You need to have at least 100K of cash to burn, Lawyers, architects, builders, licences, it is incredibly complex, and expensive to do.
What happened with the Cannabis Clubs here was anticipated by many, when all this huge clubs with hundreds or even thousands of members started fucking around and precipitating everything. It was actually a deja-vu of what happened in Swizterland in the late 90s. With our conservative government and outdated legal system, this would happen sooner or later. They were just waiting for us to take the wrong steps.
We used to have relaxed laws and the private Cannabis Association model has been working for many years, until the greedy people and foreigners started their narc-operations all over the biggest cities and wanted to turn Spain into the new weed tourism spot, advertising it as the new and hottest alternative to Amsterdam. The problem is that the coffeeshop/dispensary concept they were trying to import into Spain was actually illegal here, while it was actually legal in Holland. Clubs needed to be private, non-lucrative, closed and controlled to make it work. At least while the Cannabis laws don't change worldwide.
This actually hurted the whole movement so much. But the clubs were making so much noise (like when the idiots were advertising all over the big cities in order to attract canna-tourists, importing buds from California or just doing everything for the money) that the national Supreme Court had to put a stop on it, ruining everything up for everyone, including the humble people who only wanted to fight for the movement and whose goals weren't actually making money but normalizing a situation we needed to regulate since a long time ago.
Now the time for the big Cannabis clubs ruled by narc-wannabes and shameless greedy people has come to an end. The smaller and serious Cannabis associations may still hardly survive but that's what you get when a bunch of idiots are pushing the limits way too much. Even the National Federation of Cannabis Associations became a joke nowadays. They actually had a great chance to make an impact on the laws but they actually wasted it because they were just a bunch of greedy people trying to become legal dealers like the 90% of Clubs here.
I guess it was nice while it lasted... at least for those who made millions in Spain out selling weed "legally"! For the rest, nothing will change. Anyway the real front of fight nowadays should be the regulation for anyone who wants to grow their own medicine or cherished flowers at home, without fearing police raids or having to defend himself at the court. Thats where the real fight is.
Cheers.
There are specialized lawyers that can set the technical bits. You can se them advertised in some spanish forums. As it is a NGO, making a bussiness out of it means bending the law, and therefore walking on a very narrow path. Nobody knows for sure what will be the outcome for many of those clubs that run openly as a bussiness (about 90% of them).
Location is also paramount, as every region holds its own stance towards cannabis. Catalunya being probably the most lax, it also means fierce competence. It depends on how many members, some are just a few guys meeting for having a few joints in peace (the actual point of a CSC) and others have thousands of members, many of them tourists.
How to provide for a lot of people is as complicated as it sounds, it's not like you go to the cash'n'carry for supplies or set up a big greenhouse for production. Connections are necessary and so is security. Big cannabis providers are not exactly run by hippies anymore.
So, what sort of club you're after? Are you actually are after a law abiding CSC with ten or twenty friends/members? That's easy.
Think about there are like 1000+ clubs in Spain and plenty of them have had police busts at some point. So, lawyers need to be close.
Legally, CSC's have nothing to do with coffee-shops.