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.
The advantage of having such a system on their website will give their customers a "real" online live quote for the price of a job they are looking for based on their requirements. It also reduces the time it takes to get back to a customer with a price only for that price to be out of the budget for the customer.
Therefore, as the customer can see the price on screen, if they are comfortable with the price, they can continue to fill in their details and send their work request. This frees up valuable time for the electrician as they will only be following up on website referrals that meet their price point.
I have also embedded an example form below: