Accountant company

Hi,

What costs except landtax and cost to the accountant do I have to pay each year? Can anyone recommend a reliable and not to expensive accountant company? What is the "normal" fee per year to the accountant company for a 30 kvm apartment in Paris area?

If I don´t renew the lease after the first period and want to change from leaseback to a normal property and have it for my own (or sell). Is it the management company that decide if I may do so or is it the mayor, that I read somewhere?

Best Rgds