Opening a PL1 File

The PL1 file type is primarily associated with 3D Home Architect.

PL1	File extension: PL1
	File type:	first/ground floor plan

What is a PL1 file?

PL1 files mostly belong to 3D Home Architect by Broderbund. The PL1 file extension is mainly associated with 3D floor layouts created using 3D Home Architect, a legacy program for creating 3D home and landscape designs. Such PL1 files contain the ground floor or first floor plan or layout of a house. Other contents of a PL1 file include furniture, surface materials, and lighting effects. Also, Adventure Maker, a game development program for Windows operating systems stores its plugins in PL1 files. PL1 plugins contain utilities that extend the functionality to Adventure Maker. Some examples include plugins for additional Hotspot features. PL/I, a programming language developed by IBM also stores program source code in PL1 files.

How to open PL1 files

You need a suitable software like 3D Home Architect to open a PL1 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your PL1 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a PL1 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online PL1 Text Viewer

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Programs that open and convert PL1 files:

3D Home Architect by Broderbund
See the previous paragraphs to learn more about the main application. PL1 files are often referred to as 3D Home Architect 3d images because this type of file is primarily created or used by this software.
Adventure Maker (plugin) by Giovanni Albani
Adventure Maker is a Windows-based freeware that offers users a drag and drop API for creating multimedia content such as games and mobile apps without having any programming knowledge. Adventure Maker plugins have PL1 file extension. This file format is classified as Plugin.
PL/I (source code) by IBM
PL/1 is a programming language initially released by IBM in 1964. The language supports imperative, structural, and procedural programming paradigms and it is mainly used for data processing, scientific programming, and system programing. PL/1 source codes are stored in PL1 files. This file format is classified as Developer. Related links: PL/I

PL1 file format:

To view or edit PL1 files you need to know the file format, because it determines how the data in this file is stored. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. Frequently, however, one file extension is used by different programs for different file formats, and one file format for different file extensions. If there are problems opening a file, you must first determine the file format used. Our analysis of the PL1 files produces the following result:

The PL1 file extension is not found very often and includes various formats for various programs. The two most popular formats are as follows:

35% of all PL1 files use the same file format, which have the signature 3E 03 1E 00. The content consists of illegible binary data, which can only be read and interpreted by the associated programs. A typical file size is 23 KB. The file type is very old and rarely used today. Files like these are sometimes connected to plan, and usually contain person-related data.
20% of all PL1 files start with the bytes B8 02 1E 00, which are crucial for this file format. These files contain neither text nor words, but only data. The files are on average 12 KB in size and range from 6 KB to 25 KB.

All other PL1 files (45%) have no consistent format, the following 5 formats exist: DOC. The category is basement or house. If you want to find out what your PL1 file contains, drag and drop it onto this page.

Technical Data for PL1 File Extension

File classification:

3D Image

Related files:

pb1, pl2, ca1, pl3, pli, pl, srt, bld, scd

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: 3DHA3.Plan.1, FileType: First Floor Plan, AppName: 3D Home Architect Deluxe

ProgramID: Chief.Plan.1
EXEFile: %ProgramFiles%\ART Inc\Home Designer Pro 60\Home Designer Pro 60.exe

ProgramID: Chief.Plan.1
EXEFile: %ProgramFiles%\ART Inc\Home Designer 60\Home Designer 60.exe

ProgramID: 3DHome.Plan.1
EXEFile: %ProgramFiles%\Broderbund\3D Home Architect 4\3DHome40.exe

Show all 4 listings To Top

a pl1 first/ground floor plan is a special file format by Broderbund and should only be edited and saved with the appropriate software.

How to solve problems with PL1 files

Associate the PL1 file extension with the correct application.
Update your software that should actually open first/ground floor plans. Because only the current version supports the latest PL1 file format. Search, therefore, e.g. on the Broderbund manufacturer website after an available 3D Home Architect update.
To make sure that your PL1 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .PL1 file online - secure, fast, and no downloads needed.