What % of budget is average for building maintenance and repairs?

As I give more thought to your question, you would get a better answer for your question by "googling" the question, since the answer above is not an average but only the amount for one church.

Repairing buildings is rather clear and specific enough, but maintenance of building could be a broad reference that might include fire insurance, heating/cooling, lights, inspections of fire systems/equipment, phones, alarms, etc. Assuming a more narrow perspective that excludes the larger budget items mentioned to maintain a building, our building repair budget line item is approx. 1.4% of our $276,000 operating total. ($4000/$276000 = 1.5%)