Hi all! I have an assignment to appraise a 40-year old inflatable tennis club. The building look like a Quonset hut, but where all the metal ribs would be are inflatable tubes. The property is also located in a flood plain. I was thinking the Cost Approach would be the best method...I know I can't compare it to metal warehouses of similar size (20,000 SF). It has full clay courts, locker rooms, etc. It's only open during the winter. Any ideas?