Diversifying is something I have actively done over the past 8 years in business.
I started carpet cleaning in Jan 2003 after being made redundant, in the June I was asked by a client if I knew any window cleaners, so I started window cleaning for 6 customers in between carpet cleaning, in the August I took on my first employee, I now have 6 window cleaners and 1500 clients.
The next year we were asked about office cleaning, so I took on a girl to do office cleaning, then we started domestic cleaning, we now have 8 "ladies who clean". Other services we provide are pressure washing, hard floor cleaning and restoration, leather cleaning and restoration, flood work, fire work, EOT cleans, new build cleans, etc, etc and our latest is we've just had a dip tank built for oven cleaning and already have work for it with our current clients.
We now have a 3200 sqft workshop/office for storage and working in, employ 19 staff, full and part time and run 8 vans. They are all pretty much kept busy all the time with domestic and commercial work. It's not the route a lot of people want to go down, but for us in quite a rural area where there is not the density of population it was the right way to go.
Unfortunately now I very rarely get out on the vans, the majority of my time is spent office/workshop based. My main task at the moment is promoting our oven cleaning services to current and new clients. If this takes off then van No 9 and employee No 20 will be on their way.
There is always an "on cost" with diversifying and providing additional services, ie: extra machinery and materials, storage, transport and even employees, it's not for everyone.
Do a bit of market research, a simple business plan and see if it comes out as a viable idea?
I've got another investment idea rattling around in my brain at the moment that came from a chance conversation over the Christmas break and involves very little additional investment on our part but has the potential to generate £1000+/week....I now need to investigate a bit more!!