Domus.Cad Pro and Std 23. It contains the program, plug-ins, object libraries, Help guide with Manual, Getting Started manual, movies, examples and other support files.

If there are any problems downloading, please contact us by e-mail and we can arrange to have the materials sent in other ways.


Domus.Cad 23

Domus.Cad has been completely rewritten with advanced multi-platform software technologies

The program can also be installed where the previous version is installed and does not create any conflicts. The icons and file formats are different.

  • The main structure of the program has remained unchanged, but the interface has changed a lot, in line with previous programs developed with the same platform.
  • See the manual within the program to see the main differences compared to version 2.1.
  • ATTENTION! The first time the program is opened, an activation code is required to be requested from Interstudio

Remember, you need an authorization code to run the program. Interstudio will send it to the e-mail on the registration form. If you didn’t fill it before, do it now.

Download Domus.Cad Pro 23 for Windows

Version 23.0.13

Windows 10 and 11


811 MB

Download Domus.Cad Pro 23 for MacOs

Version 23.0.13

MacOs 10.14 and later


902 MB

Domus.Cad 23.0.13

Differences from 23.0.11

Corrections and amendments

  • Put white diffused color when there is a texture
  • Stored mouse with axes. Did not keep the choice in saving and icon and function were not agreed
  • Correction Undo item movement. Sometimes Undo Redo no longer works.
  • Corrected and speeded up movement room in plan
  • Added controls to consider the document modified when drawing a circle or an arc for three points a small circle
  • More small corrections and changes …

Domus.Cad 23.0.12

Differences From 23.0.11

Universal binaries

The version for Mac Os is now Universal binaries, that is to say the same application works both on ARM M! and M2 processors, both for Intel processors. The universal version does not work for operating systems lower than Big Sure. A special version is released for this.


  • ObjRot module. Enabled rotation on local source
  • If the melting distance of one of the two coaxial walls is 0, they are not merged
  • When choosing to change a roof in a slabs. now always puts slope equal to zero
  • Now the Split in Faces function deletes the original. To retrieve the original you undo the operation.
  • Improved file opening management.
  • Snaps excluded from the Camera segment
  • For some elements changed deform/reverse/rotate
  • Windows on the click goes up.
  • The polygon remains selected after adding a vertex
  • Improved active layer mesh deformation
  • The movement management of multiple selections has been improved, which sometimes generated inconsistent displacements of the selected elements
  • Adding z-deformation in the meshes
  • To add a point in the polygon I have to press alt+command
  • A small delay in moving items has been added to prevent accidental displacement. If you click on the element we move it quickly the element seems to move, but then it returns to its place.
  • Optimization in the import and export of texts in DWG-DXF.

Corrections and amendments

  • Correct window dimension in vector rendering
  • Corrected IFC exports. Fixtures were sometimes put at the wrong elevation
  • IFC export correct opening height when the wall has an elevation greater than zero
  • Corrected images in RoofTiles
  • In objRot put a warning that prevents the rotation of non-rolling items
  • Fixed object rotation. Now the old object is deleted and undo/redo works
  • Correction objrot, in some cases x and y did not rotate correctly
  • Now archive quote background if enabled
  • Corrected Hole image before the non identity deformation matrix elements were not corrected
  • Correct transparency color obj file
  • Correct insertion of arcs by 3 points. In some cases it was reversed during modification
  • Now I can change name in image fills
  • Bug fix on rect-handle and rettangle to account for element deformation, corrected bounding box
  • Correct material change for meshes inside an object
  • Dwg/dxf import the PolyFaceMesh now take the color and material of the faces
  • When a file cannot be read a message with the error type is shown
  • Snap segments, set distance from perpendicular axis
  • Locking orthogonal segments, now the tracking point must be inside the selection distance to snap
  • Fix to incorrect file name saving
  • Put check so that SetupWindow is not invoked multiple times
  • Correct adjustment of ambient light via slider
  • Control erasing materials when they are zero
  • Correct horizontal and vertical block in polygon drawing
  • Corrected double click error on segments that canceled the previous operation Corrected fine thickness with the possibility to check thickness in print
  • Circle and arc duplication correction. Thickness and line types were not duplicated.
  • More small corrections and changes …


Domus.Cad 23.0.11

Differences From 23.0.10

PDF Conversion

This new function is different from simple PDF import, as it imports the vector elements of the PDF, converting them into Domus.Cad elements (lines, polygons, circles, arcs, text, etc.).

Imported items are placed in a DWG-DXF group, as if you imported a DWG file. They can be edited and transformed.

