Small Fire Stations are exactly the same as normal fire stations, except they can only expand to hold 6 vehicles. Also, you can only buy 1 extension for each Small Fire Station. You have the option of upgrading the Small Station into a normal station. This takes 24 hours and the cost of the original station's price. Small Fire Stations start out as 50,000 credits, as soon as 25 fire stations are built, the price becomes 150,000 credits. After that the price continues to rise by small amounts.
Cost - 50,000 Credits or 25 Coins
Max Expansion - 5 (Total of 6 vehicles)
Cost per Level Expansion - 10,000, then 50,000, then 100,000 (for each level after that) credits or 20 coins
Extensions - Ambulance, Airport, Water Rescue
Extension Cost -100,000 credits and 7 days to build
Vehicles - Type 1 fire engine, Type 2 fire engine, Rescue engine, Quint, Platform truck, Battalion chief unit, Heavy rescue vehicle, Mobile air, Water tanker, Utility unit, HazMat, MCV.
Can be upgraded to a Fire Station for 50,000 credits. (When upgrading, you do not lose any bays, it allows you to continue expanding bays and adding extensions)