does anyone know how to get a market stall in benidorm or a street selling license

There is usually an office to make the application which is part of the local town hall. So make enquiries there, good luck.

Be careful. Some twenty-plus years ago when I first moved to Spain, I had the idea of selling British goods on a market stall. I applied in Denia, which was where I lived at the time. I asked in an information office what the procedure was. I was told I had to have a licence and be registered for social security payments, and then I had to apply for a market stall. I was given the usual sheets of forms to fill in. I did all of this and took them back to the information office. They forwarded my papers to somewhere in the town hall that dealt with business licences, and after a while I was registered to run a market stall in Denia, or anywhere else in the province. So I went back to the information office in Denia with all papers stamped and asked for a market stall. They told me they would put me on the list. I asked how long the list was. They told me at least two years. I told them I had already signed up for a licence and social security payments. They gave the usual shrug of the shoulders and told me I had to keep paying into the system while I was on the list. While I accept things may have changed now, with the passage of time and the crisis, I add again, be careful. Incidentally, this was my first run-in with the Spanish system. It taught me how the country is run.

thankyou for this information it is very helpful

Just to add. There were a few localities where I could get a casual stall if I showed I was legal. I managed to find a place in Pego, Gata, Ondara and somewhere else instantly forgettable during the summer months. I was only spitting in the wind, though. They were small markets. You need some large markets to make it pay, in those days at least. I gave it all up after the summer. I remember going to Denia market with my papers and talking to a policeman there who ran the market. I looked around at the empty stalls, of which there are always some, but he told me if I wasn’t a regular on the list I couldn’t have a stall. So the space remained empty for the day. Spanish mentality, you see. The Guardia Civil and the local police did make regular checks on stallholders. If you had a helper they had to be registered. Being British and the first British in the market, I remember my first trip to Ondara. When the market inspector asked for my papers, the Spanish stallholders in the bar all went silent and looked at me, but when I showed I was legal everything was okay and we became friends.