The Internal Door Estimating Calculator estimates the Materials, Labour and Plant required to fit internal doors. It contains options for estimating doors into solid or cavity walls.

This estimating calculator is linked to the Specification. Items relating to the structural opening and finishes are taken from the Specification.

The information taken from the Specification, along with the options you select from the door specifier and the dimensions you enter, will be used to calculate the following items:

  • Doors
  • Frame fixings
  • Door hinges and furniture
  • Lintels, if required
  • Cavity closer, if required
  • Plastering
  • Decoration
  • Labour associated with the above


  • To fit an Internal door into an existing wall, use the Internal Door to Existing Wall Estimating Calculator. This will estimate the cost of forming the opening and removing the spoil.