It seems a simple question but not everyone gives the same answer.

An estimate is what you think a job will cost based on your past experience of similar work. It is not an agreement to do the work at a firm price but a realistic guess of what it should cost.

A quote is an offer to do a job at a set price. Once the quote has been accepted, the trader cannot charge more than that figure to carry out the work specified.

Any quote should be confirmed in writing and should clearly set out the work to be done and how long the quote is valid for. You may wish to also set out the hourly rate for labour, how long the job will take and the costs of materials.

It is not uncommon to find that additional work is required once the job has been started, particularly with old buildings. If you find this is the case you should immediately tell the customer and ask them if they wish you to carry on. A further quote can then be issued to cover this work.

So, is it a quote or an estimate?

Quote                                               Estimate                                 

A promise to do work                          A best guess at the cost
at an agreed price

Legally binding                                   Not legally binding

Fixed unless extra work                      Subject to change
is agreed or unforeseen
circumstances arise