If you have a 3D printer, you can find modern architectural puzzles that are designed to be printed in interlocking sections.
: Offers specific files like the MODERN HOME R.B.P. FREE VERSION , which is a detailed modern architectural model.
: A great resource for 3D printed house models, including various modern house designs that can be printed as dioramas or puzzles.
: This site hosts thousands of free laser-cutting files, including 3D House Puzzle templates in DXF and SVG formats.
Finding a high-quality "Modern House" 3D puzzle for free download is possible across several platforms depending on whether you are using a 3D printer, a laser cutter, or just a pair of scissors.
: Provides collections of foldable building PDFs that range from simple cottages to more modern apartment-style blocks. How to Assemble Your Puzzle Laser Cut 3D Puzzle (4969) Files Free Download - 3axis.co
The easiest way to start is with paper models that only require a printer and cardstock.
: Offers a pack of 9 free 3D paper house templates that can be decorated and assembled by folding and gluing.