I took a day off and put the prices up on about a third of my round - an experiment if you like - using a standard letter I printed off my computer.
I used two different letters. One for houses that I was already happy with the price and I increased those by 50p for every £5.00 I charged. So if I charged £10.00 I increased the price by £1.00.
For those houses I'd really under priced, or those houses I don't really want (someone wise once said, there's no such thing as a difficult house; just an under charged one) I used the following letter:
Remember to use your own professional looking letter head, a good quality paper and check your spelling and grammar.
I've only lost one customer doing this so far (it was on Tuesday I did it) and that was my choice because they wanted me to clean them every other month. I refused and they later told me they'd found a window cleaner who would.
Anyway, here's the text of the letter I use if I raised their price by far more than 50p in the £5.00.
I'll post both letters to the 'documents to upload area'. I hope they're some help to someone.
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Dear Customer,
WINDOW CLEANING – PRICE INCREASE
We have increased our price for the monthly cleaning of your property from
£________ to £ ________. This increase will be effective at our next clean.
It is realised that this is a sharp increase in price, however when I first quoted for your property, I severely underestimated the price. It is hoped that this will not deter you from being one of our valued customers and if you wish to discuss the above, please do not hesitate to phone me. You may (of course) also ask other window cleaners for a quote and I am sure you will find that we are still extremely competitive.
I would also like to remind you that:
We are fully covered by public liability insurance, up to two million pounds, for your safety.
We are as professional as possible. This is our full time occupation and we do not clean windows for extra 'beer/drug money'.
We are not 'fly by nights', who have started window cleaning, then three
months later – pack it all in.
This is the first time we have increased our prices in two years, and it will remain fixed for at least a year. As we have built our business, we have increased our prices for the new cleans we have taken on. This price increase will bring you in-line with which we are charging already and means that we will continue to clean your house, rather than abandoning you for more lucrative business.
We look forward to cleaning your windows in the future.
Ken and Helen