We are probably going to find a 2-room office location
Forget offices. Find some industrial complex with concrete walls. Steve is correct about office space. They partition these spaces for quick resizing so partitions and ceilings do NOT lend themselves to sound attenuation. Thats not saying it can't be done, but you would spend far more money trying to isolate rooms in these sort of spaces. Industrial business complex type spaces are usually seperated by concrete partitions, which give you a substanatial first leaf.
I can tell you this right off the bat, so you understand some things. At current market prices, I don't think you could build one complete normal room, for less than $1,000, let alone two rooms, built with standard materials for normal use. Depending on the space you end up with, add sound attenuation methods, like double walls, iso ceiling and floating floors, doors, jambs, iso glass construction, hardware etc, and you will EASILY approach $5k or more. And that doesn't include HVAC requirements. Even tieing into the existing HVAC, can be expensive.
And remember this. ANTIME you start retrofitting commercial space, you immedietly place your construction under the control of the BUILDING INSPECTION DEPARTMENT, and since it is commercial space, you are dealing with COMMERCIAL PERMITS. That means everything must be submitted in the form of PRO drawings. Sounds easy. Ha!
Let me give you an example. My boss PURCHASED a complete commercial strip center in Sacramento California. He decided to resize the spaces for each client as they needed it, and I had to design and detail these spaces according to the wishes of my boss, and needs of the client. The very first leasee, was opening a simple learning center. All he needed was 2 seperate offices, and a large space for a classroom. Sounded simple. And it was untill we applied for a permit and submitted a set of simple floor plans. We were immedietly confronted with a list of compliance requests. Remember, they will tell you NOTHING. Only require. Its up to you to meet thier code compliance DOCUMENTATION requests. This translates into time and money. For instance, a simple installation of 4 electrical outlets, and 4 fluorescent ceiling lights required an electrical schematic and load calculation, and lighting compliance schedules. This translated into $3000 for the electrical engineer alone. Actual electrical work only cost $475 Then deal with Title 24(handicap access compliance). Ha! Had to add a bathroom, and make both meet Title 24 = $10,000. Parking space marking and signage. $750.Handicap access hardware compliance=$600. Sprinkler approval and installation in specified locations. $2700. HVAC supply and return ducting relocation documentation and installation=$2500. 10 trips to BID, and my time. $3200. Actuall partition and doors, only cost less than $1500. Painting, trim, hardware, ceiling repair, another $1500.......
Ok, enough. Suffice to say, anytime you start to think COMMERCIAL, think COMPLIANCE. I would suggest you talk to your local building inspectioon department first. Find out what they require for building a simple studio in a commercial space. Then reevaluate your scenario. I think you are seriously underestimating what it takes to go into a commercial space and do any type of construction. Well, thats my .02, but its better to be armed with knowledge, than to start a project such as a studio, and THEN get a stop work order. This is NOT like remodling a bedroom. Permits are mandatory. To get a permit requires planning and documentation. Also a few reality checks.
fitZ