RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Sep. 30, 2015
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS	RELATED PARTY TRANSACTIONS Kaupulehu Developments is entitled to receive a percentage of the gross receipts from the sales of single-family residential lots in Increment I from KD I, a land development partnership in which Barnwell holds a 19.6% non-controlling ownership interest accounted for under the equity method of investment. The percentage payments are part of a 2004 transaction where Kaupulehu Developments sold its leasehold interest in Increment I, which was prior to Barnwell’s affiliation with KD I which commenced on November 27, 2013, the acquisition date of our ownership interest in the Kukio Resort land development partnerships. During the year ended September 30, 2015, Barnwell received $3,772,000 in percentage of sales payments from KD I from the sale of six contiguous lots within Phase I of Increment I to a single buyer and 11 lots within Phase II of Increment I. From the acquisition date to September 30, 2014, Barnwell received $600,000 in percentage of sales payments from KD I from the sale of two lots within Phase II of Increment I.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.