Coldwell Banker Star Realty
BRE Lic #01456982
Although I am not familiar with your local building codes, I have done a lot of remodeling projects and dealt with city/county officials in 9 different counties.
Unless there is some ordinance on the books preventing such a conversion you should be able to get a permit, but you will need to bring everything to code, and what you call the space may have effect on what you need to do and the corresponding cost. For example, a bedroom may require hard-wired smoke detectors but an "office" won't.. However, having an extra legal bedroom could help on resale so you should do a cost analysis to figure out which makes more sense.
Lance King/Owner-Managing Broker
Converting a garage to a living space can involve much more than meets the eye. Building code regulations will likely require that you elevate the floor level to the same hight as the rest of the first floor. Generally, the poured garage slab is not high enough to keep water out.
Door, windows, electricity, and plumbing will all need to be done to code. The approval process usually requires a drawing that in most cases is best done by a professional.
The best way to get an accurate appreciation of what this process will involve is to be in touch with your communitiy code enforcement office.