What is a DDP file & how do I open a DDP file (DreamPlan Home Design Project)?

.DDP (DreamPlan Home Design Project) - File Extension

Developer: NCH Software

What is a DDP File?

A DDP file is like a digital blueprint for your home or other architectural projects. It’s made using DreamPlan Home Design software and helps you plan and see your construction or renovation ideas clearly.

Inside a DDP file, you’ll find lots of details, such as floor plans, room arrangements, where to put furniture, and even the colors you want to use.

Imagine having a digital map of your dream home. This file format, called DDP, is all about making your design work easy and organized. Whether you’re a professional architect or just sprucing up your living space, DDP files have you covered, holding everything you need to bring your vision to life.

How to Open a DDP File

Opening a DDP file is straightforward if you have DreamPlan Home Design installed on your computer. Here are the steps to open a DDP file:

  1. Launch DreamPlan Home Design: Open the DreamPlan software on your computer. If you don’t have it, you can download and install it from the NCH Software website.
  2. Load Your Project: Click on the “Open Project” option, usually found in the software’s main menu or on the startup screen.
  3. Select the DDP File: Browse your computer to locate the DDP file you want to open and select it.
  4. Open the File: Click the “Open” or “Load” button, and your DDP file will be loaded into the software, allowing you to continue working on your home design project.

How to Convert a DDP File

Converting a DDP file to other formats or vice versa might not be a common task since these files are specific to DreamPlan Home Design software.

However, if you need to share your design with others or collaborate with professionals who use different software, you might want to explore conversion options.

Keep in mind that converting DDP files may lead to some data loss or formatting issues. Here’s a general outline of how to convert a DDP file:

  1. Export as Image or PDF: Within DreamPlan, you can export your design as an image (e.g., JPEG or PNG) or a PDF file. This is the easiest way to share your project with others, as these formats are widely supported.
  2. Manual Reconstruction: In some cases, you might need to manually recreate your design in another software, which can be time-consuming but ensures accuracy.
  3. Consult with Professionals: If you’re working with professionals, discuss the compatibility of their software with DDP files and explore the best way to collaborate without extensive conversions.

Security Considerations: Are DDP Files Safe?

DDP files themselves are not inherently unsafe. They are project files used for design and planning purposes.

However, as with any digital file, it’s essential to be cautious when sharing DDP files, especially if they contain sensitive information or personal details about your home.

Ensure you only share these files with trusted individuals and take standard cybersecurity precautions to protect your data.

Format Details for DDP Files

DDP files are unique to DreamPlan Home Design software, and their format is proprietary. This means that the specific technical details of the format are not publicly disclosed.

These files contain various data elements, including 2D and 3D representations of your design, material and texture information, and annotations.

Uses and Applications of DDP Files

DDP files find their primary application in the field of home design and renovation. They serve as the central repository for all the information related to a home design project. Interior designers, architects, and homeowners use DDP files to:

  • Visualize and plan room layouts.
  • Experiment with different color schemes and materials.
  • Arrange furniture and fixtures.
  • Create 2D and 3D renderings of the design.
  • Collaborate with other professionals and clients.

Associated Software Programs

To work with DDP files, you’ll need DreamPlan Home Design software. It’s the dedicated software developed by NCH Software for creating and editing DDP files.

While there are no alternative programs that natively open DDP files, you can use other design software to manually recreate your project based on the information in a DDP file.

Advantages and Disadvantages of DDP Files


  1. Comprehensive Design: DDP files store all design-related information in one place, making it convenient to plan and visualize your project.
  2. User-Friendly: The DreamPlan Home Design software is user-friendly, making it accessible to both professionals and beginners.
  3. Effective Collaboration: DDP files facilitate collaboration between homeowners and professionals, ensuring everyone is on the same page regarding the design.


  1. Proprietary Format: DDP files are specific to DreamPlan, limiting their compatibility with other design software.
  2. Limited Use Cases: These files are primarily designed for home design projects and may not be suitable for other architectural or engineering purposes.
  3. Conversion Challenges: Converting DDP files to other formats may result in data loss or formatting issues.

