How to Make a Wooden House in Minecraft That Won't Burn Down

Steps

Check your current game version. This technique only works in pre-1.3 Beta Minecraft Java Edition. Any version after that has this bug patched out and replaced with Petrified Stone Slabs (a type of stone slabs with a wooden texture) which are not obtainable in Survival!

Get any size space you can (30x100 if it's a big house or 10x20-20x50).

Open your inventory and select wooden slabs.

Close your inventory and place two slabs, one on top of the other to form a look-a-like of a wooden plank.

Go back into your inventory and select a wooden plank and flint and steel.

Exit your inventory and put the Wooden Plank 1 block away from the look-a-like.

Select the flint and steel.

Set them on fire. Which one doesn't burn is the safe material.

Building the house

Follow the step of putting 2 slabs on each other for the frame, walls,floors and ceilings.

Put holes in the front of the house.

Put glass in the holes you just made.

Put doors in the holes.

Put doorways all over the floors.

Set it on fire to check you are using the wooden plank look-a-like (2 slabs on top of each other) or the house will burn to the ground.

Furnish it.

Make a Nether Brick Roof with Netherrack chimneys.

Set the chimneys on fire.

You now have a house that won't burn down!!