons
Pros
- Free under the GNU GPL
- Works offline on desktop
- Runs on Windows, macOS, Linux, iOS and Android
- 10,000 models and 400 textures included
- Italian company named in a legal notice
Cons
- No team collaboration listed
- Less polished visuals than cloud planners
- Mobile apps use Firebase Analytics
- No BIM or construction documents
Alternatives to Sweet Home 3D
Other European floor plan software worth comparing before you decide:
Floorplanner
Netherlands · Browser-based 2D and 3D planner from Rotterdam, free for up to 5 projects
RoomSketcher
Norway · Floor plans, 3D photos and 360 views from an Oslo-area company
Cedreo
France · Home design and 3D renderings for builders and remodelers
Planner 5D
Lithuania · Room planner for web and mobile with published euro pricing
See all European floor plan software or compare them directly against SketchUp on our alternatives page.
Frequently Asked Questions
Yes. The site describes it as free interior design software and an open source project distributed under the GNU General Public License.
The legal notice names Space Mushrooms srl, Via Melzi d'Eril 29, 20154 Milan, Italy, and says sweethome3d.com is hosted by OVH in Roubaix, France.
The site lists versions for Windows, macOS, Linux, iOS and Android and an online version that runs in a WebGL browser.