If the PDF also contains images, they are imported separately from the other elements.

For example, if you add a letter with the sender’s logo, each line of the letter is converted into a Domus.Cad text and the logo into an image

The most important parameters are:

  •     The page to import. If the PDF document is multi-page, we can choose which page to convert.
  •     Scale. The PDF file is converted under the assumption that the original scale of the document is the one indicated; if it is different the measurements will be larger or smaller.
  •     Rotation. The converted drawing can be rotated

All other parameters normally do not need to be changed and default values are fine.
For a detailed description of all parameters, see the chapter Convert PDF.

Here is a PDF drawing converted to editable elements.

The drawing is divided into layers, visible on the left, which can be enabled or disabled. In practice it works like DWG-DXF imports.


  • Put control on the fusion, when in one of the elements the coupling distance is equal to zero, does not happen fusion
  • If the fusion distance of one of the two coaxial walls is 0, they are not merged
  • When you choose to change a roof in an attic, now always puts slope equal to zero

Corrections and changes

  • An immediate update of the 3D window has been made after various changes to the data of the selected elements in the relevant panels
  • Fixed the issue of moving randomly in the origin of clicked elements.
  • Fixed zero thickness wall axis snapping bug. Did not snap before
  • Fixed error in streching walls, randomly exiting the program.
  • Snap on edge even in the starting conncorde high+high or low+low. It snapped wrong joining low walls and high walls.
  • Fixed bug in moving rectangles in multiple selection
  • Correct parallelepiped reference height, pyramids, cylinders and cones and deformation pyramids
  • Fixed bug Circular junction with radius before made mistake if using walls
  • Correct bug ridimensionamewnto finestre when presenti gli infissi
  • In some cases, on Intel processors, the cursor did not change depending on the type of work and attacks on the various elements. It was necessary to slightly change the size of the window to reactivate them. This problem has been solved except in case a double click is made on the window bar.

Domus.Cad 23.0.10

Differences From 23.0.8

Speed ​​and optimization

  • Multiprocesses. Every Domus.Cad document is opened with a separate process from the others. This ensures optimal use of today’s multi-core processors, because the various processes use different processor cores. Furthermore, any errors on one of the processes interrupts only that and not the entire program as happened previously. That is to say, if I open three projects in parallel, a failure on one of them will only break the affected process and not the other projects.
    The Windows command has been eliminated, which showed the open windows, which are now visible at the bottom of the monitor.
  • Render engine. In previous versions, the rendering engine that displayed the 3D model was common to all open documents and “ran” continuously, even when no operation was done.
    Now each project has a separate rendering engine and “runs” only when needed. During all operations that do not involve a change of the view in the 3D window, the rendering engine is stopped, it does not consume energy and does not slow down the other operations. Work continuously, as before, only when navigating interactively in the 3D window.
    This leads to two main results: a higher operating speed in most operations and a considerable lower energy consumption with longer battery life of the laptops.

Other new features

Parametric frame. Horizontal elements have been added.

Error recovery. In the event of an error, the program tries to save the work before exiting, this is not always possible, but, if possible, it asks for the name to save the file at the time of the error.
The job can then be recovered to continue the job from the moment the problem occurred.



  • Update messages have been added when opening documents and importing DWG-DXF.
  • Added a check on the existence of the default printer
  • Join and cut function, now the uninvolved parts remain unchanged.
  • Improved bucket function.
  • Copy property does not copy text
  • Modifications to make the texts correct in print and independent of the video resolution

Corrections and changes

  • Corrected generation of walls on rectangles for left or right walls
  • Fixed bug on spot lights when set unit was meters
  • Fixed bug in cone generation in VR. Previously, non-centered cones could be generated
  • Fixed bug in generating 3D model with nested objects. In some cases the 3d model of nested objects was not corrected
  • Fixed error in reading Objects containing DWG-DXF imports. Previously they were skipped with file misalignment
  • Removed invisible elements from image creation
  • Fixed bug in exporting dxf/dwg tables. Previously, only visible floors were exported
  • Corrected opening of PDF printing on Preview in MacOs.
  • Other minor changes and fixes…

Domus.Cad 23.08

Differences From 23.0.7

New features

  • Open recent files. The last 6 documents opened or saved can be opened immediately from the Open recent files command in the File menu.
  • Modify object materials. the possibility of managing the materials of an object without having to separate and modify it has been added. By clicking on an object containing three-dimensional elements, the materials used are shown in the object panel.

    By selecting a material and clicking Modify material, the materials window opens with the chosen material selected.


