Blender 2.8x - Houdini procedural modeling!

 Very interesting combination, especially on a free software!

Precision Modelling with Blender for architecture

We have tutorials since 2008 on Precision Modelling with Blender for architecture by Yorik in https://yorik.uncreated.net/tutorials/precisionmodelling-blender.html
Why architects should explore on Blender: http://blendermama.com/why-blender
Related link:
https://blenderartists.org/forum/showthread.php?403082-Precision-Modeling-in-Blender-Tools-and-Addons-free-ebook-available
http://pdfsr.com/check_download/precision-modeling-in-blender-tools-and-addons

Parametric Modeling with Sverchok

"Sverchok is a powerful parametric tool for architects, allowing geometry to be programmed visually with nodes. Mesh and geometry programming consists of combining basic elements such as:

• lists of indexed Vectors representing coordinates (Sverchok vectors are zero based)
• lists of grouped indices to represent edges and polygons.
• matrices (user-friendly rotation-scale-location transformations)" to find out more...

Image via https://blender-brussels.github.io/articles/parametric-modeling-with-sverchok/
Passage via https://github.com/nortikin/sverchok
Related links:
https://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Nodes/Sverchok
http://blendersushi.blogspot.sg/2014/01/sverchok-get-to-know.html
https://sverchok.readthedocs.io/en/latest/main.html

Blender - Introduction to Tessellations

Blender is free, why not give it a try for computational design and modelling with Blender?

Related link: 

https://github.com/alessandro-zomparelli/tissue