Tower selection:
Select a tower suitable for your proposed current needs, and also to accommodate upcoming desires. Perhaps in the future you will want to either add more equipment to your existing tower or rent space out to someone else. If your tower isn't capable to handling the increased load capacity you may be forced to erect a new tower and start this process over again. When calculating how much square feet of resistance will be on the tower don't forget to include crow's nests, top hats, or standoffs used for antenna placement in your estimations. Be sure your tower manufacture has an ICBO#, expect your development department to ask for this.

Permitting process:
Your local development department will require that you obtain a building permit, and perhaps other permits for your new tower.

Zoning:
If your selected area is not commercially zoned you will need to complete a site approval application and pay a processing fee ($2000+/-). Your site approval will be subject to certain conditions such as improving driveway access and equipping the tower with an equipment shed, lighting, and signing a waiver allowing the development department to allow future tower developers to use your tower for their needs provided at a reasonable rent. If they find an existing suitable tower for your needs within a given area they will deny your request and require you use that existing tower. If not be prepared for the development department to survey neighbors and post public notices.

Structural Calculations:
The development department will want an engineer licensed in your state to review your selected tower and accompanying equipment and draw up a set of structural calculations for both the footings and wind speed. They will most likely require 2-4 copies of stamped, wet signature calculations ($3500+/-).

Soil Sample:
If the footings designed for the tower are rated for soil above your local area's threshold (around 1500 PSF) a core-type soil sample analysis will be required by a state licensed geotechnician ($3000+/-). If your footings are designed for 4000 PSF (like Trylon TSF Titan T-200) and your soil checks in at only 3000 PSF your structural engineer will need to re-draw the footings to accommodate that type of soil. It may be beneficial to determine your local threshold and have your structural engineer redraw the footings to fall below that limit at the same time he provides the wind-load calculations. This will avoid the need for a soil sample.