Plast Craft Games size question.

[racm32]

Plast Craft Games size question: would anyone mind answering a few questions for me perferribly with photos? I'm interested in their 15-20mm range but need to know if it is more in scale with 20 them 15. Also how easy is it to modify them with removable roofs and interiors? https://plastcraftgames.com/en/ewar-15/99-european-house.html