Councils and the way they treat business run from home is very much luck of the draw. I ran a fairly large furniture workshop employing on and off 4 guys, for 16 years. I started out really small in 85 in my fathers garage in sussex in a residential area. Within 6 months complaints brought the council round. It didnt matter that much cos the whole family were moving to wales. We had bought a rural property with a bit of land and in the workshop that was on site built the business over the following 15 years or so. Big machinery noise and dust, delivery lorries etc no complaints and little interest from the council who seemed happy to see small biz taking off. It was a time when being a small biz person was being encouraged. Labour came to power and all that changed almost overnight. Within two years the council were on to me. Paperwork to fill in to get permission to boil a kettle within the workshop was the last straw.
My advice is see what you can get away with, but be sensible. There is plenty of info on the web which enables you to be informed without alerting undue interest. I always found the more I involved the authorities in what I was upto, the more interest they showed. This basically means you end up working harder and harder to keep a pencil jockey in post. Its up to you, but if you get a couple of years rate free, hassle free and pain free, you'll be able to channel that energy into your biz effort. Just my bitter experience thoughts.....maybe its the time of year....ba humbug