Walls, stairs and garden building tools

Count the bricks and blocks for a wall, work out the risers and going for a staircase, and check whether a shed or garden room needs planning permission.

Brick and block calculator
Bricks, blocks, sand and cement for a wall, with openings taken off.
Stair calculator
Riser and going options for a floor to floor height, checked against Approved Document K.
Shed and garden room planning permission checker
Answer a few questions to see whether a shed, summer house or garden room is likely to be permitted development in England, and whether building regulations apply.

Using these

For a wall, the brick and block calculator covers single, double and cavity walls and takes the openings off.
For stairs inside a home, the stair calculator lists every number of risers that fits and checks the limits for private stairs in England.
For free-standing garden steps, use the deck steps calculator instead.
Before you build a shed, summer house or garden room, run the shed planning permission checker. It also says whether building regulations are likely to apply.

Structural walls, foundations and staircases are covered by building regulations. Ask building control or a professional before you build.