But any savings that occur by using a metal building are usually quickly lost to higher energy and insurance costs. A major problem in the construction of any building is financing. This certainly applies to churches. His financing is available to all churches. Obviously other financing is available from banks, bondsmen, etc.
Fund raising is the classical option.
In general, churches should not build too far into the future. In other words, if the congregation is 500, then consider building a church with seating capacity for 600 or 700, not 2000 or 3000. Fund raising is far easier when there is a visible need. The church that builds too large has a hard time creating the urgency to pay for it. Funding for expansion is easier if it is obviously needed i.e. by being overcrowded.