We've decided to do a loft conversion so contacted several companies for quotes.
One company gave us an online quote but didn't visit our house or discuss what we wanted. One company came out, took measurements, discussed ideas and came back to us within a few days with a really reasonable quote. The other companies haven't bothered to get back to us.
The company that came out, were friendly, professional gave us some good ideas, didn't suggest expensive alternatives (in fact were actively thinking of ways to make the project come in at a lower price for us). They have a good website with lots of example of their work and have said they could arrange for us to visit some of the lofts they'd converted.
Would it be risky to go with this company without getting a quote from another 2/3 companies? We really liked them but I was always brought up thinking you should get more than one quote!