Design the studio to include a large control room for listening to recorded tracks. You'll need a main room to record drums and a couple of small isolation booths to record vocals. Insulate the recording room with acoustic foam and include areas for microphones. Consider splitting the main room with different types of flooring for different acoustics for recording.
Include an office area to conduct business. Production deals include paperwork as well as contacting record labels and independent financiers, so you want an area away from the recording side to manage business.
Create a lobby and a break room for artists and bands to relax while other performers are recording. Include a kitchenette area and a fridge as well as a microwave and an entertainment center for passing the time. If space is limited, you can put your entertainment center in the lobby as there will not be much walk-in traffic at a music production studio.
Introduce yourself to the artist community by placing advertisements and having a grand opening where local bands and artists are invited to check out your equipment and studio amenities. This will be a great way to network with any local artists who are looking for production services. Offer new clients deals on time, including discounts and free time for referrals.
Go to shows in your area and offer to work with up-and-coming artists at a discount. This will help you build your reputation in the area for quality work at reasonable prices. Many producers go out on the weekends to network to build their studio business.