According to national averages, it costs roughly $5,000 - $6,000 to demolish a post-and-beam barn that's 40 ft. x 30 ft.
This $5,000 - $6,000 average includes mechanical demolition and debris disposal. Barn deconstruction cost can amount to double that (or more). But don't forget: The costs you re-coup from the salvaged wood may offset these prices.
The cost to tear down a barn depends on a number of factors:
LEARN MORE: It Pays to Have Your Barn Demolished