I am currently developing an Electricians cost calculator and quote builder/generator. This is currently in Pre-alpha status. You can help make this even better and view the project here: https://www.gpratten.co.uk
My development site is to develop and test a flexible system that electricians can use on their own website to create any number or types of cost calculators. For example, a fuse board upgrade cost calculator, a rewire calculator and so on.