Comparison: DDP Files vs. Similar Extensions

DDP files are unique to DreamPlan Home Design, but it’s essential to understand how they compare to other design-related file extensions:

  • DWG (AutoCAD Drawing): DWG files are widely used in architecture and engineering and offer more versatility than DDP files. However, they require specialized software like AutoCAD for editing.
  • SKP (SketchUp): SKP files are associated with SketchUp, a popular 3D modeling software. While versatile, they have a steeper learning curve compared to DreamPlan.
  • PDF (Portable Document Format): PDF files are universal and can store design information, but they lack the interactive 3D capabilities of DDP files.

Troubleshooting DDP Files

Encountering issues with DDP files can be frustrating, but here are some common problems and their solutions:

  • File Won’t Open: Ensure you have the latest version of DreamPlan Home Design installed. If the file is corrupted, consider restoring from a backup.
  • Loss of Data: Frequent backups can help mitigate data loss risks. Save your work regularly to minimize the impact of crashes or technical glitches.
  • Compatibility Issues: If sharing with others, ensure they have the same or compatible versions of DreamPlan to open the DDP file.

History of the DDP File Extension

The DDP file extension is closely tied to the history of DreamPlan Home Design software. Developed by NCH Software, DreamPlan was created to provide users with an accessible and intuitive tool for home design and visualization.

Over the years, the software has evolved to offer a wide range of features, making it a popular choice among homeowners and professionals alike.

As a result, the DDP file extension became synonymous with DreamPlan, representing countless dreams and aspirations turned into tangible home designs.

Tips and Tricks for DDP Files

Here are some tips and tricks to make the most of DDP files and DreamPlan Home Design software:

  1. Regular Backups: Always create backups of your DDP files to avoid losing your work due to unexpected issues.
  2. Experiment: Don’t hesitate to experiment with different design elements. DDP files allow you to try various layouts, colors, and materials without committing to any changes.
  3. Use 3D Features: Take advantage of DreamPlan’s 3D modeling capabilities to visualize your design from all angles.
  4. Consult Tutorials: Explore online tutorials and guides to discover advanced features and techniques for creating stunning designs.
  5. Collaborate: If you’re working with a team or professional designers, use DDP files for seamless collaboration and real-time feedback.

More Information

Version Compatibility:

When working with DDP files, it’s crucial to ensure that you and your collaborators are using compatible versions of DreamPlan Home Design software.

Newer versions of the software may introduce features or changes that are not backward compatible with older versions.

This can lead to issues when sharing and editing DDP files. Regularly updating your software to the latest version can help mitigate compatibility problems.

Import and Export Options:

While DDP files are the native format for DreamPlan Home Design, the software also provides import and export options.

This means you can bring in external files or export your DDP projects to different formats. For example:

  • Import: You can import existing floor plans, images, or 3D models into DreamPlan to incorporate them into your design project.
  • Export: Besides exporting to common image formats (JPEG and PNG), DreamPlan allows you to export your project as a 3D model in OBJ format. This can be useful if you want to use your design in other 3D modeling or rendering software.

Collaboration Features:

DreamPlan Home Design software offers collaboration features that enhance teamwork on design projects. You can share your DDP files with colleagues, clients, or friends, allowing them to view and comment on your design.

Collaborators don’t need to have the software installed to view shared designs, as DreamPlan provides a viewer for this purpose.

Support and Resources:

To make the most of DDP files and DreamPlan software, consider exploring the available support and resources.

NCH Software, the developer of DreamPlan, typically offers user guides, tutorials, and a user community where you can seek assistance, share tips, and discuss design-related topics. These resources can be valuable in improving your proficiency with DDP files and the software.

Expanding Horizons:

While DDP files are primarily associated with home design, users have creatively applied them to other areas of design and visualization.

Some users have used DreamPlan to create plans for landscaping, office layouts, and even event setups. Thinking outside the box can open up new possibilities for DDP files beyond traditional home design.


In the world of home design and architecture, the DDP file extension plays a vital role in bringing dreams to life. Through its association with DreamPlan Home Design software, it empowers users to plan, visualize, and create their ideal living spaces.

While DDP files have their advantages and limitations, their contribution to the field is undeniable. As technology continues to advance, we can expect DDP files and the software that supports them to evolve, making the design process even more accessible and exciting for everyone.

So, whether you’re remodeling your home or embarking on a new design project, remember that the DDP file extension is your digital blueprint to a beautiful future.

Software Compatible With The DDP File Type
DreamPlan Home Design Project

In this section you will find a list of the best programs compatible with the DDP file type. We've selected the best software for Windows, Mac, Android and Linux to open, edit, convert and view the contents of DDP files.