    It is possible to change the characteristics of the selected material, Shutters in the figure above, or replace it with a different material.


  • Opening files. The Open system file button has been inserted in the Open File opening window.By clicking on this button it is possible to use the standard system window, without preview, to search, select and open files.
  • Optimized the fusion of walls for complex plans, with an increase in speed. Also improved moving walls with arrow keys.
  • Orthogonal snap also activated starting from the corner of a wall
  • The fill management window remembers the last previously selected panel
  • Changed the management of fonts and colors of dimensions.
  • Importing old projects. Objects not visible in print are imported transparent

Corrections and changes

  • Corrected generation of walls on rectangles for left or right walls
  • Fixed bug on spot lights when set unit is meters
  • Fixed bug in cone generation in VR. Previously, non-centered cones could be generated
  • Fixed bug in generating 3D model with nested objects. In some cases the 3d model of nested objects was not corrected
  • Fixed error in reading Objects containing DWG-DXF imports. Previously they were skipped with file misalignment
  • Removed invisible elements from image creation
  • Fixed bug in exporting dxf/dwg sheet. Previously, only visible floors were exported
  • Corrected opening of PDF printing on Preview in MacOs.
  • Other minor changes and fixes.

New articles and tutorials


Beta release for ARM M1 and M2 processors

The version of the program for MacOs with M1 and M2 processors is downloadable and usable, but is still in beta testing.
It is noticeably faster than the other version, but may still have some bugs.

Domus.Cad 23.07

Differences From 23.0.5

New features

  • Lights. Alt click on lights turns them on and off.


  • Sunlight. The default values are saved to reopen them as defaults in a new project. Fixed errors for light generation in the southern hemisphere
  • Deleting stratigraphies. There’s been added a control in the deletion of stratigraphies. If the stratigraphy is present in some wall, slab or roof the following window appearsContinuing, the elements with the stratigraphy deleted become without stratigraphy.
  • Direct printing and Vector printing. The Direct Printing and Vectorial Print options have been added to the Design Dimensions dialog.With the Direct Printing option, the printer system window with the various options does not appear during the print, but the parameters of the Design Dimensions window are used and only an information window appears with the print characteristics:Vector printing is an alternative way of printing to the default one, which is raster.
    Raster printing is independent of printer type. The program generates a 600 dpi image which is then printed.
    Vector printing uses the printer driver directly and, if supported, is faster and produces higher quality prints.

Corrections and changes

  • Fixed rototranslation with 4 points
  • Fixed bug deleting the last item of fill menus
  • Fixed error in the material change of roofs and slabs. Previously, if there were some parts that were not visible, an error could occur.
  • Other minor changes and fixes…

Domus.Cad 23.05

Differences From 23.0.4

New features

  • Zoom drawing Area. The Zoom Drowing area command has been added to the Options menu. This command adapts the drowing area to the work window. The drowing area is the one set in Domus Preferences or traced with the mouse with the command Drawiing area.
  • Center here. In the context menu, which appears by pressing the right mouse button in the working window, the command Center here has been added, which centers the drawing at the click position.
  • Mouse wheel zoom. Zooming through the mouse wheel or track-pad and pressing the Ctrl or Command key has been changed. Before the scale change occurred on the center of the working window, now it happens in the cursor position. This change has been made both in the working window and in the pagination window.


  • Sunlight. Sunlight management has been improved by eliminating some errors and saving default values.
  • Now when you paste a window into a wall, it is placed in absolute coordinates and not relative to the wall.

Corrections and changes

  •  Corrected rototranslation with 4 points
  • Fixed an error displaying item labels at click. In some cases labels did not appear.
  • Fixed error in vector view. The map copy of the vector view sometimes put elements out of sight.
  • Adjusted category entry and set of various elements.
  • Fixed error, when saving the active plan it changed the name of the document and the back-ups came with different names and extensions.
  • Other minor changes.

Domus.Cad 23.04

Differences From 23.0.0

New features

  • New function Break down dimensions, from the Process->Automatic Generations menu, decomposes the selected dimensions into segments, markers and editable texts.

    Dimension                                     Break down dimension


  • The right-click context menu is now dynamic and items change according to what is selected.
  • Moving selected items with the arrow keys has also been enabled for dimension texts and openings attributes,
  • In file loading, check the loading of segments with zero length, which are discarded.
  • The OK button in the stratigraphy window saves the stratigraphy shown on the screen in the current stratigraphy. In practice it corresponds to the Modify button.

