This is one of those questions that seems simple, but the answer really depends on what you’re building and which scale you’re working in. Here’s a practical breakdown that works well for most dollhouse projects.

Most commonly used plywood thicknesses for dollhouses

• 3 mm (1/8 inch)
  Ideal for walls, floors, roofs, and lightweight room boxes.
  Easy to cut and very popular for 1:12 dollhouses and laser-cut kits.

• 5–6 mm (3/16–1/4 inch)
  Best for structural parts: bases, load-bearing walls, stair supports.
  Stronger, less warping, but slightly heavier.

• 9–12 mm (3/8–1/2 inch)
  Mostly used for bases or large display platforms.
  Usually too thick for visible walls unless you’re building very large houses.

 

For miniature furniture

 

• 1.5–3 mm plywood works well for cabinets, tables, beds, and shelving.
  Thinner plywood keeps furniture looking more in scale.

 

Scale matters

 

• 1:12 scale → 3 mm is the sweet spot for walls

• 1:24 or smaller → 1.5–2 mm looks more realistic

• Large or play-scale houses → 5–6 mm for durability

 

Practical tip

 

If you’re unsure, combine thicknesses:

 

• thinner plywood for visible walls and details

• thicker plywood underneath for strength and stability