How much will it cost?
I will always provide a full typed and costed quote in advance of starting any larger projects and a verbal quote for smaller jobs, as well as a written invoice. My customers always receive a copy of my invoice at the close of the job which lists terms for payment and contains full details of the guarantee I provide for my workmanship. I also have up to date liability insurance - something many "cowboys" do not bother with.
My rates depend on the complexity of the job, and no two jobs are exactly the same! As a guide, a simple bathroom basin tap replacement would probably be about £30 and a kitchen tap about £40 for my labour, but I will always advise you what the likely cost is in advance of starting any work, how much any parts required will be and how long the job is likely to take.
If you prefer to source the parts yourself, this is acceptable and I can provide help and advice if you are deciding on fixtures and fittings for your bathroom. It is always a good idea to consult a plumber before making any major purchases for bathrooms as a good plumber will have the experience to advise you what will work in your particular situation and advise on any structural work that may be necessary (for example strengthening floor joists for heavy free standing stone baths).
I prefer to provide a full written quote for any larger work, setting out and agreeing with you exactly what work I will be doing and will charge a price for the overall job (which can include costs for electricians and carpeneters if required) rather than a daily or hourly rate for full bathroom and wet-room installations.