Corrections and changes

  • An error when cutting walls inside an object has been fixed.
  • The + or – 90 rotate buttons have been set to match the other rotations.
  • Fixed parametric selection bug.
  • RoofTiles saves default parameters (it didn’t).
  • Removed labels and handles when cutting elements inside an object. He made misplaced and double handles and labels
  • Fixed rotation of stairs. Sometimes the handles were out of position,
  • An error in drawing a segment with an associated marker has been corrected.
  • Fixed groups into dimensions object with labels also selected
  • Fixed an error in converting window attributes to text
  • Correct representation of fills with plugs between limotrophic areas
  • Circular fillet bug fixed, sometimes the bisector was not calculated correctly
  • Fixed image resolution change. It took a bigger value
  • Changed the selection of polygons in multiple selection with mouse click. It selected other polygons in the interior instead of the edge
  • Fixed bug when switching between documents with selected 3D elements
  • Various changes to undo redo
  • Other minor changes and fixes…

Domus.Cad 23.0

Differences From 22.0.2


The stratigraphies

The stratigraphies are composed of various stata of various materials and are applicable to walls, floors and roofs.

Preferred strata

The basic element of stratigraphy is therefore the stratum.

The Strata command, from the Options menu, allows you to define your favorite strata to be used later to build the stratigraphies.<<<


Each stratum is composed of the following data:

  •     Stratum name
  •     Material
  •     Color for 2D representations
  •     Fill for 2D representations
  •     Thickness
  •     Code
  •     Type of calculation for the metric calculation. It can be Surface, Volume or None if the stratum is not to be considered in the computation
  •     Category
  •     Set
  •     Structural or not

The + button adds new strata
The button – deletes the selected strata
The Export button exports the selected strata to import them into other documents with an Import command
The Save button saves the default values ​​which are automatically opened when the program is started.
The Restore Defaults button restores the saved values.

Management of stratigraphies

The management of the stratigraphies takes place within the dialogue window of the stratigraphies, which can be recalled with the command Stratigraphies from the Options menu.


In this window it is possible to create, edit and view the stratigraphies.

The Stratigraphies menu at the top shows the list of stratigraphies present. Here it is possible to add, delete and modify the list of stratigraphies.
On the right you can see the graphic representation of the stratigraphy chosen from the menu or during the composition phase.
The table below shows the stratigraphy chosen from the menu or composed.

Add stratum displays a menu with the preferred strata set in the strata dialog. By clicking on Add, the current stratum is added to the list of strata in the table, but it is also possible to insert and modify strata other than the preferred ones.
The Delete button deletes the selected strata from the table.

The position of the strata in the table can be modified by taking the rows corresponding to the order number and dragging them to the desired position.


To correctly display the stratigraphy graph after a modification of the order of the layers, it is necessary to click on the button

Application of stratigraphies

Stratigraphies can be applied to walls, floors and roofs from the relative panels by choosing them from the Stratigraphy menu


The stratigraphy of the walls can be represented in plan and in print according to the plan parameters options.



If the See option is activated, the stratigraphies are displayed if the video scale is greater than the indicated one.
If Visible in print is deactivated, the stratigraphies are not printed even if they are visible on the screen.

In the walls the layers are placed with the last stratum being considered the inner stratum and the first the outer stratum.

By default the stratigraphy is positioned starting from the right side of the wall, with respect to the 1-2 direction.
This direction can be reversed with the menu in the walls panel:


Editing nodes

On the connection nodes between the walls the program creates default connections which may be incorrect.

It is possible to modify them manually by modifying the polygon that encloses the stratigraphy.

The stratigraphy of the walls is placed within a polygon associated with the wall and which initially corresponds to the shape of the wall.

This polygon can be selected by clicking on it with the associated polygon tool.
Once selected, nodes can be moved, new nodes added and nodes deleted, with the standard polygon tools.


Quantities computation

The layers can be accounted for in the bill of quantities according to the type of computation and the categories indicated.

In order for the content of the stratigraphy to be considered, the type of computation indicated on the wall or floor must be Stratigraphy



otherwise the element will be accounted for as a whole and the stratigraphy will be ignored.


When a drawing in DXF, DWG and DWF formats is imported, the drawing is imported into a container with the structure of the original drawing inside.

In this version of the program, functions have been introduced to better manage this structure.

The DWG-DXF panel

By activating the object icon and clicking inside an imported drawing, the DWG-DXF panel appears.

All the layers of the original drawing are shown inside the panel.

The various layers can be made visible or invisible by clicking on the relative checkbox.


