This is an area I have experience and expertise in. Look at Master License Agreements in Houston, Dallas, San Antonio, Charlotte. Some states also have uniform legislation snaking its way through the various bodies, including Virginia, Ohio, Washington, Minnesota, Colorado, Florida, and California. Some is driven by ALEC and/or the wireless carriers, so it may be aggressively pro-deployment (to the detriment of local cities), but it's at least somewhere to look. If you're interested, PM me and I can share some materials on this, or at least discuss further.