The use of the buttons below is as follows:

    All visible. All layers are made visible
    All invisible. All layers are made invisible.
    Update. Update drawing based on layer visibility. Normally it should not be necessary to press this button, because the visibility is immediately activated by clicking on the checkboxes.
    Current layer. The drawing is expanding within the current plan. All the elements belonging to the DWG-DXF are inserted in the current plane.
    Different layers. New plans are created with the names of the layers of the DWG-DXF and the elements of the layers are inserted within these plans

I remind you that to edit and copy the elements of a DWG-DXF object it is not necessary to separate it, they can be treated like any other drawing element.

Information windows

The info window has been improved.

Choosing the Info command from the File menu, the following dialogue box appears:


The first column shows the total number of elements in the design.
The second column shows the number of elements in the various layers.
The two arrows below allow you to move between the various layers.

Corrections and changes

  • Some problems importing files from versions 3 and earlier have been fixed
  • Fixed parametric text selection.
  • Corrected text color function
  • DWG-DXF Export Fix also exported any deleted DWG-DXF
  • DWG-DXF import fix. Calculate size and location correctly.
  • Copy and paste DXF elements.
  • Image copying and pasting also works with word processors
  • Speed ​​up element selection.
  • Speed ​​up DWG import
  • Optimization expand objects and DWG. It took a very long time in the case of many objects
  • Create labels on polygons only if the number of vertices is less than 100
  • The width of the panels is also saved in the operating environment.
  • Fixed bug deleting multiple layers in the layers window. It only worked well with one layer at a time
  • Other minor changes and fixes.


Domus.Cad 22.02

Differences From 22.0.1

Undo-Redo management

Until the previous version, the number of Undo-Redo operations was unlimited, i.e. it was possible to undo and eventually redo an indefinite number of operations.
Each operation is kept in memory to be subsequently cancelled, this for complex projects can lead, as the work proceeds, to a memory occupation which can slow down the speed of the computer.
For this reason, an undo-redo management was introduced to manage the number of undo-redo levels managed and undo all levels to free up memory and speed up subsequent operations.

This is done through the preferences dialog.


The Number of levels menu allows you to choose between 1, 3, 5, 10, 20, 50, 100 or unlimited.

Warning: changing the number of levels deletes all current Undo levels, therefore it will not be possible to undo previous operations.

If you notice a slowdown after a long period of work, it may be useful to reset the Undo levels and start from 0, as when opening the program. This is done from Reset Preferences:


The Reset Undo-Redo option clears the memory of all Undo levels accumulated up to the current time.

Text management

The improvements in text management concern their modification and their search.

It is possible to independently change the size and font of the texts selected from the texts panel:


The Font button opens the following dialog:



After confirmation, all font characteristics are applied to the selected texts or new texts.

Changing the size or font type only changes the size or font of the selected texts, leaving all other characteristics unchanged.

The size of the selected texts can also be changed using the + and – buttons in the Change size box at the bottom of the lyrics panel. The size of the selected texts is increased or decreased by one point.
For this operation there is also a keyboard shortcut with the Ctrl (Windows) or Command (MacOs) keys together with the + and – keys.

Parametric text selection

In parametric selection, the possibility of selecting texts also based on size and/or font has been added.


Corrections and changes

  •     Parametric selection, added option to zoom on selected elements
  •     Openings measurements are movable after being generated
  •     Now Copy Text Properties also copies the actual text
  •     Separation dwg/dxf now also takes into account the transformation matrix of the individual elements
  •     Old file import control. Now it is impossible to have a material without a name.
  •     Expand/Reduce updates the measurement labels of walls and segments
  •     Correct ifc export floor elevation
  •     Move Wall End now doesn’t move openings
  •     Function adjust segments parallel segments are now excluded
  •     In 3d view enabled multiple selection also with the shift key, as well as Ctrl (Windows) or Command (MacOs)
  •     Other minor changes and fixes.

Download Domus.Cad Pro 23 for Mac OS Universal Binaries

Version 23.0.13

MacOs 11 and latest


878 MB


Windows version

Download and double click on Install_DomusCad23.exe
The installation generates a link to the program and a link to the program folder on the desktop.

The program folder contains some examples.

The manual is accessible from within the program from the “Help” menu

MacOs version

For installing the program follow the steps below:

  • Download and double click on DomusCad_23.dmg
  • Drag the Domus.Cad 23 Folder from the mounted disk image to your Application folder or where you prefer into your hard disk.

The program folder contains some examples.

The manual is accessible from within the program from the “Help” menu